all files / app/main/apps/chat/services/ chats.service.js

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(function ()
{
    'use strict';
 
    angular
        .module('app.chat')
        .factory('ChatsService', ChatsService);
 
    /** @ngInject */
    function ChatsService($q, msApi)
    {
        
        var service = {
            chats         : {},
            contacts      : [],
            getContactChat: getContactChat
        };
 
        /**
         * Get contact chat from the server
         *
         * @param contactId
         * @returns {*}
         */
        function getContactChat(contactId)
        {
 
            // Create a new deferred object
            var deferred = $q.defer();
 
            // If contact doesn't have lastMessage, create a new chat
            if ( !service.contacts.getById(contactId).lastMessage)
            {
                service.chats[contactId] = [];
 
                deferred.resolve(service.chats[contactId]);
            }
 
            // If the chat exist in the service data, do not request
            if ( service.chats[contactId] )
            {
                deferred.resolve(service.chats[contactId]);
                
                return deferred.promise;
            }
 
            // Request the chat with the contactId
            msApi.request('chat.chats@get', {id: contactId},
 
                // SUCCESS
                function (response)
                {
                    // Attach the chats
                    service.chats[contactId] = response.data;
 
                    // Resolve the promise
                    deferred.resolve(service.chats[contactId]);
                },
 
                // ERROR
                function (response)
                {
                    deferred.reject(response);
                }
            );
 
            return deferred.promise;
        }
 
        /**
         * Array prototype
         *
         * Get by id
         *
         * @param value
         * @returns {T}
         */
        Array.prototype.getById = function (value)
        {
            return this.filter(function (x)
            {
                return x.id === value;
            })[0];
        };
        return service;
    }
})();