/**
 * Request v1.1
 * Copyright (C) 2012 AlfaCode @ support@alfacode.net
 *
 */

function objById( id ){
    var obj = document.getElementById(id);
    if( obj == 'null' || obj == 'undefined' || obj === null ) return false
    return obj
}

(function(window){

    var Request = {

        obj : null,
        self : null,
        action: null,
        loader : { className:'ajax-loader' },



        setObj : function( obj ){

            self = this;

            var id = typeof( obj ) == 'object' ? obj.id : obj;


            this.obj = objById( id );

            /* View */
            if( !this.obj ) this.obj = new View( obj );
            this.obj = objById( this.obj.id + '_Body' ) ? objById( this.obj.id + '_Body' ) : this.obj;

            return this;

        },

        $ : function( obj ){
            this.setObj( obj )
            return this;
        },

        send : function(url, data, type  ){
            this.xhr(url, data, type )
        },

        submit : function(url, data, type  ){
            this.xhr(url, data, type )
        },

        get : function(url, data ){
            this.xhr(url, data, 'get' )
        },

        post : function(url, data ){
            this.xhr(url, data, 'post' )
        },

        put : function(url, data ){
            this.xhr(url, data, 'put' )
        },


        xhr : function( url, data, type ){

            this.didStartLoad();
            this.jsHttpRequest(self.obj,  url , data, type || 'POST' )

            return  this;
        },


        jsHttpRequest : function( obj, url, data, type ){

            var req = new JsHttpRequest();
            var tar = obj; // New !!!


            req.open( type, url, true );

            setTimeout(function() { req.send( data ); }, 10 )

            req.onreadystatechange = function() {
                if (req.readyState == 4) {
                    if (req.status == 200){

                        self.didFinishLoad()

                        tar.innerHTML = req.responseText;
                        self.postResponce( tar.childNodes )

                    }else{

                        self.didFailLoadWithError()
                        tar.innerHTML = 'Error: ' + req.status + '<br /> ' + req.responseText

                    }


                    //RESET
                    self.didStartLoad =  function(){ self.displayLoader( self.obj ) }
                    self.didFinishLoad = function(){ }
                    self.didFailLoadWithError =  function(){ }
                    action = null
            	}
            }




        },

        displayLoader : function( obj ){

            var LoaderBox = objById( obj.id + '_Loader' );

                if( !LoaderBox ){

                    var Loader = document.createElement('div');
                    with(Loader){

                        id = obj.id+'_Loader';
                        className = this.loader.className;
                        innerHTML = "&nbsp;";
                    }
                    obj.appendChild(Loader);

                }

            return this
        },



        didStartLoad: function(){
            self.displayLoader( self.obj )
        },

        didFinishLoad: function(){},
        didFailLoadWithError: function(){},



        postResponce : function( responce ){

            var script_id = 'app_js'

             nodes = responce

             var scripts = [];
             for ( var i = 0; nodes[i]; i++ ) {
               if ( scripts && nodes[i].nodeName.toLowerCase() === "script" &&
                    ( !nodes[i].type || nodes[i].type.toLowerCase() === "text/javascript" ) ) {
                     scripts.push( nodes[i].parentNode ? nodes[i].parentNode.removeChild( nodes[i] ) : nodes[i] );
                }
             }

             for ( script in scripts ){

                 var scr = document.getElementById( script_id )
                 if ( scr ) scr.parentNode.removeChild( scr )



                 var scr = document.createElement('script');
                     scr.id = script_id;
                     scr.type = 'text/javascript';
                     scr.text = scripts[script].text || scripts[script].textContent || scripts[script].innerHTML || "";


                    if( scripts[script].getAttribute("src")  ){
                        scr.src = scripts[script].src || '';
                     }

                     document.body.appendChild( scr );
             }
        }

    }

    window.Request = Request;

} )(window);