"use strict";
/**
 * @class elFinder command "info". 
 * Display dialog with file properties.
 *
 * @author Dmitry (dio) Levashov, dio@std42.ru
 **/
(elFinder.prototype.commands.info = function() {
	var m   = 'msg',
		fm  = this.fm,
		spclass = 'elfinder-info-spinner',
		btnclass = 'elfinder-info-button',
		msg = {
			calc     : fm.i18n('calc'),
			size     : fm.i18n('size'),
			unknown  : fm.i18n('unknown'),
			path     : fm.i18n('path'),
			aliasfor : fm.i18n('aliasfor'),
			modify   : fm.i18n('modify'),
			perms    : fm.i18n('perms'),
			locked   : fm.i18n('locked'),
			dim      : fm.i18n('dim'),
			kind     : fm.i18n('kind'),
			files    : fm.i18n('files'),
			folders  : fm.i18n('folders'),
			roots    : fm.i18n('volumeRoots'),
			items    : fm.i18n('items'),
			yes      : fm.i18n('yes'),
			no       : fm.i18n('no'),
			link     : fm.i18n('link'),
			owner    : fm.i18n('owner'),
			group    : fm.i18n('group'),
			perm     : fm.i18n('perm'),
			getlink  : fm.i18n('getLink')
		};
		
	this.tpl = {
		main       : '<div class="ui-helper-clearfix elfinder-info-title {dirclass}"><span class="elfinder-cwd-icon {class} ui-corner-all"{style}/>{title}</div><table class="elfinder-info-tb">{content}</table>',
		itemTitle  : '<strong>{name}</strong><span class="elfinder-info-kind">{kind}</span>',
		groupTitle : '<strong>{items}: {num}</strong>',
		row        : '<tr><td>{label} : </td><td>{value}</td></tr>',
		spinner    : '<span>{text}</span> <span class="'+spclass+' '+spclass+'-{name}"/>'
	};
	
	this.alwaysEnabled = true;
	this.updateOnSelect = false;
	this.shortcuts = [{
		pattern     : 'ctrl+i'
	}];
	
	this.init = function() {
		$.each(msg, function(k, v) {
			msg[k] = fm.i18n(v);
		});
	};
	
	this.getstate = function() {
		return 0;
	};
	
	this.exec = function(hashes) {
		var files   = this.files(hashes);
		if (! files.length) {
			files   = this.files([ this.fm.cwd().hash ]);
		}
		var self    = this,
			fm      = this.fm,
			o       = this.options,
			tpl     = this.tpl,
			row     = tpl.row,
			cnt     = files.length,
			content = [],
			view    = tpl.main,
			l       = '{label}',
			v       = '{value}',
			reqs    = [],
			opts    = {
				title : this.title,
				width : 'auto',
				close : function() {
					$(this).elfinderdialog('destroy');
					$.each(reqs, function(i, req) {
						var xhr = (req && req.xhr)? req.xhr : null;
						if (xhr && xhr.state() == 'pending') {
							xhr.quiet = true;
							xhr.abort();
						}
					});
				}
			},
			count = [],
			replSpinner = function(msg, name) { dialog.find('.'+spclass+'-'+name).parent().html(msg); },
			id = fm.namespace+'-info-'+$.map(files, function(f) { return f.hash; }).join('-'),
			dialog = fm.getUI().find('#'+id),
			customActions = [],
			getSize = function(targets) {
				var getLeafRoots = function(file) {
						var targets = [];
						if (file.mime === 'directory') {
							$.each(fm.leafRoots, function(hash, roots) {
								var phash;
								if (hash === file.hash) {
									targets.push.apply(targets, roots);
								} else {
									phash = (fm.file(hash) || {}).phash;
									while(phash) {
										if (phash === file.hash) {
											targets.push.apply(targets, roots);
										}
										phash = (fm.file(phash) || {}).phash;
									}
								}
							});
						}
						return targets;
					},
					checkPhash = function(hash) {
						var dfd = $.Deferred(),
							dir = fm.file(hash),
							target = dir? dir.phash : hash;
						if (target && ! fm.file(target)) {
							fm.request({
								data : {
									cmd    : 'parents',
									target : target
								},
								preventFail : true
							}).done(function() {
								fm.one('parentsdone', function() {
									dfd.resolve();
								});
							}).fail(function() {
								dfd.resolve();
							});
						} else {
							dfd.resolve();
						}
						return dfd;
					},
					cache = function() {
						var dfd = $.Deferred(),
							cnt = Object.keys(fm.leafRoots).length;
						
						if (cnt > 0) {
							$.each(fm.leafRoots, function(hash) {
								checkPhash(hash).done(function() {
									--cnt;
									if (cnt < 1) {
										dfd.resolve();
									}
								});
							});
						} else {
							dfd.resolve();
						}
						return dfd;
					};
				
				fm.autoSync('stop');
				cache().done(function() {
					var files = [], grps = {}, dfds = [];
					
					$.each(targets, function() {
						files.push.apply(files, getLeafRoots(fm.file(this)));
					});
					targets.push.apply(targets, files);
					
					$.each(targets, function() {
						var root = fm.root(this);
						if (! grps[root]) {
							grps[root] = [ this ];
						} else {
							grps[root].push(this);
						}
					});
					
					$.each(grps, function() {
						dfds.push(fm.request({
							data : {cmd : 'size', targets : this},
							preventDefault : true
						}));
					});
					reqs.push.apply(reqs, dfds);
					
					$.when.apply($, dfds).fail(function() {
						replSpinner(msg.unknown, 'size');
					}).done(function() {
						var size = 0,
							argLen = arguments.length,
							i;
						
						for (i = 0; i < argLen; i++) {
							size += parseInt(arguments[i].size);
						}
						replSpinner(size >= 0 ? fm.formatSize(size) : msg.unknown, 'size');
					});
					
					fm.autoSync();
				});
			},
			style = '',
			size, tmb, file, title, dcnt, rdcnt, path;
			
		if (!cnt) {
			return $.Deferred().reject();
		}
			
		if (dialog.length) {
			dialog.elfinderdialog('toTop');
			return $.Deferred().resolve();
		}
		
			
		if (cnt == 1) {
			file  = files[0];
			
			if (file.icon) {
				style = ' '+fm.getIconStyle(file);
			}
			
			view  = view.replace('{dirclass}', file.csscls? fm.escape(file.csscls) : '').replace('{class}', fm.mime2class(file.mime)).replace('{style}', style);
			title = tpl.itemTitle.replace('{name}', fm.escape(file.i18 || file.name)).replace('{kind}', '<span title="'+fm.escape(file.mime)+'">'+fm.mime2kind(file)+'</span>');

			tmb = fm.tmb(file);
			
			if (!file.read) {
				size = msg.unknown;
			} else if (file.mime != 'directory' || file.alias) {
				size = fm.formatSize(file.size);
			} else {
				size = tpl.spinner.replace('{text}', msg.calc).replace('{name}', 'size');
				count.push(file.hash);
			}
			
			content.push(row.replace(l, msg.size).replace(v, size));
			file.alias && content.push(row.replace(l, msg.aliasfor).replace(v, file.alias));
			if (path = fm.path(file.hash, true)) {
				content.push(row.replace(l, msg.path).replace(v, fm.escape(path)));
			} else {
				content.push(row.replace(l, msg.path).replace(v, tpl.spinner.replace('{text}', msg.calc).replace('{name}', 'path')));
				reqs.push(fm.path(file.hash, true, {notify: null})
				.fail(function() {
					replSpinner(msg.unknown, 'path');
				})
				.done(function(path) {
					replSpinner(path, 'path');
				}));
			}
			if (file.read) {
				var href,
				name_esc = fm.escape(file.name);
				if (file.url == '1') {
					content.push(row.replace(l, msg.link).replace(v, '<button class="'+btnclass+' '+spclass+'-url">'+msg.getlink+'</button>'));
				} else {
					if (o.nullUrlDirLinkSelf && file.mime == 'directory' && file.url === null) {
						var loc = window.location;
						href = loc.pathname + loc.search + '#elf_' + file.hash;
					} else {
						href = fm.url(file.hash);
					}
					content.push(row.replace(l, msg.link).replace(v,  '<a href="'+href+'" target="_blank">'+name_esc+'</a>'));
				}
			}
			
			if (file.dim) { // old api
				content.push(row.replace(l, msg.dim).replace(v, file.dim));
			} else if (file.mime.indexOf('image') !== -1) {
				if (file.width && file.height) {
					content.push(row.replace(l, msg.dim).replace(v, file.width+'x'+file.height));
				} else {
					content.push(row.replace(l, msg.dim).replace(v, tpl.spinner.replace('{text}', msg.calc).replace('{name}', 'dim')));
					reqs.push(fm.request({
						data : {cmd : 'dim', target : file.hash},
						preventDefault : true
					})
					.fail(function() {
						replSpinner(msg.unknown, 'dim');
					})
					.done(function(data) {
						replSpinner(data.dim || msg.unknown, 'dim');
						if (data.dim) {
							var dim = data.dim.split('x');
							var rfile = fm.file(file.hash);
							rfile.width = dim[0];
							rfile.height = dim[1];
						}
					}));
				}
			}
			
			
			content.push(row.replace(l, msg.modify).replace(v, fm.formatDate(file)));
			content.push(row.replace(l, msg.perms).replace(v, fm.formatPermissions(file)));
			content.push(row.replace(l, msg.locked).replace(v, file.locked ? msg.yes : msg.no));
			file.owner && content.push(row.replace(l, msg.owner).replace(v, file.owner));
			file.group && content.push(row.replace(l, msg.group).replace(v, file.group));
			file.perm && content.push(row.replace(l, msg.perm).replace(v, fm.formatFileMode(file.perm)));
			
			// Add custom info fields
			if (o.custom) {
				$.each(o.custom, function(name, details) {
					if (
					  (!details.mimes || $.map(details.mimes, function(m){return (file.mime === m || file.mime.indexOf(m+'/') === 0)? true : null;}).length)
					    &&
					  (!details.hashRegex || file.hash.match(details.hashRegex))
					) {
						// Add to the content
						content.push(row.replace(l, fm.i18n(details.label)).replace(v , details.tpl.replace('{id}', id)));
						// Register the action
						if (details.action && (typeof details.action == 'function')) {
							customActions.push(details.action);
						}
					}
				});
			}
		} else {
			view  = view.replace('{class}', 'elfinder-cwd-icon-group');
			title = tpl.groupTitle.replace('{items}', msg.items).replace('{num}', cnt);
			dcnt  = $.map(files, function(f) { return f.mime == 'directory' ? 1 : null ; }).length;
			if (!dcnt) {
				size = 0;
				$.each(files, function(h, f) { 
					var s = parseInt(f.size);
					
					if (s >= 0 && size >= 0) {
						size += s;
					} else {
						size = 'unknown';
					}
				});
				content.push(row.replace(l, msg.kind).replace(v, msg.files));
				content.push(row.replace(l, msg.size).replace(v, fm.formatSize(size)));
			} else {
				rdcnt = $.map(files, function(f) { return f.mime === 'directory' && (! f.phash || f.isroot)? 1 : null ; }).length;
				dcnt -= rdcnt;
				content.push(row.replace(l, msg.kind).replace(v, (rdcnt === cnt || dcnt === cnt)? msg[rdcnt? 'roots' : 'folders'] : $.map({roots: rdcnt, folders: dcnt, files: cnt - rdcnt - dcnt}, function(c, t) { return c? msg[t]+' '+c : null}).join(', ')));
				content.push(row.replace(l, msg.size).replace(v, tpl.spinner.replace('{text}', msg.calc).replace('{name}', 'size')));
				count = $.map(files, function(f) { return f.hash; });
				
			}
		}
		
		view = view.replace('{title}', title).replace('{content}', content.join(''));
		
		dialog = fm.dialog(view, opts);
		dialog.attr('id', id);

		if (file && file.url == '1') {
			dialog.on('click', '.'+spclass+'-url', function(){
				$(this).parent().html(tpl.spinner.replace('{text}', fm.i18n('ntfurl')).replace('{name}', 'url'));
				fm.request({
					data : {cmd : 'url', target : file.hash},
					preventDefault : true
				})
				.fail(function() {
					replSpinner(name_esc, 'url');
				})
				.done(function(data) {
					if (data.url) {
						replSpinner('<a href="'+data.url+'" target="_blank">'+name_esc+'</a>' || name_esc, 'url');
						var rfile = fm.file(file.hash);
						rfile.url = data.url;
					} else {
						replSpinner(name_esc, 'url');
					}
				});
			});
		}

		// load thumbnail
		if (tmb) {
			$('<img/>')
				.on('load', function() { dialog.find('.elfinder-cwd-icon').addClass(tmb.className).css('background-image', "url('"+tmb.url+"')"); })
				.attr('src', tmb.url);
		}
		
		// send request to count total size
		if (count.length) {
			getSize(count);
		}
		
		// call custom actions
		if (customActions.length) {
			$.each(customActions, function(i, action) {
				try {
					action(file, fm, dialog);
				} catch(e) {
					fm.debug('error', e);
				}
			});
		}

	};
	
}).prototype = { forceLoad : true }; // this is required command
