add sqlite dep

flutter/lib/state/application_log.dart

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+

flutter/lib/state/database.dart

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+import 'package:path_provider/path_provider.dart';
+import 'package:sqflite_common_ffi/sqflite_ffi.dart';
+import 'dart:io';
+import 'package:path/path.dart' as path;
+
+class SCNDatabase {
+  static SCNDatabase? instance = null;
+
+  final Database _db;
+
+  SCNDatabase._(this._db) {}
+
+  static create() async {
+    var docPath = await getApplicationDocumentsDirectory();
+    var dbpath = path.join(docPath.absolute.path, 'scn.db');
+
+    if (Platform.isWindows || Platform.isLinux) {
+      sqfliteFfiInit();
+    }
+
+    var db = await databaseFactoryFfi.openDatabase(dbpath,
+        options: OpenDatabaseOptions(
+          version: 1,
+          onCreate: (db, version) async {
+            initDatabase(db);
+          },
+          onUpgrade: (db, oldVersion, newVersion) async {
+            upgradeDatabase(db, oldVersion, newVersion);
+          },
+        ));
+
+    return instance = SCNDatabase._(db);
+  }
+
+  static void initDatabase(Database db) async {
+    await db.execute('CREATE TABLE requests (id INTEGER PRIMARY KEY, timestamp DATETIME, name TEXT, url TEXT, response_code INTEGER, response TEXT, status TEXT)');
+
+    await db.execute('CREATE TABLE logs (id INTEGER PRIMARY KEY, timestamp DATETIME, level TEXT, text TEXT, additional TEXT)');
+
+    await db.execute('CREATE TABLE messages (message_id INTEGER PRIMARY KEY, receive_timestamp DATETIME, channel_id TEXT, timestamp TEXT, data JSON)');
+  }
+
+  static void upgradeDatabase(Database db, int oldVersion, int newVersion) {
+    // ...
+  }
+}

flutter/lib/state/request_log.dart

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+