/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

import {Injector, IOsDriverExtension, WebDriverAdapter, WebDriverExtension} from '../../index';
import {TraceEventFactory} from '../trace_event_factory';

describe('ios driver extension', () => {
  let log: any[];
  let extension: IOsDriverExtension;

  const normEvents = new TraceEventFactory('timeline', 'pid0');

  function createExtension(perfRecords: any[] | null = null): WebDriverExtension {
    if (!perfRecords) {
      perfRecords = [];
    }
    log = [];
    extension = Injector.create({
      providers: [
        IOsDriverExtension.PROVIDERS,
        {provide: WebDriverAdapter, useValue: new MockDriverAdapter(log, perfRecords)},
      ],
    }).get(IOsDriverExtension);
    return extension;
  }

  it('should throw on forcing gc', () => {
    expect(() => createExtension().gc()).toThrowError('Force GC is not supported on iOS');
  });

  it('should mark the timeline via console.time()', (done) => {
    createExtension()
      .timeBegin('someName')
      .then((_) => {
        expect(log).toEqual([['executeScript', `console.time('someName');`]]);
        done();
      });
  });

  it('should mark the timeline via console.timeEnd()', (done) => {
    createExtension()
      .timeEnd('someName', null)
      .then((_) => {
        expect(log).toEqual([['executeScript', `console.timeEnd('someName');`]]);
        done();
      });
  });

  it('should mark the timeline via console.time() and console.timeEnd()', (done) => {
    createExtension()
      .timeEnd('name1', 'name2')
      .then((_) => {
        expect(log).toEqual([['executeScript', `console.timeEnd('name1');console.time('name2');`]]);
        done();
      });
  });

  describe('readPerfLog', () => {
    it('should execute a dummy script before reading them', (done) => {
      // TODO(tbosch): This seems to be a bug in ChromeDriver:
      // Sometimes it does not report the newest events of the performance log
      // to the WebDriver client unless a script is executed...
      createExtension([])
        .readPerfLog()
        .then((_) => {
          expect(log).toEqual([
            ['executeScript', '1+1'],
            ['logs', 'performance'],
          ]);
          done();
        });
    });

    it('should report FunctionCall records as "script"', (done) => {
      createExtension([durationRecord('FunctionCall', 1, 5)])
        .readPerfLog()
        .then((events) => {
          expect(events).toEqual([normEvents.start('script', 1), normEvents.end('script', 5)]);
          done();
        });
    });

    it('should ignore FunctionCalls from webdriver', (done) => {
      createExtension([internalScriptRecord(1, 5)])
        .readPerfLog()
        .then((events) => {
          expect(events).toEqual([]);
          done();
        });
    });

    it('should report begin time', (done) => {
      createExtension([timeBeginRecord('someName', 12)])
        .readPerfLog()
        .then((events) => {
          expect(events).toEqual([normEvents.markStart('someName', 12)]);
          done();
        });
    });

    it('should report end timestamps', (done) => {
      createExtension([timeEndRecord('someName', 12)])
        .readPerfLog()
        .then((events) => {
          expect(events).toEqual([normEvents.markEnd('someName', 12)]);
          done();
        });
    });

    [
      'RecalculateStyles',
      'Layout',
      'UpdateLayerTree',
      'Paint',
      'Rasterize',
      'CompositeLayers',
    ].forEach((recordType) => {
      it(`should report ${recordType}`, (done) => {
        createExtension([durationRecord(recordType, 0, 1)])
          .readPerfLog()
          .then((events) => {
            expect(events).toEqual([normEvents.start('render', 0), normEvents.end('render', 1)]);
            done();
          });
      });
    });

    it('should walk children', (done) => {
      createExtension([durationRecord('FunctionCall', 1, 5, [timeBeginRecord('someName', 2)])])
        .readPerfLog()
        .then((events) => {
          expect(events).toEqual([
            normEvents.start('script', 1),
            normEvents.markStart('someName', 2),
            normEvents.end('script', 5),
          ]);
          done();
        });
    });

    it('should match safari browsers', () => {
      expect(createExtension().supports({'browserName': 'safari'})).toBe(true);

      expect(createExtension().supports({'browserName': 'Safari'})).toBe(true);
    });
  });
});

function timeBeginRecord(name: string, time: number) {
  return {'type': 'Time', 'startTime': time, 'data': {'message': name}};
}

function timeEndRecord(name: string, time: number) {
  return {'type': 'TimeEnd', 'startTime': time, 'data': {'message': name}};
}

function durationRecord(
  type: string,
  startTime: number,
  endTime: number,
  children: any[] | null = null,
) {
  if (!children) {
    children = [];
  }
  return {'type': type, 'startTime': startTime, 'endTime': endTime, 'children': children};
}

function internalScriptRecord(startTime: number, endTime: number) {
  return {
    'type': 'FunctionCall',
    'startTime': startTime,
    'endTime': endTime,
    'data': {'scriptName': 'InjectedScript'},
  };
}

class MockDriverAdapter extends WebDriverAdapter {
  constructor(
    private _log: any[],
    private _perfRecords: any[],
  ) {
    super();
  }

  override executeScript(script: string) {
    this._log.push(['executeScript', script]);
    return Promise.resolve(null);
  }

  override logs(type: string): Promise<any[]> {
    this._log.push(['logs', type]);
    if (type === 'performance') {
      return Promise.resolve(
        this._perfRecords.map(function (record) {
          return {
            'message': JSON.stringify(
              {'message': {'method': 'Timeline.eventRecorded', 'params': {'record': record}}},
              null,
              2,
            ),
          };
        }),
      );
    } else {
      return null!;
    }
  }
}
