var skipper = require('skipper');

function OKImageService(options) {
  if (!(this instanceof OKImageService)) return new OKImageService(options);
  options = options || {};
  if (!options.express)
    throw new Error('Express not provided to OKImageService');
  if (!options.s3)
    throw new Error('S3 configuration not provided to OKImageService');
  var express = options.express;

  var router = express.Router();

  router.use(skipper());

  router.post('/', function(req, res) {
    // req should have a method `file` on it which is
    // provided by skipper. Use that to do AWS stuff
    req.file('image').upload({
      adapter: require('skipper-s3'),
      key: options.s3.key,
      secret: options.s3.secret,
      bucket: options.s3.bucket,
      dirname: options.s3.dirname,
      maxBytes: options.s3.maxbytes,
      headers: {
        'x-amz-acl': 'public-read'
      }
    }, function (err, uploadedFiles) {
      res.json(uploadedFiles);
    });
  });

  this._middleware = router;
}

OKImageService.prototype.middleware = function() {
  return this._middleware;
};

module.exports = {
  OKImageService: OKImageService
};