/**
 * @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, JsonFileReporter, MeasureValues, Options, SampleDescription} from '../../index';

describe('file reporter', () => {
  let loggedFile: any;

  function createReporter({
    sampleId,
    descriptions,
    metrics,
    path,
  }: {
    sampleId: string;
    descriptions: {[key: string]: any}[];
    metrics: {[key: string]: string};
    path: string;
  }) {
    const providers = [
      JsonFileReporter.PROVIDERS,
      {
        provide: SampleDescription,
        useValue: new SampleDescription(sampleId, descriptions, metrics),
      },
      {provide: JsonFileReporter.PATH, useValue: path},
      {provide: Options.NOW, useValue: () => new Date(1234)},
      {
        provide: Options.WRITE_FILE,
        useValue: (filename: string, content: string) => {
          loggedFile = {'filename': filename, 'content': content};
          return Promise.resolve(null);
        },
      },
    ];
    return Injector.create({providers}).get<JsonFileReporter>(JsonFileReporter);
  }

  it('should write all data into a file', (done) => {
    createReporter({
      sampleId: 'someId',
      descriptions: [{'a': 2}],
      path: 'somePath',
      metrics: {'a': 'script time', 'b': 'render time'},
    }).reportSample(
      [mv(0, 0, {'a': 3, 'b': 6})],
      [mv(0, 0, {'a': 3, 'b': 6}), mv(1, 1, {'a': 5, 'b': 9})],
    );
    const regExp = /somePath\/someId_\d+\.json/;
    expect(loggedFile['filename'].match(regExp) != null).toBe(true);
    const parsedContent = JSON.parse(loggedFile['content']) as {[key: string]: any};
    expect(parsedContent).toEqual({
      'description': {
        'id': 'someId',
        'description': {'a': 2},
        'metrics': {'a': 'script time', 'b': 'render time'},
      },
      'metricsText': '                 a |                  b',
      'stats': {'a': '4.00+-25%', 'b': '7.50+-20%'},
      'statsText': '         4.00+-25% |          7.50+-20%',
      'completeSample': [
        {'timeStamp': '1970-01-01T00:00:00.000Z', 'runIndex': 0, 'values': {'a': 3, 'b': 6}},
      ],
      'validSample': [
        {'timeStamp': '1970-01-01T00:00:00.000Z', 'runIndex': 0, 'values': {'a': 3, 'b': 6}},
        {'timeStamp': '1970-01-01T00:00:00.001Z', 'runIndex': 1, 'values': {'a': 5, 'b': 9}},
      ],
      'validSampleTexts': [
        '              3.00 |               6.00',
        '              5.00 |               9.00',
      ],
    });
    done();
  });
});

function mv(runIndex: number, time: number, values: {[key: string]: number}) {
  return new MeasureValues(runIndex, new Date(time), values);
}
