import { GCMockModule } from '@core/mocks/gc-module.mock';
import { FileStatus, FileUploadEvent } from '@core/typings/file.typing';
import { YcFile } from '@yourcause/common';
import { Spec, TestCase } from '@yourcause/test-decorators';
import { DescribeAngularService } from '@yourcause/test-decorators/angular';
import { expect } from 'chai';
import { BehaviorSubject } from 'rxjs';
import { FileUploadProgressService } from './file-upload-progress.service';

@DescribeAngularService(FileUploadProgressService, {
  imports: [GCMockModule]
})
export class FileUploadProgressServiceSpec implements Spec<FileUploadProgressServiceSpec, FileUploadProgressService> {
  // validators
  @TestCase('should reject invalid extensions')
  async testShouldRejectInvalidFile (service: FileUploadProgressService) {
    const fileName = 'some-file.with-invalid-extension';
    const uploadRequest = new YcFile(
      fileName,
      new File([], fileName)
    );

    const isValid = service['checkIfFileValid'](uploadRequest);

    expect(isValid).to.be.false;

    expect((uploadRequest['_statusClass$'] as BehaviorSubject<string>).value).to.equal('danger');
  }

  @TestCase('should reject too large files')
  async testShouldRejectTooLargeFile (service: FileUploadProgressService) {
    const fileName = 'some-file.pdf';
    service['maxFileSizeBytes'] = 10;
    const uploadRequest = new YcFile(
      fileName,
      new File([Array(service['maxFileSizeBytes'] + 1).fill('0').join('')], fileName)
    );

    const isValid = service['checkIfFileValid'](uploadRequest);

    expect(isValid).to.be.false;

    expect((uploadRequest['_statusClass$'] as BehaviorSubject<string>).value).to.equal('danger');
  }

  @TestCase('should close request when upload canceled')
  async testShouldCloseRequestWhenCanceled (service: FileUploadProgressService) {
    const upload = new BehaviorSubject<FileUploadEvent<void>>({
      status: FileStatus.AWAITING_API
    });
    const uploadRequest = new YcFile(
      'file.pdf',
      new File([Array(10).fill('0').join('')], 'file.pdf')
    );
    let caught = false;
    const prom = service.processFileUploadRequest(
      upload,
      uploadRequest
    ).catch(e => {
      caught = true;

      expect(upload['observers'].length).to.equal(0);
    });

    uploadRequest.cancel();

    await prom;

    expect(caught).to.be.true;
  }
}