// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
package main

import (
	"encoding/json"
	"io/ioutil"
	"testing"
	"time"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/s3"
	"github.com/aws/aws-sdk-go/service/s3/s3iface"

	"github.com/google/uuid"
)

// Define a mock struct to be used in your unit tests of myFunc.
type mockS3Client struct {
	s3iface.S3API
}

func (m *mockS3Client) PutObjectAcl(*s3.PutObjectAclInput) (*s3.PutObjectAclOutput, error) {
	resp := s3.PutObjectAclOutput{
		RequestCharged: aws.String(""),
	}

	return &resp, nil
}

type Config struct {
	Bucket  string `json:"Name"`
	Key     string `json:"Key"`
	Address string `json:"Address"`
}

var configFileName = "config.json"

var globalConfig Config

func populateConfiguration(t *testing.T) error {
	content, err := ioutil.ReadFile(configFileName)
	if err != nil {
		return err
	}

	text := string(content)

	err = json.Unmarshal([]byte(text), &globalConfig)
	if err != nil {
		return err
	}

	t.Log("Bucket:     " + globalConfig.Bucket)
	t.Log("Key:        " + globalConfig.Key)
	t.Log("Address:    " + globalConfig.Address)

	return nil
}

func TestPubObjectAcl(t *testing.T) {
	thisTime := time.Now()
	nowString := thisTime.Format("2006-01-02 15:04:05 Monday")
	t.Log("Starting unit test at " + nowString)

	err := populateConfiguration(t)
	if err != nil {
		t.Fatal(err)
	}

	if globalConfig.Bucket == "" || globalConfig.Key == "" || globalConfig.Address == "" {
		// mock resources
		id := uuid.New()
		globalConfig.Bucket = "test-bucket-" + id.String()
		globalConfig.Key = "random"
		globalConfig.Address = "somebody@somewhere"

		mockSvc := &mockS3Client{}

		err = PutObjectACL(mockSvc, &globalConfig.Bucket, &globalConfig.Key, &globalConfig.Address)
		if err != nil {
			t.Fatal(err)
		}

		t.Log("Congratulations. You gave user with email address", globalConfig.Address, "read permission to bucket", globalConfig.Bucket, "object", globalConfig.Key)
	} else {
		sess := session.Must(session.NewSessionWithOptions(session.Options{
			SharedConfigState: session.SharedConfigEnable,
		}))

		svc := s3.New(sess)

		err = PutObjectACL(svc, &globalConfig.Bucket, &globalConfig.Key, &globalConfig.Address)
		if err != nil {

			t.Fatal(err)
		}

		t.Log("Congratulations. You gave user with email address", globalConfig.Address, "read permission to bucket", globalConfig.Bucket, "object", globalConfig.Key)
	}

}
