/*
* File Manager
*
* Copyright (c) 2010 Tom Kay - oridan82@gmail.com
*
* This program 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.
*
* This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.*
*
*/

;(function($){
    var optionDefaults = {
        path            : '',
        upload          : false,
        readonly        : false,
        fixedPath       : false,
        createFolder    : true,
        
        baseClass       : 'fmBase',
        folderClass     : 'fmFolder',
        trashClass      : 'fmTrash',
        loadingClass    : 'fmLoading',

        highlightClass  : 'ui-state-highlight',
        hoverClass      : 'ui-state-active'
    };

    $.fn.fileManager = function(settings, pluploadOptions) {
        var mbOptions = $.extend({}, optionDefaults, settings);
        if (!mbOptions.ajaxPath) {
            alert('ajaxPath not specified'); return;
        }
        if (mbOptions.fixedPath) mbOptions.path = mbOptions.fixedPath;

        pluploadOptions = $.extend({url:mbOptions.ajaxPath,runtimes:'html5,html4'}, pluploadOptions);

        var query = $.extend({},{path:mbOptions.path},mbOptions.get);
        this.each(function () { // swap with getJSON so not duplicating ajax
            var $sel = $(this);
            $.getJSON(mbOptions.ajaxPath, query, function(data, status) {
                $sel.data('result',data);
                $sel.data('options',mbOptions);
                if (status != "success") {
                    var msg = "Sorry but there was an error: "+status;
                }
                // process response
                $sel.empty();

                if (!mbOptions.readonly) {
                    $sel.append('<div>Path: '+data.rootPath+data.path+'</div>');
                    if (data.path && !mbOptions.fixedPath) DrawItem($sel,{path:'..',title:'..',type:1});
                    DrawItem($sel,{path:'',title:'',type:2});
                }
                if ($(data.files).length == 0) {
                  $sel.append('<div style="font-size:1.3em;padding:0.5em">No files in this folder.</div>');
                }
                $(data.files).each(function () {
                    DrawItem($sel,this);
                });
                $sel.append('<div style="clear:both"></div>');
                if (!mbOptions.readonly && mbOptions.createFolder)
                    $sel.append($('<div>New Folder</div>').button().bind('click',NewFolder));
                if (mbOptions.upload) {
                    var ul = $('<div></div>').hide();
                    $sel.append($('<div>Upload Files</div>').button().bind('click',{container:ul},UploadFiles));
                    $sel.append(ul);
                }
                
                // end processing
                
                $('.'+mbOptions.baseClass,$sel).disableSelection();//bind('selectstart',function () { return false; });
                $('.'+mbOptions.folderClass,$sel).bind('dblclick',ItemDblClick);
            });

            function UploadFiles(event) {
                $(event.data.container).toggle();
                if (plupload) {
                    var opts = pluploadOptions;
                    opts.url = opts.url+ (opts.url.indexOf('?') < 0 ? '?' : '&') +'path='+$sel.data('result').path;
                    opts.init = $.extend({},opts.init,{FileUploaded:function (uploader,file,response) { if (uploader.total.queued == 0) RefreshView($sel); }});

                    $(event.data.container).plupload(opts);
                } else {
                    $(event.data.container).html('Must install Plupload.');
                }
            }
            function NewFolder() {
                var path = prompt('Enter Folder Name:');
                if (!path) return;
                if ($sel.data('result').path) path = $sel.data('result').path + '/' + path;
                ReloadFolder($sel, path);
            }
        });


        function FileDropped(event,ui) {
            var from = $(ui.draggable);
            var to = $(this);

            if ($(this).hasClass(mbOptions.trashClass)) {
                if (confirm('Really delete "'+from.data('item').title+'"?  This cannot be undone')) {
                    ajaxData = {path:mbOptions.path,'delete':from.data('item').path};
                    $.ajax({url:mbOptions.ajaxPath,data:ajaxData,dataType:'script',complete:function() {
                        RefreshView(from.data('item').target);
                    }});
                }
            } else {
                return Rename(from.data('item').target,from.data('item').path,to.data('item').path+'/'+from.data('item').path);
            }
        };
        function Rename(view,from,to) {
            ajaxData = {path:mbOptions.path,mFrom:from,mTo:to};
            $.ajax({url:mbOptions.ajaxPath,data:ajaxData,dataType:'script',complete:function() {
                RefreshView(view);
            }});
        }
        function ItemDblClick() {
            var item = $(this).data('item');
            if (item.type != ICONTYPE_FOLDER) return;
            var path = item.path;
            if (item.target.data('result').path) path = item.target.data('result').path + '/' + path;
            ReloadFolder(item.target,path);
        }
        function RefreshView(target) {
            ReloadFolder(target,target.data('result').path);
        }
        function ReloadFolder(target,path) {
            target.fileManager($.extend({},mbOptions,{path:path}),pluploadOptions);
        };

        var ICONTYPE_FILE = 0;
        var ICONTYPE_FOLDER = 1;
        var ICONTYPE_TRASH = 2;
        
        function DrawItem(target, item) {
            if (item.type == ICONTYPE_FOLDER && mbOptions.fixedPath) return;
            
            item.target = $(target);
            item.fullPath = item.target.data('result').rootPath + item.target.data('result').path + '/' + item.path;
            var icon = $('<div title="'+item.title+'"></div>');
            icon.data('item',item);
            icon.addClass(mbOptions.baseClass);

            // set classes
            if (item.type == ICONTYPE_FOLDER)
                icon.addClass(mbOptions.folderClass);
            else if (item.type == ICONTYPE_TRASH)
                icon.addClass(mbOptions.trashClass);
            
            // set draggables
            if (!mbOptions.readonly) {
                if (item.type == ICONTYPE_FOLDER || item.type == ICONTYPE_TRASH)
                    icon.droppable({tolerance:'intersect',accept:'.'+mbOptions.baseClass,drop:FileDropped,hoverClass:mbOptions.hoverClass,activeClass:mbOptions.highlightClass});
                if (item.type != ICONTYPE_TRASH && item.path != '..')
                    icon.draggable({stack:'files',revert:true,zIndex:1000,opacity:0.5,scroll:false});
            }
            
            if (item.type == ICONTYPE_FILE && item.path.search(/.jpeg|.jpg|.png|.gif|.tif|.tiff/i) > -1) {
                icon.css('background-image','none');
                icon.append('<img style="width:100%;height:100%" src="'+item.fullPath+'">');
            }
            
            // events
            if (mbOptions.events) {
                $.each(mbOptions.events,function (index,value) {
                    icon.bind(index, value);
                });
            }
            icon.data('result',target.data('result'));
            
            target.append(icon);
            if (!item.path) return;

            //if (mbOptions.readonly) return;
                
            var ext = item.path.match(/\.[^.\b]*$/i);
            if (ext) ext = ext[0];
            else ext = '';
            var basename = item.path.replace(ext,'');

            var renamebox = $('<input style="position:absolute;left:-1em;bottom:-1px;right:-1em" type="text">')
                .bind('focus',function() { $(this).val(basename); })
                .bind('blur',function() { $(this).hide(); if (item.path == $(this).val()+ext) return; Rename(item.target,item.path,$(this).val()+ext); })
                .bind('keydown',function(event) { if (event.keyCode == '13' || event.keyCode == '27') $(this).blur(); })
                .hide()
                .appendTo(icon);
            var label = $('<div class="label">'+item.title+'</div>')
                .prependTo(icon)//.bind('dblclick',function() {return false;})
                .bind('click',function () {
                    if (!mbOptions.readonly) {
                        renamebox.show().focus();
                        return false;
                    }
                });
        }
        
        return $(this);
    };
})(jQuery);