/**
 * File Manager plugin for jWYSIWYG
 * 
 * Yotam Bar-On, 2011
 * 
 * The file manager ui uses the Silk icon set from FAMFAMFAM
 * 
 */

(function ($) {
	"use strict";

	if (undefined === $.wysiwyg) {
		throw "wysiwyg.fileManager.js depends on $.wysiwyg";
	}

	/*
	 * Wysiwyg namespace: public properties and methods
	 */
	// Only for show
	var fileManager = {
		name: "fileManager",
		version: "0.98", // Same as jwysiwyg
		ajaxHandler: "",
		selected: null,
		setAjaxHandler: function (_handler) {
			this.ajaxHandler = _handler;
			this.ready = true;

			return this;
		},
		ready: false,
		init: function (callback) {
			if (this.ready) {
				var manager = new fileManagerObj(this.ajaxHandler);
				manager.load(callback);
			} else {
				console.log("$.wysiwyg.fileManager: Must set ajax handler first, using $.wysiwyg.fileManager.setAjaxHandler()");
				return false;
			}
		}
	};

	// Register:
	$.wysiwyg.plugin.register(fileManager);

	// Private object:
	function fileManagerObj(_handler) {
		this.handler = _handler;
		this.loaded = false;
		this.move = false;
		this.rename = false;
		this.remove = false;
		this.upload = false;
		this.mkdir = false;
		this.selectedFile = "";
		this.curDir = "/";
		this.curListHtml = "";
		this.dialog = null;

		/**
		 * Methods
		 */
		var console = $.wysiwyg.console;
		console.log("handler: " + this.handler);

		this.load = function (callback) {
			var self = this;
			self.loaded = true;
			self.authenticate(function (response) {
				if (response !== "success") {
					var dialog = new $.wysiwyg.dialog(null, {
						"title"   : "Error",
						"content" : response
					});
					dialog.open();

					return false;
				}

				// Wrap the file list:
				var uiHtml = '<div class="wysiwyg-files-wrapper">' +
								'<input type="text" name="url" />' +
								'<div id="wysiwyg-files-list-wrapper"></div>';

				// If handler does not support upload, icon will not appear:
				if (self.upload.enabled) {
					uiHtml += '<div class="wysiwyg-files-action-upload" title="{{upload_action}}"></div>';
				}

				// If handler does not support mkdir, icon will not appear:
				if (self.mkdir.enabled) {
					uiHtml += '<div class="wysiwyg-files-action-mkdir" title="{{mkdir_action}}"></div>';
				}

				uiHtml += '<input style="display:none;" type="button" name="submit" value="{{select}}" />' +
							'</div>';

				uiHtml = self.i18n(uiHtml);
				if ($.wysiwyg.dialog) {
					// Support for native $.wysiwyg.dialog()
					var _title = self.i18n("{{file_manager}}");
					var fileManagerUI = new $.wysiwyg.dialog(_handler, {
						"title": _title,
						"content": uiHtml,
						"close": function (e, dialog) {
							self.dialog = null;
						},
						"open": function (e, dialog) {

							self.dialog = dialog;

							self.loadDir();
							self.bindHover();
							self.bindBrowse();

							// Select file bindings
							dialog.find("input[name=submit]").bind("click", function () {
								var file = dialog.find("input[name=url]").val();
								fileManagerUI.close();
								self.loaded = false;
								callback(file);
							});

							// Create Directory
							$(".wysiwyg-files-action-mkdir").bind("click", function (e) {
								e.preventDefault();
								var uiHtml = '<div>' +
												'<input type="text" class="wysiwyg-files-textfield" name="newName" value="{{new_directory}}" />' +
												'<input type="button" name="cancel" value="{{cancel}}" />' +
												'<input type="button" name="create" value="{{create}}" />' +
												'</div>';
								uiHtml = self.i18n(uiHtml);
								var _mkdirTitle = self.i18n("{{mkdir_title}}");
								var mkdirDialog = new $.wysiwyg.dialog(null, {
									"title": _mkdirTitle,
									"content": uiHtml,
									"close": function () {

									},
									"open": function (e, _dialog) {
										_dialog.find("input[name=create]").bind("click", function () {
											self.mkDir(_dialog.find("input[name=newName]").val(), function (response) {
												self.loadDir();
												mkdirDialog.close();
											});
										});

										_dialog.find("input[name=cancel]").bind("click", function () {
											mkdirDialog.close();
										});
									}
								});
								mkdirDialog.open();
							});

							// Upload File
							$(".wysiwyg-files-action-upload").bind("click", function (e) {
								self.loadUploadUI();
							});

						},
						"modal": false
						// "theme": "jqueryui"
					});

					fileManagerUI.open();

				} else {
					// If $.wysiwyg.dialog() does not work..
					console.error("$.wysiwyg.fileManager: This plugin uses the native dialog system of jWYSIWYG. Make sure you are using version > 0.98");
				}
			});
		};

		this.authenticate = function (callback) {
			if (!this.loaded) {
				return false;
			}
			var self = this;
			$.getJSON(self.handler, { "action": "auth", "auth": "jwysiwyg" }, function (json, textStatus) {
				if (json.success) {
					self.move = json.data.move;
					self.rename = json.data.rename;
					self.remove = json.data.remove;
					self.mkdir = json.data.mkdir;
					self.upload = json.data.upload;
					callback("success");
				} else {
					callback(json.error + "\n<br>$.wysiwyg.fileManager: Unable to authenticate handler.");
				}
			});
		};

		this.loadDir = function () {
			if (!this.loaded) {
				return false;
			}
			var self = this;
			self.curDir = self.curDir.replace(/\/$/, '') + '/';

			// Retreives list of files inside a certain directory:
			$.getJSON(self.handler, { "dir": self.curDir, "action": "list" }, function (json) {
				if (json.success) {
					self.dialog.find("#wysiwyg-files-list-wrapper").removeClass("wysiwyg-files-ajax").html(self.listDir(json));
					self.bindHover();
					self.bindBrowse();
				} else {
					alert(json.error);
				}
			});
		};

		/**
		 * Ajax Methods.
		 */

		// List Directory
		this.listDir = function (json) {
			if (!this.loaded) {
				return false;
			}
			var self = this;
			var treeHtml = '<ul class="wysiwyg-files-list">';
			if (self.curDir !== "/") {
				var prevDir = self.curDir.replace(/[^\/]+\/?$/, '');
				treeHtml += '<li class="wysiwyg-files-dir wysiwyg-files-dir-prev">' +
							'<a href="#" rel="' + prevDir + '" title="{{previous_directory}}">' +
							self.curDir +
							'</a></li>';
			}
			$.each(json.data.directories, function (name, dirPath) {
				treeHtml += '<li class="wysiwyg-files-dir">' +
							'<a href="#" rel="' + dirPath + '">' +
							name +
							'</a></li>';
			});
			$.each(json.data.files, function (name, url) {
				var ext = name.replace(/^.*?\./, '').toLowerCase();
				treeHtml += '<li class="wysiwyg-files-file wysiwyg-files-' + ext + '">' +
							'<a href="#" rel="' + url + '">' +
							name +
							'</a></li>';
			});
			treeHtml += '</ul>';

			return self.i18n(treeHtml);
		};

/**
 * Should be remembered for future implementation:
 * If handler does not support certain actions - do not show their icons/button.
 * Only action a handler MUST support is "list" (list directory).
 * 
 * Implemented: 28-May-2011, Yotam Bar-On
 */

		// Remove File Method:
		this.removeFile = function (type, callback) {
			if (!this.loaded) { return false; }
			if (!this.remove.enabled) { console.log("$.wysiwyg.fileManager: handler: remove is disabled."); return false; }

			var self = this;
			$.getJSON(self.remove.handler, { "action": "remove", "type": type, "dir": self.curDir, "file": self.selectedFile  }, function (json) {
				if (json.success) {
					alert(json.data);
				} else {
					alert(json.error);
				}
				callback(json);
			});
		};

		// Rename File Method
		this.renameFile = function (type, newName, callback) {
			if (!this.loaded) { return false; }
			if (!this.rename.enabled) { console.log("$.wysiwyg.fileManager: handler: rename is disabled."); return false; }

			var self = this;
			$.getJSON(self.rename.handler, { "action": "rename", "type": type, "dir": self.curDir, "file": self.selectedFile, "newName": newName  }, function (json) {
				if (json.success) {
					alert(json.data);
				} else {
					alert(json.error);
				}
				callback(json);
			});
		};

		// Make Directory Method
		this.mkDir = function (newName, callback) {
			if (!this.loaded) { return false; }
			if (!this.mkdir.enabled) { console.log("$.wysiwyg.fileManager: handler: mkdir is disabled."); return false; }

			var self = this;
			$.getJSON(self.mkdir.handler, { "action": "mkdir", "dir": self.curDir, "newName": newName  }, function (json) {
				if (json.success) {
					alert(json.data);
				} else {
					alert(json.error);
				}
				callback(json);
			});
		};

		/**
		 * Currently we will not support moving of files. This will be supported only when a more interactive interface will be introduced.
		 */
		this.moveFile = function () {
			if (!this.loaded) {
				return false;
			}
			if (!this.move.enabled) {
				console.log("$.wysiwyg.fileManager: handler: move is disabled."); return false;
			}
			var self = this;
			return false;
		};

		// Upload:
		this.loadUploadUI = function () {
			if (!this.loaded) { return false; }
			if (!this.upload.enabled) { console.log("$.wysiwyg.fileManager: handler: move is disabled."); return false; }
			var self = this;
			var uiHtml = '<form enctype="multipart/form-data" method="post" action="' + self.upload.handler + '">' +
							'<p><input type="file" name="handle" /><br>' +
							'<input type="text" name="newName" style="width:250px; border:solid 1px !important;" /><br>' +
							'<input type="text" name="action" style="display:none;" value="upload" /><br></p>' +
							'<input type="text" name="dir" style="display:none;" value="' + self.curDir + '" /></p>' +
							'<input type="submit" name="submit" value="{{submit}}" />' +
							'</form>';
			uiHtml = self.i18n(uiHtml);

			var _uploadTitle = self.i18n("{{upload_title}}");

			var dialog = new $.wysiwyg.dialog(null, {
				"title": _uploadTitle,
				"content": "",
				"open": function (e, _dialog) {

					$("<iframe/>", { "class": "wysiwyg-files-upload" }).load(function () {
						var $doc = $(this).contents();
						$doc.find("body").append(uiHtml);
						$doc.find("input[type=file]").change(function () {
							var $val = $(this).val();
							$val = $val.replace(/.*[\\\/]/, '');
							// Should implement validation of extensions before submitting form
							$doc.find("input[name=newName]").val($val);
						});

					}).appendTo(_dialog.find(".wysiwyg-dialog-content"));

				},
				"close": function () {
					self.loadDir();
				}
			});

			dialog.open();
		};

		/**
		 * i18n Support.
		 * The below methods will enable basic support for i18n
		 */

		// Default translations (EN):
		this.defaultTranslations = {
			"file_manager": 		"File Manager",
			"upload_title":			"Upload File",
			"rename_title":			"Rename File",
			"remove_title":			"Remove File",
			"mkdir_title":			"Create Directory",
			"upload_action": 		"Upload new file to current directory",
			"mkdir_action": 		"Create new directory",
			"remove_action": 		"Remove this file",
			"rename_action": 		"Rename this file",
			"delete_message": 		"Are you sure you want to delete this file?",
			"new_directory": 		"New Directory",
			"previous_directory": 	"Go to previous directory",
			"rename":				"Rename",
			"select": 				"Select",
			"create": 				"Create",
			"submit": 				"Submit",
			"cancel": 				"Cancel",
			"yes":					"Yes",
			"no":					"No"
		};
		/** 
		 * Take an html string with placeholders: {{placeholder}} and translate it. 
		 * It takes all labels and trys to translate them. 
		 * If there is no translation (or i18n plugin is not loaded) it will use the defaults.
		 */
		this.i18n = function (tHtml) {
			var map = this.defaultTranslations;
			// If i18n plugin exists:
			if ($.wysiwyg.i18n) {
				$.each(map, function (key, val) {
					map[key] = $.wysiwyg.i18n.t(key, "dialogs.fileManager");
				});
			}

			$.each(map, function (key, val) {
				tHtml = tHtml.replace("{{" + key + "}}", val);
			});

			return tHtml;
		};

		/**
		 * BINDINGS FOR ELEMENTS
		 * The below methods are bind methods for elements inside the File Manager's dialogs.
		 * Their purpose is to enable simple coding of the dialog interfaces,
		 * and to make the use of "live" deprecated.
		 */

		this.bindHover = function () {
			var self = this,
				dialog = self.dialog,
				object = dialog.find("li");

			/** 
			 * HOVER + ACTIONS BINDINGS:
			 */
			object.bind("mouseenter", function () {
				$(this).addClass("wysiwyg-files-hover");

				if ($(this).hasClass("wysiwyg-files-dir")) {
					$(this).addClass("wysiwyg-files-dir-expanded");
				}

				// Add action buttons:
				if (!$(this).hasClass("wysiwyg-files-dir-prev")) {

					$(".wysiwyg-files-action").remove();

					// If handler does not support remove, icon will not appear:
					if (self.remove.enabled) {
						var rmText = self.i18n("{{remove_action}}");
						$("<div/>", { "class": "wysiwyg-files-action wysiwyg-files-action-remove", "title": rmText }).appendTo(this);

						// "Remove" binding:
						$(".wysiwyg-files-action-remove").bind("click", function (e) {
							e.preventDefault();
							var entry = $(this).parent("li");
							// What are we deleting?
							var type = entry.hasClass("wysiwyg-files-file") ? "file" : "dir";
							var uiHtml = 	"<p>{{delete_message}}</p>" +
											'<div class="">' +
											'<input type="button" name="cancel" value="{{no}}" />' +
											'<input type="button" name="remove" value="{{yes}}" />' +
											"</div>";
							uiHtml = self.i18n(uiHtml);

							var _removeTitle = self.i18n("{{remove_title}}");

							var removeDialog = 	new $.wysiwyg.dialog(null, {
								"title": _removeTitle,
								"content": uiHtml,
								"close": function () {

								},
								"open": function (e, _dialog) {
									_dialog.find("input[name=remove]").bind("click", function () {
										self.selectedFile = entry.find("a").text();
										self.removeFile(type, function (response) {
											self.loadDir();
											removeDialog.close();
										});
									});

									_dialog.find("input[name=cancel]").bind("click", function () {
										removeDialog.close();
									});
								}
							});

							removeDialog.open();
						});
					}

					// If handler does not support rename, icon will not appear:
					if (self.rename.enabled) {
						var rnText = self.i18n("{{rename_action}}");
						$("<div/>", { "class": "wysiwyg-files-action wysiwyg-files-action-rename", "title": rnText }).appendTo(this);

						// "Rename" binding:
						$(".wysiwyg-files-action-rename").bind("click", function (e) {
							e.preventDefault();
							var entry = $(this).parent("li");
							// What are we deleting?
							var type = entry.hasClass("wysiwyg-files-file") ? "file" : "dir";
							var uiHtml = 	'<div>' +
											'<input type="text" class="wysiwyg-files-textfield" name="newName" value="' + entry.find("a").text() + '" />' +
											'<input type="button" name="cancel" value="{{cancel}}" />' +
											'<input type="button" name="rename" value="{{rename}}" />' +
											'</div>';
							uiHtml = self.i18n(uiHtml);
							var _renameTitle = self.i18n("{{rename_title}}");

							var renameDialog = new $.wysiwyg.dialog(null, {
								"title": _renameTitle,
								"content": uiHtml,
								"close": function () {

								},
								"open": function (e, _dialog) {
									_dialog.find("input[name=rename]").bind("click", function () {
										self.selectedFile = entry.find("a").text();
										self.renameFile(type, _dialog.find("input[name=newName]").val(), function (response) {
											self.loadDir();
											renameDialog.close();
										});
									});

									_dialog.find("input[name=cancel]").bind("click", function () {
										renameDialog.close();
									});
								}
							});

							renameDialog.open();
						});
					}
				}
			}).bind("mouseleave", function () {
				$(this).removeClass("wysiwyg-files-dir-expanded");
				$(this).removeClass("wysiwyg-files-hover");

				// Remove action buttons:
				$(".wysiwyg-files-action").remove();
			});
		};

		/**
		 * BROWSING BINDINGS
		 */
		this.bindBrowse = function () {
			var self = this,
				dialog = self.dialog,
				object = self.dialog.find("li").find("a");

			// Browse:
			object.bind("click", function (e) {
				$(".wysiwyg-files-wrapper").find("li").css("backgroundColor", "#FFF");

				// Browse Directory:
				if ($(this).parent("li").hasClass("wysiwyg-files-dir")) {
					self.selectedFile = $(this).attr("rel");
					self.curDir = $(this).attr("rel");
					dialog.find("input[name=submit]").hide();
					$(".wysiwyg-files-wrapper").find("input[name=url]").val("");
					$('#wysiwyg-files-list-wrapper').addClass("wysiwyg-files-ajax");
					$('#wysiwyg-files-list-wrapper').html("");
					self.loadDir();
					dialog.find("input[name=submit]").hide();

				// Select Entry:
				} else {
					self.selectedFile = $(this).text();
					$(this).parent("li").css("backgroundColor", "#BDF");
					$(".wysiwyg-files-wrapper").find("input[name=url]").val($(this).attr("rel"));
					dialog.find("input[name=submit]").show();
				}
			});
		};

		this.bindPreview = function (object) {
			var self = this;
		};
	}
})(jQuery);