$(function(){

	tw.initDocuments = function(){

		if(tw.documentsModel!==undefined){
			tw.documentsModel.refreshDocs();

		}else{

			tw.documentsModel = {

				hulpDocuments	: ko.observableArray([]),
				selectedHulpID		: ko.observable()		,
				upload				: ko.observable()		,
				docTypes			: ko.observableArray([]),
				selectedDoctype	: ko.observable()		,
				docName			: ko.observable('')		,
				actionUrl			: ko.observable()		,
				docID				: ko.observable(0)		,
				selectedFile			: ko.observable('')		,
				nonTags			: ko.observableArray([]),
				selectedTags		: ko.observableArray([]),
				tagsToAdd			: ko.observableArray([]),
				tagsToRemove		: ko.observableArray([]),
				newTagName		: ko.observable()		,
				bezig				: ko.observable(false)	,

				documentsInit	: function(){
					var self = tw.documentsModel;
					$.getJSON('index.php/ijkpartituur/documents', function(data){
						self.docTypes(data.doctypes);
					});
				}										,

				setDocument		: function(){
					setDocument(this);
				}										,

				refreshDocs		: function(){
					var self = tw.documentsModel;
					self.resetForm();
		                    $("#lsOverlay").fadeIn(500, function(){
		                        $("#upload-form").fadeIn().css('z-index', '310');
		                    });

					$.getJSON('index.php/ijkpartituur/documents/get_documents/' + self.selectedHulpID(), function(data){
						self.hulpDocuments(data.documents);

						self.upload(data.upload);
						self.nonTags(data.nontags);
						self.selectedTags(data.selectedtags);
						if(data.documentid) setDocument(data.documents[0]);
					});
				},

				addTag	: function(data, event){
					var self = tw.documentsModel;

					if(event.keyCode === 13){
						if(this.newTagName().length===0) return;

						if(self.docID()===0){
							apprise('U moet eerst een document selecteren om labels toe te voegen', {animate:true});
							return true;
						}

						var submitDATA = {tagname :this.newTagName()};
						var submitURL = 'index.php/ijkpartituur/documents/save_tag/' + self.docID();

						$.post(submitURL, submitDATA, function(data){
							self.nonTags(data.nontags);
							self.selectedTags(data.selectedtags);
							self.newTagName('');
						}, 'json');
					}
				}										,

				removeTag			: function(){
					var self = tw.documentsModel;

					if(this.tagsToAdd().length===0) return;
					apprise('weet u zeker dat u dit/deze label(s) wilt verwijderen', {
						animate: true		,
						verify : false		,
						textYes: 'Ja'		,
						textNo : 'Nee'

					}, function(response){
						if(response){
							var submitDATA = {newtags:self.tagsToAdd()};
							var submitURL = 'index.php/ijkpartituur/documents/remove_tag/' + self.docID();

							$.post(submitURL, submitDATA, function(data){
								self.nonTags(data.nontags);
								self.selectedTags(data.selectedtags);
							}, 'json');
						}
					});
				}										,

				addTags				: function(){
					var self = tw.documentsModel;

					if(this.tagsToAdd().length===0) return;

					var submitDATA = {newtags:this.tagsToAdd()};
					var submitURL = 'index.php/ijkpartituur/documents/add_tags/' + self.docID();

					$.post(submitURL, submitDATA, function(data){
						self.nonTags(data.nontags);
						self.selectedTags(data.selectedtags);
					}, 'json');	
				}										,

				removeTags			: function(){
					var self = tw.documentsModel;

					if(this.tagsToRemove().length===0) return;

					var submitDATA = {removetags:this.tagsToRemove()};
					var submitURL = 'index.php/ijkpartituur/documents/remove_tags/' + self.docID();

					$.post(submitURL, submitDATA, function(data){
						self.nonTags(data.nontags);
						self.selectedTags(data.selectedtags);
					}, 'json');	

				}										,

				setName				: function(){
					var self = tw.documentsModel;

					if(self.docName().length===0){
						var fileName = /([^\\]+)$/.exec(self.selectedFile())[1];
						fileName = fileName.replace(/\..+$/, '');
						self.docName(fileName);
					}
				}										,

				resetForm			: function(){
					var self = tw.documentsModel;

					self.docID(0);
					self.docName('');
					self.selectedFile('');
					self.selectedDoctype(undefined);
				}										,

				saveDocument	: function(){
					var self = tw.documentsModel;
					var msg = '';

					if(self.docName().length===0) msg += 'U heeft geen documentnaam ingevoerd<br />';
					if(self.selectedDoctype()===undefined) 'U heeft geen type document aangegeven';
					if(msg!==''){
						apprise(msg, {animate:true});
						return;
					}

					var url = 'index.php/ijkpartituur/documents/upload_document/' + tw.documentsModel.selectedHulpID();
					url+= '/' + self.selectedDoctype() + '/' + self.docID();
					self.actionUrl(url);

					//$("#upload-overlay").fadeIn(100, function(){
						$("#upload-form-form").submit();
					//});
				}								,

				downloadDoc			: function(){
					tw.downLoadDocument(this.id);
				}								,

				deleteDocument		: function(){
					var self = tw.documentsModel;
					var that = this;
					if (self.bezig()) return;
					self.bezig(true);
					apprise('weet u zeker dat u dit document wilt verwijderen?',
					{
						animate	: true		,
						verify	: true		,
						textYes	: 'Ja'		,
						textNo	: 'Nee'
					}, function(response){
						if(response){
							$.get('index.php/ijkpartituur/documents/delete_document/' + that.id, function(){
								self.refreshDocs();
								self.bezig(false);
							});
						}
						else { self.bezig(false);}
					});
				}
			};

			function setDocument(doc){
				var self = tw.documentsModel;

				self.docID(doc.id);
				self.docName(doc.name);
				self.selectedDoctype(doc.doctypeid);
				$.getJSON('index.php/ijkpartituur/documents/set_tags/' + doc.id, function(data){
					self.nonTags(data.nontags);
					self.selectedTags(data.selectedtags);
				});
			}

			tw.documentsModel.documentsInit();

			ko.applyBindings(tw.documentsModel, document.getElementById("upload-form"));
		}

	};

    tw.initDocuments();

	tw.downLoadDocument = function(docID){
		var win=window.open('index.php/ijkpartituur/documents/download_document/' + docID, '_blank');
		win.focus();
	}

});