import { getParameter } from '../../lib/secrets';
import { plexUrl } from './plex';
import { err, ok, Result } from 'neverthrow';
import {
  ErrorWithCode,
  newError,
  PlexErrors,
} from 'web-shared/src/types/errors';

export const getArtwork = async (
  path: string,
): Promise<
  Result<{ data: ArrayBuffer; contentType: string }, ErrorWithCode<PlexErrors>>
> => {
  try {
    const plexToken = await getParameter('/web-api/plex-api-token', true);

    if (plexToken.isErr()) {
      return err(newError('PlexTokenError', 'Unable to fetch plex token'));
    }

    const response = await fetch(
      `${plexUrl}/${path}?X-Plex-Token=${plexToken.value}`,
      {
        method: 'GET',
      },
    );

    if (!response.ok) {
      return err(
        newError<PlexErrors>('ArtworkNotFound', 'Unable to fetch artwork'),
      );
    }

    const data = await response.arrayBuffer();
    const contentType = response.headers.get('Content-Type') || 'image/png';

    if (!['image/png', 'image/jpg', 'image/jpeg'].includes(contentType)) {
      return err(
        newError<PlexErrors>(
          'UnexpectedMimeType',
          `Received unexpected contentType`,
          { contentType },
        ),
      );
    }

    return ok({ data, contentType });
  } catch (error) {
    return err(
      newError<PlexErrors>('ServerError', 'An unexpected error occured', {
        error,
      }),
    );
  }
};