Get and show the name of conversation members

lib/helpers/conversations_helper.dart

@@ -1,3 +1,5 @@
+import 'package:comunic/lists/conversations_list.dart';
+import 'package:comunic/lists/users_list.dart';
 import 'package:comunic/models/api_request.dart';
 import 'package:comunic/models/conversation.dart';
 
@@ -7,16 +9,15 @@ import 'package:comunic/models/conversation.dart';
 
 class ConversationsHelper {
   /// Download the list of conversations from the server
-  Future<List<Conversation>> downloadList() async {
+  Future<ConversationsList> downloadList() async {
     final response =
         await APIRequest(uri: "conversations/getList", needLogin: true).exec();
 
     if (response.code != 200) return null;
 
     try {
-      List<Conversation> list = List();
-      response.getArray().forEach((f) =>
-          list.add(Conversation(
+      ConversationsList list = ConversationsList();
+      response.getArray().forEach((f) => list.add(Conversation(
             id: f["ID"],
             ownerID: f["ID_owner"],
             lastActive: f["last_active"],
@@ -27,10 +28,23 @@ class ConversationsHelper {
           )));
 
       return list;
-
-    } on Exception catch(e){
+    } on Exception catch (e) {
       print(e.toString());
       return null;
     }
   }
+
+  /// Get the name of a [conversation]. This requires information about the
+  /// users of this conversation
+  static String getConversationName(Conversation conversation, UsersList users) {
+    if (conversation.has_name) return conversation.name;
+
+    // TODO : exclude current user name
+    String name = "";
+    for (int i = 0; i < 3 && i < conversation.members.length; i++)
+      name +=
+          (i > 0 ? ", " : "") + users.getUser(conversation.members[i]).fullName;
+
+    return name;
+  }
 }

lib/helpers/users_helper.dart

@@ -0,0 +1,47 @@
+import 'package:comunic/enums/user_page_visibility.dart';
+import 'package:comunic/lists/users_list.dart';
+import 'package:comunic/models/api_request.dart';
+import 'package:comunic/models/user.dart';
+
+/// User helper
+///
+/// Helper used to get information about the users of Comunic
+///
+/// @author Pierre HUBERT
+
+class UsersHelper {
+  /// Download information about some given users ID
+  ///
+  /// Return the list of users information in case of success, null in case of
+  /// failure
+  Future<UsersList> downloadInfo(List<int> users) async {
+    // Execute the request
+    final response = await APIRequest(
+        uri: "user/getInfoMultiple", args: {"usersID": users.join(",")}).exec();
+
+    // Check if the request did not execute correctly
+    if (response.code != 200) return null;
+
+    final list = UsersList();
+    response.getObject().forEach(
+          (k, v) => list.add(
+                User(
+                  id: v["userID"],
+                  firstName: v["firstName"],
+                  lastName: v["lastName"],
+                  pageVisibility: v["publicPage"] == "false"
+                      ? UserPageVisibility.PRIVATE
+                      : (v["openPage"] == "false"
+                          ? UserPageVisibility.PRIVATE
+                          : UserPageVisibility.OPEN),
+                  virtualDirectory: v["virtualDirectory"] == ""
+                      ? null
+                      : v["virtualDirectory"],
+                  accountImageURL: v["accountImage"],
+                ),
+              ),
+        );
+
+    return list;
+  }
+}