/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

import * as assert from 'assert';
import 'mocha';
import { TextDecoder, TextEncoder } from 'util';
import * as vscode from 'vscode';
import { asPromise, assertNoRpc, closeAllEditors, createRandomFile, disposeAll, revertAllDirty, saveAllEditors } from '../utils';

async function createRandomNotebookFile() {
	return createRandomFile('', undefined, '.vsctestnb');
}

async function openRandomNotebookDocument() {
	const uri = await createRandomNotebookFile();
	return vscode.workspace.openNotebookDocument(uri);
}

export async function saveAllFilesAndCloseAll() {
	await saveAllEditors();
	await closeAllEditors();
}

async function withEvent<T>(event: vscode.Event<T>, callback: (e: Promise<T>) => Promise<void>) {
	const e = asPromise<T>(event);
	await callback(e);
}


function sleep(ms: number): Promise<void> {
	return new Promise(resolve => {
		setTimeout(resolve, ms);
	});
}

export class Kernel {

	readonly controller: vscode.NotebookController;

	readonly associatedNotebooks = new Set<string>();

	constructor(id: string, label: string, viewType: string = 'notebookCoreTest') {
		this.controller = vscode.notebooks.createNotebookController(id, viewType, label);
		this.controller.executeHandler = this._execute.bind(this);
		this.controller.supportsExecutionOrder = true;
		this.controller.supportedLanguages = ['typescript', 'javascript'];
		this.controller.onDidChangeSelectedNotebooks(e => {
			if (e.selected) {
				this.associatedNotebooks.add(e.notebook.uri.toString());
			} else {
				this.associatedNotebooks.delete(e.notebook.uri.toString());
			}
		});
	}

	protected async _execute(cells: vscode.NotebookCell[]): Promise<void> {
		for (const cell of cells) {
			await this._runCell(cell);
		}
	}

	protected async _runCell(cell: vscode.NotebookCell) {
		// create a single output with exec order 1 and output is plain/text
		// of either the cell itself or (iff empty) the cell's document's uri
		const task = this.controller.createNotebookCellExecution(cell);
		task.start(Date.now());
		task.executionOrder = 1;
		await sleep(10); // Force to be take some time
		await task.replaceOutput([new vscode.NotebookCellOutput([
			vscode.NotebookCellOutputItem.text(cell.document.getText() || cell.document.uri.toString(), 'text/plain')
		])]);
		task.end(true);
	}
}


function getFocusedCell(editor?: vscode.NotebookEditor) {
	return editor ? editor.notebook.cellAt(editor.selections[0].start) : undefined;
}

async function assertKernel(kernel: Kernel, notebook: vscode.NotebookDocument): Promise<void> {
	const success = await vscode.commands.executeCommand('notebook.selectKernel', {
		extension: 'vscode.vscode-api-tests',
		id: kernel.controller.id
	});
	assert.ok(success, `expected selected kernel to be ${kernel.controller.id}`);
	assert.ok(kernel.associatedNotebooks.has(notebook.uri.toString()));
}

const apiTestContentProvider: vscode.NotebookContentProvider = {
	openNotebook: async (resource: vscode.Uri): Promise<vscode.NotebookData> => {
		if (/.*empty\-.*\.vsctestnb$/.test(resource.path)) {
			return {
				metadata: {},
				cells: []
			};
		}

		const dto: vscode.NotebookData = {
			metadata: { custom: { testMetadata: false } },
			cells: [
				{
					value: 'test',
					languageId: 'typescript',
					kind: vscode.NotebookCellKind.Code,
					outputs: [],
					metadata: { custom: { testCellMetadata: 123 } },
					executionSummary: { timing: { startTime: 10, endTime: 20 } }
				},
				{
					value: 'test2',
					languageId: 'typescript',
					kind: vscode.NotebookCellKind.Code,
					outputs: [
						new vscode.NotebookCellOutput([
							vscode.NotebookCellOutputItem.text('Hello World', 'text/plain')
						],
							{
								testOutputMetadata: true,
								['text/plain']: { testOutputItemMetadata: true }
							})
					],
					executionSummary: { executionOrder: 5, success: true },
					metadata: { custom: { testCellMetadata: 456 } }
				}
			]
		};
		return dto;
	},
	saveNotebook: async (_document: vscode.NotebookDocument, _cancellation: vscode.CancellationToken) => {
		return;
	},
	saveNotebookAs: async (_targetResource: vscode.Uri, _document: vscode.NotebookDocument, _cancellation: vscode.CancellationToken) => {
		return;
	},
	backupNotebook: async (_document: vscode.NotebookDocument, _context: vscode.NotebookDocumentBackupContext, _cancellation: vscode.CancellationToken) => {
		return {
			id: '1',
			delete: () => { }
		};
	}
};

(vscode.env.uiKind === vscode.UIKind.Web ? suite.skip : suite)('Notebook API tests', function () {

	const testDisposables: vscode.Disposable[] = [];
	const suiteDisposables: vscode.Disposable[] = [];

	suiteTeardown(async function () {

		assertNoRpc();

		await revertAllDirty();
		await closeAllEditors();

		disposeAll(suiteDisposables);
		suiteDisposables.length = 0;
	});

	suiteSetup(function () {
		suiteDisposables.push(vscode.workspace.registerNotebookContentProvider('notebookCoreTest', apiTestContentProvider));
	});

	let defaultKernel: Kernel;

	setup(async function () {
		// there should be ONE default kernel in this suite
		defaultKernel = new Kernel('mainKernel', 'Notebook Default Kernel');
		testDisposables.push(defaultKernel.controller);
		await saveAllFilesAndCloseAll();
	});

	teardown(async function () {
		disposeAll(testDisposables);
		testDisposables.length = 0;
		await saveAllFilesAndCloseAll();
	});

	test('edit API batch edits', async function () {
		const notebook = await openRandomNotebookDocument();

		const edit = new vscode.WorkspaceEdit();
		const metdataEdit = vscode.NotebookEdit.updateNotebookMetadata({ ...notebook.metadata, custom: { ...(notebook.metadata.custom || {}), extraNotebookMetadata: true } });
		edit.set(notebook.uri, [metdataEdit]);
		const success = await vscode.workspace.applyEdit(edit);
		assert.equal(success, true);
		assert.ok(notebook.metadata.custom.extraNotebookMetadata, `Test metadata not found`);
	});

	test('notebook open', async function () {
		const notebook = await openRandomNotebookDocument();
		const editor = await vscode.window.showNotebookDocument(notebook);
		assert.strictEqual(vscode.window.activeNotebookEditor === editor, true, 'notebook first');
		assert.strictEqual(getFocusedCell(editor)?.document.getText(), 'test');
		assert.strictEqual(getFocusedCell(editor)?.document.languageId, 'typescript');

		const secondCell = editor.notebook.cellAt(1);
		assert.strictEqual(secondCell.outputs.length, 1);
		assert.deepStrictEqual(secondCell.outputs[0].metadata, { testOutputMetadata: true, ['text/plain']: { testOutputItemMetadata: true } });
		assert.strictEqual(secondCell.outputs[0].items.length, 1);
		assert.strictEqual(secondCell.outputs[0].items[0].mime, 'text/plain');
		assert.strictEqual(new TextDecoder().decode(secondCell.outputs[0].items[0].data), 'Hello World');
		assert.strictEqual(secondCell.executionSummary?.executionOrder, 5);
		assert.strictEqual(secondCell.executionSummary?.success, true);
	});

	test('notebook cell actions', async function () {
		const notebook = await openRandomNotebookDocument();
		const editor = await vscode.window.showNotebookDocument(notebook);
		assert.strictEqual(vscode.window.activeNotebookEditor !== undefined, true, 'notebook first');
		assert.strictEqual(vscode.window.activeNotebookEditor === editor, true, 'notebook first');
		assert.strictEqual(getFocusedCell(editor)?.document.getText(), 'test');
		assert.strictEqual(getFocusedCell(editor)?.document.languageId, 'typescript');

		let activeCell = getFocusedCell(editor);

		// ---- focus top and then copy down ---- //
		await vscode.commands.executeCommand('notebook.focusTop');
		activeCell = getFocusedCell(editor);
		assert.strictEqual(editor.notebook.getCells().indexOf(activeCell!), 0);

		await vscode.commands.executeCommand('notebook.cell.copyDown');
		activeCell = getFocusedCell(editor);
		assert.strictEqual(editor.notebook.getCells().indexOf(activeCell!), 1);
		assert.strictEqual(activeCell?.document.getText(), 'test');

		// delete focused cell
		{
			const focusedCell = getFocusedCell(editor);
			assert.strictEqual(focusedCell !== undefined, true);
			const edit = new vscode.WorkspaceEdit();
			edit.replaceNotebookCells(focusedCell!.notebook.uri, new vscode.NotebookRange(focusedCell!.index, focusedCell!.index + 1), []);
			await vscode.workspace.applyEdit(edit);
		}

		activeCell = getFocusedCell(editor);
		assert.strictEqual(editor.notebook.getCells().indexOf(activeCell!), 1);
		assert.strictEqual(activeCell?.document.getText(), 'test2');

		// ---- focus top and then copy up ---- //
		await vscode.commands.executeCommand('notebook.focusTop');
		await vscode.commands.executeCommand('notebook.cell.copyUp');
		assert.strictEqual(editor.notebook.cellCount, 3);
		assert.strictEqual(editor.notebook.cellAt(0).document.getText(), 'test');
		assert.strictEqual(editor.notebook.cellAt(1).document.getText(), 'test');
		assert.strictEqual(editor.notebook.cellAt(2).document.getText(), 'test2');
		activeCell = getFocusedCell(editor);
		assert.strictEqual(editor.notebook.getCells().indexOf(activeCell!), 0);

		await vscode.commands.executeCommand('workbench.action.files.save');
		await vscode.commands.executeCommand('workbench.action.closeActiveEditor');
	});

	// TODO@rebornix this is wrong, `await vscode.commands.executeCommand('notebook.execute');` doesn't wait until the workspace edit is applied
	test.skip('cell execute command takes arguments', async () => {
		const notebook = await openRandomNotebookDocument();
		await vscode.window.showNotebookDocument(notebook);
		assert.strictEqual(vscode.window.activeNotebookEditor !== undefined, true, 'notebook first');
		const editor = vscode.window.activeNotebookEditor!;
		const cell = editor.notebook.cellAt(0);

		await vscode.commands.executeCommand('notebook.execute');
		assert.strictEqual(cell.outputs.length, 0, 'should not execute'); // not runnable, didn't work
	});

	test('cell execute command takes arguments 2', async () => {
		const notebook = await openRandomNotebookDocument();
		await vscode.window.showNotebookDocument(notebook);
		assert.strictEqual(vscode.window.activeNotebookEditor !== undefined, true, 'notebook first');
		const editor = vscode.window.activeNotebookEditor!;
		const cell = editor.notebook.cellAt(0);

		await withEvent(vscode.workspace.onDidChangeNotebookDocument, async (event) => {
			await vscode.commands.executeCommand('notebook.execute');
			await event;
			assert.strictEqual(cell.outputs.length, 1, 'should execute'); // runnable, it worked
		});

		await withEvent(vscode.workspace.onDidChangeNotebookDocument, async event => {
			await vscode.commands.executeCommand('notebook.cell.clearOutputs');
			await event;
			assert.strictEqual(cell.outputs.length, 0, 'should clear');
		});

		const secondResource = await createRandomNotebookFile();
		await vscode.commands.executeCommand('vscode.openWith', secondResource, 'notebookCoreTest');

		await withEvent<vscode.NotebookDocumentChangeEvent>(vscode.workspace.onDidChangeNotebookDocument, async (event) => {
			await vscode.commands.executeCommand('notebook.cell.execute', { start: 0, end: 1 }, notebook.uri);
			await event;
			assert.strictEqual(cell.outputs.length, 1, 'should execute'); // runnable, it worked
			assert.strictEqual(vscode.window.activeNotebookEditor?.notebook.uri.fsPath, secondResource.fsPath);
		});
	});

	// #126371
	test.skip('cell execute command takes arguments ICellRange[]', async () => {
		const notebook = await openRandomNotebookDocument();
		await vscode.window.showNotebookDocument(notebook);

		vscode.commands.executeCommand('notebook.cell.execute', { ranges: [{ start: 0, end: 1 }, { start: 1, end: 2 }] });
		let firstCellExecuted = false;
		let secondCellExecuted = false;
		let resolve: () => void;
		const p = new Promise<void>(r => resolve = r);
		const listener = vscode.workspace.onDidChangeNotebookDocument(e => {
			e.cellChanges.forEach(change => {
				if (change.cell.index === 0) {
					firstCellExecuted = true;
				}

				if (change.cell.index === 1) {
					secondCellExecuted = true;
				}
			});

			if (firstCellExecuted && secondCellExecuted) {
				resolve();
			}
		});

		await p;
		listener.dispose();
		await saveAllFilesAndCloseAll();
	});

	test('document execute command takes arguments', async () => {
		const notebook = await openRandomNotebookDocument();
		await vscode.window.showNotebookDocument(notebook);
		assert.strictEqual(vscode.window.activeNotebookEditor !== undefined, true, 'notebook first');
		const editor = vscode.window.activeNotebookEditor!;
		const cell = editor.notebook.cellAt(0);

		await withEvent<vscode.NotebookDocumentChangeEvent>(vscode.workspace.onDidChangeNotebookDocument, async (event) => {
			await vscode.commands.executeCommand('notebook.execute', notebook.uri);
			await event;
			assert.strictEqual(cell.outputs.length, 1, 'should execute'); // runnable, it worked
		});
	});

	test('cell execute and select kernel', async function () {
		const notebook = await openRandomNotebookDocument();
		const editor = await vscode.window.showNotebookDocument(notebook);
		assert.strictEqual(vscode.window.activeNotebookEditor === editor, true, 'notebook first');

		const cell = editor.notebook.cellAt(0);

		const alternativeKernel = new class extends Kernel {
			constructor() {
				super('secondaryKernel', 'Notebook Secondary Test Kernel');
				this.controller.supportsExecutionOrder = false;
			}

			override async _runCell(cell: vscode.NotebookCell) {
				const task = this.controller.createNotebookCellExecution(cell);
				task.start();
				await task.replaceOutput([new vscode.NotebookCellOutput([
					vscode.NotebookCellOutputItem.text('my second output', 'text/plain')
				])]);
				task.end(true);
			}
		};
		testDisposables.push(alternativeKernel.controller);

		await withEvent<vscode.NotebookDocumentChangeEvent>(vscode.workspace.onDidChangeNotebookDocument, async (event) => {
			await assertKernel(defaultKernel, notebook);
			await vscode.commands.executeCommand('notebook.cell.execute');
			await event;
			assert.strictEqual(cell.outputs.length, 1, 'should execute'); // runnable, it worked
			assert.strictEqual(cell.outputs[0].items.length, 1);
			assert.strictEqual(cell.outputs[0].items[0].mime, 'text/plain');
			assert.deepStrictEqual(new TextDecoder().decode(cell.outputs[0].items[0].data), cell.document.getText());
		});

		await withEvent<vscode.NotebookDocumentChangeEvent>(vscode.workspace.onDidChangeNotebookDocument, async (event) => {
			await assertKernel(alternativeKernel, notebook);
			await vscode.commands.executeCommand('notebook.cell.execute');
			await event;
			assert.strictEqual(cell.outputs.length, 1, 'should execute'); // runnable, it worked
			assert.strictEqual(cell.outputs[0].items.length, 1);
			assert.strictEqual(cell.outputs[0].items[0].mime, 'text/plain');
			assert.deepStrictEqual(new TextDecoder().decode(cell.outputs[0].items[0].data), 'my second output');
		});
	});

	test.skip('onDidChangeCellExecutionState is fired', async () => { // TODO@rebornix https://github.com/microsoft/vscode/issues/139350
		const notebook = await openRandomNotebookDocument();
		const editor = await vscode.window.showNotebookDocument(notebook);
		const cell = editor.notebook.cellAt(0);

		vscode.commands.executeCommand('notebook.cell.execute');
		let eventCount = 0;
		let resolve: () => void;
		const p = new Promise<void>(r => resolve = r);
		const listener = vscode.notebooks.onDidChangeNotebookCellExecutionState(e => {
			if (eventCount === 0) {
				assert.strictEqual(e.state, vscode.NotebookCellExecutionState.Pending, 'should be set to Pending');
			} else if (eventCount === 1) {
				assert.strictEqual(e.state, vscode.NotebookCellExecutionState.Executing, 'should be set to Executing');
				assert.strictEqual(cell.outputs.length, 0, 'no outputs yet: ' + JSON.stringify(cell.outputs[0]));
			} else if (eventCount === 2) {
				assert.strictEqual(e.state, vscode.NotebookCellExecutionState.Idle, 'should be set to Idle');
				assert.strictEqual(cell.outputs.length, 1, 'should have an output');
				resolve();
			}

			eventCount++;
		});

		await p;
		listener.dispose();
	});

	test('multiple tabs: different editors with same document', async function () {

		const notebook = await openRandomNotebookDocument();
		const firstNotebookEditor = await vscode.window.showNotebookDocument(notebook, { viewColumn: vscode.ViewColumn.One });
		assert.ok(firstNotebookEditor === vscode.window.activeNotebookEditor);

		assert.strictEqual(firstNotebookEditor !== undefined, true, 'notebook first');
		assert.strictEqual(getFocusedCell(vscode.window.activeNotebookEditor!)?.document.getText(), 'test');
		assert.strictEqual(getFocusedCell(vscode.window.activeNotebookEditor!)?.document.languageId, 'typescript');

		const secondNotebookEditor = await vscode.window.showNotebookDocument(notebook, { viewColumn: vscode.ViewColumn.Beside });
		assert.strictEqual(secondNotebookEditor !== undefined, true, 'notebook first');
		assert.strictEqual(getFocusedCell(vscode.window.activeNotebookEditor!)?.document.getText(), 'test');
		assert.strictEqual(getFocusedCell(vscode.window.activeNotebookEditor!)?.document.languageId, 'typescript');

		assert.notStrictEqual(firstNotebookEditor, secondNotebookEditor);
		assert.strictEqual(firstNotebookEditor?.notebook, secondNotebookEditor?.notebook, 'split notebook editors share the same document');

	});

	test.skip('#106657. Opening a notebook from markers view is broken ', async function () {

		const document = await openRandomNotebookDocument();
		const [cell] = document.getCells();

		assert.strictEqual(vscode.window.activeNotebookEditor, undefined);

		// opening a cell-uri opens a notebook editor
		await vscode.window.showTextDocument(cell.document, { viewColumn: vscode.ViewColumn.Active });
		// await vscode.commands.executeCommand('vscode.open', cell.document.uri, vscode.ViewColumn.Active);

		assert.strictEqual(!!vscode.window.activeNotebookEditor, true);
		assert.strictEqual(vscode.window.activeNotebookEditor!.notebook.uri.toString(), document.uri.toString());
	});

	test('Cannot open notebook from cell-uri with vscode.open-command', async function () {

		const document = await openRandomNotebookDocument();
		const [cell] = document.getCells();

		await saveAllFilesAndCloseAll();
		assert.strictEqual(vscode.window.activeNotebookEditor, undefined);

		// BUG is that the editor opener (https://github.com/microsoft/vscode/blob/8e7877bdc442f1e83a7fec51920d82b696139129/src/vs/editor/browser/services/openerService.ts#L69)
		// removes the fragment if it matches something numeric. For notebooks that's not wanted...
		await vscode.commands.executeCommand('vscode.open', cell.document.uri);

		assert.strictEqual(vscode.window.activeNotebookEditor!.notebook.uri.toString(), document.uri.toString());
	});

	test('#97830, #97764. Support switch to other editor types', async function () {
		const notebook = await openRandomNotebookDocument();
		const editor = await vscode.window.showNotebookDocument(notebook);
		const edit = new vscode.WorkspaceEdit();
		const focusedCell = getFocusedCell(editor);
		assert.ok(focusedCell);
		edit.replace(focusedCell.document.uri, focusedCell.document.lineAt(0).range, 'var abc = 0;');
		await vscode.workspace.applyEdit(edit);

		assert.strictEqual(getFocusedCell(editor)?.document.getText(), 'var abc = 0;');

		// no kernel -> no default language
		assert.strictEqual(getFocusedCell(editor)?.document.languageId, 'typescript');

		await vscode.commands.executeCommand('vscode.openWith', notebook.uri, 'default');
		assert.strictEqual(vscode.window.activeTextEditor?.document.uri.path, notebook.uri.path);
	});

	// open text editor, pin, and then open a notebook
	test('#96105 - dirty editors', async function () {
		const resource = await createRandomNotebookFile();
		await vscode.commands.executeCommand('vscode.openWith', resource, 'default');
		const edit = new vscode.WorkspaceEdit();
		edit.insert(resource, new vscode.Position(0, 0), 'var abc = 0;');
		await vscode.workspace.applyEdit(edit);

		// now it's dirty, open the resource with notebook editor should open a new one
		await vscode.commands.executeCommand('vscode.openWith', resource, 'notebookCoreTest');
		assert.notStrictEqual(vscode.window.activeNotebookEditor, undefined, 'notebook first');
		// assert.notStrictEqual(vscode.window.activeTextEditor, undefined);

	});

	test('#102411 - untitled notebook creation failed', async function () {
		await vscode.commands.executeCommand('workbench.action.files.newUntitledFile', { viewType: 'notebookCoreTest' });
		assert.notStrictEqual(vscode.window.activeNotebookEditor, undefined, 'untitled notebook editor is not undefined');

		await closeAllEditors();
	});

	test('#102423 - copy/paste shares the same text buffer', async function () {
		const notebook = await openRandomNotebookDocument();
		await vscode.window.showNotebookDocument(notebook);

		let activeCell = getFocusedCell(vscode.window.activeNotebookEditor);
		assert.strictEqual(activeCell?.document.getText(), 'test');

		await vscode.commands.executeCommand('notebook.cell.copyDown');
		await vscode.commands.executeCommand('notebook.cell.edit');
		activeCell = getFocusedCell(vscode.window.activeNotebookEditor);
		assert.strictEqual(vscode.window.activeNotebookEditor!.notebook.getCells().indexOf(activeCell!), 1);
		assert.strictEqual(activeCell?.document.getText(), 'test');

		const edit = new vscode.WorkspaceEdit();
		edit.insert(getFocusedCell(vscode.window.activeNotebookEditor)!.document.uri, new vscode.Position(0, 0), 'var abc = 0;');
		await vscode.workspace.applyEdit(edit);

		assert.strictEqual(vscode.window.activeNotebookEditor!.notebook.getCells().length, 3);
		assert.notStrictEqual(vscode.window.activeNotebookEditor!.notebook.cellAt(0).document.getText(), vscode.window.activeNotebookEditor!.notebook.cellAt(1).document.getText());

		await closeAllEditors();
	});

	test('#115855 onDidSaveNotebookDocument', async function () {
		const resource = await createRandomNotebookFile();
		const notebook = await vscode.workspace.openNotebookDocument(resource);

		const notebookEdit = new vscode.NotebookEdit(new vscode.NotebookRange(1, 1), [new vscode.NotebookCellData(vscode.NotebookCellKind.Code, 'test 2', 'javascript')]);
		const edit = new vscode.WorkspaceEdit();
		edit.set(notebook.uri, [notebookEdit]);
		await vscode.workspace.applyEdit(edit);
		assert.strictEqual(notebook.isDirty, true);

		const saveEvent = asPromise(vscode.workspace.onDidSaveNotebookDocument);
		await notebook.save();
		await saveEvent;

		assert.strictEqual(notebook.isDirty, false);
	});

	test('Output changes are applied once the promise resolves', async function () {

		let called = false;

		const verifyOutputSyncKernel = new class extends Kernel {

			constructor() {
				super('verifyOutputSyncKernel', '');
			}

			override async _execute(cells: vscode.NotebookCell[]) {
				const [cell] = cells;
				const task = this.controller.createNotebookCellExecution(cell);
				task.start();
				await task.replaceOutput([new vscode.NotebookCellOutput([
					vscode.NotebookCellOutputItem.text('Some output', 'text/plain')
				])]);
				assert.strictEqual(cell.notebook.cellAt(0).outputs.length, 1);
				assert.deepStrictEqual(new TextDecoder().decode(cell.notebook.cellAt(0).outputs[0].items[0].data), 'Some output');
				task.end(undefined);
				called = true;
			}
		};

		const notebook = await openRandomNotebookDocument();
		await vscode.window.showNotebookDocument(notebook);
		await assertKernel(verifyOutputSyncKernel, notebook);
		await vscode.commands.executeCommand('notebook.cell.execute');
		assert.strictEqual(called, true);
		verifyOutputSyncKernel.controller.dispose();
	});

	test('executionSummary', async () => {
		const notebook = await openRandomNotebookDocument();
		const editor = await vscode.window.showNotebookDocument(notebook);
		const cell = editor.notebook.cellAt(0);

		assert.strictEqual(cell.executionSummary?.success, undefined);
		assert.strictEqual(cell.executionSummary?.executionOrder, undefined);
		await vscode.commands.executeCommand('notebook.cell.execute');
		assert.strictEqual(cell.outputs.length, 1, 'should execute');
		assert.ok(cell.executionSummary);
		assert.strictEqual(cell.executionSummary!.success, true);
		assert.strictEqual(typeof cell.executionSummary!.executionOrder, 'number');
	});

	test('initialize executionSummary', async () => {

		const document = await openRandomNotebookDocument();
		const cell = document.cellAt(0);

		assert.strictEqual(cell.executionSummary?.success, undefined);
		assert.strictEqual(cell.executionSummary?.timing?.startTime, 10);
		assert.strictEqual(cell.executionSummary?.timing?.endTime, 20);

	});

	test('execution cancelled when delete while executing', async () => {
		const document = await openRandomNotebookDocument();
		const cell = document.cellAt(0);

		let executionWasCancelled = false;
		const cancelledKernel = new class extends Kernel {
			constructor() {
				super('cancelledKernel', '');
			}

			override async _execute(cells: vscode.NotebookCell[]) {
				const [cell] = cells;
				const exe = this.controller.createNotebookCellExecution(cell);
				exe.token.onCancellationRequested(() => executionWasCancelled = true);
			}
		};
		testDisposables.push(cancelledKernel.controller);

		await vscode.window.showNotebookDocument(document);
		await assertKernel(cancelledKernel, document);
		await vscode.commands.executeCommand('notebook.cell.execute');

		// Delete executing cell
		const edit = new vscode.WorkspaceEdit();
		edit.replaceNotebookCells(cell!.notebook.uri, new vscode.NotebookRange(cell!.index, cell!.index + 1), []);
		await vscode.workspace.applyEdit(edit);

		assert.strictEqual(executionWasCancelled, true);
	});

	test('appendOutput to different cell', async function () {
		const notebook = await openRandomNotebookDocument();
		const editor = await vscode.window.showNotebookDocument(notebook);
		const cell0 = editor.notebook.cellAt(0);
		const notebookEdit = new vscode.NotebookEdit(new vscode.NotebookRange(1, 1), [new vscode.NotebookCellData(vscode.NotebookCellKind.Code, 'test 2', 'javascript')]);
		const edit = new vscode.WorkspaceEdit();
		edit.set(notebook.uri, [notebookEdit]);
		await vscode.workspace.applyEdit(edit);
		const cell1 = editor.notebook.cellAt(1);

		const nextCellKernel = new class extends Kernel {
			constructor() {
				super('nextCellKernel', 'Append to cell kernel');
			}

			override async _runCell(cell: vscode.NotebookCell) {
				const task = this.controller.createNotebookCellExecution(cell);
				task.start();
				await task.appendOutput([new vscode.NotebookCellOutput([
					vscode.NotebookCellOutputItem.text('my output')
				])], cell1);
				await task.appendOutput([new vscode.NotebookCellOutput([
					vscode.NotebookCellOutputItem.text('my output 2')
				])], cell1);
				task.end(true);
			}
		};
		testDisposables.push(nextCellKernel.controller);

		await withEvent<vscode.NotebookDocumentChangeEvent>(vscode.workspace.onDidChangeNotebookDocument, async (event) => {
			await assertKernel(nextCellKernel, notebook);
			await vscode.commands.executeCommand('notebook.cell.execute');
			await event;
			assert.strictEqual(cell0.outputs.length, 0, 'should not change cell 0');
			assert.strictEqual(cell1.outputs.length, 2, 'should update cell 1');
			assert.strictEqual(cell1.outputs[0].items.length, 1);
			assert.deepStrictEqual(new TextDecoder().decode(cell1.outputs[0].items[0].data), 'my output');
		});
	});

	test('replaceOutput to different cell', async function () {
		const notebook = await openRandomNotebookDocument();
		const editor = await vscode.window.showNotebookDocument(notebook);
		const cell0 = editor.notebook.cellAt(0);
		const notebookEdit = new vscode.NotebookEdit(new vscode.NotebookRange(1, 1), [new vscode.NotebookCellData(vscode.NotebookCellKind.Code, 'test 2', 'javascript')]);
		const edit = new vscode.WorkspaceEdit();
		edit.set(notebook.uri, [notebookEdit]);
		await vscode.workspace.applyEdit(edit);
		const cell1 = editor.notebook.cellAt(1);

		const nextCellKernel = new class extends Kernel {
			constructor() {
				super('nextCellKernel', 'Replace to cell kernel');
			}

			override async _runCell(cell: vscode.NotebookCell) {
				const task = this.controller.createNotebookCellExecution(cell);
				task.start();
				await task.replaceOutput([new vscode.NotebookCellOutput([
					vscode.NotebookCellOutputItem.text('my output')
				])], cell1);
				await task.replaceOutput([new vscode.NotebookCellOutput([
					vscode.NotebookCellOutputItem.text('my output 2')
				])], cell1);
				task.end(true);
			}
		};
		testDisposables.push(nextCellKernel.controller);

		await withEvent<vscode.NotebookDocumentChangeEvent>(vscode.workspace.onDidChangeNotebookDocument, async (event) => {
			await assertKernel(nextCellKernel, notebook);
			await vscode.commands.executeCommand('notebook.cell.execute');
			await event;
			assert.strictEqual(cell0.outputs.length, 0, 'should not change cell 0');
			assert.strictEqual(cell1.outputs.length, 1, 'should update cell 1');
			assert.strictEqual(cell1.outputs[0].items.length, 1);
			assert.deepStrictEqual(new TextDecoder().decode(cell1.outputs[0].items[0].data), 'my output 2');
		});
	});
});

(vscode.env.uiKind === vscode.UIKind.Web ? suite.skip : suite)('statusbar', () => {
	const emitter = new vscode.EventEmitter<vscode.NotebookCell>();
	const onDidCallProvide = emitter.event;
	const suiteDisposables: vscode.Disposable[] = [];
	suiteTeardown(async function () {
		assertNoRpc();

		await revertAllDirty();
		await closeAllEditors();

		disposeAll(suiteDisposables);
		suiteDisposables.length = 0;
	});

	suiteSetup(() => {
		suiteDisposables.push(vscode.notebooks.registerNotebookCellStatusBarItemProvider('notebookCoreTest', {
			async provideCellStatusBarItems(cell: vscode.NotebookCell, _token: vscode.CancellationToken): Promise<vscode.NotebookCellStatusBarItem[]> {
				emitter.fire(cell);
				return [];
			}
		}));

		suiteDisposables.push(vscode.workspace.registerNotebookContentProvider('notebookCoreTest', apiTestContentProvider));
	});

	test.skip('provideCellStatusBarItems called on metadata change', async function () { // TODO@roblourens https://github.com/microsoft/vscode/issues/139324
		const provideCalled = asPromise(onDidCallProvide);
		const notebook = await openRandomNotebookDocument();
		await vscode.window.showNotebookDocument(notebook);
		await provideCalled;

		const edit = new vscode.WorkspaceEdit();
		edit.replaceNotebookCellMetadata(notebook.uri, 0, { inputCollapsed: true });
		vscode.workspace.applyEdit(edit);
		await provideCalled;
	});
});

(vscode.env.uiKind === vscode.UIKind.Web ? suite.skip : suite)('Notebook API tests (metadata)', function () {
	const testDisposables: vscode.Disposable[] = [];
	const suiteDisposables: vscode.Disposable[] = [];

	suiteTeardown(async function () {
		assertNoRpc();

		await revertAllDirty();
		await closeAllEditors();

		disposeAll(suiteDisposables);
		suiteDisposables.length = 0;
	});

	suiteSetup(function () {
		suiteDisposables.push(vscode.workspace.registerNotebookContentProvider('notebookCoreTest', apiTestContentProvider));
	});

	setup(async function () {
		await saveAllFilesAndCloseAll();
	});

	teardown(async function () {
		disposeAll(testDisposables);
		testDisposables.length = 0;
		await saveAllFilesAndCloseAll();
	});

	test('custom metadata should be supported', async function () {
		const notebook = await openRandomNotebookDocument();
		const editor = await vscode.window.showNotebookDocument(notebook);

		assert.strictEqual(editor.notebook.metadata.custom?.testMetadata, false);
		assert.strictEqual(getFocusedCell(editor)?.metadata.custom?.testCellMetadata, 123);
		assert.strictEqual(getFocusedCell(editor)?.document.languageId, 'typescript');
	});
});

suite('Notebook & LiveShare', function () {

	const suiteDisposables: vscode.Disposable[] = [];
	const notebookType = 'vsls-testing';

	suiteTeardown(() => {
		vscode.Disposable.from(...suiteDisposables).dispose();
	});

	suiteSetup(function () {

		suiteDisposables.push(vscode.workspace.registerNotebookSerializer(notebookType, new class implements vscode.NotebookSerializer {
			deserializeNotebook(content: Uint8Array, _token: vscode.CancellationToken): vscode.NotebookData | Thenable<vscode.NotebookData> {
				const value = new TextDecoder().decode(content);
				const cell1 = new vscode.NotebookCellData(vscode.NotebookCellKind.Code, value, 'fooLang');
				cell1.outputs = [new vscode.NotebookCellOutput([vscode.NotebookCellOutputItem.stderr(value)])];
				return new vscode.NotebookData([cell1]);
			}
			serializeNotebook(data: vscode.NotebookData, _token: vscode.CancellationToken): Uint8Array | Thenable<Uint8Array> {
				return new TextEncoder().encode(data.cells[0].value);
			}
		}, {}, {
			displayName: 'LS',
			filenamePattern: ['*'],
		}));
	});

	test('command: vscode.resolveNotebookContentProviders', async function () {

		type Info = { viewType: string; displayName: string; filenamePattern: string[] };

		const info = await vscode.commands.executeCommand<Info[]>('vscode.resolveNotebookContentProviders');
		assert.strictEqual(Array.isArray(info), true);

		const item = info.find(item => item.viewType === notebookType);
		assert.ok(item);
		assert.strictEqual(item?.viewType, notebookType);
	});

	test('command: vscode.executeDataToNotebook', async function () {
		const value = 'dataToNotebook';
		const data = await vscode.commands.executeCommand<vscode.NotebookData>('vscode.executeDataToNotebook', notebookType, new TextEncoder().encode(value));
		assert.ok(data instanceof vscode.NotebookData);
		assert.strictEqual(data.cells.length, 1);
		assert.strictEqual(data.cells[0].value, value);
		assert.strictEqual(new TextDecoder().decode(data.cells[0].outputs![0].items[0].data), value);
	});

	test('command: vscode.executeNotebookToData', async function () {
		const value = 'notebookToData';
		const notebook = new vscode.NotebookData([new vscode.NotebookCellData(vscode.NotebookCellKind.Code, value, 'fooLang')]);
		const data = await vscode.commands.executeCommand<Uint8Array>('vscode.executeNotebookToData', notebookType, notebook);
		assert.ok(data instanceof Uint8Array);
		assert.deepStrictEqual(new TextDecoder().decode(data), value);
	});
});