import { GCMockModule } from '@core/mocks/gc-module.mock';
import { FeatureFlag, FeatureFlags } from '@core/typings/feature-flag.typing';
import { FeatureStatus } from '@yourcause/common/feature-flag';
import { BeforeEach, Spec, TestCase } from '@yourcause/test-decorators';
import { DescribeAngularService } from '@yourcause/test-decorators/angular';
import { expect, spy } from 'chai';
import { FeatureFlagsService } from './feature-flags.service';

enum FakeFeatureFlags {
  TestFlag = 1,
  TestFlag2 = 2,
  TestFlag3 = 3
}

@DescribeAngularService(FeatureFlagsService, {
  imports: [GCMockModule]
})
export class FeatureFlagsServiceSpec implements Spec<FeatureFlagsServiceSpec, FeatureFlagsService> {
  featureFlagResponse: FeatureFlag[] = [{
    name: 'Test flag',
    statusDate: '',
    updatedDate: '',
    feature: FakeFeatureFlags.TestFlag as any,
    status: FeatureStatus.OFF
  }, {
    name: 'Test flag 2',
    statusDate: '',
    updatedDate: '',
    feature: FakeFeatureFlags.TestFlag2 as any,
    status: FeatureStatus.CANARY
  }, {
    name: 'Test flag 3',
    statusDate: '',
    updatedDate: '',
    feature: FakeFeatureFlags.TestFlag3 as any,
    status: FeatureStatus.ON
  }];

  @BeforeEach()
  mock (service: FeatureFlagsService) {
    service['resources']['getFeatureFlags'] = async () => this.featureFlagResponse;
    service['resources']['updateFeatureFlagStatus'] = async () => {};
  }

  @TestCase('should call common lib on fetch')
  async testShouldCallCommonOnFetch (service: FeatureFlagsService) {
    const spy2 = spy.on(service['featureFlagService'], 'setFeatureFlags');
    await service.fetchFlags();

    expect(spy2).to.have.been.called();
  }


  @TestCase('should refetch when a flag is updated')
  async testShouldRefetchOnUpdate (service: FeatureFlagsService) {
    const spy2 = spy.on(service, 'fetchFlags');
    await service.updateFlag(FeatureFlags.TestFlag, FeatureStatus.ON);

    expect(spy2).to.have.been.called();
  }

  @TestCase('should be able to properly map flags to common model')
  testShouldMapFlagsToCommon (service: FeatureFlagsService) {
    const response = service['adaptGCFeatureFlagsToCommonFlags'](this.featureFlagResponse);

    expect(response).to.deep.equal({
      [FakeFeatureFlags.TestFlag]: FeatureStatus.OFF,
      [FakeFeatureFlags.TestFlag2]: FeatureStatus.CANARY,
      [FakeFeatureFlags.TestFlag3]: FeatureStatus.ON
    });
  }
}