refactor: MVC chat permission settings

lib/views/widgets/list_items/permission_list_tile.dart

@@ -0,0 +1,103 @@
+import 'package:famedlysdk/famedlysdk.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_gen/gen_l10n/l10n.dart';
+
+class PermissionsListTile extends StatelessWidget {
+  final String permissionKey;
+  final int permission;
+  final String category;
+  final void Function() onTap;
+
+  const PermissionsListTile({
+    Key key,
+    @required this.permissionKey,
+    @required this.permission,
+    this.category,
+    this.onTap,
+  }) : super(key: key);
+
+  String getLocalizedPowerLevelString(BuildContext context) {
+    if (category == null) {
+      switch (permissionKey) {
+        case 'users_default':
+          return L10n.of(context).defaultPermissionLevel;
+        case 'events_default':
+          return L10n.of(context).sendMessages;
+        case 'state_default':
+          return L10n.of(context).configureChat;
+        case 'ban':
+          return L10n.of(context).banFromChat;
+        case 'kick':
+          return L10n.of(context).kickFromChat;
+        case 'redact':
+          return L10n.of(context).deleteMessage;
+        case 'invite':
+          return L10n.of(context).inviteContact;
+      }
+    } else if (category == 'notifications') {
+      switch (permissionKey) {
+        case 'rooms':
+          return L10n.of(context).notifications;
+      }
+    } else if (category == 'events') {
+      switch (permissionKey) {
+        case EventTypes.RoomName:
+          return L10n.of(context).changeTheNameOfTheGroup;
+        case EventTypes.RoomPowerLevels:
+          return L10n.of(context).editChatPermissions;
+        case EventTypes.HistoryVisibility:
+          return L10n.of(context).visibilityOfTheChatHistory;
+        case EventTypes.RoomCanonicalAlias:
+          return L10n.of(context).setInvitationLink;
+        case EventTypes.RoomAvatar:
+          return L10n.of(context).editRoomAvatar;
+        case EventTypes.RoomTombstone:
+          return L10n.of(context).replaceRoomWithNewerVersion;
+        case EventTypes.Encryption:
+          return L10n.of(context).enableEncryption;
+        case 'm.room.server_acl':
+          return L10n.of(context).editBlockedServers;
+      }
+    }
+    return permissionKey;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return ListTile(
+      onTap: onTap,
+      leading: CircleAvatar(
+        backgroundColor: Theme.of(context).scaffoldBackgroundColor,
+        foregroundColor: Colors.grey,
+        child: Icon(Icons.edit_attributes_outlined),
+      ),
+      title: Text(getLocalizedPowerLevelString(context)),
+      subtitle: Row(
+        children: [
+          Container(
+            padding: EdgeInsets.all(4),
+            decoration: BoxDecoration(
+              color: Theme.of(context).secondaryHeaderColor,
+              borderRadius: BorderRadius.circular(8),
+            ),
+            child: Center(
+              child: Text(permission.toString()),
+            ),
+          ),
+          SizedBox(width: 8),
+          Text(permission.toLocalizedPowerLevelString(context)),
+        ],
+      ),
+    );
+  }
+}
+
+extension on int {
+  String toLocalizedPowerLevelString(BuildContext context) {
+    return this == 100
+        ? L10n.of(context).admin
+        : this >= 50
+            ? L10n.of(context).moderator
+            : L10n.of(context).participant;
+  }
+}