/**
 * Copyright (C) 2009 eXo Platform SAS.
 * 
 * This is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 * 
 * This software 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 Lesser General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this software; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA, or see the FSF
 * site: http://www.fsf.org.
 */

(function($, base, common) {
	var eXoGadget = {

	  /**
		 * Create a new Gadget
		 * 
		 * @param {String}
		 *          url local or remote path that contain gadget .xml file
		 * @param {String}
		 *          id id of object contains this gadget (parent id)
		 * @param {String}
		 *          metadata contain information of gadget
		 * @param {Object}
		 *          userPref
		 * @param {String}
		 *          view type of view (home, canvas, ...)
		 * @param {boolean}
		 *          debug normal or debug mode (0, 1)
		 * @param {String}
		 *          nocache value indicate cache or nocache at shindig level (0, 1)
		 */
	  createGadget : function(url, id, metadata, userPref, view, hostName, debug,
	      nocache) {
		  window.gadgets = window.gadgets || {};
		  eXo.gadgets = window.gadgets;
		  gadgets.pubsubURL = hostName + '/js/gatein-container.js?c=1'
		      + (debug ? "&debug=1" : "") + (nocache ? "&nocache=1" : "&nocache=0");
		  var args = arguments;
		  window.require([ gadgets.pubsubURL ], function() {

			  // Make sure that 2 modules of gadget container have been loaded already
			  window.require([ "eXo.gadget.Gadgets",
			      "eXo.gadget.ExoBasedUserPrefStore" ], function() {
				  gadgets.container.setName(eXo.env.portal.containerName);
				  gadgets.container.setLanguage(eXo.core.I18n.getLanguage());
				  eXoGadget.createCallback.apply(window, args);
			  });
		  });
	  },

	  createCallback : function(url, id, metadata, userPref, view, hostName,
	      debug, nocache) {
		  var gadget;
		  if (metadata != null) {
			  // Check if gadget's height is not set and current view is canvas. By
				// default, gadget's height is 800px
			  if (metadata.modulePrefs.height == 0 && view == 'canvas') {
				  metadata.modulePrefs.height = "800px";
			  }
			  gadget = gadgets.container.createGadget({
			    specUrl : url,
			    height : metadata.modulePrefs.height,
			    secureToken : metadata.secureToken,
			    view : view
			  });
			  gadget.metadata = metadata;
		  } else {
			  gadget = gadgets.container.createGadget({
				  specUrl : url
			  });
		  }
		  gadget.parentId = id;
		  gadget.debug = debug;
		  gadget.nocache = nocache;
		  gadget.serverBase_ = hostName;

		  gadgets.container.addGadget(gadget);
		  // i use the internal var "gadget.userPrefs_" to not call the save on the
			// server side
		  if (userPref != null) {
			  gadget.userPrefs_ = userPref;
		  }
		  var gadgetBlock = document.getElementById(id);
		  gadgetBlock.innerHTML = "<div id='gadget_" + gadget.id
		      + "' class='UIGadgetContent'> </div>";
		  gadgets.container.renderGadget(gadget);
		  var uiGadget = $(gadgetBlock).closest(".uiGadget");
		  if (uiGadget.length > 0) {
			  if (metadata && metadata.modulePrefs.title != null
			      && metadata.modulePrefs.title.length > 0) {
				  uiGadget.find(".gadgetTitle").html(metadata.modulePrefs.title);
			  }
		  }
		  // setup for pubsub mechanism
		  gadgets.pubsubrouter.init(function(id) {
			  return url;
		  }, {});
	  },

	  /**
		 * Initialize data of gadget such as title, style, etc
		 * 
		 * @param {Object}
		 *          uiGadget object need to init data
		 * @param {boolean}
		 *          inDesktop use to realize UIDesktopPage or no
		 * @param {String}
		 *          metadata metadata of gadget
		 */
	  init : function(uiGadget) {
		  if (typeof (uiGadget) == "string")
			  uiGadget = document.getElementById(uiGadget);
		  var gadget = $(uiGadget);
		  var portletFrag = gadget.closest(".PORTLET-FRAGMENT");

		  if (portletFrag.length == 0) {
			  gadget.mouseover(function() {
				  $(this).find(".gadgetControl").css("visibility", "visible");
				  return false;
			  });

			  gadget.mouseout(function() {
				  $(this).find(".gadgetControl").css("visibility", "hidden").css(
				      "border", "none");
				  return false;
			  });
		  } else {
			  var gadgetControl = gadget.find(".gadgetControl").eq(0);
			  var gadgetTitle = gadgetControl.find(".gadgetTitle").eq(0);
			  gadgetControl.css("display", "block");
			  gadgetTitle.css("display", "block");
		  }

		  gadget
	          .find(".uiIconClose, .maximizeAction, .minimizeAction, .uiIconEditMini")
	          .on("mousedown touchstart", false);
		  
		  gadget.find(".uiIconClose").on("click touchstart", function() {
			  eXoGadget.deleteGadget(this);
		  });
		  gadget.find(".maximizeAction").on("click touchstart", function() {
			  eXoGadget.maximizeGadget(this);
		  });
		  gadget.find(".minimizeAction").on("click touchstart", function() {
			  eXoGadget.minimizeGadget($(this).find("i"));
		  });
		  gadget.find(".uiIconEditMini").on("click touchstart", function() {
			  eXoGadget.editGadget(gadget.attr("id"));
		  });		  
		  
		  gadget.find('*[rel=\"tooltip\"]').tooltip();

		  if (!gadget.parent().hasClass("UIPageDesktop")) {
			  gadget.css("width", "auto");
		  } else {
			  gadget.css("position", "absolute");
			  var dragArea = gadget.find("div.GadgetDragHandleArea")[0];
			  if (gadget.css("z-index") < 0) {
				  gadget.css("z-index", "0");
			  }
			  common.DragDrop.init(dragArea, uiGadget);

			  var desktopPage = $("#UIPageDesktop");
			  var offsetHeight = desktopPage.offsetHeight - uiGadget.offsetHeight;
			  var offsetWidth = desktopPage.offsetWidth - uiGadget.offsetWidth;
			  var dragPosX = uiGadget.offsetLeft;
			  var dragPosY = uiGadget.offsetTop;

			  if (dragPosX < 0) {
				  uiGadget.style.left = "0px";
			  }
			  if (dragPosY < 0) {
				  uiGadget.style.top = "0px";
			  }
			  if (dragPosY > offsetHeight) {
				  uiGadget.style.top = offsetHeight + "px";
			  }
			  if (dragPosX > offsetWidth) {
				  uiGadget.style.left = offsetWidth + "px";
			  }

			  // drag start callback
			  uiGadget.onDragStart = function(x, y, lastMouseX, lastMouseY, e) {
				  desktopPage.children(".uiGadget").each(function() {
					  var mask = $(this).find(".uiMask").eq(0);
					  if (mask) {
						  var c = $(this).find("div.gadgets-gadget-content")[0];
						  mask.css({
						    "marginTop" : -c.offsetHeight + "px",
						    "height" : c.offsetHeight + "px",
						    "width" : c.offsetWidth + "px",
						    "backgroundColor" : "white",
						    "display" : "block"
						  });
						  mask.fadeTo(0, 0.03);
					  }
				  });

			  };

			  // drag callback
			  uiGadget.onDrag = function(nx, ny, ex, ey, e) {
				  if (nx < 0) {
					  uiGadget.style.left = "0px";
				  }
				  if (ny < 0) {
					  uiGadget.style.top = "0px";
				  }
			  };

			  // drop callback
			  uiGadget.onDragEnd = function(x, y, clientX, clientY) {
				  desktopPage.children(".uiGadget").each(function() {
					  var mask = $(this).find(".uiMask").eq(0);
					  if (mask) {
						  mask.css("display", "none");
					  }
				  });

				  var offsetHeight = desktopPage[0].offsetHeight
				      - uiGadget.offsetHeight;
				  var offsetWidth = desktopPage[0].offsetWidth - uiGadget.offsetWidth;
				  var dragPosX = uiGadget.offsetLeft;
				  var dragPosY = uiGadget.offsetTop;

				  if (dragPosX < 0) {
					  uiGadget.style.left = "0px";
				  }
				  if (dragPosY < 0) {
					  uiGadget.style.top = "0px";
				  }
				  if (dragPosY > offsetHeight) {
					  uiGadget.style.top = offsetHeight + "px";
				  }
				  if (dragPosX > offsetWidth) {
					  uiGadget.style.left = offsetWidth + "px";
				  }
				  eXoGadget.saveWindowProperties(uiGadget);
			  };
		  }
	  },

	  /**
		 * Use to edit some information of gadget such as nocache, debug, etc
		 * 
		 * @param {String}
		 *          id identifier of gadget
		 */
	  editGadget : function(id) {
		  var tempId = $("#" + id).find("iframe.gadgets-gadget").attr("id").split(
		      '_')[2];
		  gadgets.container.getGadget(tempId).handleOpenUserPrefsDialog();
	  },

	  /**
		 * Minimize a gadget
		 * 
		 * @param {Object}
		 *          icon object to minimize
		 */
	  minimizeGadget : function(icon) {
		  var minIcon = $(icon);
		  var gadget = minIcon.closest(".uiGadget");
		  var portletFrag = gadget.closest(".PORTLET-FRAGMENT");
		  if (portletFrag.length == 0) {
			  return;
		  }

		  var gadgetApp = gadget.find(".gadgetApplication");
		  var minimized = gadgetApp.css("display") != "none";
		  if (minimized) {
			  gadgetApp.css("display", "none");
			  minIcon.removeClass("uiIconMinimize").addClass("uiIconArrowDown");
			  minIcon.attr("title", minIcon.attr("unminiTitle"));
		  } else {
			  gadgetApp.css("display", "block");
			  minIcon.removeClass("uiIconArrowDown").addClass("uiIconMinimize");
			  minIcon.attr("title", minIcon.attr("miniTitle"));
		  }

		  var portletID = portletFrag.parent().attr("id");
		  var dashboardID = gadget.closest(".UIDashboard").attr("id");
		  var href = eXo.env.server.portalBaseURL + "?portal:componentId="
		      + portletID;
		  href += "&portal:type=action&uicomponent=" + dashboardID;
		  href += "&op=MinimizeGadget";
		  href += "&minimized=" + minimized;
		  href += "&objectId=" + gadget.attr("id") + "&ajaxRequest=true";
		  ajaxGet(href);

		  // TODO: Examine if this is really useful
		  if (gadget[0].minimizeCallback) {
			  gadget[0].minimizeCallback(portletID);
		  }
	  },

	  /**
		 * Maximize a gadget
		 * 
		 * @param {Object}
		 *          icon object to maximize
		 */
	  maximizeGadget : function(icon) {
		  var maxIcon = $(icon);
		  var gadget = maxIcon.closest(".uiGadget");
		  var portletFrag = gadget.closest(".PORTLET-FRAGMENT");
		  if (portletFrag.length == 0) {
			  return;
		  }
		  var portletID = portletFrag.parent().attr("id");
		  var dashboardID = gadget.closest(".UIDashboard").attr("id");
		  var maximizeParam = gadget.closest(".UIDashboardContainer").length > 0 ? "maximize"
		      : "unmaximize";
		  var href = eXo.env.server.portalBaseURL + "?portal:componentId="
		      + portletID;
		  href += "&portal:type=action&uicomponent=" + dashboardID;
		  href += "&op=MaximizeGadget";
		  href += "&maximize=" + maximizeParam;
		  href += "&objectId=" + gadget.attr("id") + "&ajaxRequest=true";
		  ajaxGet(href, true);
	  },

	  /**
		 * Delete a gadget from UI and database
		 * 
		 * @param {Object}
		 *          selectedElement object to delete
		 */
	  deleteGadget : function(icon) {
		  var closeIcon = $(icon);
		  var gadget = closeIcon.closest(".uiGadget");
		  var portletFrag = gadget.closest(".PORTLET-FRAGMENT");

		  if (portletFrag.length > 0) {
			  var portletID = portletFrag.parent().attr("id");
			  var dashboardID = gadget.closest(".UIDashboard").attr("id");

			  if (confirm("${GadgetDeletionConfirmation}")) {
				  var href = eXo.env.server.portalBaseURL + "?portal:componentId="
				      + portletID;
				  href += "&portal:type=action&uicomponent=" + dashboardID;
				  href += "&op=DeleteGadget";
				  href += "&objectId=" + gadget.attr("id") + "&ajaxRequest=true";

				  var dashboardCont = gadget.closest(".UIDashboardContainer");
				  if (dashboardCont.length > 0) {
					  ajaxGet(href);
					  gadget.remove();
					  if (dashboardCont.find(".uiGadget").length == 0) {
						  dashboardCont.find("div.NoGadget").css("display", "block");
					  }
				  } else {
					  // Delete maximized gadget
					  ajaxGet(href);
				  }
			  }
		  } else {
			  // Code used for desktop page
			  var blockID = closeIcon.closest(".UIPage").find("div.id").html();
			  if (confirm("${GadgetDeletionConfirmation}")) {
				  var params = [ {
				    name : "objectId",
				    value : gadget.attr("id")
				  } ];
				  var result = ajaxAsyncGetRequest(eXo.env.server.createPortalURL(
				      blockID, "DeleteGadget", true, params), false);
				  if (result == "OK") {
					  gadget.remove();
				  }
			  }
		  }
	  },

	  /**
		 * Save Window information of gadget instance (x, y, z axis, etc)
		 * 
		 * @param {Object}
		 *          object Gadget object
		 */
	  saveWindowProperties : function(object) {
		  var gadget = $(object);
		  var blockID = gadget.closest(".UIPage").find("div.id").html();
		  var params = [ {
		    name : "objectId",
		    value : object.id
		  }, {
		    name : "posX",
		    value : object.offsetLeft
		  }, {
		    name : "posY",
		    value : object.offsetTop
		  }, {
		    name : "zIndex",
		    value : object.style.zIndex
		  } ];
		  ajaxAsyncGetRequest(eXo.env.server.createPortalURL(blockID,
		      "SaveGadgetProperties", true, params), false);
	  },

	  /**
		 * Resize height of parent portlet to full height of browser
		 * 
		 * @param componentId
		 *          a component is child of portlet
		 */
	  resizeFullHeight : function(componentId) {
		  var portletFrag = $("#" + componentId).closest(".PORTLET-FRAGMENT");
		  base.Browser.fillUpFreeSpace(portletFrag[0]);
	  }
	};

	return {
		UIGadget : eXoGadget
	};
})($, base, common);