/************************************************************************
 * This file is part of EspoCRM.
 *
 * EspoCRM - Open Source CRM application.
 * Copyright (C) 2014-2015 Yuri Kuznetsov, Taras Machyshyn, Oleksiy Avramenko
 * Website: http://www.espocrm.com
 *
 * EspoCRM is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * EspoCRM is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with EspoCRM. If not, see http://www.gnu.org/licenses/.
 ************************************************************************/

Espo.Language = function (cache) {
    this.cache = cache || null;
    this.data = {};
};

_.extend(Espo.Language.prototype, {

    data: null,

    cache: null,
    
    url: 'I18n',
    
    has: function (name, category, scope) {
        if (scope in this.data) {
            if (category in this.data[scope]) {
                if (name in this.data[scope][category]) {
                    return true;
                }
            }
        }
    },

    get: function (scope, category, name) {
        if (scope in this.data) {
            if (category in this.data[scope]) {
                if (name in this.data[scope][category]) {
                    return this.data[scope][category][name];
                }
            }
        }
        if (scope == 'Global') {
            return name;
        }
        return false;
    },

    translate: function (name, category, scope) {
        scope = scope || 'Global';
        category = category || 'labels';
        var res = this.get(scope, category, name);
        if (res === false && scope != 'Global') {
            res = this.get('Global', category, name);
        }
        return res;
    },
    
    translateOption: function (value, field, scope) {
        var translation = this.translate(field, 'options', scope);
        if (typeof translation != 'object') {
            translation = {};
        }
        return translation[value] || value;
    },
    
    loadFromCache: function () {
        
        if (this.cache) {
            var cached = this.cache.get('app', 'language');
            if (cached) {
                this.data = cached;
                return true;
            }
        }
        return null;
    },
    
    clearCache: function () {
        if (this.cache) {
            this.cache.clear('app', 'language');
        }
    },
    
    storeToCache: function () {
        if (this.cache) {
            this.cache.set('app', 'language', this.data);
        }
    },
    
    load: function (callback, disableCache) {
        this.once('sync', callback);

        if (!disableCache) {
            if (this.loadFromCache()) {
                this.trigger('sync');
                return;
            }
        }

        this.fetch();
    },

    fetch: function (sync) {
        var self = this;
        $.ajax({
            url: this.url,
            type: 'GET',
            dataType: 'JSON',
            async: !(sync || false),
            success: function (data) {
                self.data = data;
                self.storeToCache();
                self.trigger('sync');
            }
        });
    },
    
}, Backbone.Events);