/** Modified from original Node-Red source, for audio system visualization
 * vim: set ts=4:
 * Copyright 2013 IBM Corp.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 **/
RED.library = (function() {
	
	
	function loadFlowLibrary() {
		$.getJSON("library/flows",function(data) {
			//console.log(data);

			var buildMenu = function(data,root) {
				var i;
				var li;
				var a;
				var ul = document.createElement("ul");
				ul.className = "dropdown-menu";
				if (data.d) {
					for (i in data.d) {
						if (data.d.hasOwnProperty(i)) {
							li = document.createElement("li");
							li.className = "dropdown-submenu pull-left";
							a = document.createElement("a");
							a.href="#";
							a.innerHTML = i;
							li.appendChild(a);
							li.appendChild(buildMenu(data.d[i],root+(root!==""?"/":"")+i));
							ul.appendChild(li);
						}
					}
				}
				if (data.f) {
					for (i in data.f) {
						if (data.f.hasOwnProperty(i)) {
							li = document.createElement("li");
							a = document.createElement("a");
							a.href="#";
							a.innerHTML = data.f[i];
							a.flowName = root+(root!==""?"/":"")+data.f[i];
							a.onclick = function() {
								$.get('library/flows/'+this.flowName, function(data) {
										RED.view.importNodes(data);
								});
							};
							li.appendChild(a);
							ul.appendChild(li);
						}
					}
				}
				return ul;
			};
			var menu = buildMenu(data,"");
			$("#flow-menu-parent>ul").replaceWith(menu);
		});
	}
	loadFlowLibrary();


	
	function createUI(options) {
		var libraryData = {};
		var selectedLibraryItem = null;
		var libraryEditor = null;
		
		function buildFileListItem(item) {
			var li = document.createElement("li");
			li.onmouseover = function(e) { $(this).addClass("list-hover"); };
			li.onmouseout = function(e) { $(this).removeClass("list-hover"); };
			return li;
		}
		
		function buildFileList(root,data) {
			var ul = document.createElement("ul");
			var li;
			for (var i=0;i<data.length;i++) {
				var v = data[i];
				if (typeof v === "string") {
					// directory
					li = buildFileListItem(v);
					li.onclick = (function () {
						var dirName = v;
						return function(e) {
							var bcli = $('<li class="active"><span class="divider">/</span> <a href="#">'+dirName+'</a></li>');
							$("a",bcli).click(function(e) { 
								$(this).parent().nextAll().remove();
								$.getJSON("library/"+options.url+root+dirName,function(data) {
									$("#node-select-library").children().first().replaceWith(buildFileList(root+dirName+"/",data));
								});
								e.stopPropagation();
							});
							var bc = $("#node-dialog-library-breadcrumbs");
							$(".active",bc).removeClass("active");
							bc.append(bcli);
							$.getJSON("library/"+options.url+root+dirName,function(data) {
									$("#node-select-library").children().first().replaceWith(buildFileList(root+dirName+"/",data));
							});
						}
					})();
					li.innerHTML = '<i class="icon-folder-close"></i> '+v+"</i>";
					ul.appendChild(li);
				} else {
					// file
				   li = buildFileListItem(v);
				   li.innerHTML = v.name;
				   li.onclick = (function() {
					   var item = v;
					   return function(e) {
						   $(".list-selected",ul).removeClass("list-selected");
						   $(this).addClass("list-selected");
						   $.get("library/"+options.url+root+item.fn, function(data) {
								   console.log(data);
								   selectedLibraryItem = item;
								   libraryEditor.setText(data);
						   });
					   }
				   })();
				   ul.appendChild(li);
				}
			}
			return ul;
		}
	
		$('#node-input-name').addClass('input-append-left').css("width","65%").after(
			'<div class="btn-group" style="margin-left: -5px;">'+
			'<button id="node-input-'+options.type+'-lookup" class="btn input-append-right" data-toggle="dropdown"><i class="icon-book"></i> <span class="caret"></span></button>'+
			'<ul class="dropdown-menu pull-right" role="menu">'+
			'<li><a id="node-input-'+options.type+'-menu-open-library" tabindex="-1" href="#">Open Library...</a></li>'+
			'<li><a id="node-input-'+options.type+'-menu-save-library" tabindex="-1" href="#">Save to Library...</a></li>'+
			'</ul></div>'
		);
	
		
		
		$('#node-input-'+options.type+'-menu-open-library').click(function(e) {
			$("#node-select-library").children().remove();
			var bc = $("#node-dialog-library-breadcrumbs");
			bc.children().first().nextAll().remove();
			libraryEditor.setText('');
			
			$.getJSON("library/"+options.url,function(data) {
				$("#node-select-library").append(buildFileList("/",data));
				$("#node-dialog-library-breadcrumbs a").click(function(e) {
					$(this).parent().nextAll().remove();
					$("#node-select-library").children().first().replaceWith(buildFileList("/",data));
					e.stopPropagation();
				});
				$( "#node-dialog-library-lookup" ).dialog( "open" );
			});
			
			e.preventDefault();
		});
	
		$('#node-input-'+options.type+'-menu-save-library').click(function(e) {
			//var found = false;
			var name = $("#node-input-name").val().replace(/(^\s*)|(\s*$)/g,"");

			//var buildPathList = function(data,root) {
			//    var paths = [];
			//    if (data.d) {
			//        for (var i in data.d) {
			//            var dn = root+(root==""?"":"/")+i;
			//            var d = {
			//                label:dn,
			//                files:[]
			//            };
			//            for (var f in data.d[i].f) {
			//                d.files.push(data.d[i].f[f].fn.split("/").slice(-1)[0]);
			//            }
			//            paths.push(d);
			//            paths = paths.concat(buildPathList(data.d[i],root+(root==""?"":"/")+i));
			//        }
			//    }
			//    return paths;
			//};
			$("#node-dialog-library-save-folder").attr("value","");

			var filename = name.replace(/[^\w-]/g,"-");
			if (filename === "") {
				filename = "unnamed-"+options.type;
			}
			$("#node-dialog-library-save-filename").attr("value",filename+".js");

			//var paths = buildPathList(libraryData,"");
			//$("#node-dialog-library-save-folder").autocomplete({
			//        minLength: 0,
			//        source: paths,
			//        select: function( event, ui ) {
			//            $("#node-dialog-library-save-filename").autocomplete({
			//                    minLength: 0,
			//                    source: ui.item.files
			//            });
			//        }
			//});

			$( "#node-dialog-library-save" ).dialog( "open" );
			e.preventDefault();
		});
	
		require(["orion/editor/edit"], function(edit) {
			libraryEditor = edit({
				parent:document.getElementById('node-select-library-text'),
				lang:"js",
				readonly: true
			});
		});
	
		
		$( "#node-dialog-library-lookup" ).dialog({
			title: options.type+" library",
			modal: true,
			autoOpen: false,
			width: 800,
			height: 450,
			buttons: [
				{
					text: "Ok",
					click: function() {
						if (selectedLibraryItem) {
							for (var i=0;i<options.fields.length;i++) {
								var field = options.fields[i];
								$("#node-input-"+field).val(selectedLibraryItem[field]);
							}
							options.editor.setText(libraryEditor.getText());
						}
						$( this ).dialog( "close" );
					}
				},
				{
					text: "Cancel",
					click: function() {
						$( this ).dialog( "close" );
					}
				}
			],
			open: function(e) {
				var form = $("form",this);
				form.height(form.parent().height()-30);
				$("#node-select-library-text").height("100%");
				$(".form-row:last-child",form).children().height(form.height()-60);
			},
			resize: function(e) {
				var form = $("form",this);
				form.height(form.parent().height()-30);
				$(".form-row:last-child",form).children().height(form.height()-60);
			}
		});
		
		function saveToLibrary(overwrite) {
			var name = $("#node-input-name").val().replace(/(^\s*)|(\s*$)/g,"");
			if (name === "") {
				name = "Unnamed "+options.type;
			}
			var filename = $("#node-dialog-library-save-filename").val().replace(/(^\s*)|(\s*$)/g,"");
			var pathname = $("#node-dialog-library-save-folder").val().replace(/(^\s*)|(\s*$)/g,"");
			if (filename === "" || !/.+\.js$/.test(filename)) {
				RED.notify("Invalid filename","warning");
				return;
			}
			var fullpath = pathname+(pathname===""?"":"/")+filename;
			if (!overwrite) {
				//var pathnameParts = pathname.split("/");
				//var exists = false;
				//var ds = libraryData;
				//for (var pnp in pathnameParts) {
				//    if (ds.d && pathnameParts[pnp] in ds.d) {
				//        ds = ds.d[pathnameParts[pnp]];
				//    } else {
				//        ds = null;
				//        break;
				//    }
				//}
				//if (ds && ds.f) {
				//    for (var f in ds.f) {
				//        if (ds.f[f].fn == fullpath) {
				//            exists = true;
				//            break;
				//        }
				//    }
				//}
				//if (exists) {
				//    $("#node-dialog-library-save-type").html(options.type);
				//    $("#node-dialog-library-save-name").html(fullpath);
				//    $("#node-dialog-library-save-confirm").dialog( "open" );
				//    return;
				//}
			}
			var queryArgs = [];
			for (var i=0;i<options.fields.length;i++) {
				var field = options.fields[i];
				if (field == "name") {
					queryArgs.push("name="+encodeURIComponent(name));
				} else {
					queryArgs.push(encodeURIComponent(field)+"="+encodeURIComponent($("#node-input-"+field).val()));
				}
			}
			var queryString = queryArgs.join("&");
			
			var text = options.editor.getText();
			$.post("library/"+options.url+'/'+fullpath+"?"+queryString,text,function() {
					RED.notify("Saved "+options.type,"success");
			});
		}
		$( "#node-dialog-library-save-confirm" ).dialog({
			title: "Save to library",
			modal: true,
			autoOpen: false,
			width: 530,
			height: 230,
			buttons: [
				{
					text: "Ok",
					click: function() {
						saveToLibrary(true);
						$( this ).dialog( "close" );
					}
				},
				{
					text: "Cancel",
					click: function() {
						$( this ).dialog( "close" );
					}
				}
			]
		});
		$( "#node-dialog-library-save" ).dialog({
			title: "Save to library",
			modal: true,
			autoOpen: false,
			width: 530,
			height: 230,
			buttons: [
				{
					text: "Ok",
					click: function() {
						saveToLibrary(false);
						$( this ).dialog( "close" );
					}
				},
				{
					text: "Cancel",
					click: function() {
						$( this ).dialog( "close" );
					}
				}
			]
		});

	}
	
	return {
		create: createUI,
		loadFlowLibrary: loadFlowLibrary
	}
})();