channel bullshit

android/app/build.gradle

@@ -35,7 +35,7 @@ android {
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
 
-    implementation 'androidx.appcompat:appcompat:1.0.0'
+    implementation 'androidx.appcompat:appcompat:1.0.2'
     implementation 'androidx.cardview:cardview:1.0.0'
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
     implementation 'androidx.recyclerview:recyclerview:1.0.0'
@@ -45,7 +45,8 @@ dependencies {
     implementation 'com.google.android.material:material:1.0.0'
     implementation 'com.google.firebase:firebase-core:16.0.4'
     implementation 'com.google.firebase:firebase-messaging:17.3.4'
-    implementation 'com.google.android.gms:play-services-ads:17.0.0'
+    implementation 'com.google.android.gms:play-services-ads:17.1.0'
+    implementation 'com.android.billingclient:billing:1.2'
 
     implementation 'com.squareup.okhttp3:okhttp:3.10.0'
     implementation 'com.github.kenglxn.QRGen:android:2.5.0'

android/app/src/main/AndroidManifest.xml

@@ -6,6 +6,7 @@
 
     <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.VIBRATE" />
     <uses-permission android:name="com.android.vending.BILLING" />
 
     <application

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/SCNApp.java

@@ -4,6 +4,7 @@ import android.app.Application;
 import android.content.Context;
 import android.widget.Toast;
 
+import com.android.billingclient.api.BillingClient;
 import com.blackforestbytes.simplecloudnotifier.view.AccountFragment;
 import com.blackforestbytes.simplecloudnotifier.view.MainActivity;
 import com.blackforestbytes.simplecloudnotifier.view.TabAdapter;
@@ -101,29 +102,33 @@ public class SCNApp extends Application implements LifecycleObserver
 /*
  ==TODO==
 
- - Pro mode
-    - no ads
-    - more quota
-    - restore pro mode
-    - send pro state to server
+[X] - Pro mode
+[X]    - no ads
+[X]    - more quota
+[X]    - restore pro mode
+[X]    - send pro state to server
 
- - prevent duplicate-send
-    - send custom msg-id in API
-    - prevent second ack on same msg-id
+[X] - prevent duplicate-send
+[X]    - send custom msg-id in API
+[X]    - prevent second ack on same msg-id
 
- - more in-depth API doc on website (?)
+[X]  - more in-depth API doc on website (?)
 
- - perhaps response codes in api (?)
+[X]  - perhaps response codes in api (?)
 
- - test notification channels
+[X]  - verify recieve
 
- - publish (+ HN post ?)
+[ ]  - Android O repeat sound
 
- - Use for mscom server errrors
- - Use for bfb server errors
- - Use for transmission state
-    - Message on connnection lost (seperate process - resend until succ)
-    - Message on connnection regained
-    - Message on seed-count changed
+[ ]  - test notification channels
+
+[ ] - publish (+ HN post ?)
+
+[ ] - Use for mscom server errrors
+[ ] - Use for bfb server errors
+[ ] - Use for transmission state
+[ ]    - Message on connnection lost (seperate process - resend until succ)
+[ ]    - Message on connnection regained
+[ ]    - Message on seed-count changed
 
 */

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/android/ThreadUtils.java

@@ -0,0 +1,23 @@
+package com.blackforestbytes.simplecloudnotifier.lib.android;
+
+import android.util.Log;
+
+public final class ThreadUtils
+{
+	public static void safeSleep(int millisMin, int millisMax)
+	{
+		safeSleep(millisMin + (int)(Math.random()*(millisMax-millisMin)));
+	}
+
+	public static void safeSleep(int millis)
+	{
+		try
+		{
+			Thread.sleep(millis);
+		}
+		catch (InterruptedException e)
+		{
+			Log.d("ThreadUtils", e.toString());
+		}
+	}
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/collections/CollectionHelper.java

@@ -0,0 +1,38 @@
+package com.blackforestbytes.simplecloudnotifier.lib.collections;
+
+import com.blackforestbytes.simplecloudnotifier.lib.lambda.Func1to1;
+
+import java.util.*;
+
+public final class CollectionHelper
+{
+	public static <T, C> List<T> unique(List<T> input, Func1to1<T, C> mapping)
+	{
+		List<T> output = new ArrayList<>(input.size());
+
+		HashSet<C> seen = new HashSet<>();
+
+		for (T v : input) if (seen.add(mapping.invoke(v))) output.add(v);
+
+		return output;
+	}
+
+	public static <T> List<T> sort(List<T> input, Comparator<T> comparator)
+	{
+		List<T> output = new ArrayList<>(input);
+		Collections.sort(output, comparator);
+		return output;
+	}
+
+	public static <T, U extends Comparable<U>> List<T> sort(List<T> input, Func1to1<T, U> mapper)
+	{
+		return sort(input, mapper, 1);
+	}
+
+	public static <T, U extends Comparable<U>> List<T> sort(List<T> input, Func1to1<T, U> mapper, int sortMod)
+	{
+		List<T> output = new ArrayList<>(input);
+		Collections.sort(output, (o1, o2) -> sortMod * mapper.invoke(o1).compareTo(mapper.invoke(o2)));
+		return output;
+	}
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/datatypes/IntRange.java

@@ -0,0 +1,14 @@
+package com.blackforestbytes.simplecloudnotifier.lib.datatypes;
+
+public class IntRange
+{
+	private int Start;
+	public int Start() { return Start; }
+
+	private int End;
+	public int End() { return End; }
+
+	public IntRange(int s, int e) { Start = s; End = e; }
+
+	private IntRange() {  }
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/datatypes/NInt.java

@@ -0,0 +1,10 @@
+package com.blackforestbytes.simplecloudnotifier.lib.datatypes;
+
+public class NInt
+{
+	public int Value;
+
+	public NInt(int v) { Value = v; }
+
+	private NInt() {  }
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/datatypes/Nothing.java

@@ -0,0 +1,6 @@
+package com.blackforestbytes.simplecloudnotifier.lib.datatypes;
+
+public final class Nothing
+{
+	public final static Nothing Inst = new Nothing();
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/datatypes/Tuple1.java

@@ -0,0 +1,11 @@
+package com.blackforestbytes.simplecloudnotifier.lib.datatypes;
+
+public class Tuple1<T1>
+{
+	public final T1 Item1;
+
+	public Tuple1(T1 i1)
+	{
+		Item1 = i1;
+	}
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/datatypes/Tuple2.java

@@ -0,0 +1,13 @@
+package com.blackforestbytes.simplecloudnotifier.lib.datatypes;
+
+public class Tuple2<T1, T2>
+{
+	public final T1 Item1;
+	public final T2 Item2;
+
+	public Tuple2(T1 i1, T2 i2)
+	{
+		Item1 = i1;
+		Item2 = i2;
+	}
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/datatypes/Tuple3.java

@@ -0,0 +1,15 @@
+package com.blackforestbytes.simplecloudnotifier.lib.datatypes;
+
+public class Tuple3<T1, T2, T3>
+{
+	public final T1 Item1;
+	public final T2 Item2;
+	public final T3 Item3;
+
+	public Tuple3(T1 i1, T2 i2, T3 i3)
+	{
+		Item1 = i1;
+		Item2 = i2;
+		Item3 = i3;
+	}
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/datatypes/Tuple4.java

@@ -0,0 +1,17 @@
+package com.blackforestbytes.simplecloudnotifier.lib.datatypes;
+
+public class Tuple4<T1, T2, T3, T4>
+{
+	public final T1 Item1;
+	public final T2 Item2;
+	public final T3 Item3;
+	public final T4 Item4;
+
+	public Tuple4(T1 i1, T2 i2, T3 i3, T4 i4)
+	{
+		Item1 = i1;
+		Item2 = i2;
+		Item3 = i3;
+		Item4 = i4;
+	}
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/lambda/Func0to0.java

@@ -0,0 +1,9 @@
+package com.blackforestbytes.simplecloudnotifier.lib.lambda;
+
+@FunctionalInterface
+public interface Func0to0 {
+
+	Func0to0 EMPTY = ()->{};
+
+	void invoke();
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/lambda/Func0to1.java

@@ -0,0 +1,6 @@
+package com.blackforestbytes.simplecloudnotifier.lib.lambda;
+
+@FunctionalInterface
+public interface Func0to1<TResult> {
+	TResult invoke();
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/lambda/Func0to1WithIOException.java

@@ -0,0 +1,8 @@
+package com.blackforestbytes.simplecloudnotifier.lib.lambda;
+
+import java.io.IOException;
+
+@FunctionalInterface
+public interface Func0to1WithIOException<TResult> {
+	TResult invoke() throws IOException;
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/lambda/Func1to0.java

@@ -0,0 +1,6 @@
+package com.blackforestbytes.simplecloudnotifier.lib.lambda;
+
+@FunctionalInterface
+public interface Func1to0<TInput1> {
+	void invoke(TInput1 value);
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/lambda/Func1to1.java

@@ -0,0 +1,6 @@
+package com.blackforestbytes.simplecloudnotifier.lib.lambda;
+
+@FunctionalInterface
+public interface Func1to1<TInput1, TResult> {
+	TResult invoke(TInput1 value);
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/lambda/Func2to0.java

@@ -0,0 +1,6 @@
+package com.blackforestbytes.simplecloudnotifier.lib.lambda;
+
+@FunctionalInterface
+public interface Func2to0<TInput1, TInput2> {
+	void invoke(TInput1 value1, TInput2 value2);
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/lambda/Func2to1.java

@@ -0,0 +1,6 @@
+package com.blackforestbytes.simplecloudnotifier.lib.lambda;
+
+@FunctionalInterface
+public interface Func2to1<TInput1, TInput2, TResult> {
+	TResult invoke(TInput1 value1, TInput2 value2);
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/string/CompactJsonFormatter.java

@@ -0,0 +1,231 @@
+package com.blackforestbytes.simplecloudnotifier.lib.string;
+
+// from MonoSAMFramework.Portable.DebugTools.CompactJsonFormatter
+public class CompactJsonFormatter
+{
+	private static final String INDENT_STRING = "  ";
+	
+	public static String formatJSON(String str, int maxIndent)
+	{
+		int indent = 0;
+		boolean quoted = false;
+		StringBuilder sb = new StringBuilder();
+		char last = ' ';
+		for (int i = 0; i < str.length(); i++)
+		{
+			char ch = str.charAt(i);
+			switch (ch)
+			{
+				case '\r':
+				case '\n':
+					break;
+				case '{':
+				case '[':
+					sb.append(ch);
+					last = ch;
+					if (!quoted)
+					{
+						indent++;
+						if (indent >= maxIndent) break;
+						sb.append("\n");
+						for (int ix = 0; ix < indent; ix++) sb.append(INDENT_STRING);
+						last = ' ';
+					}
+					break;
+				case '}':
+				case ']':
+					if (!quoted)
+					{
+						indent--;
+						if (indent + 1 >= maxIndent) { sb.append(ch); break; }
+						sb.append("\n");
+						for (int ix = 0; ix < indent; ix++) sb.append(INDENT_STRING);
+					}
+					sb.append(ch);
+					last = ch;
+					break;
+				case '"':
+					sb.append(ch);
+					last = ch;
+					boolean escaped = false;
+					int index = i;
+					while (index > 0 && str.charAt(--index) == '\\')
+						escaped = !escaped;
+					if (!escaped)
+						quoted = !quoted;
+					break;
+				case ',':
+					sb.append(ch);
+					last = ch;
+					if (!quoted)
+					{
+						if (indent >= maxIndent) { sb.append(' '); last = ' '; break; }
+						sb.append("\n");
+						for (int ix = 0; ix < indent; ix++) sb.append(INDENT_STRING);
+					}
+					break;
+				case ':':
+					sb.append(ch);
+					last = ch;
+					if (!quoted) { sb.append(" "); last = ' '; }
+					break;
+				case ' ':
+				case '\t':
+					if (quoted)
+					{
+						sb.append(ch);
+						last = ch;
+					}
+					else if (last != ' ')
+					{
+						sb.append(' ');
+						last = ' ';
+					}
+					break;
+				default:
+					sb.append(ch);
+					last = ch;
+					break;
+			}
+		}
+		return sb.toString();
+	}
+
+	public static String compressJson(String str, int compressionLevel)
+	{
+		int indent = 0;
+		boolean quoted = false;
+		StringBuilder sb = new StringBuilder();
+		char last = ' ';
+		int compress = 0;
+		for (int i = 0; i < str.length(); i++)
+		{
+			char ch = str.charAt(i);
+			switch (ch)
+			{
+				case '\r':
+				case '\n':
+					break;
+				case '{':
+				case '[':
+
+					sb.append(ch);
+					last = ch;
+					if (!quoted)
+					{
+						if (compress == 0 && getJsonDepth(str, i) <= compressionLevel)
+							compress = 1;
+						else if (compress > 0)
+							compress++;
+
+						indent++;
+						if (compress > 0) break;
+						sb.append("\n");
+						for (int ix = 0; ix < indent; ix++) sb.append(INDENT_STRING);
+						last = ' ';
+					}
+					break;
+				case '}':
+				case ']':
+					if (!quoted)
+					{
+						indent--;
+						if (compress > 0) { compress--; sb.append(ch); break; }
+						compress--;
+						sb.append("\n");
+						for (int ix = 0; ix < indent; ix++) sb.append(INDENT_STRING);
+					}
+					sb.append(ch);
+					last = ch;
+					break;
+				case '"':
+					sb.append(ch);
+					last = ch;
+					boolean escaped = false;
+					int index = i;
+					while (index > 0 && str.charAt(--index) == '\\')
+						escaped = !escaped;
+					if (!escaped)
+						quoted = !quoted;
+					break;
+				case ',':
+					sb.append(ch);
+					last = ch;
+					if (!quoted)
+					{
+						if (compress > 0) { sb.append(' '); last = ' '; break; }
+						sb.append("\n");
+						for (int ix = 0; ix < indent; ix++) sb.append(INDENT_STRING);
+					}
+					break;
+				case ':':
+					sb.append(ch);
+					last = ch;
+					if (!quoted) { sb.append(" "); last = ' '; }
+					break;
+				case ' ':
+				case '\t':
+					if (quoted)
+					{
+						sb.append(ch);
+						last = ch;
+					}
+					else if (last != ' ')
+					{
+						sb.append(' ');
+						last = ' ';
+					}
+					break;
+				default:
+					sb.append(ch);
+					last = ch;
+					break;
+			}
+		}
+		return sb.toString();
+	}
+
+	public static int getJsonDepth(String str, int i)
+	{
+		int maxindent = 0;
+		int indent = 0;
+		boolean quoted = false;
+		for (; i < str.length(); i++)
+		{
+			char ch = str.charAt(i);
+			switch (ch)
+			{
+				case '{':
+				case '[':
+					if (!quoted)
+					{
+						indent++;
+						maxindent = Math.max(indent, maxindent);
+					}
+					break;
+
+				case '}':
+				case ']':
+					if (!quoted)
+					{
+						indent--;
+						if (indent <= 0) return maxindent;
+					}
+					break;
+
+				case '"':
+					boolean escaped = false;
+					int index = i;
+					while (index > 0 && str.charAt(--index) == '\\')
+						escaped = !escaped;
+					if (!escaped)
+						quoted = !quoted;
+					break;
+
+				default:
+					break;
+			}
+		}
+		return maxindent;
+	}
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/lib/string/Str.java

@@ -0,0 +1,98 @@
+package com.blackforestbytes.simplecloudnotifier.lib.string;
+
+import android.content.Context;
+import android.util.Log;
+
+import com.blackforestbytes.simplecloudnotifier.SCNApp;
+import com.blackforestbytes.simplecloudnotifier.lib.lambda.Func1to1;
+
+import java.text.MessageFormat;
+import java.util.List;
+
+public class Str
+{
+	public final static String Empty = "";
+
+	public static String format(String fmt, Object... data)
+	{
+		return MessageFormat.format(fmt, data);
+	}
+
+	public static String rformat(int fmtResId, Object... data)
+	{
+		Context inst = SCNApp.getContext();
+		if (inst == null)
+		{
+			Log.e("StringFormat", "rformat::NoInstance --> inst==null for" + fmtResId);
+			return "?ERR?";
+		}
+
+		return MessageFormat.format(inst.getResources().getString(fmtResId), data);
+	}
+
+	public static String firstLine(String content)
+	{
+		int idx = content.indexOf('\n');
+		if (idx == -1) return content;
+
+		if (idx == 0) return Str.Empty;
+
+		if (content.charAt(idx-1) == '\r') return content.substring(0, idx-1);
+
+		return content.substring(0, idx);
+	}
+
+	public static boolean isNullOrWhitespace(String str)
+	{
+		return str == null || str.length() == 0 || str.trim().length() == 0;
+	}
+
+	public static boolean isNullOrEmpty(String str)
+	{
+		return str == null || str.length() == 0;
+	}
+
+	public static boolean equals(String a, String b)
+	{
+		if (a == null) return (b == null);
+		return a.equals(b);
+	}
+
+	public static String join(String sep, List<String> list)
+	{
+		StringBuilder b = new StringBuilder();
+		boolean first = true;
+		for (String v : list)
+		{
+			if (!first) b.append(sep);
+			b.append(v);
+			first = false;
+		}
+		return b.toString();
+	}
+
+	public static <T> String join(String sep, List<T> list, Func1to1<T, String> map)
+	{
+		StringBuilder b = new StringBuilder();
+		boolean first = true;
+		for (T v : list)
+		{
+			if (!first) b.append(sep);
+			b.append(map.invoke(v));
+			first = false;
+		}
+		return b.toString();
+	}
+
+	public static Integer tryParseToInt(String s)
+	{
+		try
+		{
+			return Integer.parseInt(s);
+		}
+		catch (Exception e)
+		{
+			return null;
+		}
+	}
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/model/CMessage.java

@@ -9,7 +9,8 @@ import java.util.TimeZone;
 
 public class CMessage
 {
-    public final long Timestamp ;
+    public final long SCN_ID;
+    public final long Timestamp;
     public final String Title;
     public final String Content;
     public final PriorityEnum Priority;
@@ -21,8 +22,9 @@ public class CMessage
         _format.setTimeZone(TimeZone.getDefault());
     }
 
-    public CMessage(long t, String mt, String mc, PriorityEnum p)
+    public CMessage(long id, long t, String mt, String mc, PriorityEnum p)
     {
+        SCN_ID = id;
         Timestamp = t;
         Title = mt;
         Content = mc;

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/model/CMessageList.java

@@ -38,14 +38,15 @@ public class CMessageList
             String title      = sharedPref.getString("message["+i+"].title", "");
             String content    = sharedPref.getString("message["+i+"].content", "");
             PriorityEnum prio = PriorityEnum.parseAPI(sharedPref.getInt("message["+i+"].priority", 1));
+            long scnid        = sharedPref.getLong("message["+i+"].scnid", 0);
 
-            Messages.add(new CMessage(time, title, content, prio));
+            Messages.add(new CMessage(scnid, time, title, content, prio));
         }
     }
 
-    public CMessage add(final long time, final String title, final String content, final PriorityEnum pe)
+    public CMessage add(final long scnid, final long time, final String title, final String content, final PriorityEnum pe)
     {
-        CMessage msg = new CMessage(time, title, content, pe);
+        CMessage msg = new CMessage(scnid, time, title, content, pe);
 
         boolean run = SCNApp.runOnUiThread(() ->
         {
@@ -58,11 +59,12 @@ public class CMessageList
 
             while (Messages.size()>SCNSettings.inst().LocalCacheSize) Messages.remove(0);
 
-            e.putInt("message_count", count+1);
-            e.putLong("message["+count+"].timestamp", time);
+            e.putInt(   "message_count",                count+1);
+            e.putLong(  "message["+count+"].timestamp", time);
             e.putString("message["+count+"].title",     title);
             e.putString("message["+count+"].content",   content);
-            e.putInt("message["+count+"].priority", pe.ID);
+            e.putInt(   "message["+count+"].priority",  pe.ID);
+            e.putLong(  "message["+count+"].scnid",     scnid);
 
             e.apply();
 
@@ -77,7 +79,7 @@ public class CMessageList
 
         if (!run)
         {
-            Messages.add(new CMessage(time, title, content, pe));
+            Messages.add(new CMessage(scnid, time, title, content, pe));
             fullSave();
         }
 
@@ -109,10 +111,11 @@ public class CMessageList
 
         for (int i = 0; i < Messages.size(); i++)
         {
-            e.putLong("message["+i+"].timestamp", Messages.get(i).Timestamp);
+            e.putLong(  "message["+i+"].timestamp", Messages.get(i).Timestamp);
             e.putString("message["+i+"].title",     Messages.get(i).Title);
             e.putString("message["+i+"].content",   Messages.get(i).Content);
-            e.putInt("message["+i+"].priority", Messages.get(i).Priority.ID);
+            e.putInt(   "message["+i+"].priority",  Messages.get(i).Priority.ID);
+            e.putLong(  "message["+i+"].scnid",     Messages.get(i).SCN_ID);
         }
 
         e.apply();

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/model/NotificationSettings.java

@@ -1,17 +1,29 @@
 package com.blackforestbytes.simplecloudnotifier.model;
 
 import android.graphics.Color;
+import android.media.RingtoneManager;
 import android.net.Uri;
 
 public class NotificationSettings
 {
-    public boolean EnableSound = false;
-    public String SoundName = "";
-    public String SoundSource = Uri.EMPTY.toString();
-    public boolean RepeatSound = false;
+    public boolean EnableSound;
+    public String SoundName;
+    public String SoundSource;
+    public boolean RepeatSound;
 
-    public boolean EnableLED = false;
-    public int LEDColor = Color.BLUE;
+    public boolean EnableLED;
+    public int LEDColor;
 
-    public boolean EnableVibration = false;
+    public boolean EnableVibration;
+
+    public NotificationSettings(PriorityEnum p)
+    {
+        EnableSound     = (p == PriorityEnum.HIGH);
+        SoundName       = (p == PriorityEnum.HIGH) ? "Default" : "";
+        SoundSource     = (p == PriorityEnum.HIGH) ? RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION).toString() : Uri.EMPTY.toString();
+        RepeatSound     = false;
+        EnableLED       = (p == PriorityEnum.HIGH) || (p == PriorityEnum.NORMAL);
+        LEDColor        = Color.BLUE;
+        EnableVibration = (p == PriorityEnum.HIGH) || (p == PriorityEnum.NORMAL);
+    }
 }

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/model/SCNSettings.java

@@ -6,7 +6,10 @@ import android.content.SharedPreferences;
 import android.util.Log;
 import android.view.View;
 
+import com.android.billingclient.api.Purchase;
 import com.blackforestbytes.simplecloudnotifier.SCNApp;
+import com.blackforestbytes.simplecloudnotifier.lib.string.Str;
+import com.blackforestbytes.simplecloudnotifier.service.IABService;
 import com.google.firebase.iid.FirebaseInstanceId;
 
 public class SCNSettings
@@ -36,14 +39,18 @@ public class SCNSettings
     public String fcm_token_local;
     public String fcm_token_server;
 
+    public String  promode_token;
+    public boolean promode_local;
+    public boolean promode_server;
+
     // ------------------------------------------------------------
 
     public boolean Enabled = true;
     public int LocalCacheSize = 500;
 
-    public final NotificationSettings PriorityLow  = new NotificationSettings();
-    public final NotificationSettings PriorityNorm = new NotificationSettings();
-    public final NotificationSettings PriorityHigh = new NotificationSettings();
+    public final NotificationSettings PriorityLow  = new NotificationSettings(PriorityEnum.LOW);
+    public final NotificationSettings PriorityNorm = new NotificationSettings(PriorityEnum.NORMAL);
+    public final NotificationSettings PriorityHigh = new NotificationSettings(PriorityEnum.HIGH);
 
     // ------------------------------------------------------------
 
@@ -57,6 +64,9 @@ public class SCNSettings
         user_key         = sharedPref.getString("user_key",         "");
         fcm_token_local  = sharedPref.getString("fcm_token_local",  "");
         fcm_token_server = sharedPref.getString("fcm_token_server", "");
+        promode_local    = sharedPref.getBoolean("promode_local",   false);
+        promode_server   = sharedPref.getBoolean("promode_server",  false);
+        promode_token    = sharedPref.getString("promode_token",    "");
 
         Enabled                     = sharedPref.getBoolean("app_enabled",  Enabled);
         LocalCacheSize              = sharedPref.getInt("local_cache_size", LocalCacheSize);
@@ -151,10 +161,12 @@ public class SCNSettings
         {
             fcm_token_local = token;
             save();
-            ServerCommunication.register(fcm_token_local, loader);
+            ServerCommunication.register(fcm_token_local, loader, promode_local, promode_token);
+            updateProState(loader);
         }
     }
 
+    // called at app start
     public void work(Activity a)
     {
         FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener(a, instanceIdResult ->
@@ -166,8 +178,11 @@ public class SCNSettings
         {
             if (isConnected()) ServerCommunication.info(user_id, user_key, null);
         });
+
+        updateProState(null);
     }
 
+    // reset account key
     public void reset(View loader)
     {
         if (!isConnected()) return;
@@ -175,23 +190,50 @@ public class SCNSettings
         ServerCommunication.update(user_id, user_key, loader);
     }
 
+    // refresh account data
     public void refresh(View loader, Activity a)
     {
         if (isConnected())
         {
             ServerCommunication.info(user_id, user_key, loader);
+
+            if (promode_server != promode_local) updateProState(loader);
+
+            if (!Str.equals(fcm_token_local, fcm_token_server)) work(a);
         }
         else
         {
+            // get token then register
             FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener(a, instanceIdResult ->
             {
                 String newToken = instanceIdResult.getToken();
                 Log.e("FB::GetInstanceId", newToken);
-                SCNSettings.inst().setServerToken(newToken, loader);
+                SCNSettings.inst().setServerToken(newToken, loader); // does register in here
             }).addOnCompleteListener(r ->
             {
-                if (isConnected()) ServerCommunication.info(user_id, user_key, null);
+                if (isConnected()) ServerCommunication.info(user_id, user_key, null); // info again for safety
             });
         }
     }
+
+    public void updateProState(View loader)
+    {
+        Purchase purch = IABService.inst().getPurchaseCached(IABService.IAB_PRO_MODE);
+        boolean promode_real = (purch != null);
+
+        if (promode_real != promode_local || promode_real != promode_server)
+        {
+            promode_local = promode_real;
+
+            promode_token = promode_real ? purch.getPurchaseToken() : "";
+            updateProStateOnServer(loader);
+        }
+    }
+
+    public void updateProStateOnServer(View loader)
+    {
+        if (!isConnected()) return;
+
+        ServerCommunication.upgrade(user_id, user_key, loader, promode_local, promode_token);
+    }
 }

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/model/ServerCommunication.java

@@ -4,11 +4,14 @@ import android.util.Log;
 import android.view.View;
 
 import com.blackforestbytes.simplecloudnotifier.SCNApp;
+import com.blackforestbytes.simplecloudnotifier.lib.string.Str;
 
+import org.json.JSONException;
 import org.json.JSONObject;
 import org.json.JSONTokener;
 
 import java.io.IOException;
+import java.net.URLEncoder;
 
 import okhttp3.Call;
 import okhttp3.Callback;
@@ -25,12 +28,12 @@ public class ServerCommunication
 
     private ServerCommunication(){ throw new Error("no."); }
 
-    public static void register(String token, View loader)
+    public static void register(String token, View loader, boolean pro, String pro_token)
     {
         try
         {
             Request request = new Request.Builder()
-                    .url(BASE_URL + "register.php?fcm_token="+token)
+                    .url(BASE_URL + "register.php?fcm_token=" + token + "&pro=" + pro + "&pro_token=" + URLEncoder.encode(pro_token, "utf-8"))
                     .build();
 
             client.newCall(request).enqueue(new Callback()
@@ -38,7 +41,7 @@ public class ServerCommunication
                 @Override
                 public void onFailure(Call call, IOException e)
                 {
-                    e.printStackTrace();
+                    Log.e("SC:register", e.toString());
                     SCNApp.showToast("Communication with server failed", 4000);
                     SCNApp.runOnUiThread(() -> { if (loader!=null)loader.setVisibility(View.GONE); });
                 }
@@ -56,24 +59,25 @@ public class ServerCommunication
 
                         JSONObject json = (JSONObject) new JSONTokener(r).nextValue();
 
-                        if (!json.getBoolean("success"))
+                        if (!json_bool(json, "success"))
                         {
-                            SCNApp.showToast(json.getString("message"), 4000);
+                            SCNApp.showToast(json_str(json, "message"), 4000);
                             return;
                         }
 
-                        SCNSettings.inst().user_id          = json.getInt("user_id");
-                        SCNSettings.inst().user_key         = json.getString("user_key");
+                        SCNSettings.inst().user_id          = json_int(json, "user_id");
+                        SCNSettings.inst().user_key         = json_str(json, "user_key");
                         SCNSettings.inst().fcm_token_server = token;
-                        SCNSettings.inst().quota_curr       = json.getInt("quota");
-                        SCNSettings.inst().quota_max        = json.getInt("quota_max");
+                        SCNSettings.inst().quota_curr       = json_int(json, "quota");
+                        SCNSettings.inst().quota_max        = json_int(json, "quota_max");
+                        SCNSettings.inst().promode_server   = json_bool(json, "is_pro");
                         SCNSettings.inst().save();
 
                         SCNApp.refreshAccountTab();
                     }
                     catch (Exception e)
                     {
-                        e.printStackTrace();
+                        Log.e("SC:register", e.toString());
                         SCNApp.showToast("Communication with server failed", 4000);
                     }
                     finally
@@ -85,7 +89,7 @@ public class ServerCommunication
         }
         catch (Exception e)
         {
-            e.printStackTrace();
+            Log.e("SC:register", e.toString());
             SCNApp.showToast("Communication with server failed", 4000);
         }
     }
@@ -103,7 +107,7 @@ public class ServerCommunication
                 @Override
                 public void onFailure(Call call, IOException e)
                 {
-                    e.printStackTrace();
+                    Log.e("SC:update_1", e.toString());
                     SCNApp.showToast("Communication with server failed", 4000);
                     SCNApp.runOnUiThread(() -> { if (loader!=null)loader.setVisibility(View.GONE); });
                 }
@@ -121,24 +125,25 @@ public class ServerCommunication
 
                         JSONObject json = (JSONObject) new JSONTokener(r).nextValue();
 
-                        if (!json.getBoolean("success"))
+                        if (!json_bool(json, "success"))
                         {
-                            SCNApp.showToast(json.getString("message"), 4000);
+                            SCNApp.showToast(json_str(json, "message"), 4000);
                             return;
                         }
 
-                        SCNSettings.inst().user_id          = json.getInt("user_id");
-                        SCNSettings.inst().user_key         = json.getString("user_key");
+                        SCNSettings.inst().user_id          = json_int(json, "user_id");
+                        SCNSettings.inst().user_key         = json_str(json, "user_key");
                         SCNSettings.inst().fcm_token_server = token;
-                        SCNSettings.inst().quota_curr       = json.getInt("quota");
-                        SCNSettings.inst().quota_max        = json.getInt("quota_max");
+                        SCNSettings.inst().quota_curr       = json_int(json, "quota");
+                        SCNSettings.inst().quota_max        = json_int(json, "quota_max");
+                        SCNSettings.inst().promode_server   = json_bool(json, "is_pro");
                         SCNSettings.inst().save();
 
                         SCNApp.refreshAccountTab();
                     }
                     catch (Exception e)
                     {
-                        e.printStackTrace();
+                        Log.e("SC:update_1", e.toString());
                         SCNApp.showToast("Communication with server failed", 4000);
                     }
                     finally
@@ -150,7 +155,7 @@ public class ServerCommunication
         }
         catch (Exception e)
         {
-            e.printStackTrace();
+            Log.e("SC:update_1", e.toString());
             SCNApp.showToast("Communication with server failed", 4000);
         }
     }
@@ -166,7 +171,7 @@ public class ServerCommunication
             client.newCall(request).enqueue(new Callback() {
                 @Override
                 public void onFailure(Call call, IOException e) {
-                    e.printStackTrace();
+                    Log.e("SC:update_2", e.toString());
                     SCNApp.showToast("Communication with server failed", 4000);
                 }
 
@@ -182,20 +187,21 @@ public class ServerCommunication
 
                         JSONObject json = (JSONObject) new JSONTokener(r).nextValue();
 
-                        if (!json.getBoolean("success")) {
-                            SCNApp.showToast(json.getString("message"), 4000);
+                        if (!json_bool(json, "success")) {
+                            SCNApp.showToast(json_str(json, "message"), 4000);
                             return;
                         }
 
-                        SCNSettings.inst().user_id = json.getInt("user_id");
-                        SCNSettings.inst().user_key = json.getString("user_key");
-                        SCNSettings.inst().quota_curr = json.getInt("quota");
-                        SCNSettings.inst().quota_max = json.getInt("quota_max");
+                        SCNSettings.inst().user_id          = json_int(json, "user_id");
+                        SCNSettings.inst().user_key         = json_str(json, "user_key");
+                        SCNSettings.inst().quota_curr       = json_int(json, "quota");
+                        SCNSettings.inst().quota_max        = json_int(json, "quota_max");
+                        SCNSettings.inst().promode_server   = json_bool(json, "is_pro");
                         SCNSettings.inst().save();
 
                         SCNApp.refreshAccountTab();
                     } catch (Exception e) {
-                        e.printStackTrace();
+                        Log.e("SC:update_2", e.toString());
                         SCNApp.showToast("Communication with server failed", 4000);
                     } finally {
                         SCNApp.runOnUiThread(() -> {
@@ -207,7 +213,7 @@ public class ServerCommunication
         }
         catch (Exception e)
         {
-            e.printStackTrace();
+            Log.e("SC:update_2", e.toString());
             SCNApp.showToast("Communication with server failed", 4000);
         }
     }
@@ -223,7 +229,7 @@ public class ServerCommunication
             client.newCall(request).enqueue(new Callback() {
                 @Override
                 public void onFailure(Call call, IOException e) {
-                    e.printStackTrace();
+                    Log.e("SC:info", e.toString());
                     SCNApp.showToast("Communication with server failed", 4000);
                     SCNApp.runOnUiThread(() -> {
                         if (loader != null) loader.setVisibility(View.GONE);
@@ -242,19 +248,40 @@ public class ServerCommunication
 
                         JSONObject json = (JSONObject) new JSONTokener(r).nextValue();
 
-                        if (!json.getBoolean("success")) {
-                            SCNApp.showToast(json.getString("message"), 4000);
+                        if (!json_bool(json, "success"))
+                        {
+                            SCNApp.showToast(json_str(json, "message"), 4000);
+
+                            int errid = json.optInt("errid", 0);
+
+                            if (errid == 201 || errid == 202 || errid == 203 || errid == 204)
+                            {
+                                // user not found or auth failed
+
+                                SCNSettings.inst().user_id          = -1;
+                                SCNSettings.inst().user_key         = "";
+                                SCNSettings.inst().quota_curr       = 0;
+                                SCNSettings.inst().quota_max        = 0;
+                                SCNSettings.inst().promode_server   = false;
+                                SCNSettings.inst().fcm_token_server = "";
+                                SCNSettings.inst().save();
+
+                                SCNApp.refreshAccountTab();
+                            }
+
                             return;
                         }
 
-                        SCNSettings.inst().user_id = json.getInt("user_id");
-                        SCNSettings.inst().quota_curr = json.getInt("quota");
-                        SCNSettings.inst().quota_max = json.getInt("quota_max");
+                        SCNSettings.inst().user_id        = json_int(json, "user_id");
+                        SCNSettings.inst().quota_curr     = json_int(json, "quota");
+                        SCNSettings.inst().quota_max      = json_int(json, "quota_max");
+                        SCNSettings.inst().promode_server = json_bool(json, "is_pro");
+                        if (!json_bool(json, "fcm_token_set")) SCNSettings.inst().fcm_token_server = "";
                         SCNSettings.inst().save();
 
                         SCNApp.refreshAccountTab();
                     } catch (Exception e) {
-                        e.printStackTrace();
+                        Log.e("SC:info", e.toString());
                         SCNApp.showToast("Communication with server failed", 4000);
                     } finally {
                         SCNApp.runOnUiThread(() -> {
@@ -265,9 +292,112 @@ public class ServerCommunication
             });
         }
         catch (Exception e)
+        {
+            Log.e("SC:info", e.toString());
+            SCNApp.showToast("Communication with server failed", 4000);
+        }
+    }
+
+    public static void upgrade(int id, String key, View loader, boolean pro, String pro_token)
+    {
+        try
+        {
+            SCNApp.runOnUiThread(() -> { if (loader != null) loader.setVisibility(View.GONE); });
+
+            Request request = new Request.Builder()
+                    .url(BASE_URL + "upgrade.php?user_id=" + id + "&user_key=" + key + "&pro=" + pro + "&pro_token=" + URLEncoder.encode(pro_token, "utf-8"))
+                    .build();
+
+            client.newCall(request).enqueue(new Callback() {
+                @Override
+                public void onFailure(Call call, IOException e) {
+                    Log.e("SC:upgrade", e.toString());
+                    SCNApp.showToast("Communication with server failed", 4000);
+                }
+
+                @Override
+                public void onResponse(Call call, Response response) {
+                    try (ResponseBody responseBody = response.body()) {
+                        if (!response.isSuccessful())
+                            throw new IOException("Unexpected code " + response);
+                        if (responseBody == null) throw new IOException("No response");
+
+                        String r = responseBody.string();
+                        Log.d("Server::Response", r);
+
+                        JSONObject json = (JSONObject) new JSONTokener(r).nextValue();
+
+                        if (!json_bool(json, "success")) {
+                            SCNApp.showToast(json_str(json, "message"), 4000);
+                            return;
+                        }
+
+                        SCNSettings.inst().user_id          = json_int(json, "user_id");
+                        SCNSettings.inst().quota_curr       = json_int(json, "quota");
+                        SCNSettings.inst().quota_max        = json_int(json, "quota_max");
+                        SCNSettings.inst().promode_server   = json_bool(json, "is_pro");
+                        SCNSettings.inst().save();
+
+                        SCNApp.refreshAccountTab();
+                    } catch (Exception e) {
+                        Log.e("SC:upgrade", e.toString());
+                        SCNApp.showToast("Communication with server failed", 4000);
+                    } finally {
+                        SCNApp.runOnUiThread(() -> { if (loader != null) loader.setVisibility(View.GONE); });
+                    }
+                }
+            });
+        }
+        catch (Exception e)
         {
             e.printStackTrace();
             SCNApp.showToast("Communication with server failed", 4000);
         }
     }
+
+    public static void ack(int id, String key, CMessage msg)
+    {
+        try
+        {
+            Request request = new Request.Builder()
+                    .url(BASE_URL + "ack.php?user_id=" + id + "&user_key=" + key + "&scn_msg_id=" + msg.SCN_ID)
+                    .build();
+
+            client.newCall(request).enqueue(new Callback() {
+                @Override
+                public void onFailure(Call call, IOException e) {
+                    Log.e("SC:ack", e.toString());
+                }
+
+                @Override
+                public void onResponse(Call call, Response response) {
+                    // ????
+                }
+            });
+        }
+        catch (Exception e)
+        {
+            Log.e("SC:ack", e.toString());
+        }
+    }
+
+    private static boolean json_bool(JSONObject o, String key) throws JSONException
+    {
+        Object v = o.get(key);
+        if (v instanceof Integer) return ((int)v) != 0;
+        if (v instanceof Boolean) return ((boolean)v);
+        if (v instanceof String) return !Str.equals(((String)v), "0") && !Str.equals(((String)v), "false");
+
+        return o.getBoolean(key);
+    }
+
+    private static int json_int(JSONObject o, String key) throws JSONException
+    {
+        return o.getInt(key);
+    }
+
+    private static String json_str(JSONObject o, String key) throws JSONException
+    {
+        return o.getString(key);
+    }
 }

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/service/FBMService.java

@@ -8,6 +8,7 @@ import com.blackforestbytes.simplecloudnotifier.model.CMessage;
 import com.blackforestbytes.simplecloudnotifier.model.CMessageList;
 import com.blackforestbytes.simplecloudnotifier.model.PriorityEnum;
 import com.blackforestbytes.simplecloudnotifier.model.SCNSettings;
+import com.blackforestbytes.simplecloudnotifier.model.ServerCommunication;
 import com.google.firebase.messaging.FirebaseMessagingService;
 import com.google.firebase.messaging.RemoteMessage;
 
@@ -36,9 +37,9 @@ public class FBMService extends FirebaseMessagingService
             String title      = remoteMessage.getData().get("title");
             String content    = remoteMessage.getData().get("body");
             PriorityEnum prio = PriorityEnum.parseAPI(remoteMessage.getData().get("priority"));
+            long scn_id       = Long.parseLong(remoteMessage.getData().get("scn_msg_id"));
 
-            CMessage msg = CMessageList.inst().add(time, title, content, prio);
-
+            CMessage msg = CMessageList.inst().add(scn_id, time, title, content, prio);
 
             if (SCNApp.isBackground())
             {
@@ -48,6 +49,8 @@ public class FBMService extends FirebaseMessagingService
             {
                 NotificationService.inst().showForeground(msg);
             }
+
+            ServerCommunication.ack(SCNSettings.inst().user_id, SCNSettings.inst().user_key, msg);
         }
         catch (Exception e)
         {

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/service/IABService.java

@@ -0,0 +1,195 @@
+package com.blackforestbytes.simplecloudnotifier.service;
+
+import android.app.Activity;
+import android.content.Context;
+import android.util.Log;
+import android.widget.Toast;
+
+import com.android.billingclient.api.BillingClient;
+import com.android.billingclient.api.BillingClientStateListener;
+import com.android.billingclient.api.BillingFlowParams;
+import com.android.billingclient.api.Purchase;
+import com.android.billingclient.api.PurchasesUpdatedListener;
+import com.blackforestbytes.simplecloudnotifier.SCNApp;
+import com.blackforestbytes.simplecloudnotifier.lib.lambda.Func0to0;
+import com.blackforestbytes.simplecloudnotifier.lib.string.Str;
+import com.blackforestbytes.simplecloudnotifier.model.SCNSettings;
+import com.blackforestbytes.simplecloudnotifier.view.MainActivity;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import androidx.annotation.Nullable;
+
+import static androidx.constraintlayout.widget.Constraints.TAG;
+
+public class IABService implements PurchasesUpdatedListener
+{
+    public static final String IAB_PRO_MODE = "scn.pro.tier1";
+
+    private final static Object _lock = new Object();
+    private static IABService _inst = null;
+    public static IABService inst()
+    {
+        synchronized (_lock)
+        {
+            if (_inst != null) return _inst;
+            throw new Error("IABService == null");
+        }
+    }
+    public static void startup(MainActivity a)
+    {
+        synchronized (_lock)
+        {
+            _inst = new IABService(a);
+        }
+    }
+
+    private BillingClient client;
+    private boolean isServiceConnected;
+    private final List<Purchase> purchases = new ArrayList<>();
+
+    public IABService(Context c)
+    {
+        client = BillingClient
+                .newBuilder(c)
+                .setListener(this)
+                .build();
+
+        startServiceConnection(this::queryPurchases, false);
+    }
+
+    public void queryPurchases()
+    {
+        Func0to0 queryToExecute = () ->
+        {
+            long time = System.currentTimeMillis();
+            Purchase.PurchasesResult purchasesResult = client.queryPurchases(BillingClient.SkuType.INAPP);
+            Log.i(TAG, "Querying purchases elapsed time: " + (System.currentTimeMillis() - time) + "ms");
+
+            if (purchasesResult.getResponseCode() == BillingClient.BillingResponse.OK)
+            {
+                for (Purchase p : purchasesResult.getPurchasesList())
+                {
+                    handlePurchase(p);
+                }
+
+                boolean newProMode = getPurchaseCached(IAB_PRO_MODE) != null;
+                if (newProMode != SCNSettings.inst().promode_local)
+                {
+                    refreshProModeListener();
+                }
+            }
+            else
+            {
+                Log.w(TAG, "queryPurchases() got an error response code: " + purchasesResult.getResponseCode());
+            }
+        };
+
+        executeServiceRequest(queryToExecute, false);
+    }
+
+    public void purchase(Activity a, String id)
+    {
+        executeServiceRequest(() ->
+        {
+            BillingFlowParams flowParams = BillingFlowParams
+                    .newBuilder()
+                    .setSku(id)
+                    .setType(BillingClient.SkuType.INAPP) // SkuType.SUB for subscription
+                    .build();
+            client.launchBillingFlow(a, flowParams);
+        }, true);
+    }
+
+    private void executeServiceRequest(Func0to0 runnable, final boolean userRequest) {
+        if (isServiceConnected)
+        {
+            runnable.invoke();
+        }
+        else
+        {
+            // If billing service was disconnected, we try to reconnect 1 time.
+            // (feel free to introduce your retry policy here).
+            startServiceConnection(runnable, userRequest);
+        }
+    }
+    public void destroy()
+    {
+        if (client != null && client.isReady()) {
+            client.endConnection();
+            client = null;
+            isServiceConnected = false;
+        }
+    }
+
+    @Override
+    public void onPurchasesUpdated(int responseCode, @Nullable List<Purchase> purchases)
+    {
+        if (responseCode == BillingClient.BillingResponse.OK && purchases != null)
+        {
+            for (Purchase purchase : purchases)
+            {
+                handlePurchase(purchase);
+            }
+        }
+        else if (responseCode == BillingClient.BillingResponse.ITEM_ALREADY_OWNED && purchases != null)
+        {
+            for (Purchase purchase : purchases)
+            {
+                handlePurchase(purchase);
+            }
+        }
+    }
+
+    private void handlePurchase(Purchase purchase)
+    {
+        Log.d(TAG, "Got a verified purchase: " + purchase);
+
+        purchases.add(purchase);
+
+        refreshProModeListener();
+    }
+
+    private void refreshProModeListener() {
+        MainActivity ma = SCNApp.getMainActivity();
+        if (ma != null) ma.adpTabs.tab3.updateProState();
+        if (ma != null) ma.adpTabs.tab1.updateProState();
+        SCNSettings.inst().updateProState(null);
+    }
+
+    public void startServiceConnection(final Func0to0 executeOnSuccess, final boolean userRequest)
+    {
+        client.startConnection(new BillingClientStateListener()
+        {
+            @Override
+            public void onBillingSetupFinished(@BillingClient.BillingResponse int billingResponseCode)
+            {
+                if (billingResponseCode == BillingClient.BillingResponse.OK)
+                {
+                    isServiceConnected = true;
+                    if (executeOnSuccess != null) executeOnSuccess.invoke();
+                }
+                else
+                {
+                    if (userRequest) SCNApp.showToast("Could not connect to google services", Toast.LENGTH_SHORT);
+                }
+            }
+
+            @Override
+            public void onBillingServiceDisconnected() {
+                isServiceConnected = false;
+            }
+        });
+    }
+
+    public Purchase getPurchaseCached(String id)
+    {
+        for (Purchase p : purchases)
+        {
+            if (Str.equals(p.getSku(), id)) return p;
+        }
+
+        return null;
+    }
+}

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/service/NotificationService.java

@@ -6,11 +6,14 @@ import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.content.Context;
 import android.content.Intent;
-import android.graphics.Color;
 import android.media.AudioAttributes;
 import android.media.AudioManager;
+import android.media.Ringtone;
+import android.media.RingtoneManager;
 import android.net.Uri;
 import android.os.Build;
+import android.os.VibrationEffect;
+import android.os.Vibrator;
 import android.widget.Toast;
 
 import com.blackforestbytes.simplecloudnotifier.R;
@@ -25,9 +28,7 @@ import androidx.core.app.NotificationCompat;
 
 public class NotificationService
 {
-    private final static String CHANNEL_ID_LOW  = "CHAN_BFB_SCN_MESSAGES_LOW";
-    private final static String CHANNEL_ID_NORM = "CHAN_BFB_SCN_MESSAGES_NORM";
-    private final static String CHANNEL_ID_HIGH = "CHAN_BFB_SCN_MESSAGES_HIGH";
+    private final static String CHANNEL_ID  = "CHAN_BFB_SCN_MESSAGES";
 
     private final static Object _lock = new Object();
     private static NotificationService _inst = null;
@@ -53,72 +54,86 @@ public class NotificationService
         NotificationManager notifman = ctxt.getSystemService(NotificationManager.class);
         if (notifman == null) return;
 
-        NotificationChannel channelLow  = notifman.getNotificationChannel(CHANNEL_ID_LOW);
-        if (channelLow == null) notifman.createNotificationChannel(channelLow = new NotificationChannel(CHANNEL_ID_LOW, "Push notifications (low priority)", NotificationManager.IMPORTANCE_LOW));
-        NotificationChannel channelNorm = notifman.getNotificationChannel(CHANNEL_ID_NORM);
-        if (channelNorm == null) notifman.createNotificationChannel(channelNorm = new NotificationChannel(CHANNEL_ID_NORM, "Push notifications (normal priority)", NotificationManager.IMPORTANCE_DEFAULT));
-        NotificationChannel channelHigh = notifman.getNotificationChannel(CHANNEL_ID_HIGH);
-        if (channelHigh == null) notifman.createNotificationChannel(channelHigh = new NotificationChannel(CHANNEL_ID_HIGH, "Push notifications (high priority)", NotificationManager.IMPORTANCE_HIGH));
-
-        channelLow.setDescription("Messages from the API with priority set to low");
-        channelLow.enableLights(SCNSettings.inst().PriorityLow.EnableLED);
-        channelLow.setLightColor(SCNSettings.inst().PriorityLow.LEDColor);
-        channelLow.enableVibration(SCNSettings.inst().PriorityLow.EnableVibration);
-        channelLow.setVibrationPattern(new long[]{200});
-
-        channelNorm.setDescription("Messages from the API with priority set to normal");
-        channelNorm.enableLights(SCNSettings.inst().PriorityNorm.EnableLED);
-        channelNorm.setLightColor(SCNSettings.inst().PriorityNorm.LEDColor);
-        channelNorm.enableVibration(SCNSettings.inst().PriorityNorm.EnableVibration);
-        channelNorm.setVibrationPattern(new long[]{200});
-
-        channelHigh.setDescription("Messages from the API with priority set to high");
-        channelHigh.enableLights(SCNSettings.inst().PriorityHigh.EnableLED);
-        channelHigh.setLightColor(SCNSettings.inst().PriorityHigh.LEDColor);
-        channelHigh.enableVibration(SCNSettings.inst().PriorityHigh.EnableVibration);
-        channelHigh.setVibrationPattern(new long[]{200});
-        channelLow.setBypassDnd(true);
-        channelLow.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
+        NotificationChannel channel  = notifman.getNotificationChannel(CHANNEL_ID);
+        if (channel == null)
+        {
+            channel = new NotificationChannel(CHANNEL_ID, "Push notifications", NotificationManager.IMPORTANCE_DEFAULT);
+            channel.setDescription("Push notifications from the server");
+            channel.setSound(null, null);
+            channel.setVibrationPattern(null);
+            notifman.createNotificationChannel(channel);
+        }
     }
 
     public void showForeground(CMessage msg)
     {
         SCNApp.showToast("Message recieved: " + msg.Title, Toast.LENGTH_LONG);
+
+        try
+        {
+            NotificationSettings ns = SCNSettings.inst().PriorityNorm;
+            switch (msg.Priority)
+            {
+                case LOW:    ns = SCNSettings.inst().PriorityLow;  break;
+                case NORMAL: ns = SCNSettings.inst().PriorityNorm; break;
+                case HIGH:   ns = SCNSettings.inst().PriorityHigh; break;
+            }
+
+            if (ns.EnableSound && !ns.SoundSource.isEmpty())
+            {
+                Ringtone rt = RingtoneManager.getRingtone(SCNApp.getContext(), Uri.parse(ns.SoundSource));
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) rt.setLooping(false);
+                rt.play();
+                new Thread(() -> { try { Thread.sleep(5*1000); } catch (InterruptedException e) { /* */ } rt.stop(); }).start();
+            }
+
+            if (ns.EnableVibration)
+            {
+                Vibrator v = (Vibrator) SCNApp.getContext().getSystemService(Context.VIBRATOR_SERVICE);
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                    v.vibrate(VibrationEffect.createOneShot(1500, VibrationEffect.DEFAULT_AMPLITUDE));
+                } else {
+                    v.vibrate(1500);
+                }
+            }
+        }
+        catch (Exception e)
+        {
+            e.printStackTrace();
+        }
     }
 
     public void showBackground(CMessage msg)
     {
         Context ctxt = SCNApp.getContext();
 
-        String channel = CHANNEL_ID_NORM;
         NotificationSettings ns = SCNSettings.inst().PriorityNorm;
         switch (msg.Priority)
         {
-            case LOW:    ns = SCNSettings.inst().PriorityLow;  channel = CHANNEL_ID_LOW;  break;
-            case NORMAL: ns = SCNSettings.inst().PriorityNorm; channel = CHANNEL_ID_NORM; break;
-            case HIGH:   ns = SCNSettings.inst().PriorityHigh; channel = CHANNEL_ID_HIGH; break;
+            case LOW:    ns = SCNSettings.inst().PriorityLow;  break;
+            case NORMAL: ns = SCNSettings.inst().PriorityNorm; break;
+            case HIGH:   ns = SCNSettings.inst().PriorityHigh; break;
         }
 
-        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(ctxt, channel);
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O)
+        {
+            // old
+
+            NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(ctxt, CHANNEL_ID);
             mBuilder.setSmallIcon(R.drawable.ic_bfb);
             mBuilder.setContentTitle(msg.Title);
             mBuilder.setContentText(msg.Content);
             mBuilder.setShowWhen(true);
-        mBuilder.setWhen(msg.Timestamp);
+            mBuilder.setWhen(msg.Timestamp * 1000);
             mBuilder.setAutoCancel(true);
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O)
-        {
+
             if (msg.Priority == PriorityEnum.LOW)    mBuilder.setPriority(NotificationCompat.PRIORITY_LOW);
             if (msg.Priority == PriorityEnum.NORMAL) mBuilder.setPriority(NotificationCompat.PRIORITY_DEFAULT);
             if (msg.Priority == PriorityEnum.HIGH)   mBuilder.setPriority(NotificationCompat.PRIORITY_HIGH);
-            if (ns.EnableVibration) mBuilder.setVibrate(new long[]{200});
+            if (ns.EnableVibration) mBuilder.setVibrate(new long[]{500});
             if (ns.EnableLED) mBuilder.setLights(ns.LEDColor, 500, 500);
-        }
 
-        if (ns.EnableSound && !ns.SoundSource.isEmpty())
-        {
-            mBuilder.setSound(Uri.parse(ns.SoundSource), AudioManager.STREAM_ALARM);
-        }
+            if (ns.EnableSound && !ns.SoundSource.isEmpty()) mBuilder.setSound(Uri.parse(ns.SoundSource), AudioManager.STREAM_NOTIFICATION);
 
             Intent intent = new Intent(ctxt, MainActivity.class);
             PendingIntent pi = PendingIntent.getActivity(ctxt, 0, intent, 0);
@@ -130,4 +145,48 @@ public class NotificationService
 
             if (mNotificationManager != null) mNotificationManager.notify(0, n);
         }
+        else
+        {
+            // new
+
+            NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(ctxt, CHANNEL_ID);
+            mBuilder.setSmallIcon(R.drawable.ic_bfb);
+            mBuilder.setContentTitle(msg.Title);
+            mBuilder.setContentText(msg.Content);
+            mBuilder.setShowWhen(true);
+            mBuilder.setWhen(msg.Timestamp * 1000);
+            mBuilder.setAutoCancel(true);
+            
+            if (ns.EnableLED) mBuilder.setLights(ns.LEDColor, 500, 500);
+
+            if (msg.Priority == PriorityEnum.LOW)    mBuilder.setPriority(NotificationCompat.PRIORITY_LOW);
+            if (msg.Priority == PriorityEnum.NORMAL) mBuilder.setPriority(NotificationCompat.PRIORITY_DEFAULT);
+            if (msg.Priority == PriorityEnum.HIGH)   mBuilder.setPriority(NotificationCompat.PRIORITY_HIGH);
+
+            Intent intent = new Intent(ctxt, MainActivity.class);
+            PendingIntent pi = PendingIntent.getActivity(ctxt, 0, intent, 0);
+            mBuilder.setContentIntent(pi);
+            NotificationManager mNotificationManager = (NotificationManager) ctxt.getSystemService(Context.NOTIFICATION_SERVICE);
+            if (mNotificationManager == null) return;
+
+            Notification n = mBuilder.build();
+            n.flags |= Notification.FLAG_AUTO_CANCEL;
+
+            mNotificationManager.notify(0, n);
+
+            if (ns.EnableSound && !ns.SoundSource.isEmpty())
+            {
+                Ringtone rt = RingtoneManager.getRingtone(SCNApp.getContext(), Uri.parse(ns.SoundSource));
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) rt.setLooping(false);
+                rt.play();
+                new Thread(() -> { try { Thread.sleep(5*1000); } catch (InterruptedException e) { /* */ } rt.stop(); }).start();
+            }
+
+            if (ns.EnableVibration)
+            {
+                Vibrator v = (Vibrator) SCNApp.getContext().getSystemService(Context.VIBRATOR_SERVICE);
+                v.vibrate(VibrationEffect.createOneShot(1500, VibrationEffect.DEFAULT_AMPLITUDE));
+            }
+        }
+    }
 }

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/view/AccountFragment.java

@@ -1,8 +1,10 @@
 package com.blackforestbytes.simplecloudnotifier.view;
 
 import android.annotation.SuppressLint;
+import android.app.Activity;
 import android.content.ClipData;
 import android.content.ClipboardManager;
+import android.content.DialogInterface;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
@@ -21,6 +23,7 @@ import net.glxn.qrgen.android.QRCode;
 import net.glxn.qrgen.core.image.ImageType;
 
 import androidx.annotation.NonNull;
+import androidx.appcompat.app.AlertDialog;
 import androidx.fragment.app.Fragment;
 
 import static android.content.Context.CLIPBOARD_SERVICE;
@@ -55,15 +58,47 @@ public class AccountFragment extends Fragment
 
         v.findViewById(R.id.btnAccountReset).setOnClickListener(cv ->
         {
+            Activity a = getActivity();
+            if (a == null) return;
+
+            AlertDialog.Builder builder = new AlertDialog.Builder(a);
+
+            builder.setTitle("Confirm");
+            builder.setMessage("Reset account key?");
+
+            builder.setPositiveButton("YES", (dialog, which) -> {
                 View lpnl = v.findViewById(R.id.loadingPanel);
                 lpnl.setVisibility(View.VISIBLE);
                 SCNSettings.inst().reset(lpnl);
+                dialog.dismiss();
+            });
+
+            builder.setNegativeButton("NO", (dialog, which) -> dialog.dismiss());
+
+            AlertDialog alert = builder.create();
+            alert.show();
         });
 
         v.findViewById(R.id.btnClearLocalStorage).setOnClickListener(cv ->
         {
+            Activity a = getActivity();
+            if (a == null) return;
+
+            AlertDialog.Builder builder = new AlertDialog.Builder(a);
+
+            builder.setTitle("Confirm");
+            builder.setMessage("Clear local messages?");
+
+            builder.setPositiveButton("YES", (dialog, which) -> {
                 CMessageList.inst().clear();
                 SCNApp.showToast("Notifications cleared", 1000);
+                dialog.dismiss();
+            });
+
+            builder.setNegativeButton("NO", (dialog, which) -> dialog.dismiss());
+
+            AlertDialog alert = builder.create();
+            alert.show();
         });
 
         v.findViewById(R.id.btnQR).setOnClickListener(cv ->

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/view/MainActivity.java

@@ -1,17 +1,15 @@
 package com.blackforestbytes.simplecloudnotifier.view;
 
-import android.net.Uri;
 import android.os.Bundle;
 
 import com.blackforestbytes.simplecloudnotifier.R;
 import com.blackforestbytes.simplecloudnotifier.SCNApp;
 import com.blackforestbytes.simplecloudnotifier.model.CMessageList;
 import com.blackforestbytes.simplecloudnotifier.model.SCNSettings;
+import com.blackforestbytes.simplecloudnotifier.service.IABService;
 import com.blackforestbytes.simplecloudnotifier.service.NotificationService;
 import com.google.android.material.tabs.TabLayout;
 
-import org.jetbrains.annotations.NotNull;
-
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.appcompat.widget.Toolbar;
 import androidx.viewpager.widget.PagerAdapter;
@@ -42,7 +40,7 @@ public class MainActivity extends AppCompatActivity
         tabLayout.setupWithViewPager(viewPager);
 
         SCNApp.register(this);
-
+        IABService.startup(this);
         SCNSettings.inst().work(this);
     }
 
@@ -51,6 +49,16 @@ public class MainActivity extends AppCompatActivity
     {
         super.onStop();
 
+        SCNSettings.inst().save();
         CMessageList.inst().fullSave();
     }
+
+    @Override
+    protected void onDestroy()
+    {
+        super.onDestroy();
+
+        CMessageList.inst().fullSave();
+        IABService.inst().destroy();
+    }
 }

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/view/NotificationsFragment.java

@@ -6,6 +6,8 @@ import android.view.View;
 import android.view.ViewGroup;
 
 import com.blackforestbytes.simplecloudnotifier.R;
+import com.blackforestbytes.simplecloudnotifier.model.SCNSettings;
+import com.blackforestbytes.simplecloudnotifier.service.IABService;
 import com.google.android.gms.ads.doubleclick.PublisherAdRequest;
 import com.google.android.gms.ads.doubleclick.PublisherAdView;
 
@@ -16,6 +18,8 @@ import androidx.recyclerview.widget.RecyclerView;
 
 public class NotificationsFragment extends Fragment
 {
+    private PublisherAdView adView;
+
     public NotificationsFragment()
     {
         // Required empty public constructor
@@ -30,11 +34,17 @@ public class NotificationsFragment extends Fragment
         rvMessages.setLayoutManager(new LinearLayoutManager(this.getContext(), RecyclerView.VERTICAL, true));
         rvMessages.setAdapter(new MessageAdapter(v.findViewById(R.id.tvNoElements)));
 
-        PublisherAdView mPublisherAdView = v.findViewById(R.id.adBanner);
+        adView = v.findViewById(R.id.adBanner);
         PublisherAdRequest adRequest = new PublisherAdRequest.Builder().build();
-        mPublisherAdView.loadAd(adRequest);
+        adView.loadAd(adRequest);
+
+        adView.setVisibility(SCNSettings.inst().promode_local ? View.GONE : View.VISIBLE);
 
         return v;
     }
 
+    public void updateProState()
+    {
+        if (adView != null) adView.setVisibility(IABService.inst().getPurchaseCached(IABService.IAB_PRO_MODE) != null ? View.GONE : View.VISIBLE);
+    }
 }

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/view/SettingsFragment.java

@@ -1,6 +1,5 @@
 package com.blackforestbytes.simplecloudnotifier.view;
 
-import android.app.NotificationManager;
 import android.content.Context;
 import android.media.AudioManager;
 import android.net.Uri;
@@ -16,8 +15,10 @@ import android.widget.Spinner;
 import android.widget.Switch;
 import android.widget.TextView;
 
+import com.android.billingclient.api.Purchase;
 import com.blackforestbytes.simplecloudnotifier.R;
 import com.blackforestbytes.simplecloudnotifier.model.SCNSettings;
+import com.blackforestbytes.simplecloudnotifier.service.IABService;
 import com.blackforestbytes.simplecloudnotifier.service.NotificationService;
 
 import org.jetbrains.annotations.NotNull;
@@ -33,6 +34,8 @@ public class SettingsFragment extends Fragment implements MusicPickerListener
     private Switch    prefAppEnabled;
     private Spinner   prefLocalCacheSize;
     private Button    prefUpgradeAccount;
+    private TextView  prefUpgradeAccount_msg;
+    private TextView  prefUpgradeAccount_info;
 
     private Switch    prefMsgLowEnableSound;
     private TextView  prefMsgLowRingtone_value;
@@ -85,6 +88,8 @@ public class SettingsFragment extends Fragment implements MusicPickerListener
         prefAppEnabled                = v.findViewById(R.id.prefAppEnabled);
         prefLocalCacheSize            = v.findViewById(R.id.prefLocalCacheSize);
         prefUpgradeAccount            = v.findViewById(R.id.prefUpgradeAccount);
+        prefUpgradeAccount_msg        = v.findViewById(R.id.prefUpgradeAccount2);
+        prefUpgradeAccount_info       = v.findViewById(R.id.prefUpgradeAccount_info);
 
         prefMsgLowEnableSound         = v.findViewById(R.id.prefMsgLowEnableSound);
         prefMsgLowRingtone_value      = v.findViewById(R.id.prefMsgLowRingtone_value);
@@ -122,6 +127,10 @@ public class SettingsFragment extends Fragment implements MusicPickerListener
 
         if (prefAppEnabled.isChecked() != s.Enabled) prefAppEnabled.setChecked(s.Enabled);
 
+        prefUpgradeAccount.setVisibility(     SCNSettings.inst().promode_local ? View.GONE    : View.VISIBLE);
+        prefUpgradeAccount_info.setVisibility(SCNSettings.inst().promode_local ? View.GONE    : View.VISIBLE);
+        prefUpgradeAccount_msg.setVisibility( SCNSettings.inst().promode_local ? View.VISIBLE : View.GONE   );
+
         ArrayAdapter<Integer> plcsa = new ArrayAdapter<>(c, android.R.layout.simple_spinner_item, SCNSettings.CHOOSABLE_CACHE_SIZES);
         plcsa.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
         prefLocalCacheSize.setAdapter(plcsa);
@@ -192,12 +201,20 @@ public class SettingsFragment extends Fragment implements MusicPickerListener
     {
         SCNSettings.inst().save();
         updateUI();
-        NotificationService.inst().updateChannels();
     }
 
     private void onUpgradeAccount()
     {
-        //TODO
+        IABService.inst().purchase(getActivity(), IABService.IAB_PRO_MODE);
+    }
+
+    public void updateProState()
+    {
+        Purchase p = IABService.inst().getPurchaseCached(IABService.IAB_PRO_MODE);
+
+        if (prefUpgradeAccount != null)      prefUpgradeAccount.setVisibility(     p != null ? View.GONE    : View.VISIBLE);
+        if (prefUpgradeAccount_info != null) prefUpgradeAccount_info.setVisibility(p != null ? View.GONE    : View.VISIBLE);
+        if (prefUpgradeAccount_msg != null)  prefUpgradeAccount_msg.setVisibility( p != null ? View.VISIBLE : View.GONE   );
     }
 
     private int getCacheSizeIndex(int value)

android/app/src/main/res/layout/fragment_settings.xml

@@ -4,7 +4,6 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
-    tools:ignore="TooManyViews"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context=".view.SettingsFragment">
@@ -33,23 +32,14 @@
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content" />
 
-                <androidx.constraintlayout.widget.ConstraintLayout
+                <Switch
                     android:layout_marginStart="4dp"
                     android:layout_marginEnd="4dp"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:minHeight="48dp">
-
-                    <Switch
                     android:id="@+id/prefAppEnabled"
                     android:text="@string/str_enabled"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                        app:layout_constraintBottom_toBottomOf="parent"
-                        app:layout_constraintEnd_toEndOf="parent"
-                        app:layout_constraintTop_toTopOf="parent" />
-
-                </androidx.constraintlayout.widget.ConstraintLayout>
+                    android:minHeight="48dp" />
 
                 <View
                     android:layout_width="match_parent"
@@ -96,23 +86,38 @@
                     android:layout_marginTop="2dp"
                     android:background="#c0c0c0"/>
 
-                <androidx.constraintlayout.widget.ConstraintLayout
+                <LinearLayout
+                    android:orientation="vertical"
                     android:layout_marginStart="4dp"
                     android:layout_marginEnd="4dp"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
+                    android:gravity="center|center"
                     android:minHeight="48dp">
 
                     <Button
                         android:id="@+id/prefUpgradeAccount"
                         android:text="@string/str_upgrade_account"
                         android:layout_width="match_parent"
-                        android:layout_height="wrap_content"
-                        app:layout_constraintBottom_toBottomOf="parent"
-                        app:layout_constraintEnd_toEndOf="parent"
-                        app:layout_constraintTop_toTopOf="parent" />
+                        android:layout_height="wrap_content" />
 
-                </androidx.constraintlayout.widget.ConstraintLayout>
+                    <TextView
+                        android:id="@+id/prefUpgradeAccount_info"
+                        android:textAlignment="center"
+                        android:text="@string/str_promode_info"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content" />
+
+                    <TextView
+                        android:id="@+id/prefUpgradeAccount2"
+                        android:textColor="#FF4D00"
+                        android:textStyle="bold"
+                        android:textAlignment="center"
+                        android:text="@string/str_promode"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content" />
+
+                </LinearLayout>
 
             </LinearLayout>
 
@@ -137,23 +142,14 @@
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content" />
 
-                <androidx.constraintlayout.widget.ConstraintLayout
-                    android:layout_marginStart="4dp"
-                    android:layout_marginEnd="4dp"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:minHeight="48dp">
-
                 <Switch
                     android:id="@+id/prefMsgLowEnableSound"
                     android:text="@string/str_msg_enablesound"
+                    android:layout_marginStart="4dp"
+                    android:layout_marginEnd="4dp"
+                    android:minHeight="48dp"
                     android:layout_width="match_parent"
-                        android:layout_height="wrap_content"
-                        app:layout_constraintBottom_toBottomOf="parent"
-                        app:layout_constraintEnd_toEndOf="parent"
-                        app:layout_constraintTop_toTopOf="parent" />
-
-                </androidx.constraintlayout.widget.ConstraintLayout>
+                    android:layout_height="wrap_content"/>
 
                 <View
                     android:layout_width="match_parent"
@@ -162,20 +158,15 @@
                     android:layout_marginTop="2dp"
                     android:background="#c0c0c0"/>
 
-                <androidx.constraintlayout.widget.ConstraintLayout
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:layout_marginStart="4dp"
-                    android:layout_marginEnd="4dp"
-                    android:minHeight="48dp">
-
                 <LinearLayout
                     android:id="@+id/prefMsgLowRingtone_container"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
                     android:orientation="vertical"
-                        app:layout_constraintBottom_toBottomOf="parent"
-                        app:layout_constraintTop_toTopOf="parent">
+                    android:layout_marginStart="4dp"
+                    android:layout_marginEnd="4dp"
+                    android:minHeight="48dp"
+                    android:gravity="center">
 
                     <TextView
                         android:id="@+id/tvMsgLowRingtone"
@@ -192,9 +183,8 @@
                         android:spinnerMode="dialog"
                         android:text="Whatever"
                         tools:ignore="HardcodedText" />
-                    </LinearLayout>
 
-                </androidx.constraintlayout.widget.ConstraintLayout>
+                </LinearLayout>
 
                 <View
                     android:layout_width="match_parent"
@@ -203,23 +193,14 @@
                     android:layout_marginTop="2dp"
                     android:background="#c0c0c0"/>
 
-                <androidx.constraintlayout.widget.ConstraintLayout
-                    android:layout_marginStart="4dp"
-                    android:layout_marginEnd="4dp"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:minHeight="48dp">
-
                 <Switch
                     android:id="@+id/prefMsgLowRepeatSound"
                     android:text="@string/str_repeatnotificationsound"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                        app:layout_constraintBottom_toBottomOf="parent"
-                        app:layout_constraintEnd_toEndOf="parent"
-                        app:layout_constraintTop_toTopOf="parent" />
-
-                </androidx.constraintlayout.widget.ConstraintLayout>
+                    android:layout_marginStart="4dp"
+                    android:layout_marginEnd="4dp"
+                    android:minHeight="48dp" />
 
                 <View
                     android:layout_width="match_parent"
@@ -228,23 +209,14 @@
                     android:layout_marginTop="2dp"
                     android:background="#c0c0c0"/>
 
-                <androidx.constraintlayout.widget.ConstraintLayout
-                    android:layout_marginStart="4dp"
-                    android:layout_marginEnd="4dp"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:minHeight="48dp">
-
                 <Switch
                     android:id="@+id/prefMsgLowEnableLED"
                     android:text="@string/str_enable_led"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                        app:layout_constraintBottom_toBottomOf="parent"
-                        app:layout_constraintEnd_toEndOf="parent"
-                        app:layout_constraintTop_toTopOf="parent" />
-
-                </androidx.constraintlayout.widget.ConstraintLayout>
+                    android:layout_marginStart="4dp"
+                    android:layout_marginEnd="4dp"
+                    android:minHeight="48dp" />
 
                 <View
                     android:layout_width="match_parent"
@@ -294,23 +266,15 @@
                     android:layout_marginTop="2dp"
                     android:background="#c0c0c0"/>
 
-                <androidx.constraintlayout.widget.ConstraintLayout
-                    android:layout_marginStart="4dp"
-                    android:layout_marginEnd="4dp"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:minHeight="48dp">
-
                 <Switch
                     android:id="@+id/prefMsgLowEnableVibrations"
                     android:text="@string/str_enable_vibration"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                        app:layout_constraintBottom_toBottomOf="parent"
-                        app:layout_constraintEnd_toEndOf="parent"
-                        app:layout_constraintTop_toTopOf="parent" />
+                    android:layout_marginStart="4dp"
+                    android:layout_marginEnd="4dp"
+                    android:minHeight="48dp" />
 
-                </androidx.constraintlayout.widget.ConstraintLayout>
 
             </LinearLayout>
 
@@ -335,23 +299,14 @@
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content" />
 
-                <androidx.constraintlayout.widget.ConstraintLayout
-                    android:layout_marginStart="4dp"
-                    android:layout_marginEnd="4dp"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:minHeight="48dp">
-
                 <Switch
                     android:id="@+id/prefMsgNormEnableSound"
                     android:text="@string/str_msg_enablesound"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                        app:layout_constraintBottom_toBottomOf="parent"
-                        app:layout_constraintEnd_toEndOf="parent"
-                        app:layout_constraintTop_toTopOf="parent" />
-
-                </androidx.constraintlayout.widget.ConstraintLayout>
+                    android:layout_marginStart="4dp"
+                    android:layout_marginEnd="4dp"
+                    android:minHeight="48dp" />
 
                 <View
                     android:layout_width="match_parent"
@@ -360,20 +315,15 @@
                     android:layout_marginTop="2dp"
                     android:background="#c0c0c0"/>
 
-                <androidx.constraintlayout.widget.ConstraintLayout
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:layout_marginStart="4dp"
-                    android:layout_marginEnd="4dp"
-                    android:minHeight="48dp">
-
                 <LinearLayout
                     android:id="@+id/prefMsgNormRingtone_container"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
                     android:orientation="vertical"
-                        app:layout_constraintBottom_toBottomOf="parent"
-                        app:layout_constraintTop_toTopOf="parent">
+                    android:layout_marginStart="4dp"
+                    android:layout_marginEnd="4dp"
+                    android:minHeight="48dp"
+                    android:gravity="center">
 
                     <TextView
                         android:id="@+id/tvMsgNormRingtone"
@@ -392,8 +342,6 @@
                         tools:ignore="HardcodedText" />
                 </LinearLayout>
 
-                </androidx.constraintlayout.widget.ConstraintLayout>
-
                 <View
                     android:layout_width="match_parent"
                     android:layout_height="1dp"
@@ -401,23 +349,14 @@
                     android:layout_marginTop="2dp"
                     android:background="#c0c0c0"/>
 
-                <androidx.constraintlayout.widget.ConstraintLayout
-                    android:layout_marginStart="4dp"
-                    android:layout_marginEnd="4dp"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:minHeight="48dp">
-
                 <Switch
                     android:id="@+id/prefMsgNormRepeatSound"
                     android:text="@string/str_repeatnotificationsound"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                        app:layout_constraintBottom_toBottomOf="parent"
-                        app:layout_constraintEnd_toEndOf="parent"
-                        app:layout_constraintTop_toTopOf="parent" />
-
-                </androidx.constraintlayout.widget.ConstraintLayout>
+                    android:layout_marginStart="4dp"
+                    android:layout_marginEnd="4dp"
+                    android:minHeight="48dp" />
 
                 <View
                     android:layout_width="match_parent"
@@ -426,23 +365,14 @@
                     android:layout_marginTop="2dp"
                     android:background="#c0c0c0"/>
 
-                <androidx.constraintlayout.widget.ConstraintLayout
-                    android:layout_marginStart="4dp"
-                    android:layout_marginEnd="4dp"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:minHeight="48dp">
-
                 <Switch
                     android:id="@+id/prefMsgNormEnableLED"
                     android:text="@string/str_enable_led"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                        app:layout_constraintBottom_toBottomOf="parent"
-                        app:layout_constraintEnd_toEndOf="parent"
-                        app:layout_constraintTop_toTopOf="parent" />
-
-                </androidx.constraintlayout.widget.ConstraintLayout>
+                    android:layout_marginStart="4dp"
+                    android:layout_marginEnd="4dp"
+                    android:minHeight="48dp" />
 
                 <View
                     android:layout_width="match_parent"
@@ -492,23 +422,14 @@
                     android:layout_marginTop="2dp"
                     android:background="#c0c0c0"/>
 
-                <androidx.constraintlayout.widget.ConstraintLayout
-                    android:layout_marginStart="4dp"
-                    android:layout_marginEnd="4dp"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:minHeight="48dp">
-
                 <Switch
                     android:id="@+id/prefMsgNormEnableVibrations"
                     android:text="@string/str_enable_vibration"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                        app:layout_constraintBottom_toBottomOf="parent"
-                        app:layout_constraintEnd_toEndOf="parent"
-                        app:layout_constraintTop_toTopOf="parent" />
-
-                </androidx.constraintlayout.widget.ConstraintLayout>
+                    android:layout_marginStart="4dp"
+                    android:layout_marginEnd="4dp"
+                    android:minHeight="48dp" />
 
             </LinearLayout>
 
@@ -533,23 +454,14 @@
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content" />
 
-                <androidx.constraintlayout.widget.ConstraintLayout
-                    android:layout_marginStart="4dp"
-                    android:layout_marginEnd="4dp"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:minHeight="48dp">
-
                 <Switch
                     android:id="@+id/prefMsgHighEnableSound"
                     android:text="@string/str_msg_enablesound"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                        app:layout_constraintBottom_toBottomOf="parent"
-                        app:layout_constraintEnd_toEndOf="parent"
-                        app:layout_constraintTop_toTopOf="parent" />
-
-                </androidx.constraintlayout.widget.ConstraintLayout>
+                    android:layout_marginStart="4dp"
+                    android:layout_marginEnd="4dp"
+                    android:minHeight="48dp" />
 
                 <View
                     android:layout_width="match_parent"
@@ -558,18 +470,15 @@
                     android:layout_marginTop="2dp"
                     android:background="#c0c0c0"/>
 
-                <androidx.constraintlayout.widget.ConstraintLayout
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:layout_marginStart="4dp"
-                    android:layout_marginEnd="4dp"
-                    android:minHeight="48dp">
-
                 <LinearLayout
                     android:id="@+id/prefMsgHighRingtone_container"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
+                    android:layout_marginStart="4dp"
+                    android:layout_marginEnd="4dp"
+                    android:minHeight="48dp"
                     android:orientation="vertical"
+                    android:gravity="center"
                     app:layout_constraintBottom_toBottomOf="parent"
                     app:layout_constraintTop_toTopOf="parent">
 
@@ -590,8 +499,6 @@
                         tools:ignore="HardcodedText" />
                 </LinearLayout>
 
-                </androidx.constraintlayout.widget.ConstraintLayout>
-
                 <View
                     android:layout_width="match_parent"
                     android:layout_height="1dp"
@@ -599,23 +506,14 @@
                     android:layout_marginTop="2dp"
                     android:background="#c0c0c0"/>
 
-                <androidx.constraintlayout.widget.ConstraintLayout
-                    android:layout_marginStart="4dp"
-                    android:layout_marginEnd="4dp"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:minHeight="48dp">
-
                 <Switch
                     android:id="@+id/prefMsgHighRepeatSound"
                     android:text="@string/str_repeatnotificationsound"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                        app:layout_constraintBottom_toBottomOf="parent"
-                        app:layout_constraintEnd_toEndOf="parent"
-                        app:layout_constraintTop_toTopOf="parent" />
-
-                </androidx.constraintlayout.widget.ConstraintLayout>
+                    android:layout_marginStart="4dp"
+                    android:layout_marginEnd="4dp"
+                    android:minHeight="48dp" />
 
                 <View
                     android:layout_width="match_parent"
@@ -624,23 +522,14 @@
                     android:layout_marginTop="2dp"
                     android:background="#c0c0c0"/>
 
-                <androidx.constraintlayout.widget.ConstraintLayout
-                    android:layout_marginStart="4dp"
-                    android:layout_marginEnd="4dp"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:minHeight="48dp">
-
                 <Switch
                     android:id="@+id/prefMsgHighEnableLED"
                     android:text="@string/str_enable_led"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                        app:layout_constraintBottom_toBottomOf="parent"
-                        app:layout_constraintEnd_toEndOf="parent"
-                        app:layout_constraintTop_toTopOf="parent" />
-
-                </androidx.constraintlayout.widget.ConstraintLayout>
+                    android:layout_marginStart="4dp"
+                    android:layout_marginEnd="4dp"
+                    android:minHeight="48dp" />
 
                 <View
                     android:layout_width="match_parent"
@@ -690,23 +579,14 @@
                     android:layout_marginTop="2dp"
                     android:background="#c0c0c0"/>
 
-                <androidx.constraintlayout.widget.ConstraintLayout
-                    android:layout_marginStart="4dp"
-                    android:layout_marginEnd="4dp"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:minHeight="48dp">
-
                 <Switch
                     android:id="@+id/prefMsgHighEnableVibrations"
                     android:text="@string/str_enable_vibration"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                        app:layout_constraintBottom_toBottomOf="parent"
-                        app:layout_constraintEnd_toEndOf="parent"
-                        app:layout_constraintTop_toTopOf="parent" />
-
-                </androidx.constraintlayout.widget.ConstraintLayout>
+                    android:layout_marginStart="4dp"
+                    android:layout_marginEnd="4dp"
+                    android:minHeight="48dp" />
 
             </LinearLayout>
 

android/app/src/main/res/values/strings.xml

@@ -18,9 +18,9 @@
     <string name="str_common_settings">Common Settings</string>
     <string name="str_enabled">Enabled</string>
     <string name="str_localcachesize">Remember the last x notifications locally</string>
-    <string name="str_header_prio0">Notifications (low priority)</string>
-    <string name="str_header_prio1">Notifications (normal priority)</string>
-    <string name="str_header_prio2">Notifications (high priority)</string>
+    <string name="str_header_prio0">Notifications (priority 0 - Low)</string>
+    <string name="str_header_prio1">Notifications (priority 1 - Normal)</string>
+    <string name="str_header_prio2">Notifications (priority 2 - High)</string>
     <string name="str_msg_enablesound">Enable notification sound</string>
     <string name="str_notificationsound">Notification sound</string>
     <string name="str_repeatnotificationsound">Repeat notification sound</string>
@@ -28,4 +28,6 @@
     <string name="str_ledcolor">Notification light color</string>
     <string name="str_enable_vibration">Enable notification vibration</string>
     <string name="str_upgrade_account">Upgrade account</string>
+    <string name="str_promode">Thank you for supporting the app and using the pro mode</string>
+    <string name="str_promode_info">Increase your daily quota, remove the ad banner and support the developer (that\'s me)</string>
 </resources>

android/app/version.properties

@@ -1,3 +1,3 @@
-#Mon Oct 22 15:29:01 CEST 2018
-VERSION_NAME=0.0.4
-VERSION_CODE=4
+#Mon Nov 12 13:06:09 CET 2018
+VERSION_NAME=0.0.6
+VERSION_CODE=6

android/build.gradle

@@ -8,7 +8,7 @@ buildscript {
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:3.2.1'
-        classpath 'com.google.gms:google-services:4.0.1'
+        classpath 'com.google.gms:google-services:4.2.0'
     }
 }
 

web/.gitignore

@@ -181,3 +181,4 @@ $RECYCLE.BIN/
 #################
 
 config.php
+.verify_accesstoken

web/ack.php

@@ -0,0 +1,47 @@
+<?php
+
+include_once 'model.php';
+
+$INPUT = array_merge($_GET, $_POST);
+
+
+if (!isset($INPUT['user_id']))    die(json_encode(['success' => false, 'errid'=>101, 'message' => 'Missing parameter [[user_id]]']));
+if (!isset($INPUT['user_key']))   die(json_encode(['success' => false, 'errid'=>102, 'message' => 'Missing parameter [[user_key]]']));
+if (!isset($INPUT['scn_msg_id'])) die(json_encode(['success' => false, 'errid'=>103, 'message' => 'Missing parameter [[scn_msg_id]]']));
+
+$user_id    = $INPUT['user_id'];
+$user_key   = $INPUT['user_key'];
+$scn_msg_id = $INPUT['scn_msg_id'];
+
+//----------------------
+
+$pdo = getDatabase();
+
+$stmt = $pdo->prepare('SELECT user_id, user_key, quota_today, is_pro, quota_day, fcm_token FROM users WHERE user_id = :uid LIMIT 1');
+$stmt->execute(['uid' => $user_id]);
+$datas = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+if (count($datas)<=0) die(json_encode(['success' => false, 'errid'=>201, 'message' => 'User not found']));
+$data = $datas[0];
+
+if ($data === null)                     die(json_encode(['success' => false, 'errid'=>202, 'message' => 'User not found']));
+if ($data['user_id'] !== (int)$user_id) die(json_encode(['success' => false, 'errid'=>203, 'message' => 'UserID not found']));
+if ($data['user_key'] !== $user_key)    die(json_encode(['success' => false, 'errid'=>204, 'message' => 'Authentification failed']));
+
+$stmt = $pdo->prepare('SELECT ack FROM messages WHERE scn_message_id=:smid AND sender_user_id=:uid LIMIT 1');
+$stmt->execute(['smid' => $scn_msg_id, 'uid' => $user_id]);
+$datas = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+if (count($datas)<=0) die(json_encode(['success' => false, 'errid'=>301, 'message' => 'Message not found']));
+
+$stmt = $pdo->prepare('UPDATE messages SET ack=1 WHERE scn_message_id=:smid AND sender_user_id=:uid');
+$stmt->execute(['smid' => $scn_msg_id, 'uid' => $user_id]);
+
+echo json_encode(
+[
+	'success'        => true,
+	'prev_ack'       => $datas[0]['ack'],
+	'new_ack'        => 1,
+	'message'        => 'ok'
+]);
+return 0;

web/css/style.css

@@ -22,12 +22,24 @@ body
 #mainpnl
 {
     box-shadow: 0 0 32px #DDD;
-    animation:blink-shadow ease-in-out 4s infinite;
+    //animation:blink-shadow ease-in-out 4s infinite;
     width: 87%;
     min-width: 300px;
     max-width: 900px;
     position: relative;
-    min-height: 485px;
+    min-height: 570px;
+
+    background: var(--form-back-color);
+    color: var(--form-fore-color);
+    border: .0625rem solid var(--form-border-color);
+    border-radius: var(--universal-border-radius);
+    margin: 32px .5rem;
+    padding: calc(2 * var(--universal-padding)) var(--universal-padding);
+}
+
+.red-code
+{
+    border-left: .25rem solid #E53935;
 }
 
 #mainpnl input,
@@ -178,6 +190,12 @@ input::-webkit-inner-spin-button {
     justify-content: center;
     align-items: center;
     align-content: center;
+    pointer-events: none;
+}
+
+.fullcenterflex .card
+{
+    pointer-events: auto;
 }
 
 a.card,
@@ -193,3 +211,23 @@ a.card:hover
 {
     box-shadow: 0 0 16px #AAA;
 }
+
+table.scode_table {
+    max-height: none;
+}
+
+table.scode_table td:nth-child(2) {
+    flex-grow: 3;
+}
+
+table.scode_table th:nth-child(2) {
+    flex-grow: 3;
+}
+
+#mainpnl h2 {
+    margin-top: 1.75rem;
+}
+
+.linkcaption:hover {
+    text-decoration: none;
+}

web/index.php

@@ -9,6 +9,8 @@
 	<!--<link rel="stylesheet" href="/css/mini-dark.min.css">-->
 	<link rel="stylesheet" href="/css/style.css">
 	<meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="icon" type="image/png" href="/favicon.png"/>
+    <link rel="icon" type="image/png" href="/favicon.ico"/>
 </head>
 <body>
 	<form id="mainpnl">
@@ -16,7 +18,7 @@
 		<a href="https://play.google.com/store/apps/details?id=com.blackforestbytes.simplecloudnotifier" class="button bordered" id="tl_link"><span class="icn-google-play"></span></a>
 		<a href="/index_api.php" class="button bordered" id="tr_link">API</a>
 
-		<h1>Simple Cloud Notifier</h1>
+        <a href="/" class="linkcaption"><h1>Simple Cloud Notifier</h1></a>
 
 		<div class="row responsive-label">
 			<div class="col-sm-12 col-md-3"><label for="uid" class="doc">UserID</label></div>
@@ -46,7 +48,7 @@
 
 		<div class="row responsive-label">
 			<div class="col-sm-12 col-md-3"><label for="txt" class="doc">Message Content</label></div>
-			<div class="col-sm-12 col-md"><textarea id="txt" class="doc" <?php echo (isset($_GET['preset_content']) ? (' value="'.$_GET['preset_content'].'" '):(''));?> rows="5"></textarea></div>
+			<div class="col-sm-12 col-md"><textarea id="txt" class="doc" <?php echo (isset($_GET['preset_content']) ? (' value="'.$_GET['preset_content'].'" '):(''));?> rows="8"></textarea></div>
 		</div>
 
 		<div class="row">

web/index_api.php

@@ -2,35 +2,41 @@
 <html lang="en">
 <head>
 	<meta charset="utf-8">
-	<link rel="stylesheet" href="/css/mini-default.min.css">
+	<link rel="stylesheet" href="/css/mini-default.min.css"> <!-- https://minicss.org/docs -->
     <title>Simple Cloud Notifications - API</title>
     <!--<link rel="stylesheet" href="/css/mini-nord.min.css">-->
     <!--<link rel="stylesheet" href="/css/mini-dark.min.css">-->
 	<link rel="stylesheet" href="/css/style.css">
 	<meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="icon" type="image/png" href="/favicon.png"/>
+    <link rel="icon" type="image/png" href="/favicon.ico"/>
 </head>
 <body>
-	<form id="mainpnl">
+	<div id="mainpnl">
         <a href="https://play.google.com/store/apps/details?id=com.blackforestbytes.simplecloudnotifier" class="button bordered" id="tl_link"><span class="icn-google-play"></span></a>
         <a href="/index.php" class="button bordered" id="tr_link">Send</a>
 
-		<h1>Simple Cloud Notifier</h1>
+        <a href="/" class="linkcaption"><h1>Simple Cloud Notifier</h1></a>
 
         <p>Get your user-id and user-key from the app and send notifications to your phone by performing a POST request against <code>https://simplecloudnotifier.blackforestbytes.com/send.php</code></p>
         <pre>curl                                          \
     --data "user_id={userid}"                 \
     --data "user_key={userkey}"               \
-    --data "priority={0|1|2}"                 \
     --data "title={message_title}"            \
-    --data "content={message_content}"        \
+    --data "content={message_body}"           \
+    --data "priority={0|1|2}"                 \
+    --data "msg_id={unique_message_id}"       \
     https://scn.blackforestbytes.com/send.php</pre>
-    <p>The <code>content</code> and <code>priority</code> parameters are optional, you can also send message with only a title and the default priority</p>
+    <p>The <code>content</code>, <code>priority</code> and <code>msg_id</code> parameters are optional, you can also send message with only a title and the default priority</p>
         <pre>curl                                          \
     --data "user_id={userid}"                 \
     --data "user_key={userkey}"               \
     --data "title={message_title}"            \
     https://scn.blackforestbytes.com/send.php</pre>
-    </form>
+
+        <a href="/index_more.php" class="button bordered tertiary" style="float: right; min-width: 100px; text-align: center">More</a>
+
+    </div>
 
 	<div id="copyinfo">
 		<a href="https://www.blackforestbytes.com">&#169; blackforestbytes</a>

web/index_more.php

@@ -0,0 +1,192 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<meta charset="utf-8">
+	<link rel="stylesheet" href="/css/mini-default.min.css"> <!-- https://minicss.org/docs -->
+    <title>Simple Cloud Notifications - API</title>
+    <!--<link rel="stylesheet" href="/css/mini-nord.min.css">-->
+    <!--<link rel="stylesheet" href="/css/mini-dark.min.css">-->
+	<link rel="stylesheet" href="/css/style.css">
+	<meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="icon" type="image/png" href="/favicon.png"/>
+    <link rel="icon" type="image/png" href="/favicon.ico"/>
+</head>
+<body>
+	<div id="mainpnl">
+        <a href="https://play.google.com/store/apps/details?id=com.blackforestbytes.simplecloudnotifier" class="button bordered" id="tl_link"><span class="icn-google-play"></span></a>
+        <a href="/index.php" class="button bordered" id="tr_link">Send</a>
+
+        <a href="/" class="linkcaption"><h1>Simple Cloud Notifier</h1></a>
+
+        <h2>Introduction</h2>
+        <div class="section">
+            <p>
+                With this API you can send push notifications to your phone.
+            </p>
+            <p>
+                To recieve them you will need to install the <a href="https://play.google.com/store/apps/details?id=com.blackforestbytes.simplecloudnotifier">SimpleCloudNotifier</a> app from the play store.
+                When you open the app you can click on the account tab to see you unique <code>user_id</code> and <code>user_key</code>.
+                These two values are used to identify and authenticate your device so that send messages can be routed to your phone.
+            </p>
+            <p>
+                You can at any time generate a new <code>user_key</code> in the app and invalidate the old one.
+            </p>
+            <p>
+                There is also a <a href="/index.php">web interface</a> for this API to manually send notifications to your phone or to test your setup.
+            </p>
+        </div>
+
+        <h2>Quota</h2>
+        <div class="section">
+            <p>
+                By default you can send up to 100 messages per day per device.
+                If you need more you can upgrade your account in the app to get 1000 messages per day, this has the additional benefit of removing ads and supporting the development of the app (and making sure I can pay the server costs).
+            </p>
+        </div>
+
+        <h2>API Requests</h2>
+        <div class="section">
+            <p>
+                To send a new notification you send a <code>POST</code> request to the URL <code>https://scn.blackforestbytes.com/send.php</code>.
+                All Parameters can either directly be submitted as URL parameters or they can be put into the POST body.
+            </p>
+            <p>
+                You <i>need</i> to supply a valid <code>user_id</code> - <code>user_key</code> pair and a <code>title</code> for your message, all other parameter are optional.
+            </p>
+        </div>
+
+        <h2>API Response</h2>
+        <div class="section">
+            <p>
+                If the operation was successful the API will respond with an HTTP statuscode 200 and an JSON payload indicating the send message and your remaining quota
+            </p>
+            <pre class="red-code">{
+    "success":true,
+    "message":"Message sent",
+    "response":
+    {
+        "multicast_id":8000000000000000006,
+        "success":1,
+        "failure":0,
+        "canonical_ids":0,
+        "results": [{"message_id":"0:10000000000000000000000000000000d"}]
+    },
+    "messagecount":623,
+    "quota":17,
+    "quota_max":100
+}</pre>
+            <p>
+                If the operation is <b>not</b> successful the API will respond with an 4xx HTTP statuscode.
+            </p>
+            <table class="scode_table">
+                <thead>
+                <tr>
+                    <th>Statuscode</th>
+                    <th>Explanation</th>
+                </tr>
+                </thead>
+                <tbody>
+                <tr>
+                    <td data-label="Statuscode">200 (OK)</td>
+                    <td data-label="Explanation">Message sent</td>
+                </tr>
+                <tr>
+                    <td data-label="Statuscode">400 (Bad Request)</td>
+                    <td data-label="Explanation">The request is invalid (missing parameters or wrong values)</td>
+                </tr>
+                <tr>
+                    <td data-label="Statuscode">401 (Unauthorized)</td>
+                    <td data-label="Explanation">The user_id was not found or the user_key is wrong</td>
+                </tr>
+                <tr>
+                    <td data-label="Statuscode">403 (Forbidden)</td>
+                    <td data-label="Explanation">The user has exceeded its daily quota - wait 24 hours or upgrade your account</td>
+                </tr>
+                <tr>
+                    <td data-label="Statuscode">412 (Precondition Failed)</td>
+                    <td data-label="Explanation">There is no device connected with this account - open the app and press the refresh button in the account tab</td>
+                </tr>
+                <tr>
+                    <td data-label="Statuscode">500 (Internal Server Error)</td>
+                    <td data-label="Explanation">There was an internal error while sending your data - try again later</td>
+                </tr>
+                </tbody>
+            </table>
+            <p>
+                There is also always a JSON payload with additional information.
+                The <code>success</code> field is always there and in the error state you the <code>message</code> field to get a descritpion of the problem.
+            </p>
+            <pre class="red-code">{
+    "success":false,
+    "error":2101,
+    "errhighlight":-1,
+    "message":"Daily quota reached (100)"
+}</pre>
+        </div>
+
+        <h2>Message Content</h2>
+        <div class="section">
+            <p>
+                Every message must have a title set.
+                But you also (optionally) add more content, while the title has a max length of 120 characters, the conntent can be up to 10.000 characters.
+                You can see the whole message with title and content in the app or when clicking on the notification.
+            </p>
+            <p>
+               If needed the content can be supplied in the <code>content</code> parameter.
+            </p>
+            <pre>curl                                          \
+    --data "user_id={userid}"                 \
+    --data "user_key={userkey}"               \
+    --data "title={message_title}"            \
+    --data "content={message_content}"        \
+    https://scn.blackforestbytes.com/send.php</pre>
+        </div>
+
+        <h2>Message Priority</h2>
+        <div class="section">
+            <p>
+                Currently you can send a message with three different priorities: 0 (low), 1 (normal) and 2 (high).
+                In the app you can then configure a different behaviour for different priorities, e.g. only playing a sound if the notification is high priority.
+            </p>
+            <p>
+                Priorites are either 0, 1 or 2 and are supplied in the <code>priority</code> parameter.
+                If no priority is supplied the message will get the default priority of 1.
+            </p>
+            <pre>curl                                          \
+    --data "user_id={userid}"                 \
+    --data "user_key={userkey}"               \
+    --data "title={message_title}"            \
+    --data "priority={0|1|2}"                 \
+    https://scn.blackforestbytes.com/send.php</pre>
+        </div>
+
+        <h2>Message Uniqueness</h2>
+        <div class="section">
+            <p>
+                Sometimes your script can run in an environment with an unstable connection and you want to implement an automatic re-try mechanism to send a message again if the last try failed due to bad connectivity.
+            </p>
+            <p>
+                To ensure that a message is only send once you can generate a unique id for your message (I would recommend a simple <code>uuidgen</code>).
+                If you send a message with an UUID that was already used in the near past the API still returns OK, but no new message is sent.
+            </p>
+            <p>
+                The message_id is optional - but if you want to use it you need to supply it via the <code>msg_id</code> parameter.
+            </p>
+            <pre>curl                                          \
+    --data "user_id={userid}"                 \
+    --data "user_key={userkey}"               \
+    --data "title={message_title}"            \
+    --data "msg_id={message_id}"              \
+    https://scn.blackforestbytes.com/send.php</pre>
+            <p>
+                Be aware that the server only saves send messages for a short amount of time. Because of that you can only use this to prevent duplicates in a short time-frame, older messages with the same ID are probably already deleted and the message will be send again.
+            </p>
+        </div>
+
+    </div>
+
+	<div id="copyinfo">
+		<a href="https://www.blackforestbytes.com">&#169; blackforestbytes</a>
+	</div>
+</body>
+</html>

web/index_sent.php

@@ -3,16 +3,18 @@
 <head>
 	<meta charset="utf-8">
     <title>Simple Cloud Notifications</title>
-	<link rel="stylesheet" href="/css/mini-default.min.css">
+	<link rel="stylesheet" href="/css/mini-default.min.css">  <!-- https://minicss.org/docs -->
 	<!--<link rel="stylesheet" href="/css/mini-nord.min.css">-->
 	<!--<link rel="stylesheet" href="/css/mini-dark.min.css">-->
 	<link rel="stylesheet" href="/css/style.css">
 	<meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="icon" type="image/png" href="/favicon.png"/>
+    <link rel="icon" type="image/png" href="/favicon.ico"/>
 </head>
 <body>
 
 
-	<form id="mainpnl">
+	<div id="mainpnl">
 
         <div class="fullcenterflex">
 
@@ -42,9 +44,9 @@
         <a href="https://play.google.com/store/apps/details?id=com.blackforestbytes.simplecloudnotifier" class="button bordered" id="tl_link"><span class="icn-google-play"></span></a>
         <a href="/index.php" class="button bordered" id="tr_link">Send</a>
 
-        <h1>Simple Cloud Notifier</h1>
+        <a href="/" class="linkcaption"><h1>Simple Cloud Notifier</h1></a>
 
-    </form>
+    </div>
 
 	<div id="copyinfo">
 		<a href="https://www.blackforestbytes.com">&#169; blackforestbytes</a>

web/info.php

@@ -15,7 +15,7 @@ $user_key  = $INPUT['user_key'];
 
 $pdo = getDatabase();
 
-$stmt = $pdo->prepare('SELECT user_id, user_key, quota_today, quota_max, quota_day FROM users WHERE user_id = :uid LIMIT 1');
+$stmt = $pdo->prepare('SELECT user_id, user_key, quota_today, is_pro, quota_day, fcm_token FROM users WHERE user_id = :uid LIMIT 1');
 $stmt->execute(['uid' => $user_id]);
 
 $datas = $stmt->fetchAll(PDO::FETCH_ASSOC);
@@ -27,7 +27,7 @@ if ($data['user_id'] !== (int)$user_id) die(json_encode(['success' => false, 'er
 if ($data['user_key'] !== $user_key) die(json_encode(['success' => false, 'errid'=>204, 'message' => 'Authentification failed']));
 
 $quota = $data['quota_today'];
-$quota_max = $data['quota_max'];
+$is_pro = $data['is_pro'];
 
 if ($data['quota_day'] === null || $data['quota_day'] !== date("Y-m-d")) $quota=0;
 
@@ -36,7 +36,9 @@ echo json_encode(
 	'success'        => true,
 	'user_id'        => $user_id,
 	'quota'          => $quota,
-	'quota_max'=> $quota_max,
+	'quota_max'      => Statics::quota_max($is_pro),
+	'is_pro'         => $is_pro,
+	'fcm_token_set'  => ($data['fcm_token'] != null),
 	'message'        => 'ok'
 ]);
 return 0;

web/model.php

@@ -6,6 +6,8 @@ class Statics
 {
 	public static $DB = NULL;
 	public static $CFG = NULL;
+
+	public static function quota_max($is_pro) { return $is_pro ? 1000 : 100; }
 }
 
 function getConfig()
@@ -15,6 +17,50 @@ function getConfig()
 	return Statics::$CFG = require "config.php";
 }
 
+/**
+ * @param String $msg
+ * @param Exception $e
+ */
+function reportError($msg, $e = null)
+{
+	if ($e != null) $msg = ($msg."\n\n[[EXCEPTION]]\n" . $e . "\n" . $e->getMessage() . "\n" . $e->getTraceAsString());
+
+	$subject = "SCN_Server has encountered an Error at " . date("Y-m-d H:i:s") . "] ";
+
+	$content = "";
+
+	$content .= 'HTTP_HOST: '            . ParamServerOrUndef('HTTP_HOST')            . "\n";
+	$content .= 'REQUEST_URI: '          . ParamServerOrUndef('REQUEST_URI')          . "\n";
+	$content .= 'TIME: '                 . date('Y-m-d H:i:s')                        . "\n";
+	$content .= 'REMOTE_ADDR: '          . ParamServerOrUndef('REMOTE_ADDR')          . "\n";
+	$content .= 'HTTP_X_FORWARDED_FOR: ' . ParamServerOrUndef('HTTP_X_FORWARDED_FOR') . "\n";
+	$content .= 'HTTP_USER_AGENT: '      . ParamServerOrUndef('HTTP_USER_AGENT')      . "\n";
+	$content .= 'MESSAGE:'               . "\n" . $msg                                . "\n";
+	$content .= '$_GET:'                 . "\n" . print_r($_GET, true)                . "\n";
+	$content .= '$_POST:'                . "\n" . print_r($_POST, true)               . "\n";
+	$content .= '$_FILES:'               . "\n" . print_r($_FILES, true)              . "\n";
+
+	if (getConfig()['error_reporting']['send-mail']) sendMail($subject, $content, getConfig()['error_reporting']['email-error-target'], getConfig()['error_reporting']['email-error-sender']);
+}
+
+/**
+ * @param string $subject
+ * @param string $content
+ * @param string $to
+ * @param string $from
+ */
+function sendMail($subject, $content, $to, $from) {
+	mail($to, $subject, $content, 'From: ' . $from);
+}
+
+/**
+ * @param string $idx
+ * @return string
+ */
+function ParamServerOrUndef($idx) {
+	return isset($_SERVER[$idx]) ? $_SERVER[$idx] : 'NOT_SET';
+}
+
 function getDatabase()
 {
 	if (Statics::$DB !== NULL) return Statics::$DB;
@@ -57,6 +103,14 @@ function generateRandomAuthKey()
 	return $random;
 }
 
+/**
+ * @param $url
+ * @param $body
+ * @param $header
+ * @return array|object|string
+ * @throws \Httpful\Exception\ConnectionErrorException
+ * @throws Exception
+ */
 function sendPOST($url, $body, $header)
 {
 	$builder = \Httpful\Request::post($url);
@@ -69,5 +123,107 @@ function sendPOST($url, $body, $header)
 
 	if ($response->code != 200) throw new Exception("Repsponse code: " . $response->code);
 
-	return $response->body;
+	return $response->raw_body;
 }
+
+function verifyOrderToken($tok)
+{
+	// https://developers.google.com/android-publisher/api-ref/purchases/products/get
+
+	try
+	{
+		$package  = getConfig()['verify_api']['package_name'];
+		$product  = getConfig()['verify_api']['product_id'];
+		$acctoken = getConfig()['verify_api']['accesstoken'];
+
+		if ($acctoken == '' || $acctoken == null || $acctoken == false) $acctoken = refreshVerifyToken();
+
+		$url = 	'https://www.googleapis.com/androidpublisher/v3/applications/'.$package.'/purchases/products/'.$product.'/tokens/'.$tok.'?access_token='.$acctoken;
+		$response = $builder = \Httpful\Request::get($url)->send();
+		$obj = json_decode($response->raw_body, true);
+
+		if ($response->code != 401 && ($obj === null || $obj === false))
+		{
+			reportError('verify-token returned NULL');
+			return false;
+		}
+
+		if ($response->code == 401 || isset($obj['error']) && isset($obj['error']['code']) && $obj['error']['code'] == 401) // "Invalid Credentials" -- refresh acces_token
+		{
+			$acctoken = refreshVerifyToken();
+
+			$url = 	'https://www.googleapis.com/androidpublisher/v3/applications/'.$package.'/purchases/products/'.$product.'/tokens/'.$tok.'?access_token='.$acctoken;
+			$response = $builder = \Httpful\Request::get($url)->send();
+			$obj = json_decode($response->raw_body, true);
+
+			if ($obj === null || $obj === false)
+			{
+				reportError('verify-token returned NULL');
+				return false;
+			}
+		}
+
+		if (isset($obj['purchaseState']) && $obj['purchaseState'] === 0) return true;
+
+		return false;
+	}
+	catch (Exception $e)
+	{
+		reportError("VerifyOrder token threw exception", $e);
+		return false;
+	}
+}
+
+/** @throws Exception */
+function refreshVerifyToken()
+{
+	$url = 	'https://accounts.google.com/o/oauth2/token'.
+			'?grant_type=refresh_token'.
+			'&refresh_token='.getConfig()['verify_api']['refreshtoken'].
+			'&client_id='.getConfig()['verify_api']['clientid'].
+			'&client_secret='.getConfig()['verify_api']['clientsecret'];
+
+	$json = sendPOST($url, "", []);
+	$obj = json_decode($json, true);
+	file_put_contents('.verify_accesstoken', $obj['access_token']);
+
+	return $obj['access_token'];
+}
+
+function api_return($http_code, $message)
+{
+	http_response_code($http_code);
+	echo $message;
+	die();
+}
+
+/**
+ * @param String $str
+ * @param String[] $path
+ * @return mixed|null
+ */
+function try_json($str, $path)
+{
+	try
+	{
+		$o = json_decode($str, true);
+		foreach ($path as $p) $o = $o[$p];
+		return $o;
+	}
+	catch (Exception $e)
+	{
+		return null;
+	}
+}
+
+//#################################################################################################################
+
+if (getConfig()['global']['prod']) {
+	ini_set('display_errors', 0);
+	ini_set('log_errors', 1);
+} else {
+	error_reporting(E_STRICT);
+	ini_set('display_errors', 1);
+}
+
+//#################################################################################################################

web/register.php

@@ -5,23 +5,47 @@ include_once 'model.php';
 $INPUT = array_merge($_GET, $_POST);
 
 if (!isset($INPUT['fcm_token'])) die(json_encode(['success' => false, 'message' => 'Missing parameter [[fcm_token]]']));
+if (!isset($INPUT['pro']))       die(json_encode(['success' => false, 'message' => 'Missing parameter [[pro]]']));
+if (!isset($INPUT['pro_token'])) die(json_encode(['success' => false, 'message' => 'Missing parameter [[pro_token]]']));
 
 $fcmtoken  = $INPUT['fcm_token'];
+$ispro     = $INPUT['pro'] == 'true';
+$pro_token = $INPUT['pro_token'];
 $user_key = generateRandomAuthKey();
 
 $pdo = getDatabase();
 
-$stmt = $pdo->prepare('INSERT INTO users (user_key, fcm_token, timestamp_accessed) VALUES (:key, :token, NOW())');
-$stmt->execute(['key' => $user_key, 'token' => $fcmtoken]);
+$pdo->beginTransaction();
+
+if ($ispro)
+{
+	if (!verifyOrderToken($pro_token))
+	{
+		$pdo->rollBack();
+		die(json_encode(['success' => false, 'message' => 'Purchase token could not be verified']));
+	}
+
+	$stmt = $pdo->prepare('UPDATE users SET is_pro=0, pro_token=NULL WHERE user_id <> :uid AND pro_token = :ptk');
+	$stmt->execute(['uid' => $user_id, 'ptk' => $pro_token]);
+}
+
+$stmt = $pdo->prepare('INSERT INTO users (user_key, fcm_token, is_pro, pro_token, timestamp_accessed) VALUES (:key, :token, :bpro, :spro, NOW())');
+$stmt->execute(['key' => $user_key, 'token' => $fcmtoken, 'bpro' => $ispro, 'spro' => $ispro ? $pro_token : null]);
 $user_id = $pdo->lastInsertId('user_id');
 
+$stmt = $pdo->prepare('UPDATE users SET fcm_token=NULL WHERE user_id <> :uid AND fcm_token=:ft');
+$stmt->execute(['uid' => $user_id, 'ft' => $fcm_token]);
+
+$pdo->commit();
+
 echo json_encode(
 [
 	'success'   => true,
 	'user_id'   => $user_id,
 	'user_key'  => $user_key,
 	'quota'     => 0,
-	'quota_max'=> 100,
+	'quota_max' => Statics::quota_max($ispro),
+	'is_pro'    => $ispro,
 	'message'   => 'New user registered'
 ]);
 

web/schema.sql

@@ -1,3 +1,4 @@
+DROP TABLE IF EXISTS `users`;
 CREATE TABLE `users`
 (
 	`user_id`            INT(11)         NOT NULL   AUTO_INCREMENT,
@@ -9,7 +10,28 @@ CREATE TABLE `users`
 
 	`quota_today`        INT(11)         NOT NULL   DEFAULT '0',
 	`quota_day`          DATE                NULL   DEFAULT NULL,
-	`quota_max`          INT(11)      NOT NULL   DEFAULT '100',
+
+	`is_pro`             BIT             NOT NULL   DEFAULT 0,
+	`pro_token`          VARCHAR(256)        NULL   DEFAULT NULL,
 
 	PRIMARY KEY (`user_id`)
 );
+
+DROP TABLE IF EXISTS `messages`;
+CREATE TABLE `messages`
+(
+	`scn_message_id`     INT(11)         NOT NULL   AUTO_INCREMENT,
+	`sender_user_id`     INT(11)         NOT NULL,
+
+	`timestamp`          DATETIME        NOT NULL   DEFAULT CURRENT_TIMESTAMP,
+	`ack`                BIT             NOT NULL   DEFAULT 0,
+
+	`title`              VARCHAR(256)    NOT NULL,
+	`content`            VARCHAR(12288)      NULL,
+	`priority`           INT(11)         NOT NULL,
+
+	`fcm_message_id`     VARCHAR(256)        NULL,
+	`usr_message_id`     VARCHAR(256)        NULL,
+
+	PRIMARY KEY (`scn_message_id`)
+);

web/send.php

@@ -2,58 +2,108 @@
 
 include_once 'model.php';
 
+try
+{
+
 //------------------------------------------------------------------
-sleep(1);
+//sleep(1);
 //------------------------------------------------------------------
 
-$INPUT = array_merge($_GET, $_POST);
+	$INPUT = array_merge($_GET, $_POST);
 
-if (!isset($INPUT['user_id']))  die(json_encode(['success' => false, 'errhighlight' => 101, 'message' => 'Missing parameter [[user_id]]']));
-if (!isset($INPUT['user_key'])) die(json_encode(['success' => false, 'errhighlight' => 102, 'message' => 'Missing parameter [[user_token]]']));
-if (!isset($INPUT['title']))    die(json_encode(['success' => false, 'errhighlight' => 103, 'message' => 'Missing parameter [[title]]']));
+	if (!isset($INPUT['user_id']))  api_return(400, json_encode(['success' => false, 'error' => 1101, 'errhighlight' => 101, 'message' => 'Missing parameter [[user_id]]']));
+	if (!isset($INPUT['user_key'])) api_return(400, json_encode(['success' => false, 'error' => 1102, 'errhighlight' => 102, 'message' => 'Missing parameter [[user_token]]']));
+	if (!isset($INPUT['title']))    api_return(400, json_encode(['success' => false, 'error' => 1103, 'errhighlight' => 103, 'message' => 'Missing parameter [[title]]']));
 
 //------------------------------------------------------------------
 
-$user_id  = $INPUT['user_id'];
-$user_key = $INPUT['user_key'];
-$message  = $INPUT['title'];
-$content  = isset($INPUT['content'])  ? $INPUT['content']  : '';
-$priority = isset($INPUT['priority']) ? $INPUT['priority'] : '1';
+
+	$user_id  = $INPUT['user_id'];
+	$user_key = $INPUT['user_key'];
+	$message  = $INPUT['title'];
+	$content  = isset($INPUT['content'])  ? $INPUT['content']  : '';
+	$priority = isset($INPUT['priority']) ? $INPUT['priority'] : '1';
+	$usrmsgid = isset($INPUT['msg_id'])   ? $INPUT['msg_id'] : null;
 
 //------------------------------------------------------------------
 
-if ($priority !== '0' && $priority !== '1' && $priority !== '2') die(json_encode(['success' => false, 'errhighlight' => 105, 'message' => 'Invalid priority']));
+	if ($priority !== '0' && $priority !== '1' && $priority !== '2') api_return(400, json_encode(['success' => false, 'error' => 1104, 'errhighlight' => 105, 'message' => 'Invalid priority']));
 
-if (strlen(trim($message)) == 0) die(json_encode(['success' => false, 'errhighlight' => 103, 'message' => 'No title specified']));
-if (strlen($message) > 120)      die(json_encode(['success' => false, 'errhighlight' => 103, 'message' => 'Title too long (120 characters)']));
-if (strlen($content) > 10000)    die(json_encode(['success' => false, 'errhighlight' => 104, 'message' => 'Content too long (10000 characters)']));
+	if (strlen(trim($message)) == 0)                 api_return(400, json_encode(['success' => false, 'error' => 1201, 'errhighlight' => 103, 'message' => 'No title specified']));
+	if (strlen($message) > 120)                      api_return(400, json_encode(['success' => false, 'error' => 1202, 'errhighlight' => 103, 'message' => 'Title too long (120 characters)']));
+	if (strlen($content) > 10000)                    api_return(400, json_encode(['success' => false, 'error' => 1203, 'errhighlight' => 104, 'message' => 'Content too long (10000 characters)']));
+	if ($usrmsgid != null && strlen($usrmsgid) > 64) api_return(400, json_encode(['success' => false, 'error' => 1204, 'errhighlight' => -1,  'message' => 'MessageID too long (64 characters)']));
 
 //------------------------------------------------------------------
 
-$pdo = getDatabase();
+	$pdo = getDatabase();
 
-$stmt = $pdo->prepare('SELECT user_id, user_key, fcm_token, messages_sent, quota_today, quota_max, quota_day FROM users WHERE user_id = :uid LIMIT 1');
-$stmt->execute(['uid' => $user_id]);
+	$stmt = $pdo->prepare('SELECT user_id, user_key, fcm_token, messages_sent, quota_today, is_pro, quota_day FROM users WHERE user_id = :uid LIMIT 1');
+	$stmt->execute(['uid' => $user_id]);
 
-$datas = $stmt->fetchAll(PDO::FETCH_ASSOC);
-if (count($datas)<=0) die(json_encode(['success' => false, 'errhighlight' => 101, 'message' => 'User not found']));
-$data = $datas[0];
+	$datas = $stmt->fetchAll(PDO::FETCH_ASSOC);
+	if (count($datas)<=0) die(json_encode(['success' => false, 'error' => 1301, 'errhighlight' => 101, 'message' => 'User not found']));
+	$data = $datas[0];
 
-if ($data === null) die(json_encode(['success' => false, 'errhighlight' => 101, 'message' => 'User not found']));
-if ($data['user_id'] !== (int)$user_id) die(json_encode(['success' => false, 'errhighlight' => 101, 'message' => 'UserID not found']));
-if ($data['user_key'] !== $user_key) die(json_encode(['success' => false, 'errhighlight' => 102, 'message' => 'Authentification failed']));
+	if ($data === null)                     api_return(401, json_encode(['success' => false, 'error' => 1301, 'errhighlight' => 101, 'message' => 'User not found']));
+	if ($data['user_id'] !== (int)$user_id) api_return(401, json_encode(['success' => false, 'error' => 1302, 'errhighlight' => 101, 'message' => 'UserID not found']));
+	if ($data['user_key'] !== $user_key)    api_return(401, json_encode(['success' => false, 'error' => 1303, 'errhighlight' => 102, 'message' => 'Authentification failed']));
 
-$fcm = $data['fcm_token'];
+	$fcm = $data['fcm_token'];
 
-$new_quota = $data['quota_today'] + 1;
-if ($data['quota_day'] === null || $data['quota_day'] !== date("Y-m-d")) $new_quota=1;
-if ($new_quota > $data['quota_max']) die(json_encode(['success' => false, 'errhighlight' => -1, 'message' => 'Daily quota reached ('.$data['quota_max'].')']));
+	$new_quota = $data['quota_today'] + 1;
+	if ($data['quota_day'] === null || $data['quota_day'] !== date("Y-m-d")) $new_quota=1;
+	if ($new_quota > Statics::quota_max($data['is_pro'])) api_return(403, json_encode(['success' => false, 'error' => 2101, 'errhighlight' => -1, 'message' => 'Daily quota reached ('.Statics::quota_max($data['is_pro']).')']));
+
+	if ($fcm == null || $fcm == '' ||  $fcm == false)
+	{
+		api_return(412, json_encode(['success' => false, 'error' => 1401, 'errhighlight' => -1, 'message' => 'No device linked with this account']));
+	}
 
 //------------------------------------------------------------------
 
-$url = "https://fcm.googleapis.com/fcm/send";
-$payload = json_encode(
-[
+	if ($usrmsgid != null)
+	{
+		$stmt = $pdo->prepare('SELECT scn_message_id FROM messages WHERE sender_user_id=:uid AND usr_message_id IS NOT NULL AND usr_message_id=:umid LIMIT 1');
+		$stmt->execute(['uid' => $user_id, 'umid' => $usrmsgid]);
+
+		if (count($stmt->fetchAll(PDO::FETCH_ASSOC))>0)
+		{
+			api_return(200, json_encode(
+			[
+				'success'       => true,
+				'message'       => 'Message already sent',
+				'suppress_send' => true,
+				'response'      => '',
+				'messagecount'  => $data['messages_sent']+1,
+				'quota'         => $data['quota_today'],
+				'is_pro'        => $data['is_pro'],
+				'quota_max'     => Statics::quota_max($data['is_pro']),
+			]));
+		}
+	}
+
+//------------------------------------------------------------------
+
+	$pdo->beginTransaction();
+
+
+	$stmt = $pdo->prepare('INSERT INTO messages (sender_user_id, title, content, priority, fcm_message_id, usr_message_id) VALUES (:suid, :t, :c, :p, :fmid, :umid)');
+	$stmt->execute(
+	[
+		'suid' => $user_id,
+		't'    => $message,
+		'c'    => $content,
+		'p'    => $priority,
+		'fmid' => null,
+		'umid' => $usrmsgid,
+	]);
+
+	$scn_msg_id = $pdo->lastInsertId();
+
+	$url = "https://fcm.googleapis.com/fcm/send";
+	$payload = json_encode(
+	[
 		'to' => $fcm,
 		//'dry_run' => true,
 		'android' => [ 'priority' => 'high' ],
@@ -68,33 +118,58 @@ $payload = json_encode(
 				'body'       => $content,
 				'priority'   => $priority,
 				'timestamp'  => time(),
+				'usr_msg_id' => $usrmsgid,
+				'scn_msg_id' => $scn_msg_id,
 			]
-]);
-$header=
-[
+	]);
+	$header=
+	[
 		'Authorization' => 'key=' . getConfig()['firebase']['server_key'],
 		'Content-Type' => 'application/json',
-];
+	];
 
-try
-{
+	try
+	{
 		$httpresult = sendPOST($url, $payload, $header);
-}
-catch (Exception $e)
-{
-	die(json_encode(['success' => false, 'message' => 'Exception: ' . $e->getMessage()]));
-}
 
-$stmt = $pdo->prepare('UPDATE users SET timestamp_accessed=NOW(), messages_sent=messages_sent+1, quota_today=:q, quota_day=NOW() WHERE user_id = :uid');
-$stmt->execute(['uid' => $user_id, 'q' => $new_quota]);
+		if (try_json($httpresult, ['success']) != 1)
+		{
+			reportError("FCM communication failed (success_1 <> true)\n\n".$httpresult);
+			$pdo->rollBack();
+			api_return(500, json_encode(['success' => false, 'error' => 9902, 'errhighlight' => -1, 'message' => 'Communication with firebase service failed.']));
+		}
+	}
+	catch (Exception $e)
+	{
+		reportError("FCM communication failed", $e);
+		$pdo->rollBack();
+		api_return(500, json_encode(['success' => false, 'error' => 9901, 'errhighlight' => -1, 'message' => 'Communication with firebase service failed.'."\n\n".'Exception: ' . $e->getMessage()]));
+	}
 
-echo (json_encode(
-[
+	$stmt = $pdo->prepare('UPDATE users SET timestamp_accessed=NOW(), messages_sent=messages_sent+1, quota_today=:q, quota_day=NOW() WHERE user_id = :uid');
+	$stmt->execute(['uid' => $user_id, 'q' => $new_quota]);
+
+	$stmt = $pdo->prepare('UPDATE messages SET fcm_message_id=:fmid WHERE scn_message_id=:smid');
+	$stmt->execute([ 'fmid' => try_json($httpresult, ['results', 0, 'message_id']), 'smid' => $scn_msg_id ]);
+
+	$pdo->commit();
+
+	api_return(200, json_encode(
+	[
 		'success'       => true,
 		'message'       => 'Message sent',
+		'suppress_send' => false,
 		'response'      => $httpresult,
 		'messagecount'  => $data['messages_sent']+1,
-	'quota'=>$new_quota,
-	'quota_max'=>$data['quota_max'],
-]));
-return 0;
+		'quota'         => $new_quota,
+		'is_pro'        => $data['is_pro'],
+		'quota_max'     => Statics::quota_max($data['is_pro']),
+		'scn_msg_id'    => $scn_msg_id,
+	]));
+}
+catch (Exception $mex)
+{
+	reportError("Root try-catch triggered", $mex);
+	if ($pdo->inTransaction()) $pdo->rollBack();
+	api_return(500, json_encode(['success' => false, 'error' => 9903, 'errhighlight' => -1, 'message' => 'PHP script threw exception.'."\n\n".'Exception: ' . $e->getMessage()]));
+}

web/update.php

@@ -16,7 +16,7 @@ $fcm_token = isset($INPUT['fcm_token']) ? $INPUT['fcm_token'] : null;
 
 $pdo = getDatabase();
 
-$stmt = $pdo->prepare('SELECT user_id, user_key, quota_today, quota_max, quota_day FROM users WHERE user_id = :uid LIMIT 1');
+$stmt = $pdo->prepare('SELECT user_id, user_key, quota_today, quota_day, is_pro FROM users WHERE user_id = :uid LIMIT 1');
 $stmt->execute(['uid' => $user_id]);
 
 $datas = $stmt->fetchAll(PDO::FETCH_ASSOC);
@@ -28,12 +28,14 @@ if ($data['user_id'] !== (int)$user_id) die(json_encode(['success' => false, 'me
 if ($data['user_key'] !== $user_key) die(json_encode(['success' => false, 'message' => 'Authentification failed']));
 
 $quota = $data['quota_today'];
-$quota_max = $data['quota_max'];
+$is_pro = $data['is_pro'];
 
 $new_userkey = generateRandomAuthKey();
 
 if ($fcm_token === null)
 {
+	// only gen new user_secret
+
 	$stmt = $pdo->prepare('UPDATE users SET timestamp_accessed=NOW(), user_key=:at WHERE user_id = :uid');
 	$stmt->execute(['uid' => $user_id, 'at' => $new_userkey]);
 
@@ -43,23 +45,30 @@ if ($fcm_token === null)
 		'user_id'  => $user_id,
 		'user_key' => $new_userkey,
 		'quota'    => $quota,
-		'quota_max'=> $quota_max,
+		'quota_max'=> Statics::quota_max($data['is_pro']),
+		'is_pro'   => $is_pro,
 		'message'  => 'user updated'
 	]);
 	return 0;
 }
 else
 {
+	// update fcm and gen new user_secret
+
 	$stmt = $pdo->prepare('UPDATE users SET timestamp_accessed=NOW(), fcm_token=:ft, user_key=:at WHERE user_id = :uid');
 	$stmt->execute(['uid' => $user_id, 'ft' => $fcm_token, 'at' => $new_userkey]);
 
+	$stmt = $pdo->prepare('UPDATE users SET fcm_token=NULL WHERE user_id <> :uid AND fcm_token=:ft');
+	$stmt->execute(['uid' => $user_id, 'ft' => $fcm_token]);
+
 	echo json_encode(
 	[
 		'success' => true,
 		'user_id' => $user_id,
 		'user_key' => $new_userkey,
 		'quota'    => $quota,
-		'quota_max'=> $quota_max,
+		'quota_max'=> Statics::quota_max($data['is_pro']),
+		'is_pro'   => $is_pro,
 		'message' => 'user updated'
 	]);
 	return 0;

web/upgrade.php

@@ -0,0 +1,76 @@
+<?php
+
+include_once 'model.php';
+
+$INPUT = array_merge($_GET, $_POST);
+
+
+if (!isset($INPUT['user_id']))   die(json_encode(['success' => false, 'message' => 'Missing parameter [[user_id]]']));
+if (!isset($INPUT['user_key']))  die(json_encode(['success' => false, 'message' => 'Missing parameter [[user_key]]']));
+if (!isset($INPUT['pro']))       die(json_encode(['success' => false, 'message' => 'Missing parameter [[pro]]']));
+if (!isset($INPUT['pro_token'])) die(json_encode(['success' => false, 'message' => 'Missing parameter [[pro_token]]']));
+
+$user_id   = $INPUT['user_id'];
+$user_key  = $INPUT['user_key'];
+$ispro     = $INPUT['pro'] == 'true';
+$pro_token = $INPUT['pro_token'];
+
+//----------------------
+
+$pdo = getDatabase();
+
+$stmt = $pdo->prepare('SELECT user_id, user_key, quota_today, quota_day, is_pro, pro_token FROM users WHERE user_id = :uid LIMIT 1');
+$stmt->execute(['uid' => $user_id]);
+
+$datas = $stmt->fetchAll(PDO::FETCH_ASSOC);
+if (count($datas)<=0) die(json_encode(['success' => false, 'message' => 'User not found']));
+$data = $datas[0];
+
+if ($data === null) die(json_encode(['success' => false, 'message' => 'User not found']));
+if ($data['user_id'] !== (int)$user_id) die(json_encode(['success' => false, 'message' => 'UserID not found']));
+if ($data['user_key'] !== $user_key) die(json_encode(['success' => false, 'message' => 'Authentification failed']));
+
+if ($ispro)
+{
+	// set pro=true
+
+	if ($data['pro_token'] != $pro_token)
+	{
+		if (!verifyOrderToken($pro_token)) die(json_encode(['success' => false, 'message' => 'Purchase token could not be verified']));
+	}
+
+	$stmt = $pdo->prepare('UPDATE users SET timestamp_accessed=NOW(), is_pro=1, pro_token=:ptk WHERE user_id = :uid');
+	$stmt->execute(['uid' => $user_id, 'ptk' => $pro_token]);
+
+	$stmt = $pdo->prepare('UPDATE users SET is_pro=0, pro_token=NULL WHERE user_id <> :uid AND pro_token = :ptk');
+	$stmt->execute(['uid' => $user_id, 'ptk' => $pro_token]);
+
+	echo json_encode(
+	[
+		'success'  => true,
+		'user_id'  => $user_id,
+		'quota'    => $data['quota_today'],
+		'quota_max'=> Statics::quota_max(true),
+		'is_pro'   => true,
+		'message'  => 'user updated'
+	]);
+	return 0;
+}
+else
+{
+	// set pro=false
+
+	$stmt = $pdo->prepare('UPDATE users SET timestamp_accessed=NOW(), is_pro=0, pro_token=NULL WHERE user_id = :uid');
+	$stmt->execute(['uid' => $user_id]);
+
+	echo json_encode(
+	[
+		'success'  => true,
+		'user_id'  => $user_id,
+		'quota'    => $data['quota_today'],
+		'quota_max'=> Statics::quota_max(false),
+		'is_pro'   => false,
+		'message'  => 'user updated'
+	]);
+	return 0;
+}