spee.ch/helpers/serveHelpers.js

const logger = require('winston');

function createOpenGraphInfo ({ fileType, claimId, name, fileName, fileExt }) {
  return {
    embedUrl     : `https://spee.ch/embed/${claimId}/${name}`,
    showUrl      : `https://spee.ch/${claimId}/${name}`,
    source       : `https://spee.ch/${claimId}/${name}${fileExt}`,
    directFileUrl: `https://spee.ch/media/${fileName}`,
  };
}

module.exports = {
  serveFile ({ fileName, fileType, filePath }, res) {
    logger.info(`serving file ${fileName}`);
    // set default options
    let options = {
      headers: {
        'X-Content-Type-Options': 'nosniff',
        'Content-Type'          : fileType,
      },
    };
    // adjust default options as needed
    switch (fileType) {
      case 'image/jpeg':
      case 'image/gif':
      case 'image/png':
      case 'video/mp4':
        break;
      default:
        logger.warn('sending file with unknown type as .jpeg');
        options['headers']['Content-Type'] = 'image/jpeg';
        break;
    }
    // send the file
    res.status(200).sendFile(filePath, options);
  },
  showFile (fileInfo, res) {
    const openGraphInfo = createOpenGraphInfo(fileInfo);
    res.status(200).render('show', { layout: 'show', fileInfo, openGraphInfo });
  },
  showFileLite (fileInfo, res) {
    const openGraphInfo = createOpenGraphInfo(fileInfo);
    res.status(200).render('showLite', { layout: 'show', fileInfo, openGraphInfo });
  },
};