var CloudCommander, CloudFunc, CodeMirror;
/* object contains editors CodeMirror
 * and later will be Ace
 */
CloudCommander.Editor = {};
CloudCommander.Editor.CodeMirror = {    
    load: (function(pParent){ /* function loads CodeMirror js and css files */
    
        /* function shows editor */
        var createEditorDiv = function(){
            if (!document.getElementById('CloudEditor')) {
                var lEditor=document.createElement('div'); 
                lEditor.id ='CloudEditor';
                var lFM = document.getElementById('fm');
                
                if(lFM){
                    lFM.appendChild(lEditor);                        
                }else console.log('Error. Something went wrong FM not found');
                
                pParent.show();
            }
        };
        /* function loads css files
         * of CodeMirror
         */
        var loadAll = function(pParent) {
            return function(){
                CloudCommander.cssLoad({
                    src     : 'lib/client/editor/codemirror/pack/codemirror.pack.css'
                });
              
                CloudCommander.cssLoad({
                    src     : 'lib/client/editor/codemirror/pack/night.pack.css'
                });
              
                CloudCommander.cssSet({id:'editor',
                    inner : '.CodeMirror{'                          +
                                'font-family :\'Droid Sans Mono\';' +
                                'font-size   :15px;'                +
                                'padding     :20px;'                +
                            '}'                                     +
                            '.CodeMirror-scroll{'                   +
                                'height      : 660px;'              +
                            '}'
                });  
                          
                CloudCommander.jsload('lib/client/editor/'          +
                    'codemirror/pack/javascript.pack.js',
                    createEditorDiv);
            };
        };
        
        /* load CodeMirror main module */
        CloudCommander.jsload('lib/client/editor/'                  +
            'codemirror/pack/codemirror.pack.js',
            loadAll(this));
    }),
    
    show : (function(){ /* function shows CodeMirror editor */
            /* if CloudEditor is not loaded - loading him */
            if(!document.getElementById('CloudEditor'))
                return this.load(this);
              /* removing keyBinding if set */            
            
            var lParent = this;
            var initCodeMirror_f = function(pValue){
                CodeMirror(lCloudEditor,{
                    mode        : 'xml',
                    value       : pValue,
                    theme       : 'night',
                    lineNumbers : true,
                    //переносим длинные строки                    
                    lineWrapping: false,
                    autofocus   : true,
                    extraKeys: {
                      //Сохранение
                      "Esc": lParent.hide(lParent)
                    }
                });
            };
            
            var lLeft           = this.getById('left');
            var lCloudEditor    = this.getById('CloudEditor');
            var lCURRENTFILE    = CloudCommander.CURRENT_FILE;
            
                                    
            var lCurrent        = this.getByClass(lCURRENTFILE);
            var lA;
            if(lCurrent.length){
                lCurrent = lCurrent[0];
                
                /* getting link */
                lA = lCurrent.getElementsByTagName('a');                    
                if(!lA.length)
                    return console.log('Error:' + 
                        'can not find links in current file');
                
                lA = lA[0].href;                
                /* убираем адрес хоста*/
                lA = '/' + lA.replace(document.location.href,'');
                
                /* checking is this link is to directory */
                var lSize = lCurrent.getElementsByClassName('size');
                if(lSize){
                    lSize = lSize[0].textContent;
                    
                    /* if directory - load json
                     * not html data
                     */
                    if (lSize === '<dir>'){
                        if (lA.indexOf(CloudFunc.NOJS) ===
                            CloudFunc.FS.length){
                            lA = lA.replace(CloudFunc.NOJS, '');
                        }
                    }
                }                
            }
            
            /* показываем гиф загрузки возле пути папки сверху*/
            var lLoadingImage   = CloudCommander._images.loading();
            var lErrorImage     = CloudCommander._images.error();
            
            lLoadingImage.className='icon loading';/* показываем загрузку*/
            lErrorImage.className='icon error hidden';/* прячем ошибку */            
            /* show loading icon */
            lCurrent.firstChild.nextSibling.appendChild(lLoadingImage);
            
            /* reading data from current file */
            $.ajax({
                url:lA,
                 error: function(jqXHR, textStatus, errorThrown){
                    lErrorImage.className   ='icon error';
                    lErrorImage.title       = jqXHR.responseText;
                    
                    lCurrent.firstChild.nextSibling.appendChild(lErrorImage);
                    
                    lLoadingImage.className ='hidden';
                    
                    console.log(jqXHR.responseText);
                 },
                 
                 success:function(data, textStatus, jqXHR){                    
                    /* if we got json - show it */
                    if(typeof data === 'object')
                        data = JSON.stringify(data, null, 4);
                    
                    initCodeMirror_f(data);
                    
                    CloudCommander.keyBinded = false;
                    
                    lLeft   &&
                        (lLeft.className = 'panel hidden');
                    
                    lLoadingImage.className ='hidden';
                }
            });            
        }),                                
    hide :  (function(pParent) {
                return function(){
                    CloudCommander.keyBinded = true;
                    
                    var lLeft           = pParent.getById('left');
                    var lCloudEditor    = pParent.getById('CloudEditor');
                    
                    /*
                    lCloudEditor &&
                        (lCloudEditor.className  = 'hidden');
                    */
                    lLeft       &&
                        (lLeft.className         = 'panel');
                        
                    var lCodeMirror = pParent.getByClass('CodeMirror');
                    if(lCodeMirror.length)
                        lCloudEditor
                            .removeChild(lCodeMirror[0]);
                };
            }),
    getById     : function(pId){return document.getElementById(pId);},
    
    getByClass  : function(pClass){
        return document.getElementsByClassName(pClass);
    },
    
    getPanel    : function(){
        var lCurrent = document.getElementsByClassName('current-file');
        lCurrent.length &&
            (lCurrent = lCurrent[0].parentElement);
        
        return lCurrent && lCurrent.id;
    }
};
CloudCommander.Editor.Keys = (function(){
    "use strict";
    
    /* loading js and css of CodeMirror */
    CloudCommander.Editor.CodeMirror.show(CloudCommander.Editor.CodeMirror);
    
    var key_event=function(event){

        /* если клавиши можно обрабатывать */
        if(CloudCommander.keyBinded){
            /* if f4 pressed */
            if(event.keyCode===115){
                CloudCommander.Editor.CodeMirror.show();
            }
        }
    };
       
    /* добавляем обработчик клавишь */
    if (document.addEventListener)                
        document.addEventListener('keydown', key_event,false);
        
    else        
        document.onkeypress=key_event;
});