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import { Router, Request, Response } from 'express';
import { AIOStreams, SubtitleResponse } from '@aiostreams/core';
import { createLogger } from '@aiostreams/core';
import { StremioTransformer } from '@aiostreams/core';
import { stremioSubtitleRateLimiter } from '../../middlewares/ratelimit';

const logger = createLogger('server');
const router = Router();

router.use(stremioSubtitleRateLimiter);

router.get(
  '/:type/:id/:extras?.json',
  async (req: Request, res: Response<SubtitleResponse>, next) => {
    if (!req.userData) {
      res.status(200).json(
        StremioTransformer.createDynamicError('subtitles', {
          errorDescription: 'Please configure the addon first',
        })
      );
      return;
    }
    const transformer = new StremioTransformer(req.userData);
    try {
      const { type, id } = req.params;
      const { videoHash, videoSize } = req.query;
      const extras = [videoHash, videoSize].filter(Boolean).join(',');

      res
        .status(200)
        .json(
          transformer.transformSubtitles(
            await (
              await new AIOStreams(req.userData).initialise()
            ).getSubtitles(type, id, extras)
          )
        );
    } catch (error) {
      let errorMessage =
        error instanceof Error ? error.message : 'Unknown error';
      let errors = [
        {
          description: errorMessage,
        },
      ];
      if (transformer.showError('subtitles', errors)) {
        logger.error(
          `Unexpected error during subtitle retrieval: ${errorMessage}`
        );
        res.status(200).json(
          StremioTransformer.createDynamicError('subtitles', {
            errorDescription: errorMessage,
          })
        );
        return;
      }
      next(error);
    }
  }
);

export default router;