Can update a conversation

lib/helpers/conversations_helper.dart

@@ -8,7 +8,6 @@ import 'package:comunic/models/api_request.dart';
 import 'package:comunic/models/api_response.dart';
 import 'package:comunic/models/conversation.dart';
 import 'package:comunic/models/conversation_message.dart';
-import 'package:comunic/models/conversation_settings.dart';
 import 'package:comunic/models/new_conversation_message.dart';
 import 'package:comunic/utils/account_utils.dart';
 import 'package:meta/meta.dart';
@@ -28,7 +27,7 @@ class ConversationsHelper {
   /// Create a new conversation
   ///
   /// Return the ID of the newly created conversation or -1 in case of failure
-  Future<int> createConversation(ConversationSettings settings) async {
+  Future<int> createConversation(Conversation settings) async {
     final response =
         await APIRequest(uri: "conversations/create", needLogin: true, args: {
       "name": settings.hasName ? settings.name : "false",
@@ -41,6 +40,27 @@ class ConversationsHelper {
     return response.getObject()["conversationID"];
   }
 
+  /// Update an existing conversation
+  ///
+  /// Returns a boolean depending of the success of the operation
+  Future<bool> updateConversation(Conversation settings) async {
+    final request =
+        APIRequest(uri: "conversations/updateSettings", needLogin: true, args: {
+      "conversationID": settings.id.toString(),
+      "following": settings.following ? "true" : "false"
+    });
+
+    // Update all conversation settings, if possible
+    if(settings.isOwner) {
+      request.addString("name", settings.hasName ? settings.name : "false");
+      request.addString("members", settings.members.join(","));
+    }
+
+    final response = await request.exec();
+
+    return response.code == 200;
+  }
+
   /// Download the list of conversations from the server
   Future<ConversationsList> downloadList() async {
     final response =

lib/models/conversation.dart

@@ -1,5 +1,6 @@
 import 'package:comunic/helpers/database/database_contract.dart';
 import 'package:comunic/models/cache_model.dart';
+import 'package:comunic/utils/account_utils.dart';
 import 'package:comunic/utils/list_utils.dart';
 import 'package:meta/meta.dart';
 
@@ -34,6 +35,10 @@ class Conversation extends CacheModel implements Comparable {
   /// Check out whether a conversation has a fixed name or not
   bool get hasName => this.name != null;
 
+  /// Check out whether current user of the application is the owner of it or
+  /// not
+  bool get isOwner => this.ownerID == userID();
+
   Conversation.fromMap(Map<String, dynamic> map)
       : ownerID = map[ConversationTableContract.C_OWNER_ID],
         lastActive = map[ConversationTableContract.C_LAST_ACTIVE],

lib/models/conversation_settings.dart

@@ -1,27 +0,0 @@
-import 'package:meta/meta.dart';
-
-/// Conversation settings model
-///
-/// Use this model to create / update a conversation
-///
-/// @author Pierre HUBERT
-
-class ConversationSettings {
-  /// Set the ID to 0 if not required
-  final int id;
-  final String name;
-  final bool following;
-  final List<int> members;
-
-  ConversationSettings({
-    @required this.id,
-    @required this.name,
-    @required this.following,
-    @required this.members,
-  })  : assert(members != null && members.length > 0),
-        assert(following != null);
-
-  bool get hasName => name != null && name.length > 0;
-
-  bool get hasId => id != null && id > 0;
-}

lib/ui/routes/conversation_route.dart

@@ -1,5 +1,6 @@
 import 'package:comunic/helpers/conversations_helper.dart';
 import 'package:comunic/models/conversation.dart';
+import 'package:comunic/ui/routes/update_conversation_route.dart';
 import 'package:comunic/ui/screens/conversation_screen.dart';
 import 'package:comunic/utils/intl_utils.dart';
 import 'package:comunic/utils/ui_utils.dart';
@@ -53,6 +54,14 @@ class _ConversationRouteState extends State<ConversationRoute> {
     });
   }
 
+  void _openSettings() {
+    Navigator.of(context).push(MaterialPageRoute(builder: (b) {
+      return UpdateConversationRoute(
+        conversationID: widget.conversationID,
+      );
+    }));
+  }
+
   Widget _buildRouteBody() {
     //Handle errors
     if (_error != null && _error)
@@ -86,6 +95,12 @@ class _ConversationRouteState extends State<ConversationRoute> {
         title: Text(
           _conversationName == null ? tr("Loading") : _conversationName,
         ),
+        actions: <Widget>[
+          IconButton(
+            icon: Icon(Icons.settings),
+            onPressed: _openSettings,
+          )
+        ],
       ),
       body: _buildRouteBody(),
     );

lib/ui/routes/update_conversation_route.dart

@@ -0,0 +1,91 @@
+import 'package:comunic/helpers/conversations_helper.dart';
+import 'package:comunic/helpers/users_helper.dart';
+import 'package:comunic/lists/users_list.dart';
+import 'package:comunic/models/conversation.dart';
+import 'package:comunic/ui/screens/update_conversation_screen.dart';
+import 'package:comunic/utils/intl_utils.dart';
+import 'package:comunic/utils/ui_utils.dart';
+import 'package:flutter/material.dart';
+
+/// Update a conversation route
+///
+/// @author Pierre HUBERT
+
+class UpdateConversationRoute extends StatefulWidget {
+  final int conversationID;
+
+  const UpdateConversationRoute({Key key, this.conversationID})
+      : assert(conversationID != null),
+        super(key: key);
+
+  @override
+  State<StatefulWidget> createState() => _UpdateConversationRoute();
+}
+
+class _UpdateConversationRoute extends State<UpdateConversationRoute> {
+  Conversation _conversation;
+  UsersList _membersInfo;
+  bool _error = false;
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+    _loadConversation();
+  }
+
+  void setError(bool e) => setState(() {
+        _error = e;
+      });
+
+  /// Load information about the being updated conversation
+  Future<void> _loadConversation() async {
+    setError(false);
+
+    final conversation = await ConversationsHelper()
+        .getSingle(widget.conversationID, force: true);
+
+    if (conversation == null) return setError(true);
+
+    //Load information about the members of the conversation
+    _membersInfo = await UsersHelper().getUsersInfo(conversation.members);
+
+    if (_membersInfo == null) return setError(true);
+
+    setState(() {
+      _conversation = conversation;
+    });
+  }
+
+  /// Build the body of this widget
+  Widget _buildBody() {
+    if (_error)
+      return buildErrorCard(
+          tr("Could not load information about the conversation"),
+          actions: [
+            FlatButton(
+              onPressed: _loadConversation,
+              child: Text(
+                tr("Retry").toUpperCase(),
+                style: TextStyle(color: Colors.white),
+              ),
+            )
+          ]);
+
+    if (_conversation == null) return buildLoadingPage();
+
+    return UpdateConversationScreen(
+      initialUsers: _membersInfo,
+      initialSettings: _conversation,
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(tr("Update a conversation")),
+      ),
+      body: _buildBody(),
+    );
+  }
+}

lib/ui/screens/update_conversation_screen.dart

@@ -1,6 +1,6 @@
 import 'package:comunic/helpers/conversations_helper.dart';
 import 'package:comunic/lists/users_list.dart';
-import 'package:comunic/models/conversation_settings.dart';
+import 'package:comunic/models/conversation.dart';
 import 'package:comunic/ui/routes/conversation_route.dart';
 import 'package:comunic/ui/tiles/simple_user_tile.dart';
 import 'package:comunic/ui/widgets/pick_user_widget.dart';
@@ -14,6 +14,15 @@ import 'package:flutter/material.dart';
 enum _MembersMenuChoices { REMOVE }
 
 class UpdateConversationScreen extends StatefulWidget {
+  final Conversation initialSettings;
+  final UsersList initialUsers;
+
+  const UpdateConversationScreen({
+    Key key,
+    this.initialSettings,
+    this.initialUsers,
+  }) : super(key: key);
+
   @override
   State<StatefulWidget> createState() => _UpdateConversationScreen();
 }
@@ -23,6 +32,22 @@ class _UpdateConversationScreen extends State<UpdateConversationScreen> {
   UsersList _members = UsersList();
   bool _followConversation = true;
 
+  get isUpdating => widget.initialSettings != null;
+
+  get isOwner => !isUpdating || widget.initialSettings.isOwner;
+
+  @override
+  void initState() {
+    super.initState();
+
+    // Check if we are updating an existing conversation
+    if (widget.initialSettings != null) {
+      _nameController.text = widget.initialSettings.name;
+      _members = widget.initialUsers;
+      _followConversation = widget.initialSettings.following;
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     return Container(
@@ -34,7 +59,9 @@ class _UpdateConversationScreen extends State<UpdateConversationScreen> {
             controller: _nameController,
             decoration: InputDecoration(
               labelText: tr("Conversation name (optionnal)"),
-                alignLabelWithHint: true),
+              alignLabelWithHint: true,
+              enabled: isOwner,
+            ),
           ),
 
           // Add a member to the conversation
@@ -42,6 +69,7 @@ class _UpdateConversationScreen extends State<UpdateConversationScreen> {
             resetOnChoose: true,
             keepFocusOnChoose: true,
             label: tr("Add member"),
+            enabled: isOwner,
             onSelectUser: (user) => setState(() {
                   if (!_members.contains(user)) _members.add(user);
                 }),
@@ -57,7 +85,8 @@ class _UpdateConversationScreen extends State<UpdateConversationScreen> {
                       itemBuilder: (b, i) {
                         return SimpleUserTile(
                           user: _members[i],
-                          trailing: PopupMenuButton<_MembersMenuChoices>(
+                          trailing: isOwner
+                              ? PopupMenuButton<_MembersMenuChoices>(
                                   onSelected: (choice) =>
                                       _membersMenuItemSelected(i, choice),
                                   itemBuilder: (c) =>
@@ -67,7 +96,8 @@ class _UpdateConversationScreen extends State<UpdateConversationScreen> {
                                           value: _MembersMenuChoices.REMOVE,
                                         )
                                       ],
-                          ),
+                                )
+                              : null,
                         );
                       },
                     ),
@@ -90,7 +120,9 @@ class _UpdateConversationScreen extends State<UpdateConversationScreen> {
           // Submit button
           RaisedButton(
             onPressed: _members.length < 1 ? null : _submitForm,
-            child: Text(tr("Create the conversation")),
+            child: Text(isUpdating
+                ? tr("Update the conversation")
+                : tr("Create the conversation")),
           )
         ],
       ),
@@ -109,24 +141,40 @@ class _UpdateConversationScreen extends State<UpdateConversationScreen> {
 
   /// Submit the conversation
   Future<void> _submitForm() async {
-    final settings = ConversationSettings(
-      id: 0,
+    final settings = Conversation(
+        id: isUpdating ? widget.initialSettings.id : 0,
         name: _nameController.text,
         following: _followConversation,
         members: _members.usersID,
-    );
+
+        // Give random value to these fields as they are ignored here
+        lastActive: 0,
+        ownerID: 0,
+        sawLastMessage: true);
 
     // Create the conversation
-    final conversationID = await ConversationsHelper().createConversation(settings);
+    var conversationID = settings.id;
+    bool error = false;
+    if (isUpdating)
+      error = !(await ConversationsHelper().updateConversation(settings));
+    else {
+      conversationID = await ConversationsHelper().createConversation(settings);
+      if (conversationID < 1) error = true;
+    }
 
     // Check for errors
-    if(conversationID < 1)
-      return Scaffold.of(context).showSnackBar(
-          SnackBar(content: Text(tr("Could not create the conversation!")), duration: Duration(seconds: 1),));
+    if (error)
+      return Scaffold.of(context).showSnackBar(SnackBar(
+        content: Text(isUpdating
+            ? tr("Could not update the conversation!")
+            : tr("Could not create the conversation!")),
+        duration: Duration(seconds: 1),
+      ));
 
     // Open the conversation
     Navigator.of(context).pushReplacement(MaterialPageRoute(
-      builder: (c) => ConversationRoute(conversationID: conversationID,)
-    ));
+        builder: (c) => ConversationRoute(
+              conversationID: conversationID,
+            )));
   }
 }

lib/ui/widgets/pick_user_widget.dart

@@ -18,13 +18,15 @@ class PickUserWidget extends StatefulWidget {
   final String label;
   final bool resetOnChoose;
   final bool keepFocusOnChoose;
+  final bool enabled;
 
   const PickUserWidget(
       {Key key,
       @required this.onSelectUser,
       @required this.label,
       this.resetOnChoose = false,
-      this.keepFocusOnChoose = false})
+      this.keepFocusOnChoose = false,
+      this.enabled = true})
       : assert(onSelectUser != null),
         assert(label != null),
         assert(resetOnChoose != null),
@@ -66,6 +68,7 @@ class _PickUserWidgetState extends State<PickUserWidget> {
       focusNode: _focusNode,
       onChanged: (s) => _updateSuggestions(),
       controller: _controller,
+      enabled: widget.enabled,
       decoration: InputDecoration(
         labelText: widget.label,
         alignLabelWithHint: true,