import 'package:collection/collection.dart' show IterableExtension; import 'package:comunic/helpers/serialization/base_serialization_helper.dart'; import 'package:comunic/models/conversation_member.dart'; import 'package:comunic/utils/account_utils.dart'; import 'package:flutter/material.dart'; import 'group.dart'; /// Conversation model /// /// @author Pierre HUBERT enum CallCapabilities { NONE, AUDIO, VIDEO } class Conversation extends SerializableElement { final int? id; final int? lastActivity; final String? name; final Color? color; final String? logoURL; final int? groupID; final GroupMembershipLevel? groupMinMembershipLevel; final List? members; final bool? canEveryoneAddMembers; final CallCapabilities callCapabilities; final bool isHavingCall; Conversation({ /*required*/ required int this.id, /*required*/ required int this.lastActivity, required this.name, required this.color, required this.logoURL, required this.groupID, required this.groupMinMembershipLevel, /*required*/ required List this.members, /*required*/ required bool this.canEveryoneAddMembers, this.callCapabilities = CallCapabilities.NONE, this.isHavingCall = false, }) : assert(id != null), assert(lastActivity != null), assert(members != null), assert(canEveryoneAddMembers != null), assert((groupID == null) == (groupMinMembershipLevel == null)), assert(callCapabilities != null), assert(isHavingCall != null); /// Check out whether a conversation has a fixed name or not bool get hasName => this.name != null; /// Get current user membership ConversationMember get membership => members!.firstWhere((m) => m.userID == userID()); /// Check out whether current user of the application is an admin bool get isAdmin => membership.isAdmin; /// Check if current user is the last admin of the conversation bool get isLastAdmin => isAdmin && adminsID.length == 1; /// Check it current user is following the conversation or not bool get following => membership.following; /// Get the list of members in the conversation Set get membersID => members!.map((e) => e.userID).toSet(); /// Get the list of admins in the conversation Set get adminsID => members!.where((e) => e.isAdmin).map((e) => e.userID).toSet(); /// Get the list of the OTHER members of the conversation (all except current user) Set get otherMembersID => membersID..remove(userID()); /// Check if the last message has been seen or not bool get sawLastMessage => lastActivity! <= membership.lastAccessTime; /// Check out whether a conversation is managed or not bool get isManaged => isGroupConversation; bool get isGroupConversation => groupID != null; bool get hasLogo => logoURL != null; Conversation.fromJson(Map map) : id = map["id"], name = map["name"], color = map["color"] == null ? null : Color(map["color"]), logoURL = map["logoURL"], groupID = map["groupID"], groupMinMembershipLevel = GroupMembershipLevel.values.firstWhereOrNull( (element) => element.toString() == map["groupMinMembershipLevel"]), lastActivity = map["lastActivity"], members = map["members"] .map((el) => ConversationMember.fromJSON(el)) .toList() .cast(), canEveryoneAddMembers = map["canEveryoneAddMembers"], // By default, we can not do any call callCapabilities = CallCapabilities.NONE, isHavingCall = false; Map toJson() { return { "id": id, "name": name, "color": color?.value, "logoURL": logoURL, "groupID": groupID, "groupMinMembershipLevel": groupMinMembershipLevel?.toString(), "lastActivity": lastActivity, "members": members!.map((e) => e.toJson()).toList(), "canEveryoneAddMembers": canEveryoneAddMembers, }; } @override int compareTo(Conversation other) { return other.lastActivity!.compareTo(this.lastActivity!); } }