"use strict";

describe("Zotero.ItemTreeView", function() {
	var win, zp, cv, itemsView, existingItemID;
	
	// Load Zotero pane and select library
	before(function* () {
		win = yield loadZoteroPane();
		zp = win.ZoteroPane;
		cv = zp.collectionsView;
		
		var item = yield createDataObject('item', { setTitle: true });
		existingItemID = item.id;
	});
	beforeEach(function* () {
		yield selectLibrary(win);
		itemsView = zp.itemsView;
	})
	after(function () {
		win.close();
	});
	
	it("shouldn't show items in trash in library root", function* () {
		var item = yield createDataObject('item', { title: "foo" });
		var itemID = item.id;
		item.deleted = true;
		yield item.saveTx();
		assert.isFalse(itemsView.getRowIndexByID(itemID));
	})
	
	describe("#selectItem()", function () {
		/**
		 * Make sure that selectItem() doesn't hang if the pane's item-select handler is never
		 * triggered due to the item already being selected
		 */
		it("should return if item is already selected", function* () {
			yield itemsView.selectItem(existingItemID);
			var selected = itemsView.getSelectedItems(true);
			assert.lengthOf(selected, 1);
			assert.equal(selected[0], existingItemID);
			yield itemsView.selectItem(existingItemID);
			selected = itemsView.getSelectedItems(true);
			assert.lengthOf(selected, 1);
			assert.equal(selected[0], existingItemID);
		});
	})
	
	describe("#getCellText()", function () {
		it("should return new value after edit", function* () {
			var str = Zotero.Utilities.randomString();
			var item = yield createDataObject('item', { title: str });
			var row = itemsView.getRowIndexByID(item.id);
			assert.equal(itemsView.getCellText(row, { id: 'zotero-items-column-title' }), str);
			yield modifyDataObject(item);
			assert.notEqual(itemsView.getCellText(row, { id: 'zotero-items-column-title' }), str);
		})
	})
	
	describe("#notify()", function () {
		beforeEach(function () {
			sinon.spy(win.ZoteroPane, "itemSelected");
		})
		
		afterEach(function () {
			win.ZoteroPane.itemSelected.restore();
		})
		
		it("should select a new item", function* () {
			itemsView.selection.clearSelection();
			assert.lengthOf(itemsView.getSelectedItems(), 0);
			
			assert.equal(win.ZoteroPane.itemSelected.callCount, 1);
			
			// Create item
			var item = new Zotero.Item('book');
			var id = yield item.saveTx();
			
			// New item should be selected
			var selected = itemsView.getSelectedItems();
			assert.lengthOf(selected, 1);
			assert.equal(selected[0].id, id);
			
			// Item should have been selected once
			assert.equal(win.ZoteroPane.itemSelected.callCount, 2);
			assert.ok(win.ZoteroPane.itemSelected.returnValues[1].value());
		});
		
		it("shouldn't select a new item if skipNotifier is passed", function* () {
			// Select existing item
			yield itemsView.selectItem(existingItemID);
			var selected = itemsView.getSelectedItems(true);
			assert.lengthOf(selected, 1);
			assert.equal(selected[0], existingItemID);
			
			// Reset call count on spy
			win.ZoteroPane.itemSelected.reset();
			
			// Create item with skipNotifier flag
			var item = new Zotero.Item('book');
			var id = yield item.saveTx({
				skipNotifier: true
			});
			
			// No select events should have occurred
			assert.equal(win.ZoteroPane.itemSelected.callCount, 0);
			
			// Existing item should still be selected
			selected = itemsView.getSelectedItems(true);
			assert.lengthOf(selected, 1);
			assert.equal(selected[0], existingItemID);
		});
		
		it("shouldn't select a new item if skipSelect is passed", function* () {
			// Select existing item
			yield itemsView.selectItem(existingItemID);
			var selected = itemsView.getSelectedItems(true);
			assert.lengthOf(selected, 1);
			assert.equal(selected[0], existingItemID);
			
			// Reset call count on spy
			win.ZoteroPane.itemSelected.reset();
			
			// Create item with skipSelect flag
			var item = new Zotero.Item('book');
			var id = yield item.saveTx({
				skipSelect: true
			});
			
			// itemSelected should have been called once (from 'selectEventsSuppressed = false'
			// in notify()) as a no-op
			assert.equal(win.ZoteroPane.itemSelected.callCount, 1);
			assert.isFalse(win.ZoteroPane.itemSelected.returnValues[0].value());
			
			// Existing item should still be selected
			selected = itemsView.getSelectedItems(true);
			assert.lengthOf(selected, 1);
			assert.equal(selected[0], existingItemID);
		});
		
		it("shouldn't clear quicksearch if skipSelect is passed", function* () {
			var searchString = Zotero.Items.get(existingItemID).getField('title');
			
			yield createDataObject('item');
			
			var quicksearch = win.document.getElementById('zotero-tb-search');
			quicksearch.value = searchString;
			quicksearch.doCommand();
			yield itemsView._refreshPromise;
			
			assert.equal(itemsView.rowCount, 1);
			
			// Create item with skipSelect flag
			var item = new Zotero.Item('book');
			var ran = Zotero.Utilities.randomString();
			item.setField('title', ran);
			var id = yield item.saveTx({
				skipSelect: true
			});
			
			assert.equal(itemsView.rowCount, 1);
			assert.equal(quicksearch.value, searchString);
			
			// Clear search
			quicksearch.value = "";
			quicksearch.doCommand();
			yield itemsView._refreshPromise;
		});
		
		it("shouldn't change selection outside of trash if new trashed item is created with skipSelect", function* () {
			yield selectLibrary(win);
			yield waitForItemsLoad(win);
			
			itemsView.selection.clearSelection();
			
			var item = createUnsavedDataObject('item');
			item.deleted = true;
			var id = yield item.saveTx({
				skipSelect: true
			});
			
			// Nothing should be selected
			var selected = itemsView.getSelectedItems(true);
			assert.lengthOf(selected, 0);
		})
		
		it("shouldn't select a modified item", function* () {
			// Create item
			var item = new Zotero.Item('book');
			var id = yield item.saveTx();
			
			itemsView.selection.clearSelection();
			assert.lengthOf(itemsView.getSelectedItems(), 0);
			// Reset call count on spy
			win.ZoteroPane.itemSelected.reset();
			
			// Modify item
			item.setField('title', 'no select on modify');
			yield item.saveTx();
			
			// itemSelected should have been called once (from 'selectEventsSuppressed = false'
			// in notify()) as a no-op
			assert.equal(win.ZoteroPane.itemSelected.callCount, 1);
			assert.isFalse(win.ZoteroPane.itemSelected.returnValues[0].value());
			
			// Modified item should not be selected
			assert.lengthOf(itemsView.getSelectedItems(), 0);
		});
		
		it("should maintain selection on a selected modified item", function* () {
			// Create item
			var item = new Zotero.Item('book');
			var id = yield item.saveTx();
			
			yield itemsView.selectItem(id);
			var selected = itemsView.getSelectedItems(true);
			assert.lengthOf(selected, 1);
			assert.equal(selected[0], id);
			
			// Reset call count on spy
			win.ZoteroPane.itemSelected.reset();
			
			// Modify item
			item.setField('title', 'maintain selection on modify');
			yield item.saveTx();
			
			// itemSelected should have been called once (from 'selectEventsSuppressed = false'
			// in notify()) as a no-op
			assert.equal(win.ZoteroPane.itemSelected.callCount, 1);
			assert.isFalse(win.ZoteroPane.itemSelected.returnValues[0].value());
			
			// Modified item should still be selected
			selected = itemsView.getSelectedItems(true);
			assert.lengthOf(selected, 1);
			assert.equal(selected[0], id);
		});
		
		it("should reselect the same row when an item is removed", function* () {
			var collection = yield createDataObject('collection');
			yield waitForItemsLoad(win);
			itemsView = zp.itemsView;
			
			var items = [];
			var num = 6;
			for (let i = 0; i < num; i++) {
				let item = createUnsavedDataObject('item');
				item.addToCollection(collection.id);
				yield item.saveTx();
				items.push(item);
			}
			assert.equal(itemsView.rowCount, num);
			
			// Select the third item in the list
			itemsView.selection.select(2);
			var treeRow = itemsView.getRow(2);
			yield treeRow.ref.eraseTx();
			
			// Selection should stay on third row
			assert.equal(itemsView.selection.currentIndex, 2);
			
			yield Zotero.Items.erase(items.map(item => item.id));
		})
		
		it("should keep first visible item in view when other items are added with skipSelect and nothing in view is selected", function* () {
			var collection = yield createDataObject('collection');
			yield waitForItemsLoad(win);
			itemsView = zp.itemsView;
			
			var treebox = itemsView._treebox;
			var numVisibleRows = treebox.getPageLength();
			
			// Get a numeric string left-padded with zeroes
			function getTitle(i, max) {
				return new String(new Array(max + 1).join(0) + i).slice(-1 * max);
			}
			
			var num = numVisibleRows + 10;
			yield Zotero.DB.executeTransaction(function* () {
				for (let i = 0; i < num; i++) {
					let title = getTitle(i, num);
					let item = createUnsavedDataObject('item', { title });
					item.addToCollection(collection.id);
					yield item.save();
				}
			}.bind(this));
			
			// Scroll halfway
			treebox.scrollToRow(Math.round(num / 2) - Math.round(numVisibleRows / 2));
			
			var firstVisibleItemID = itemsView.getRow(treebox.getFirstVisibleRow()).ref.id;
			
			// Add one item at the beginning
			var item = createUnsavedDataObject(
				'item', { title: getTitle(0, num), collections: [collection.id] }
			);
			yield item.saveTx({
				skipSelect: true
			});
			// Then add a few more in a transaction
			yield Zotero.DB.executeTransaction(function* () {
				for (let i = 0; i < 3; i++) {
					var item = createUnsavedDataObject(
						'item', { title: getTitle(0, num), collections: [collection.id] }
					);
					yield item.save({
						skipSelect: true
					});
				}
			}.bind(this));
			
			// Make sure the same item is still in the first visible row
			assert.equal(itemsView.getRow(treebox.getFirstVisibleRow()).ref.id, firstVisibleItemID);
		});
		
		it("should keep first visible selected item in position when other items are added with skipSelect", function* () {
			var collection = yield createDataObject('collection');
			yield waitForItemsLoad(win);
			itemsView = zp.itemsView;
			
			var treebox = itemsView._treebox;
			var numVisibleRows = treebox.getPageLength();
			
			// Get a numeric string left-padded with zeroes
			function getTitle(i, max) {
				return new String(new Array(max + 1).join(0) + i).slice(-1 * max);
			}
			
			var num = numVisibleRows + 10;
			yield Zotero.DB.executeTransaction(function* () {
				for (let i = 0; i < num; i++) {
					let title = getTitle(i, num);
					let item = createUnsavedDataObject('item', { title });
					item.addToCollection(collection.id);
					yield item.save();
				}
			}.bind(this));
			
			// Scroll halfway
			treebox.scrollToRow(Math.round(num / 2) - Math.round(numVisibleRows / 2));
			
			// Select an item
			itemsView.selection.select(Math.round(num / 2));
			var selectedItem = itemsView.getSelectedItems()[0];
			var offset = itemsView.getRowIndexByID(selectedItem.treeViewID) - treebox.getFirstVisibleRow();
			
			// Add one item at the beginning
			var item = createUnsavedDataObject(
				'item', { title: getTitle(0, num), collections: [collection.id] }
			);
			yield item.saveTx({
				skipSelect: true
			});
			// Then add a few more in a transaction
			yield Zotero.DB.executeTransaction(function* () {
				for (let i = 0; i < 3; i++) {
					var item = createUnsavedDataObject(
						'item', { title: getTitle(0, num), collections: [collection.id] }
					);
					yield item.save({
						skipSelect: true
					});
				}
			}.bind(this));
			
			// Make sure the selected item is still at the same position
			assert.equal(itemsView.getSelectedItems()[0], selectedItem);
			var newOffset = itemsView.getRowIndexByID(selectedItem.treeViewID) - treebox.getFirstVisibleRow();
			assert.equal(newOffset, offset);
		});
		
		it("shouldn't scroll items list if at top when other items are added with skipSelect", function* () {
			var collection = yield createDataObject('collection');
			yield waitForItemsLoad(win);
			itemsView = zp.itemsView;
			
			var treebox = itemsView._treebox;
			var numVisibleRows = treebox.getPageLength();
			
			// Get a numeric string left-padded with zeroes
			function getTitle(i, max) {
				return new String(new Array(max + 1).join(0) + i).slice(-1 * max);
			}
			
			var num = numVisibleRows + 10;
			yield Zotero.DB.executeTransaction(function* () {
				// Start at "*1" so we can add items before
				for (let i = 1; i < num; i++) {
					let title = getTitle(i, num);
					let item = createUnsavedDataObject('item', { title });
					item.addToCollection(collection.id);
					yield item.save();
				}
			}.bind(this));
			
			// Scroll to top
			treebox.scrollToRow(0);
			
			// Add one item at the beginning
			var item = createUnsavedDataObject(
				'item', { title: getTitle(0, num), collections: [collection.id] }
			);
			yield item.saveTx({
				skipSelect: true
			});
			// Then add a few more in a transaction
			yield Zotero.DB.executeTransaction(function* () {
				for (let i = 0; i < 3; i++) {
					var item = createUnsavedDataObject(
						'item', { title: getTitle(0, num), collections: [collection.id] }
					);
					yield item.save({
						skipSelect: true
					});
				}
			}.bind(this));
			
			// Make sure the first row is still at the top
			assert.equal(treebox.getFirstVisibleRow(), 0);
		});
		
		it("should update search results when items are added", function* () {
			var search = yield createDataObject('search');
			var title = search.getConditions()[0].value;
			
			yield waitForItemsLoad(win);
			assert.equal(zp.itemsView.rowCount, 0);
			
			// Add an item matching search
			var item = yield createDataObject('item', { title });
			
			yield waitForItemsLoad(win);
			assert.equal(zp.itemsView.rowCount, 1);
			assert.equal(zp.itemsView.getRowIndexByID(item.id), 0);
		});
		
		it("should re-sort search results when an item is modified", function* () {
			var search = yield createDataObject('search');
			itemsView = zp.itemsView;
			var title = search.getConditions()[0].value;
			
			var item1 = yield createDataObject('item', { title: title + " 1" });
			var item2 = yield createDataObject('item', { title: title + " 3" });
			var item3 = yield createDataObject('item', { title: title + " 5" });
			var item4 = yield createDataObject('item', { title: title + " 7" });
			
			var col = itemsView._treebox.columns.getNamedColumn('zotero-items-column-title');
			col.element.click();
			if (col.element.getAttribute('sortDirection') == 'ascending') {
				col.element.click();
			}
			
			// Check initial sort order
			assert.equal(itemsView.getRow(0).ref.getField('title'), title + " 7");
			assert.equal(itemsView.getRow(3).ref.getField('title'), title + " 1");
			
			// Set first row to title that should be sorted in the middle
			itemsView.getRow(0).ref.setField('title', title + " 4");
			yield itemsView.getRow(0).ref.saveTx();
			
			assert.equal(itemsView.getRow(0).ref.getField('title'), title + " 5");
			assert.equal(itemsView.getRow(1).ref.getField('title'), title + " 4");
			assert.equal(itemsView.getRow(3).ref.getField('title'), title + " 1");
		});
		
		it("should update search results when search conditions are changed", function* () {
			var search = createUnsavedDataObject('search');
			var title1 = Zotero.Utilities.randomString();
			var title2 = Zotero.Utilities.randomString();
			search.fromJSON({
				name: "Test",
				conditions: [
					{
						condition: "title",
						operator: "is",
						value: title1
					}
				]
			});
			yield search.saveTx();
			
			yield waitForItemsLoad(win);
			
			// Add an item that doesn't match search
			var item = yield createDataObject('item', { title: title2 });
			yield waitForItemsLoad(win);
			assert.equal(zp.itemsView.rowCount, 0);
			
			// Modify conditions to match item
			search.removeCondition(0);
			search.addCondition("title", "is", title2);
			yield search.saveTx();
			
			yield waitForItemsLoad(win);
			
			assert.equal(zp.itemsView.rowCount, 1);
		});
		
		it("should remove items from Unfiled Items when added to a collection", function* () {
			var userLibraryID = Zotero.Libraries.userLibraryID;
			var collection = yield createDataObject('collection');
			var item = yield createDataObject('item', { title: "Unfiled Item" });
			yield zp.setVirtual(userLibraryID, 'unfiled', true);
			var selected = yield cv.selectByID("U" + userLibraryID);
			assert.ok(selected);
			yield waitForItemsLoad(win);
			assert.isNumber(zp.itemsView.getRowIndexByID(item.id));
			yield Zotero.DB.executeTransaction(function* () {
				yield collection.addItem(item.id);
			});
			assert.isFalse(zp.itemsView.getRowIndexByID(item.id));
		});
	})
	
	describe("#drop()", function () {
		var httpd;
		var port = 16213;
		var baseURL = `http://localhost:${port}/`;
		var pdfFilename = "test.pdf";
		var pdfURL = baseURL + pdfFilename;
		var pdfPath;
		
		// Serve a PDF to test URL dragging
		before(function () {
			Components.utils.import("resource://zotero-unit/httpd.js");
			httpd = new HttpServer();
			httpd.start(port);
			var file = getTestDataDirectory();
			file.append(pdfFilename);
			pdfPath = file.path;
			httpd.registerFile("/" + pdfFilename, file);
		});
		
		after(function* () {
			var defer = new Zotero.Promise.defer();
			httpd.stop(() => defer.resolve());
			yield defer.promise;
		});
		
		it("should move a child item from one item to another", function* () {
			var collection = yield createDataObject('collection');
			yield waitForItemsLoad(win);
			var item1 = yield createDataObject('item', { title: "A", collections: [collection.id] });
			var item2 = yield createDataObject('item', { title: "B", collections: [collection.id] });
			var item3 = yield createDataObject('item', { itemType: 'note', parentID: item1.id });
			
			let view = zp.itemsView;
			yield view.selectItem(item3.id, true);
			
			var deferred = Zotero.Promise.defer();
			view.addEventListener('select', () => deferred.resolve());
			
			view.drop(view.getRowIndexByID(item2.id), 0, {
				dropEffect: 'copy',
				effectAllowed: 'copy',
				types: {
					contains: function (type) {
						return type == 'zotero/item';
					}
				},
				getData: function (type) {
					if (type == 'zotero/item') {
						return item3.id + "";
					}
				},
				mozItemCount: 1
			})
			
			yield deferred.promise;
			
			// Old parent should be empty
			assert.isFalse(view.isContainerOpen(view.getRowIndexByID(item1.id)));
			assert.isTrue(view.isContainerEmpty(view.getRowIndexByID(item1.id)));
			
			// New parent should be open
			assert.isTrue(view.isContainerOpen(view.getRowIndexByID(item2.id)));
			assert.isFalse(view.isContainerEmpty(view.getRowIndexByID(item2.id)));
		});
		
		it("should move a child item from last item in list to another", function* () {
			var collection = yield createDataObject('collection');
			yield waitForItemsLoad(win);
			var item1 = yield createDataObject('item', { title: "A", collections: [collection.id] });
			var item2 = yield createDataObject('item', { title: "B", collections: [collection.id] });
			var item3 = yield createDataObject('item', { itemType: 'note', parentID: item2.id });
			
			let view = zp.itemsView;
			yield view.selectItem(item3.id, true);
			
			var deferred = Zotero.Promise.defer();
			view.addEventListener('select', () => deferred.resolve());
			
			view.drop(view.getRowIndexByID(item1.id), 0, {
				dropEffect: 'copy',
				effectAllowed: 'copy',
				types: {
					contains: function (type) {
						return type == 'zotero/item';
					}
				},
				getData: function (type) {
					if (type == 'zotero/item') {
						return item3.id + "";
					}
				},
				mozItemCount: 1
			})
			
			yield deferred.promise;
			
			// Old parent should be empty
			assert.isFalse(view.isContainerOpen(view.getRowIndexByID(item2.id)));
			assert.isTrue(view.isContainerEmpty(view.getRowIndexByID(item2.id)));
			
			// New parent should be open
			assert.isTrue(view.isContainerOpen(view.getRowIndexByID(item1.id)));
			assert.isFalse(view.isContainerEmpty(view.getRowIndexByID(item1.id)));
		});
		
		it("should create a top-level attachment when a file is dragged", function* () {
			var file = getTestDataDirectory();
			file.append('test.png');
			
			var deferred = Zotero.Promise.defer();
			itemsView.addEventListener('select', () => deferred.resolve());
			
			itemsView.drop(0, -1, {
				dropEffect: 'copy',
				effectAllowed: 'copy',
				types: {
					contains: function (type) {
						return type == 'application/x-moz-file';
					}
				},
				mozItemCount: 1,
				mozGetDataAt: function (type, i) {
					if (type == 'application/x-moz-file' && i == 0) {
						return file;
					}
				}
			})
			
			yield deferred.promise;
			var items = itemsView.getSelectedItems();
			var path = yield items[0].getFilePathAsync();
			assert.equal(
				(yield Zotero.File.getBinaryContentsAsync(path)),
				(yield Zotero.File.getBinaryContentsAsync(file))
			);
		});
		
		it("should create a top-level attachment when a URL is dragged", function* () {
			var deferred = Zotero.Promise.defer();
			itemsView.addEventListener('select', () => deferred.resolve());
			
			itemsView.drop(0, -1, {
				dropEffect: 'copy',
				effectAllowed: 'copy',
				types: {
					contains: function (type) {
						return type == 'text/x-moz-url';
					}
				},
				getData: function (type) {
					if (type == 'text/x-moz-url') {
						return pdfURL;
					}
				},
				mozItemCount: 1,
			})
			
			yield deferred.promise;
			var item = itemsView.getSelectedItems()[0];
			assert.equal(item.getField('url'), pdfURL);
			assert.equal(
				(yield Zotero.File.getBinaryContentsAsync(yield item.getFilePathAsync())),
				(yield Zotero.File.getBinaryContentsAsync(pdfPath))
			);
		});
		
		it("should create a child attachment when a URL is dragged", function* () {
			var view = zp.itemsView;
			var parentItem = yield createDataObject('item');
			var parentRow = view.getRowIndexByID(parentItem.id);
			
			var promise = waitForItemEvent('add');
			
			itemsView.drop(parentRow, 0, {
				dropEffect: 'copy',
				effectAllowed: 'copy',
				types: {
					contains: function (type) {
						return type == 'text/x-moz-url';
					}
				},
				getData: function (type) {
					if (type == 'text/x-moz-url') {
						return pdfURL;
					}
				},
				mozItemCount: 1,
			})
			
			var itemIDs = yield promise;
			var item = Zotero.Items.get(itemIDs[0]);
			assert.equal(item.parentItemID, parentItem.id);
			assert.equal(item.getField('url'), pdfURL);
			assert.equal(
				(yield Zotero.File.getBinaryContentsAsync(yield item.getFilePathAsync())),
				(yield Zotero.File.getBinaryContentsAsync(pdfPath))
			);
		});
	});
})