package remote

import (
	"testing"

	awssdk "github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/awserr"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/s3"
	"github.com/cloudskiff/driftctl/mocks"
	"github.com/cloudskiff/driftctl/pkg/remote/aws"
	"github.com/cloudskiff/driftctl/pkg/remote/cache"
	"github.com/cloudskiff/driftctl/pkg/remote/common"
	tf "github.com/cloudskiff/driftctl/pkg/remote/terraform"
	testresource "github.com/cloudskiff/driftctl/test/resource"
	terraform2 "github.com/cloudskiff/driftctl/test/terraform"
	"github.com/stretchr/testify/mock"

	"github.com/cloudskiff/driftctl/pkg/remote/aws/client"
	"github.com/cloudskiff/driftctl/pkg/remote/aws/repository"
	"github.com/cloudskiff/driftctl/pkg/resource"
	resourceaws "github.com/cloudskiff/driftctl/pkg/resource/aws"

	"github.com/cloudskiff/driftctl/pkg/terraform"
	"github.com/cloudskiff/driftctl/test"
	"github.com/cloudskiff/driftctl/test/goldenfile"
	"github.com/stretchr/testify/assert"
)

func TestS3Bucket(t *testing.T) {

	tests := []struct {
		test    string
		dirName string
		mocks   func(repository *repository.MockS3Repository)
		wantErr error
	}{
		{
			test: "multiple bucket", dirName: "aws_s3_bucket_multiple",
			mocks: func(repository *repository.MockS3Repository) {
				repository.On(
					"ListAllBuckets",
				).Return([]*s3.Bucket{
					{Name: awssdk.String("bucket-martin-test-drift")},
					{Name: awssdk.String("bucket-martin-test-drift2")},
					{Name: awssdk.String("bucket-martin-test-drift3")},
				}, nil)

				repository.On(
					"GetBucketLocation",
					"bucket-martin-test-drift",
				).Return(
					"eu-west-1",
					nil,
				)

				repository.On(
					"GetBucketLocation",
					"bucket-martin-test-drift2",
				).Return(
					"eu-west-3",
					nil,
				)

				repository.On(
					"GetBucketLocation",
					"bucket-martin-test-drift3",
				).Return(
					"ap-northeast-1",
					nil,
				)
			},
		},
		{
			test: "cannot list bucket", dirName: "s3_bucket_list",
			mocks: func(repository *repository.MockS3Repository) {
				repository.On("ListAllBuckets").Return(nil, awserr.NewRequestFailure(nil, 403, ""))
			},
			wantErr: nil,
		},
	}

	schemaRepository := testresource.InitFakeSchemaRepository("aws", "3.19.0")
	resourceaws.InitResourcesMetadata(schemaRepository)
	factory := terraform.NewTerraformResourceFactory(schemaRepository)
	deserializer := resource.NewDeserializer(factory)

	for _, c := range tests {
		t.Run(c.test, func(tt *testing.T) {
			shouldUpdate := c.dirName == *goldenfile.Update

			session := session.Must(session.NewSessionWithOptions(session.Options{
				SharedConfigState: session.SharedConfigEnable,
			}))

			scanOptions := ScannerOptions{Deep: true}
			providerLibrary := terraform.NewProviderLibrary()
			remoteLibrary := common.NewRemoteLibrary()

			// Initialize mocks
			alerter := &mocks.AlerterInterface{}
			alerter.On("SendAlert", mock.Anything, mock.Anything).Maybe().Return()
			fakeRepo := &repository.MockS3Repository{}
			c.mocks(fakeRepo)
			var repo repository.S3Repository = fakeRepo
			providerVersion := "3.19.0"
			realProvider, err := terraform2.InitTestAwsProvider(providerLibrary, providerVersion)
			if err != nil {
				t.Fatal(err)
			}
			provider := terraform2.NewFakeTerraformProvider(realProvider)
			provider.WithResponse(c.dirName)

			// Replace mock by real resources if we are in update mode
			if shouldUpdate {
				err := realProvider.Init()
				if err != nil {
					t.Fatal(err)
				}
				provider.ShouldUpdate()
				repo = repository.NewS3Repository(client.NewAWSClientFactory(session), cache.New(0))
			}

			remoteLibrary.AddEnumerator(aws.NewS3BucketEnumerator(repo, factory, tf.TerraformProviderConfig{
				Name:         "test",
				DefaultAlias: "eu-west-3",
			}))
			remoteLibrary.AddDetailsFetcher(resourceaws.AwsS3BucketResourceType, aws.NewS3BucketDetailsFetcher(provider, deserializer))

			s := NewScanner(nil, remoteLibrary, alerter, scanOptions)
			got, err := s.Resources()
			assert.Equal(tt, err, c.wantErr)
			if err != nil {
				return
			}
			test.TestAgainstGoldenFile(got, resourceaws.AwsS3BucketResourceType, c.dirName, provider, deserializer, shouldUpdate, tt)
		})
	}
}

func TestS3BucketInventory(t *testing.T) {

	tests := []struct {
		test    string
		dirName string
		mocks   func(repository *repository.MockS3Repository)
		wantErr error
	}{
		{
			test: "multiple bucket with multiple inventories", dirName: "s3_bucket_inventories_multiple",
			mocks: func(repository *repository.MockS3Repository) {
				repository.On(
					"ListAllBuckets",
				).Return([]*s3.Bucket{
					{Name: awssdk.String("bucket-martin-test-drift")},
					{Name: awssdk.String("bucket-martin-test-drift2")},
					{Name: awssdk.String("bucket-martin-test-drift3")},
				}, nil)

				repository.On(
					"GetBucketLocation",
					"bucket-martin-test-drift",
				).Return(
					"eu-west-1",
					nil,
				)

				repository.On(
					"GetBucketLocation",
					"bucket-martin-test-drift2",
				).Return(
					"eu-west-3",
					nil,
				)

				repository.On(
					"GetBucketLocation",
					"bucket-martin-test-drift3",
				).Return(
					"eu-west-1",
					nil,
				)

				repository.On(
					"ListBucketInventoryConfigurations",
					&s3.Bucket{Name: awssdk.String("bucket-martin-test-drift2")},
					"eu-west-3",
				).Return(
					[]*s3.InventoryConfiguration{
						{Id: awssdk.String("Inventory_Bucket2")},
						{Id: awssdk.String("Inventory2_Bucket2")},
					},
					nil,
				)
			},
		},
		{
			test: "cannot list bucket", dirName: "s3_bucket_inventories_list_bucket",
			mocks: func(repository *repository.MockS3Repository) {
				repository.On("ListAllBuckets").Return(nil, awserr.NewRequestFailure(nil, 403, ""))
			},
			wantErr: nil,
		},
		{
			test: "cannot list bucket inventories", dirName: "s3_bucket_inventories_list_inventories",
			mocks: func(repository *repository.MockS3Repository) {
				repository.On("ListAllBuckets").Return(
					[]*s3.Bucket{
						{Name: awssdk.String("bucket-martin-test-drift")},
					},
					nil,
				)
				repository.On(
					"GetBucketLocation",
					"bucket-martin-test-drift",
				).Return(
					"eu-west-3",
					nil,
				)
				repository.On(
					"ListBucketInventoryConfigurations",
					&s3.Bucket{Name: awssdk.String("bucket-martin-test-drift")},
					"eu-west-3",
				).Return(
					nil,
					awserr.NewRequestFailure(nil, 403, ""),
				)
			},
			wantErr: nil,
		},
	}

	schemaRepository := testresource.InitFakeSchemaRepository("aws", "3.19.0")
	resourceaws.InitResourcesMetadata(schemaRepository)
	factory := terraform.NewTerraformResourceFactory(schemaRepository)
	deserializer := resource.NewDeserializer(factory)

	for _, c := range tests {
		t.Run(c.test, func(tt *testing.T) {
			shouldUpdate := c.dirName == *goldenfile.Update

			session := session.Must(session.NewSessionWithOptions(session.Options{
				SharedConfigState: session.SharedConfigEnable,
			}))

			scanOptions := ScannerOptions{Deep: true}
			providerLibrary := terraform.NewProviderLibrary()
			remoteLibrary := common.NewRemoteLibrary()

			// Initialize mocks
			alerter := &mocks.AlerterInterface{}
			alerter.On("SendAlert", mock.Anything, mock.Anything).Maybe().Return()
			fakeRepo := &repository.MockS3Repository{}
			c.mocks(fakeRepo)
			var repo repository.S3Repository = fakeRepo
			providerVersion := "3.19.0"
			realProvider, err := terraform2.InitTestAwsProvider(providerLibrary, providerVersion)
			if err != nil {
				t.Fatal(err)
			}
			provider := terraform2.NewFakeTerraformProvider(realProvider)
			provider.WithResponse(c.dirName)

			// Replace mock by real resources if we are in update mode
			if shouldUpdate {
				err := realProvider.Init()
				if err != nil {
					t.Fatal(err)
				}
				provider.ShouldUpdate()
				repo = repository.NewS3Repository(client.NewAWSClientFactory(session), cache.New(0))
			}

			remoteLibrary.AddEnumerator(aws.NewS3BucketInventoryEnumerator(repo, factory, tf.TerraformProviderConfig{
				Name:         "test",
				DefaultAlias: "eu-west-3",
			}))
			remoteLibrary.AddDetailsFetcher(resourceaws.AwsS3BucketInventoryResourceType, aws.NewS3BucketInventoryDetailsFetcher(provider, deserializer))

			s := NewScanner(nil, remoteLibrary, alerter, scanOptions)
			got, err := s.Resources()
			assert.Equal(tt, err, c.wantErr)
			if err != nil {
				return
			}
			test.TestAgainstGoldenFile(got, resourceaws.AwsS3BucketInventoryResourceType, c.dirName, provider, deserializer, shouldUpdate, tt)
		})
	}
}

func TestS3BucketNotification(t *testing.T) {

	tests := []struct {
		test    string
		dirName string
		mocks   func(repository *repository.MockS3Repository)
		wantErr error
	}{
		{
			test:    "single bucket without notifications",
			dirName: "s3_bucket_notifications_no_notif",
			mocks: func(repository *repository.MockS3Repository) {
				repository.On(
					"ListAllBuckets",
				).Return([]*s3.Bucket{
					{Name: awssdk.String("dritftctl-test-no-notifications")},
				}, nil)

				repository.On(
					"GetBucketLocation",
					"dritftctl-test-no-notifications",
				).Return(
					"eu-west-3",
					nil,
				)

				repository.On(
					"GetBucketNotification",
					"dritftctl-test-no-notifications",
					"eu-west-3",
				).Return(
					nil,
					nil,
				)
			},
		},
		{
			test: "multiple bucket with notifications", dirName: "s3_bucket_notifications_multiple",
			mocks: func(repository *repository.MockS3Repository) {
				repository.On(
					"ListAllBuckets",
				).Return([]*s3.Bucket{
					{Name: awssdk.String("bucket-martin-test-drift")},
					{Name: awssdk.String("bucket-martin-test-drift2")},
					{Name: awssdk.String("bucket-martin-test-drift3")},
				}, nil)

				repository.On(
					"GetBucketLocation",
					"bucket-martin-test-drift",
				).Return(
					"eu-west-1",
					nil,
				)

				repository.On(
					"GetBucketLocation",
					"bucket-martin-test-drift2",
				).Return(
					"eu-west-3",
					nil,
				)

				repository.On(
					"GetBucketNotification",
					"bucket-martin-test-drift2",
					"eu-west-3",
				).Return(
					&s3.NotificationConfiguration{
						LambdaFunctionConfigurations: []*s3.LambdaFunctionConfiguration{
							{
								Id: awssdk.String("tf-s3-lambda-20201103165354926600000001"),
							},
							{
								Id: awssdk.String("tf-s3-lambda-20201103165354926600000002"),
							},
						},
					},
					nil,
				)

				repository.On(
					"GetBucketLocation",
					"bucket-martin-test-drift3",
				).Return(
					"ap-northeast-1",
					nil,
				)
			},
		},
		{
			test: "Cannot get bucket notification", dirName: "s3_bucket_notifications_list_bucket",
			mocks: func(repository *repository.MockS3Repository) {
				repository.On(
					"ListAllBuckets",
				).Return([]*s3.Bucket{
					{Name: awssdk.String("dritftctl-test-notifications-error")},
				}, nil)
				repository.On(
					"GetBucketLocation",
					"dritftctl-test-notifications-error",
				).Return(
					"eu-west-3",
					nil,
				)
				repository.On("GetBucketNotification", "dritftctl-test-notifications-error", "eu-west-3").Return(nil, awserr.NewRequestFailure(nil, 403, ""))
			},
			wantErr: nil,
		},
		{
			test: "Cannot list bucket", dirName: "s3_bucket_notifications_list_bucket",
			mocks: func(repository *repository.MockS3Repository) {
				repository.On("ListAllBuckets").Return(nil, awserr.NewRequestFailure(nil, 403, ""))
			},
			wantErr: nil,
		},
	}

	schemaRepository := testresource.InitFakeSchemaRepository("aws", "3.19.0")
	resourceaws.InitResourcesMetadata(schemaRepository)
	factory := terraform.NewTerraformResourceFactory(schemaRepository)
	deserializer := resource.NewDeserializer(factory)

	for _, c := range tests {
		t.Run(c.test, func(tt *testing.T) {
			shouldUpdate := c.dirName == *goldenfile.Update

			session := session.Must(session.NewSessionWithOptions(session.Options{
				SharedConfigState: session.SharedConfigEnable,
			}))

			scanOptions := ScannerOptions{Deep: true}
			providerLibrary := terraform.NewProviderLibrary()
			remoteLibrary := common.NewRemoteLibrary()

			// Initialize mocks
			alerter := &mocks.AlerterInterface{}
			alerter.On("SendAlert", mock.Anything, mock.Anything).Maybe().Return()
			fakeRepo := &repository.MockS3Repository{}
			c.mocks(fakeRepo)
			var repo repository.S3Repository = fakeRepo
			providerVersion := "3.19.0"
			realProvider, err := terraform2.InitTestAwsProvider(providerLibrary, providerVersion)
			if err != nil {
				t.Fatal(err)
			}
			provider := terraform2.NewFakeTerraformProvider(realProvider)
			provider.WithResponse(c.dirName)

			// Replace mock by real resources if we are in update mode
			if shouldUpdate {
				err := realProvider.Init()
				if err != nil {
					t.Fatal(err)
				}
				provider.ShouldUpdate()
				repo = repository.NewS3Repository(client.NewAWSClientFactory(session), cache.New(0))
			}

			remoteLibrary.AddEnumerator(aws.NewS3BucketNotificationEnumerator(repo, factory, tf.TerraformProviderConfig{
				Name:         "test",
				DefaultAlias: "eu-west-3",
			}))
			remoteLibrary.AddDetailsFetcher(resourceaws.AwsS3BucketNotificationResourceType, aws.NewS3BucketNotificationDetailsFetcher(provider, deserializer))

			s := NewScanner(nil, remoteLibrary, alerter, scanOptions)
			got, err := s.Resources()
			assert.Equal(tt, err, c.wantErr)
			if err != nil {
				return
			}
			test.TestAgainstGoldenFile(got, resourceaws.AwsS3BucketNotificationResourceType, c.dirName, provider, deserializer, shouldUpdate, tt)
		})
	}
}

func TestS3BucketMetrics(t *testing.T) {

	tests := []struct {
		test    string
		dirName string
		mocks   func(repository *repository.MockS3Repository)
		wantErr error
	}{
		{
			test: "multiple bucket with multiple metrics", dirName: "s3_bucket_metrics_multiple",
			mocks: func(repository *repository.MockS3Repository) {
				repository.On(
					"ListAllBuckets",
				).Return([]*s3.Bucket{
					{Name: awssdk.String("bucket-martin-test-drift")},
					{Name: awssdk.String("bucket-martin-test-drift2")},
					{Name: awssdk.String("bucket-martin-test-drift3")},
				}, nil)

				repository.On(
					"GetBucketLocation",
					"bucket-martin-test-drift",
				).Return(
					"eu-west-1",
					nil,
				)

				repository.On(
					"GetBucketLocation",
					"bucket-martin-test-drift2",
				).Return(
					"eu-west-3",
					nil,
				)

				repository.On(
					"GetBucketLocation",
					"bucket-martin-test-drift3",
				).Return(
					"ap-northeast-1",
					nil,
				)

				repository.On(
					"ListBucketMetricsConfigurations",
					&s3.Bucket{Name: awssdk.String("bucket-martin-test-drift2")},
					"eu-west-3",
				).Return(
					[]*s3.MetricsConfiguration{
						{Id: awssdk.String("Metrics_Bucket2")},
						{Id: awssdk.String("Metrics2_Bucket2")},
					},
					nil,
				)
			},
		},
		{
			test: "cannot list bucket", dirName: "s3_bucket_metrics_list_bucket",
			mocks: func(repository *repository.MockS3Repository) {
				repository.On("ListAllBuckets").Return(nil, awserr.NewRequestFailure(nil, 403, ""))
			},
			wantErr: nil,
		},
		{
			test: "cannot list metrics", dirName: "s3_bucket_metrics_list_metrics",
			mocks: func(repository *repository.MockS3Repository) {
				repository.On("ListAllBuckets").Return(
					[]*s3.Bucket{
						{Name: awssdk.String("bucket-martin-test-drift")},
					},
					nil,
				)
				repository.On(
					"GetBucketLocation",
					"bucket-martin-test-drift",
				).Return(
					"eu-west-3",
					nil,
				)

				repository.On(
					"ListBucketMetricsConfigurations",
					&s3.Bucket{Name: awssdk.String("bucket-martin-test-drift")},
					"eu-west-3",
				).Return(
					nil,
					awserr.NewRequestFailure(nil, 403, ""),
				)

			},
			wantErr: nil,
		},
	}

	schemaRepository := testresource.InitFakeSchemaRepository("aws", "3.19.0")
	resourceaws.InitResourcesMetadata(schemaRepository)
	factory := terraform.NewTerraformResourceFactory(schemaRepository)
	deserializer := resource.NewDeserializer(factory)

	for _, c := range tests {
		t.Run(c.test, func(tt *testing.T) {
			shouldUpdate := c.dirName == *goldenfile.Update

			session := session.Must(session.NewSessionWithOptions(session.Options{
				SharedConfigState: session.SharedConfigEnable,
			}))

			scanOptions := ScannerOptions{Deep: true}
			providerLibrary := terraform.NewProviderLibrary()
			remoteLibrary := common.NewRemoteLibrary()

			// Initialize mocks
			alerter := &mocks.AlerterInterface{}
			alerter.On("SendAlert", mock.Anything, mock.Anything).Maybe().Return()
			fakeRepo := &repository.MockS3Repository{}
			c.mocks(fakeRepo)
			var repo repository.S3Repository = fakeRepo
			providerVersion := "3.19.0"
			realProvider, err := terraform2.InitTestAwsProvider(providerLibrary, providerVersion)
			if err != nil {
				t.Fatal(err)
			}
			provider := terraform2.NewFakeTerraformProvider(realProvider)
			provider.WithResponse(c.dirName)

			// Replace mock by real resources if we are in update mode
			if shouldUpdate {
				err := realProvider.Init()
				if err != nil {
					t.Fatal(err)
				}
				provider.ShouldUpdate()
				repo = repository.NewS3Repository(client.NewAWSClientFactory(session), cache.New(0))
			}

			remoteLibrary.AddEnumerator(aws.NewS3BucketMetricsEnumerator(repo, factory, tf.TerraformProviderConfig{
				Name:         "test",
				DefaultAlias: "eu-west-3",
			}))
			remoteLibrary.AddDetailsFetcher(resourceaws.AwsS3BucketMetricResourceType, aws.NewS3BucketMetricsDetailsFetcher(provider, deserializer))

			s := NewScanner(nil, remoteLibrary, alerter, scanOptions)
			got, err := s.Resources()
			assert.Equal(tt, err, c.wantErr)
			if err != nil {
				return
			}
			test.TestAgainstGoldenFile(got, resourceaws.AwsS3BucketMetricResourceType, c.dirName, provider, deserializer, shouldUpdate, tt)
		})
	}
}

func TestS3BucketPolicy(t *testing.T) {

	tests := []struct {
		test    string
		dirName string
		mocks   func(repository *repository.MockS3Repository)
		wantErr error
	}{
		{
			test:    "single bucket without policy",
			dirName: "s3_bucket_policy_no_policy",
			mocks: func(repository *repository.MockS3Repository) {
				repository.On(
					"ListAllBuckets",
				).Return([]*s3.Bucket{
					{Name: awssdk.String("dritftctl-test-no-policy")},
				}, nil)

				repository.On(
					"GetBucketLocation",
					"dritftctl-test-no-policy",
				).Return(
					"eu-west-3",
					nil,
				)

				repository.On(
					"GetBucketPolicy",
					"dritftctl-test-no-policy",
					"eu-west-3",
				).Return(
					nil,
					nil,
				)
			},
		},
		{
			test: "multiple bucket with policies", dirName: "s3_bucket_policies_multiple",
			mocks: func(repository *repository.MockS3Repository) {
				repository.On(
					"ListAllBuckets",
				).Return([]*s3.Bucket{
					{Name: awssdk.String("bucket-martin-test-drift")},
					{Name: awssdk.String("bucket-martin-test-drift2")},
					{Name: awssdk.String("bucket-martin-test-drift3")},
				}, nil)

				repository.On(
					"GetBucketLocation",
					"bucket-martin-test-drift",
				).Return(
					"eu-west-1",
					nil,
				)

				repository.On(
					"GetBucketLocation",
					"bucket-martin-test-drift2",
				).Return(
					"eu-west-3",
					nil,
				)

				repository.On(
					"GetBucketLocation",
					"bucket-martin-test-drift3",
				).Return(
					"ap-northeast-1",
					nil,
				)

				repository.On(
					"GetBucketPolicy",
					"bucket-martin-test-drift2",
					"eu-west-3",
				).Return(
					// The value here not matter, we only want something not empty
					// to trigger the detail fetcher
					awssdk.String("foobar"),
					nil,
				)

			},
		},
		{
			test: "cannot list bucket", dirName: "s3_bucket_policies_list_bucket",
			mocks: func(repository *repository.MockS3Repository) {
				repository.On("ListAllBuckets").Return(nil, awserr.NewRequestFailure(nil, 403, ""))
			},
			wantErr: nil,
		},
	}

	schemaRepository := testresource.InitFakeSchemaRepository("aws", "3.19.0")
	resourceaws.InitResourcesMetadata(schemaRepository)
	factory := terraform.NewTerraformResourceFactory(schemaRepository)
	deserializer := resource.NewDeserializer(factory)

	for _, c := range tests {
		t.Run(c.test, func(tt *testing.T) {
			shouldUpdate := c.dirName == *goldenfile.Update

			session := session.Must(session.NewSessionWithOptions(session.Options{
				SharedConfigState: session.SharedConfigEnable,
			}))

			scanOptions := ScannerOptions{Deep: true}
			providerLibrary := terraform.NewProviderLibrary()
			remoteLibrary := common.NewRemoteLibrary()

			// Initialize mocks
			alerter := &mocks.AlerterInterface{}
			alerter.On("SendAlert", mock.Anything, mock.Anything).Maybe().Return()
			fakeRepo := &repository.MockS3Repository{}
			c.mocks(fakeRepo)
			var repo repository.S3Repository = fakeRepo
			providerVersion := "3.19.0"
			realProvider, err := terraform2.InitTestAwsProvider(providerLibrary, providerVersion)
			if err != nil {
				t.Fatal(err)
			}
			provider := terraform2.NewFakeTerraformProvider(realProvider)
			provider.WithResponse(c.dirName)

			// Replace mock by real resources if we are in update mode
			if shouldUpdate {
				err := realProvider.Init()
				if err != nil {
					t.Fatal(err)
				}
				provider.ShouldUpdate()
				repo = repository.NewS3Repository(client.NewAWSClientFactory(session), cache.New(0))
			}

			remoteLibrary.AddEnumerator(aws.NewS3BucketPolicyEnumerator(repo, factory, tf.TerraformProviderConfig{
				Name:         "test",
				DefaultAlias: "eu-west-3",
			}))
			remoteLibrary.AddDetailsFetcher(resourceaws.AwsS3BucketPolicyResourceType, aws.NewS3BucketPolicyDetailsFetcher(provider, deserializer))

			s := NewScanner(nil, remoteLibrary, alerter, scanOptions)
			got, err := s.Resources()
			assert.Equal(tt, err, c.wantErr)
			if err != nil {
				return
			}
			test.TestAgainstGoldenFile(got, resourceaws.AwsS3BucketPolicyResourceType, c.dirName, provider, deserializer, shouldUpdate, tt)
		})
	}
}