/*
Copyright The Helm Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package storage

import (
	"os"
	"testing"

	"github.com/stretchr/testify/suite"
)

type AmazonTestSuite struct {
	suite.Suite
	BrokenAmazonS3Backend   *AmazonS3Backend
	NoPrefixAmazonS3Backend *AmazonS3Backend
	SSEAmazonS3Backend      *AmazonS3Backend
}

func (suite *AmazonTestSuite) SetupSuite() {
	backend := NewAmazonS3Backend("fake-bucket-cant-exist-fbce123", "", "us-east-1", "", "")
	suite.BrokenAmazonS3Backend = backend

	s3Bucket := os.Getenv("TEST_STORAGE_AMAZON_BUCKET")
	s3Region := os.Getenv("TEST_STORAGE_AMAZON_REGION")
	backend = NewAmazonS3Backend(s3Bucket, "", s3Region, "", "")
	suite.NoPrefixAmazonS3Backend = backend

	backend = NewAmazonS3Backend(s3Bucket, "ssetest", s3Region, "", "AES256")
	suite.SSEAmazonS3Backend = backend

	data := []byte("some object")
	path := "deleteme.txt"

	err := suite.NoPrefixAmazonS3Backend.PutObject(path, data)
	suite.Nil(err, "no error putting deleteme.txt using AmazonS3 backend")

	err = suite.SSEAmazonS3Backend.PutObject(path, data)
	suite.Nil(err, "no error putting deleteme.txt using AmazonS3 backend (SSE)")
}

func (suite *AmazonTestSuite) TearDownSuite() {
	err := suite.NoPrefixAmazonS3Backend.DeleteObject("deleteme.txt")
	suite.Nil(err, "no error deleting deleteme.txt using AmazonS3 backend")

	err = suite.SSEAmazonS3Backend.DeleteObject("deleteme.txt")
	suite.Nil(err, "no error deleting deleteme.txt using AmazonS3 backend")
}

func (suite *AmazonTestSuite) TestListObjects() {
	_, err := suite.BrokenAmazonS3Backend.ListObjects("")
	suite.NotNil(err, "cannot list objects with bad bucket")

	_, err = suite.NoPrefixAmazonS3Backend.ListObjects("")
	suite.Nil(err, "can list objects with good bucket, no prefix")

	_, err = suite.SSEAmazonS3Backend.ListObjects("")
	suite.Nil(err, "can list objects with good bucket, SSE")
}

func (suite *AmazonTestSuite) TestGetObject() {
	_, err := suite.BrokenAmazonS3Backend.GetObject("this-file-cannot-possibly-exist.tgz")
	suite.NotNil(err, "cannot get objects with bad bucket")

	obj, err := suite.SSEAmazonS3Backend.GetObject("deleteme.txt")
	suite.Equal([]byte("some object"), obj.Content, "able to get object with SSE")
}

func (suite *AmazonTestSuite) TestPutObject() {
	err := suite.BrokenAmazonS3Backend.PutObject("this-file-will-not-upload.txt", []byte{})
	suite.NotNil(err, "cannot put objects with bad bucket")
}

func TestAmazonStorageTestSuite(t *testing.T) {
	if os.Getenv("TEST_CLOUD_STORAGE") == "1" &&
		os.Getenv("TEST_STORAGE_AMAZON_BUCKET") != "" &&
		os.Getenv("TEST_STORAGE_AMAZON_REGION") != "" {
		suite.Run(t, new(AmazonTestSuite))
	}
}
