(function( window, document, $, _ ) {
/**
 * @namespace window.TDR.RECOMMENDCONTENTS
 * @file      recommendcontents.js
 * @return    none
 */
"use strict";

var TDR = window.TDR = window.TDR || {};
TDR.RECOMMENDCONTENTS = TDR.RECOMMENDCONTENTS || {};

/**
 * @param  {string} str_id            Parameter.
 * @param  {string} display_block_id  Display block id, it does not display processing.
 * @param  {string} parent_block_id   Parent block id. If null, it does not display processing.
 * @param  {number} max               Max number. If null, the I mean the maximum.
 * @param  {string} fqdn              Hostname.
 * @return {jQuery.Deferred}
 */
function RecommendContents( str_id, display_block_id, parent_block_id, max, fqdn ) {
	try{
		if( typeof str_id           !== 'string' ) throw 'initialize_error';
		if( typeof display_block_id !== 'string' ) throw 'initialize_error';
		if( typeof parent_block_id  !== 'string' && parent_block_id !== null ) throw 'initialize_error';
		if( typeof max              !== 'number' && max !== null ) throw 'initialize_error';
		if( typeof fqdn             !== 'string' ) throw 'initialize_error';
	} catch(e) {
		$('body').trigger( $.Event( 'onLoadRecommendcontents' ), [ '', { result:false, total_count:0 } ] );
		return false;
	}

	this.protocol     = '//';
	//this.protocol     = 'http://';
	this.fqdn         = fqdn;
	this.pathname     = '/api/v1/wapi_recommendcontents/lists/';
	this.str_id       = str_id;

	this.total_count  = 0;
	this.max          = max;

	// cache variable
	this.parsed_data  = null;

	this.$body          = $( 'body' );
	this.$display_block = $( '#' + display_block_id );
	this.$parent_block  = $( '#' + parent_block_id );

	this.requestURL     = [ this.protocol, this.fqdn, this.pathname, 'str_id:', this.str_id, '/' ].join( '' );

	this.template = [
		'{{each( index, value ) list}}',
		'	<div>',
		'		<a href="${url_pc}">',
		'			{{if thum_url_pc != ""}}<img src="${thum_url_pc}" />{{/if}}',
		'			<dl>',
		'				{{if name != ""}}<dt>{{html name}}</dt>{{/if}}',
		'				{{if text != ""}}<dd>{{html text}}</dd>{{/if}}',
		'			</dl>',
		'		</a>',
		'	</div>',
		'{{/each}}' ].join( '' );

	var $dfd = $.Deferred();
	this._request( $dfd );
	return $dfd.promise();

}
RecommendContents.prototype = {
	_request : function($dfd) {
		var _this = this;

		$.ajax( {
			url: this.requestURL,
			type: 'GET',
			dataType: 'jsonp',
      data: {
        _: Math.floor(new Date().getTime() / TDR.CONFIG.CacheTime)
      },
      cache : true,
			beforeSend : function( xhr ) {
				xhr.setRequestHeader("If-Modified-Since", "Thu, 01 Jun 1970 00:00:00 GMT");
			},
			jsonpCallback: 'TDR_RecommendContents_' + this.str_id
		}).done(function( res, status, xhr ) {
			try{
				if( res.result_code !== '0' ) throw 'request error.';

				_this.total_count = res.total_count;

				_this._parser( res );
				_this._render();
				$dfd.resolve( _this );
			} catch( e ) {
				_this.$body.trigger( $.Event( 'onLoadRecommendcontents' ), [ _this.requestURL, { result:false, total_count:0 } ] );
				$dfd.reject();
				return false;
			}
		}).fail(function( xhr, status, error ) {
			_this.$body.trigger( $.Event( 'onLoadRecommendcontents' ), [ _this.requestURL, { result:false, total_count:0 } ] );
			$dfd.reject();
			return false;
		}).always(function( xhr, status ) {
		});
	},
	_parser : function( data ) {
		var _this = this,
			target_data_list = data.entries,
			parsed_data_list = [];
		_( target_data_list ).forEach(function( data ) {
			var target_data = data;

			if( typeof _this.parsed_data_extends === 'function' ) {
				target_data = _this.parsed_data_extends( _this, target_data );
			}

			parsed_data_list.push( target_data );
		});

		if( this.max !== null ) parsed_data_list = parsed_data_list.slice( 0, this.max );

		this.parsed_data = { list:parsed_data_list };
	},
	_render : function() {
		var html = $.tmpl( this.template, this.parsed_data );

		this.$display_block.html( html );

		if( this.$parent_block.length !== 0 && this.parsed_data.list.length !== 0 ) {
			this.$parent_block.removeClass( 'js-display-none' );
		}

		this.$body.trigger( $.Event( 'onLoadRecommendcontents' ), [ this.requestURL, { result:true, total_count:this.total_count } ] );
	}
};

TDR.RECOMMENDCONTENTS = RecommendContents;

})( window, document, jQuery, _ );