'use strict'

const awsRequest = require('@serverless/test/aws-request')
const S3Service = require('aws-sdk').S3

async function createBucket(bucket) {
  return awsRequest(S3Service, 'createBucket', { Bucket: bucket })
}

async function createAndRemoveInBucket(bucket, opts = {}) {
  const prefix = opts.prefix || ''
  const suffix = opts.suffix || ''
  const fileName = opts.fileName || 'object'

  const params = {
    Bucket: bucket,
    Key: `${prefix}${fileName}${suffix}`,
    Body: 'hello world',
  }

  return awsRequest(S3Service, 'putObject', params).then(() => {
    delete params.Body
    return awsRequest(S3Service, 'deleteObject', params)
  })
}

async function emptyBucket(bucket) {
  return awsRequest(S3Service, 'listObjects', { Bucket: bucket }).then(
    (data) => {
      const items = data.Contents
      const numItems = items.length
      if (numItems) {
        const keys = items.map((item) => Object.assign({}, { Key: item.Key }))
        return awsRequest(S3Service, 'deleteObjects', {
          Bucket: bucket,
          Delete: {
            Objects: keys,
          },
        })
      }
      return null
    },
  )
}

async function deleteBucket(bucket) {
  return emptyBucket(bucket).then(() =>
    awsRequest(S3Service, 'deleteBucket', { Bucket: bucket }),
  )
}

module.exports = {
  createBucket,
  createAndRemoveInBucket,
  emptyBucket,
  deleteBucket,
}