var util = require('util')

var syrup = require('syrup')
var Promise = require('bluebird')
var request = require('request')

var logger = require('../../../util/logger')

module.exports = syrup.serial()
  .define(function(options) {
    var log = logger.createLogger('device:support:storage')
    var plugin = Object.create(null)

    plugin.store = function(type, stream, meta) {
      var resolver = Promise.defer()

      var req = request.post({
          url: util.format('%sapi/v1/s/%s', options.storageUrl, type)
        }
      , function(err, res, body) {
          if (err) {
            log.error('Upload failed', err.stack)
            resolver.reject(err)
          }
          else if (res.statusCode !== 201) {
            log.error('Upload failed: HTTP %d', res.statusCode)
            resolver.reject(new Error(util.format(
              'Upload failed: HTTP %d'
            , res.statusCode
            )))
          }
          else {
            try {
              var result = JSON.parse(body)
              log.info('Uploaded to %s', result.resources.file.href)
              resolver.resolve(result.resources.file)
            }
            catch (err) {
              log.error('Invalid JSON in response', err.stack, body)
              resolver.reject(err)
            }
          }
        }
      )

      req.form()
        .append('file', stream, meta)

      return resolver.promise
    }

    return plugin
  })