/**
 * Copyright (c) 2019 The xterm.js authors. All rights reserved.
 * @license MIT
 */

import { assert } from 'chai';
import { writeSync, openTerminal, launchBrowser } from './TestUtils';
import { Browser, Page } from 'playwright';

const APP = 'http://127.0.0.1:3001/test';

let browser: Browser;
let page: Page;
const width = 800;
const height = 600;

describe('Parser Integration Tests', function (): void {
  before(async function (): Promise<any> {
    browser = await launchBrowser();
    page = await (await browser.newContext()).newPage();
    await page.setViewportSize({ width, height });
    await page.goto(APP);
    await openTerminal(page);
  });

  after(async () => browser.close());

  describe('registerCsiHandler', () => {
    it('should call custom CSI handler with js array params', async () => {
      await page.evaluate(`
        window.term.reset();
        window._customCsiHandlerParams = [];
        const _customCsiHandler = window.term.parser.registerCsiHandler({final: 'm'}, (params, collect) => {
          window._customCsiHandlerParams.push(params);
          return false;
        }, '');
      `);
      await writeSync(page, '\x1b[38;5;123mparams\x1b[38:2::50:100:150msubparams');
      assert.deepEqual(await page.evaluate(`window._customCsiHandlerParams`), [
        [38, 5, 123],
        [38, [2, -1, 50, 100, 150]]
      ]);
    });
    it('async', async () => {
      await page.evaluate(`
        window.term.reset();
        window._customCsiHandlerCallStack = [];
        const _customCsiHandlerA = window.term.parser.registerCsiHandler({intermediates:'+', final: 'Z'}, params => {
          window._customCsiHandlerCallStack.push(['A', params]);
          return false;
        });
        const _customCsiHandlerB = window.term.parser.registerCsiHandler({intermediates:'+', final: 'Z'}, async params => {
          await new Promise(res => setTimeout(res, 50));
          window._customCsiHandlerCallStack.push(['B', params]);
          return false;
        });
        const _customCsiHandlerC = window.term.parser.registerCsiHandler({intermediates:'+', final: 'Z'}, params => {
          window._customCsiHandlerCallStack.push(['C', params]);
          return false;
        });
      `);
      await writeSync(page, '\x1b[1;2+Z');
      assert.deepEqual(await page.evaluate(`window._customCsiHandlerCallStack`), [
        ['C', [1, 2]],
        ['B', [1, 2]],
        ['A', [1, 2]]
      ]);
    });
  });
  describe('registerDcsHandler', () => {
    it('should respects return value', async () => {
      await page.evaluate(`
        window.term.reset();
        window._customDcsHandlerCallStack = [];
        const _customDcsHandlerA = window.term.parser.registerDcsHandler({intermediates:'+', final: 'p'}, (data, params) => {
          window._customDcsHandlerCallStack.push(['A', params, data]);
          return false;
        });
        const _customDcsHandlerB = window.term.parser.registerDcsHandler({intermediates:'+', final: 'p'}, (data, params) => {
          window._customDcsHandlerCallStack.push(['B', params, data]);
          return true;
        });
        const _customDcsHandlerC = window.term.parser.registerDcsHandler({intermediates:'+', final: 'p'}, (data, params) => {
          window._customDcsHandlerCallStack.push(['C', params, data]);
          return false;
        });
      `);
      await writeSync(page, '\x1bP1;2+psome data\x1b\\\\');
      assert.deepEqual(await page.evaluate(`window._customDcsHandlerCallStack`), [
        ['C', [1, 2], 'some data'],
        ['B', [1, 2], 'some data']
      ]);
    });
    it('async', async () => {
      await page.evaluate(`
        window.term.reset();
        window._customDcsHandlerCallStack = [];
        const _customDcsHandlerA = window.term.parser.registerDcsHandler({intermediates:'+', final: 'q'}, (data, params) => {
          window._customDcsHandlerCallStack.push(['A', params, data]);
          return false;
        });
        const _customDcsHandlerB = window.term.parser.registerDcsHandler({intermediates:'+', final: 'q'}, async (data, params) => {
          await new Promise(res => setTimeout(res, 50));
          window._customDcsHandlerCallStack.push(['B', params, data]);
          return false;
        });
        const _customDcsHandlerC = window.term.parser.registerDcsHandler({intermediates:'+', final: 'q'}, (data, params) => {
          window._customDcsHandlerCallStack.push(['C', params, data]);
          return false;
        });
      `);
      await writeSync(page, '\x1bP1;2+qsome data\x1b\\\\');
      assert.deepEqual(await page.evaluate(`window._customDcsHandlerCallStack`), [
        ['C', [1, 2], 'some data'],
        ['B', [1, 2], 'some data'],
        ['A', [1, 2], 'some data']
      ]);
    });
  });
  describe('registerEscHandler', () => {
    it('should respects return value', async () => {
      await page.evaluate(`
        window.term.reset();
        window._customEscHandlerCallStack = [];
        const _customEscHandlerA = window.term.parser.registerEscHandler({intermediates:'(', final: 'B'}, () => {
          window._customEscHandlerCallStack.push('A');
          return false;
        });
        const _customEscHandlerB = window.term.parser.registerEscHandler({intermediates:'(', final: 'B'}, () => {
          window._customEscHandlerCallStack.push('B');
          return true;
        });
        const _customEscHandlerC = window.term.parser.registerEscHandler({intermediates:'(', final: 'B'}, () => {
          window._customEscHandlerCallStack.push('C');
          return false;
        });
      `);
      await writeSync(page, '\x1b(B');
      assert.deepEqual(await page.evaluate(`window._customEscHandlerCallStack`), ['C', 'B']);
    });
    it('async', async () => {
      await page.evaluate(`
        window.term.reset();
        window._customEscHandlerCallStack = [];
        const _customEscHandlerA = window.term.parser.registerEscHandler({intermediates:'(', final: 'Z'}, () => {
          window._customEscHandlerCallStack.push('A');
          return false;
        });
        const _customEscHandlerB = window.term.parser.registerEscHandler({intermediates:'(', final: 'Z'}, async () => {
          await new Promise(res => setTimeout(res, 50));
          window._customEscHandlerCallStack.push('B');
          return false;
        });
        const _customEscHandlerC = window.term.parser.registerEscHandler({intermediates:'(', final: 'Z'}, () => {
          window._customEscHandlerCallStack.push('C');
          return false;
        });
      `);
      await writeSync(page, '\x1b(Z');
      assert.deepEqual(await page.evaluate(`window._customEscHandlerCallStack`), ['C', 'B', 'A']);
    });
  });
  describe('registerOscHandler', () => {
    it('should respects return value', async () => {
      await page.evaluate(`
        window.term.reset();
        window._customOscHandlerCallStack = [];
        const _customOscHandlerA = window.term.parser.registerOscHandler(1234, data => {
          window._customOscHandlerCallStack.push(['A', data]);
          return false;
        });
        const _customOscHandlerB = window.term.parser.registerOscHandler(1234, data => {
          window._customOscHandlerCallStack.push(['B', data]);
          return true;
        });
        const _customOscHandlerC = window.term.parser.registerOscHandler(1234, data => {
          window._customOscHandlerCallStack.push(['C', data]);
          return false;
        });
      `);
      await writeSync(page, '\x1b]1234;some data\x07');
      assert.deepEqual(await page.evaluate(`window._customOscHandlerCallStack`), [
        ['C', 'some data'],
        ['B', 'some data']
      ]);
    });
    it('async', async () => {
      await page.evaluate(`
        window.term.reset();
        window._customOscHandlerCallStack = [];
        const _customOscHandlerA = window.term.parser.registerOscHandler(666, data => {
          window._customOscHandlerCallStack.push(['A', data]);
          return false;
        });
        const _customOscHandlerB = window.term.parser.registerOscHandler(666, async data => {
          await new Promise(res => setTimeout(res, 50));
          window._customOscHandlerCallStack.push(['B', data]);
          return false;
        });
        const _customOscHandlerC = window.term.parser.registerOscHandler(666, data => {
          window._customOscHandlerCallStack.push(['C', data]);
          return false;
        });
      `);
      await writeSync(page, '\x1b]666;some data\x07');
      assert.deepEqual(await page.evaluate(`window._customOscHandlerCallStack`), [
        ['C', 'some data'],
        ['B', 'some data'],
        ['A', 'some data']
      ]);
    });
  });
});