graphbrainz/src/extensions/cover-art-archive/index.js

import schema from './schema'
import resolvers from './resolvers'
import createLoaders from './loaders'
import CoverArtArchiveClient from './client'
import { ONE_DAY } from '../../util'

export default {
  name: 'Cover Art Archive',
  description:
    'Retrieve cover art images for releases from the [Cover Art Archive](https://coverartarchive.org/).',
  extendContext (context, { coverArtClient, coverArtArchive = {} } = {}) {
    const client = coverArtClient || new CoverArtArchiveClient(coverArtArchive)
    const cacheSize = parseInt(
      process.env.COVER_ART_ARCHIVE_CACHE_SIZE || process.env.GRAPHBRAINZ_CACHE_SIZE || 8192,
      10
    )
    const cacheTTL = parseInt(
      process.env.COVER_ART_ARCHIVE_CACHE_TTL || process.env.GRAPHBRAINZ_CACHE_TTL || ONE_DAY,
      10
    )
    return {
      ...context,
      // Add the client instance directly onto `context` for backwards
      // compatibility.
      coverArtClient: client,
      loaders: {
        ...context.loaders,
        ...createLoaders({ client, cacheSize, cacheTTL })
      }
    }
  },
  extendSchema: {
    schemas: [schema],
    resolvers
  }
}