import Joi from 'joi'
import { renderDownloadsBadge } from '../downloads.js'
import { nonNegativeInteger } from '../validators.js'
import { BaseJsonService, pathParams } from '../index.js'
import {
  dockerBlue,
  buildDockerUrl,
  getDockerHubUser,
} from './docker-helpers.js'

const pullsSchema = Joi.object({
  pull_count: nonNegativeInteger,
}).required()

export default class DockerPulls extends BaseJsonService {
  static category = 'downloads'
  static route = buildDockerUrl('pulls')
  static openApi = {
    '/docker/pulls/{user}/{repo}': {
      get: {
        summary: 'Docker Pulls',
        parameters: pathParams(
          {
            name: 'user',
            example: '_',
          },
          {
            name: 'repo',
            example: 'ubuntu',
          },
        ),
      },
    },
  }

  static _cacheLength = 14400

  static defaultBadgeData = { label: 'docker pulls' }

  static render({ count: downloads }) {
    return renderDownloadsBadge({ downloads, colorOverride: dockerBlue })
  }

  async fetch({ user, repo }) {
    return this._requestJson({
      schema: pullsSchema,
      url: `https://hub.docker.com/v2/repositories/${getDockerHubUser(
        user,
      )}/${repo}`,
      httpErrors: { 404: 'repo not found' },
    })
  }

  async handle({ user, repo }) {
    const data = await this.fetch({ user, repo })
    return this.constructor.render({ count: data.pull_count })
  }
}