Can create group conversations

lib/models/advanced_group_info.dart

@@ -1,4 +1,5 @@
 import 'package:comunic/enums/likes_type.dart';
+import 'package:comunic/models/conversation.dart';
 import 'package:comunic/models/like_element.dart';
 import 'package:flutter/material.dart';
 
@@ -15,6 +16,7 @@ class AdvancedGroupInfo extends Group implements LikeElement {
   String url;
   int likes;
   bool userLike;
+  List<Conversation> conversations;
 
   AdvancedGroupInfo({
     @required int id,

lib/models/conversation.dart

@@ -4,6 +4,8 @@ import 'package:comunic/utils/account_utils.dart';
 import 'package:flutter/material.dart';
 import 'package:meta/meta.dart';
 
+import 'group.dart';
+
 /// Conversation model
 ///
 /// @author Pierre HUBERT
@@ -17,6 +19,7 @@ class Conversation extends SerializableElement<Conversation> {
   final Color color;
   final String logoURL;
   final int groupID;
+  final GroupMembershipLevel groupMinMembershipLevel;
   final List<ConversationMember> members;
   final bool canEveryoneAddMembers;
   final CallCapabilities callCapabilities;
@@ -29,6 +32,7 @@ class Conversation extends SerializableElement<Conversation> {
     @required this.color,
     @required this.logoURL,
     @required this.groupID,
+    @required this.groupMinMembershipLevel,
     @required this.members,
     @required this.canEveryoneAddMembers,
     this.callCapabilities = CallCapabilities.NONE,
@@ -37,6 +41,7 @@ class Conversation extends SerializableElement<Conversation> {
         assert(lastActivity != null),
         assert(members != null),
         assert(canEveryoneAddMembers != null),
+        assert((groupID == null) == (groupMinMembershipLevel == null)),
         assert(callCapabilities != null),
         assert(isHavingCall != null);
 
@@ -78,6 +83,9 @@ class Conversation extends SerializableElement<Conversation> {
         color = map["color"] == null ? null : Color(map["color"]),
         logoURL = map["logoURL"],
         groupID = map["groupID"],
+        groupMinMembershipLevel = GroupMembershipLevel.values.firstWhere(
+            (element) => element.toString() == map["groupMinMembershipLevel"],
+            orElse: () => null),
         lastActivity = map["lastActivity"],
         members = map["members"]
             .map((el) => ConversationMember.fromJSON(el))
@@ -96,6 +104,7 @@ class Conversation extends SerializableElement<Conversation> {
       "color": color?.value,
       "logoURL": logoURL,
       "groupID": groupID,
+      "groupMinMembershipLevel": groupMinMembershipLevel?.toString(),
       "lastActivity": lastActivity,
       "members": members.map((e) => e.toJson()).toList(),
       "canEveryoneAddMembers": canEveryoneAddMembers,

lib/models/new_group_conversation.dart

@@ -0,0 +1,21 @@
+import 'package:comunic/models/group.dart';
+import 'package:flutter/foundation.dart';
+
+/// This class contains information about a conversation linked to a group
+/// to create
+///
+/// @author Pierre Hubert
+
+class NewGroupConversation {
+  final int groupID;
+  final String name;
+  final GroupMembershipLevel minMembershipLevel;
+
+  const NewGroupConversation({
+    @required this.groupID,
+    @required this.name,
+    @required this.minMembershipLevel,
+  })  : assert(groupID != null),
+        assert(name != null),
+        assert(minMembershipLevel != null);
+}

lib/models/server_config.dart

@@ -58,6 +58,7 @@ class ServerDataConservationPolicy {
 }
 
 class ConversationsPolicy {
+  final int maxConversationNameLen;
   final int minMessageLen;
   final int maxMessageLen;
   final List<String> allowedFilesType;
@@ -72,6 +73,7 @@ class ConversationsPolicy {
   final int maxLogoHeight;
 
   const ConversationsPolicy({
+    @required this.maxConversationNameLen,
     @required this.minMessageLen,
     @required this.maxMessageLen,
     @required this.allowedFilesType,
@@ -84,7 +86,8 @@ class ConversationsPolicy {
     @required this.maxThumbnailHeight,
     @required this.maxLogoWidth,
     @required this.maxLogoHeight,
-  })  : assert(minMessageLen != null),
+  })  : assert(maxConversationNameLen != null),
+        assert(minMessageLen != null),
         assert(maxMessageLen != null),
         assert(allowedFilesType != null),
         assert(filesMaxSize != null),