doccano/frontend/repositories/download/apiDownloadRepository.ts

import ApiService from '@/services/api.service'
import { DownloadRepository } from '@/domain/models/download/downloadRepository'

export class APIDownloadRepository implements DownloadRepository {
  constructor(
    private readonly request = ApiService
  ) {}

  async prepare(projectId: string, format: string, exportApproved: boolean): Promise<string> {
    const url = `/projects/${projectId}/download`
    const data = {
      format,
      exportApproved,
    }
    const response = await this.request.post(url, data)
    return response.data.task_id
  }

  async download(projectId: string, taskId: string): Promise<void> {
    const url = `/projects/${projectId}/download?taskId=${taskId}`
    const config = {
      responseType: 'blob',
    }
    const response = await this.request.get(url, config)
    const downloadUrl = window.URL.createObjectURL(new Blob([response.data]))
    const link = document.createElement('a')
    link.href = downloadUrl
    link.setAttribute('download', `${taskId}.zip`)
    document.body.appendChild(link)
    link.click()
  }
}