Added raw-failure logs to flutter app (to debug init errors)

flutter/lib/state/application_log.dart

@@ -1,6 +1,11 @@
+import 'dart:convert';
+import 'dart:io';
+
 import 'package:hive_flutter/hive_flutter.dart';
+import 'package:simplecloudnotifier/state/globals.dart';
 import 'package:simplecloudnotifier/state/interfaces.dart';
 import 'package:xid/xid.dart';
+import 'package:path/path.dart' as path;
 
 part 'application_log.g.dart';
 
@@ -76,6 +81,61 @@ class ApplicationLog {
       trace: trace?.toString() ?? '',
     ));
   }
+
+  static void writeRawFailure(String message, Map<String, dynamic> extraData) async {
+    try {
+      await Globals().init();
+
+      final fn = path.join(Globals().rawFailureLogsDir.path, 'failure-${DateTime.now().toIso8601String()}.log');
+
+      var txt = "[TEXT]\n${message}\n\n";
+      for (var k in extraData.keys) {
+        txt += "[${k}]\n${_debugToStr(extraData[k])}\n\n";
+      }
+
+      await File(fn).writeAsString(txt);
+
+      ApplicationLog.debug("Wrote raw failure log to '${fn}'  ('${message}')");
+    } catch (e) {
+      print("Failed to <writeRawFailure>: ${e}");
+    }
+  }
+
+  static String _debugToStr(dynamic v) {
+    if (v is String) {
+      return v;
+    }
+    if (v is StackTrace) {
+      return v.toString();
+    }
+
+    try {
+      final enc = new JsonEncoder.withIndent("  ");
+      return enc.convert(v);
+    } catch (e) {
+      // ignore
+    }
+
+    try {
+      return jsonEncode(v);
+    } catch (e) {
+      // ignore
+    }
+
+    try {
+      return v.toString();
+    } catch (e) {
+      // ignore
+    }
+
+    try {
+      return "${v}";
+    } catch (e) {
+      // ignore
+    }
+
+    return "<[!]FAILED_TO_PRINT_OBJECT>";
+  }
 }
 
 @HiveType(typeId: 103)

flutter/lib/state/globals.dart

@@ -2,7 +2,9 @@ import 'dart:io';
 
 import 'package:device_info_plus/device_info_plus.dart';
 import 'package:package_info_plus/package_info_plus.dart';
+import 'package:path_provider/path_provider.dart';
 import 'package:shared_preferences/shared_preferences.dart';
+import 'package:path/path.dart' as path;
 
 class Globals {
   static final Globals _singleton = Globals._internal();
@@ -26,6 +28,9 @@ class Globals {
 
   late SharedPreferences sharedPrefs;
 
+  late Directory appDocumentsDir;
+  late Directory rawFailureLogsDir;
+
   bool get isInitialized => _initialized;
 
   Future<void> init() async {
@@ -61,6 +66,11 @@ class Globals {
 
     this.sharedPrefs = await SharedPreferences.getInstance();
 
+    this.appDocumentsDir = await getApplicationDocumentsDirectory();
+
+    this.rawFailureLogsDir = Directory(path.join(Globals().appDocumentsDir.path, "rawlogs"));
+    await this.rawFailureLogsDir.create(recursive: true);
+
     this._initialized = true;
   }