Open private conversation from friends list

lib/helpers/conversations_helper.dart

@@ -58,8 +58,7 @@ class ConversationsHelper {
 
     final response = await request.exec();
 
-    if(response.code != 200)
+    if (response.code != 200) return false;
-      return false;
 
     //Delete old conversation entry from the database
     await _conversationsDatabaseHelper.delete(settings.id);
@@ -160,6 +159,30 @@ class ConversationsHelper {
     return name;
   }
 
+  /// Search and return a private conversation with a given [userID]. If such
+  /// conversation does not exists, it is created if [allowCreate] is set to
+  /// true
+  Future<int> getPrivate(int userID, {bool allowCreate = true}) async {
+    final response = await APIRequest(
+      uri: "conversations/getPrivate",
+      needLogin: true,
+      args: {
+        "otherUser": userID.toString(),
+        "allowCreate": allowCreate.toString()
+      },
+    ).exec();
+
+    if (response.code != 200) return null;
+
+    // Get and return conversation ID
+    try {
+      return int.parse(response.getObject()["conversationsID"][0]);
+    } catch (e) {
+      e.toString();
+      return null;
+    }
+  }
+
   /// Asynchronously get the name fo the conversation
   ///
   /// Unlike the synchronous method, this method does not need information

lib/ui/screens/friends_list_screen.dart

@@ -6,6 +6,7 @@ import 'package:comunic/models/friend.dart';
 import 'package:comunic/ui/tiles/accepted_friend_tile.dart';
 import 'package:comunic/ui/tiles/pending_friend_tile.dart';
 import 'package:comunic/ui/widgets/safe_state.dart';
+import 'package:comunic/utils/conversations_utils.dart';
 import 'package:comunic/utils/intl_utils.dart';
 import 'package:comunic/utils/ui_utils.dart';
 import 'package:flutter/material.dart';
@@ -111,6 +112,7 @@ class _FriendsListScreenState extends SafeState<FriendsListScreen> {
                   ? AcceptedFriendTile(
                       friend: _friendsList[i],
                       user: _usersInfo.getUser(_friendsList[i].id),
+                      onOpenPrivateConversation: _openPrivateConversation,
                       onSetFollowing: _setFollowingFriend,
                       onRequestDelete: _deleteFriend,
                     )
@@ -135,7 +137,6 @@ class _FriendsListScreenState extends SafeState<FriendsListScreen> {
     _loadList();
   }
 
-
   /// Update following status of a friend
   Future<void> _setFollowingFriend(Friend friend, bool follow) async {
     loading = true;
@@ -144,7 +145,6 @@ class _FriendsListScreenState extends SafeState<FriendsListScreen> {
       showSimpleSnack(context, tr("Could not update following status!"));
 
     _loadList();
-
   }
 
   /// Handles deletion request of a friend
@@ -182,4 +182,11 @@ class _FriendsListScreenState extends SafeState<FriendsListScreen> {
     // Refresh list
     _loadList();
   }
+
+  /// Open a private conversation for a given [friend]
+  Future<void> _openPrivateConversation(Friend friend) async {
+    loading = true;
+    await openPrivateConversation(context, friend.id);
+    loading = false;
+  }
 }

lib/ui/tiles/accepted_friend_tile.dart

@@ -9,16 +9,18 @@ import 'package:flutter/material.dart';
 ///
 /// @author Pierre HUBERT
 
-enum _FriendMenuChoices { REMOVE, TOGGLE_FOLLOWING }
+enum _FriendMenuChoices { REMOVE, TOGGLE_FOLLOWING, PRIVATE_CONVERSATION }
 
 typedef OnRequestDeleteFriend = void Function(Friend);
 typedef OnSetFollowing = void Function(Friend, bool);
+typedef OnOpenPrivateConversation = void Function(Friend);
 
 class AcceptedFriendTile extends StatelessWidget {
   final Friend friend;
   final User user;
   final OnRequestDeleteFriend onRequestDelete;
   final OnSetFollowing onSetFollowing;
+  final OnOpenPrivateConversation onOpenPrivateConversation;
 
   const AcceptedFriendTile({
     Key key,
@@ -26,10 +28,12 @@ class AcceptedFriendTile extends StatelessWidget {
     @required this.user,
     @required this.onRequestDelete,
     @required this.onSetFollowing,
+    @required this.onOpenPrivateConversation,
   })  : assert(friend != null),
         assert(user != null),
         assert(onRequestDelete != null),
         assert(onSetFollowing != null),
+        assert(onOpenPrivateConversation != null),
         super(key: key);
 
   @override
@@ -49,6 +53,13 @@ class AcceptedFriendTile extends StatelessWidget {
             ),
       trailing: PopupMenuButton<_FriendMenuChoices>(
         itemBuilder: (c) => [
+              //Open a private conversation
+              PopupMenuItem(
+                child: Text(tr("Private conversation")),
+                value: _FriendMenuChoices.PRIVATE_CONVERSATION,
+              ),
+
+              // Update following status
               PopupMenuItem(
                 child: Row(
                   children: <Widget>[
@@ -61,6 +72,8 @@ class AcceptedFriendTile extends StatelessWidget {
                 ),
                 value: _FriendMenuChoices.TOGGLE_FOLLOWING,
               ),
+
+              // Remove the friend from the list
               PopupMenuItem(
                 child: Text(tr("Remove")),
                 value: _FriendMenuChoices.REMOVE,
@@ -75,6 +88,11 @@ class AcceptedFriendTile extends StatelessWidget {
     if (value == null) return;
 
     switch (value) {
+      // Open private conversation
+      case _FriendMenuChoices.PRIVATE_CONVERSATION:
+        onOpenPrivateConversation(friend);
+        break;
+
       //Toggle following status
       case _FriendMenuChoices.TOGGLE_FOLLOWING:
         onSetFollowing(friend, !friend.following);

lib/utils/conversations_utils.dart

@@ -0,0 +1,31 @@
+import 'package:comunic/helpers/conversations_helper.dart';
+import 'package:comunic/ui/routes/conversation_route.dart';
+import 'package:comunic/utils/intl_utils.dart';
+import 'package:comunic/utils/ui_utils.dart';
+import 'package:flutter/material.dart';
+
+/// Conversations utilities
+///
+/// @author Pierre HUBERT
+
+/// Open a private conversation with a given [userID]
+Future<bool> openPrivateConversation(BuildContext context, int userID) async {
+  final convID = await ConversationsHelper().getPrivate(userID);
+
+  if (convID == null) {
+    showSimpleSnack(context, tr("Could not find a private conversation!"));
+    return false;
+  }
+
+  // Open the conversation
+  Navigator.of(context).push(
+    MaterialPageRoute(
+      builder: (c) => ConversationRoute(
+            conversationID: convID,
+          ),
+    ),
+  );
+
+  // Success
+  return true;
+}