Migrate legacy storage keys to scoped keys in various store classes (#289)

lib/storage/channel_message_store.dart

@@ -46,24 +46,27 @@ class ChannelMessageStore {
     }
     final prefs = PrefsManager.instance;
     final key = '$keyFor$channelIndex';
+    final oldKey = '$_keyPrefix$channelIndex';
 
-    String? jsonString = prefs.getString(_keyPrefix);
+    String? jsonString = prefs.getString(oldKey);
     if (jsonString == null || jsonString.isEmpty) {
       // Attempt migration from legacy unscoped key on first load
-      final legacyJsonString = prefs.getString(_keyPrefix);
+      final legacyJsonString = prefs.getString(oldKey);
-      prefs.remove(_keyPrefix);
+      prefs.remove(oldKey);
       if (legacyJsonString != null && legacyJsonString.isNotEmpty) {
         appLogger.info(
-          'Migrating channel messages from legacy key $_keyPrefix to scoped key $key',
+          'Migrating channel messages from legacy key $oldKey to scoped key $key',
         );
         await prefs.setString(key, legacyJsonString);
         jsonString = legacyJsonString;
       }
     }
+    if (jsonString == null || jsonString.isEmpty) {
+      jsonString = prefs.getString(keyFor);
+    }
     if (jsonString == null || jsonString.isEmpty) {
       return [];
     }
-
     try {
       final jsonList = jsonDecode(jsonString) as List<dynamic>;
       return jsonList.map((json) => _messageFromJson(json)).toList();

lib/storage/channel_settings_store.dart

@@ -20,7 +20,7 @@ class ChannelSettingsStore {
     final prefs = PrefsManager.instance;
     final key = '$keyFor$channelIndex';
     final oldKey = '$_keyPrefix$channelIndex';
-    bool? enabled = prefs.getBool(key);
+    bool? enabled = prefs.getBool(oldKey);
     if (enabled == null) {
       // Attempt migration from legacy unscoped key on first load
       enabled = prefs.getBool(oldKey);

lib/storage/channel_store.dart

@@ -32,6 +32,10 @@ class ChannelStore {
         jsonString = legacyJsonString;
       }
     }
+
+    if (jsonString == null || jsonString.isEmpty) {
+      jsonString = prefs.getString(keyFor);
+    }
     if (jsonString == null || jsonString.isEmpty) {
       return [];
     }

lib/storage/community_store.dart

@@ -38,6 +38,9 @@ class CommunityStore {
         jsonString = legacyJsonString;
       }
     }
+    if (jsonString == null || jsonString.isEmpty) {
+      jsonString = prefs.getString(keyFor);
+    }
     if (jsonString == null || jsonString.isEmpty) {
       return [];
     }

lib/storage/contact_group_store.dart

@@ -31,6 +31,9 @@ class ContactGroupStore {
         jsonString = legacyJsonString;
       }
     }
+    if (jsonString == null || jsonString.isEmpty) {
+      jsonString = prefs.getString(keyFor);
+    }
     if (jsonString == null || jsonString.isEmpty) {
       return [];
     }

lib/storage/contact_store.dart

@@ -33,6 +33,9 @@ class ContactStore {
         jsonString = legacyJsonString;
       }
     }
+    if (jsonString == null || jsonString.isEmpty) {
+      jsonString = prefs.getString(keyFor);
+    }
     if (jsonString == null || jsonString.isEmpty) {
       return [];
     }

lib/storage/message_store.dart

@@ -49,6 +49,9 @@ class MessageStore {
         jsonString = legacyJsonString;
       }
     }
+    if (jsonString == null || jsonString.isEmpty) {
+      jsonString = prefs.getString(keyFor);
+    }
     if (jsonString == null || jsonString.isEmpty) {
       return [];
     }

lib/storage/unread_store.dart

@@ -45,6 +45,9 @@ class UnreadStore {
         jsonString = legacyJsonString;
       }
     }
+    if (jsonString == null || jsonString.isEmpty) {
+      jsonString = prefs.getString(keyFor);
+    }
     if (jsonString == null || jsonString.isEmpty) {
       return {};
     }