package aws

import (
	"context"
	"testing"

	"github.com/cloudskiff/driftctl/pkg/parallel"
	awsdeserializer "github.com/cloudskiff/driftctl/pkg/resource/aws/deserializer"

	"github.com/aws/aws-sdk-go/aws"

	"github.com/aws/aws-sdk-go/service/iam"

	mocks2 "github.com/cloudskiff/driftctl/test/mocks"
	"github.com/stretchr/testify/mock"

	"github.com/cloudskiff/driftctl/mocks"
	"github.com/cloudskiff/driftctl/pkg/resource"
	"github.com/cloudskiff/driftctl/pkg/terraform"
	"github.com/cloudskiff/driftctl/test"
	"github.com/cloudskiff/driftctl/test/goldenfile"
)

func TestIamRoleSupplier_Resources(t *testing.T) {

	cases := []struct {
		test    string
		dirName string
		mocks   func(client *mocks.FakeIAM)
		err     error
	}{
		{
			test:    "no iam roles",
			dirName: "iam_role_empty",
			mocks: func(client *mocks.FakeIAM) {
				client.On("ListRolesPages", mock.Anything, mock.Anything).Return(nil)
			},
			err: nil,
		},
		{
			test:    "iam multiples roles",
			dirName: "iam_role_multiple",
			mocks: func(client *mocks.FakeIAM) {
				client.On("ListRolesPages",
					&iam.ListRolesInput{},
					mock.MatchedBy(func(callback func(res *iam.ListRolesOutput, lastPage bool) bool) bool {
						callback(&iam.ListRolesOutput{Roles: []*iam.Role{
							{
								RoleName: aws.String("test_role_0"),
							},
							{
								RoleName: aws.String("test_role_1"),
							},
						}}, false)
						callback(&iam.ListRolesOutput{Roles: []*iam.Role{
							{
								RoleName: aws.String("test_role_2"),
							},
						}}, true)
						return true
					})).Return(nil)
			},
			err: nil,
		},
		{
			test:    "iam roles ignore services roles",
			dirName: "iam_role_ignore_services_roles",
			mocks: func(client *mocks.FakeIAM) {
				client.On("ListRolesPages",
					&iam.ListRolesInput{},
					mock.MatchedBy(func(callback func(res *iam.ListRolesOutput, lastPage bool) bool) bool {
						callback(&iam.ListRolesOutput{Roles: []*iam.Role{
							{
								RoleName: aws.String("AWSServiceRoleForOrganizations"),
							},
							{
								RoleName: aws.String("AWSServiceRoleForSupport"),
							},
							{
								RoleName: aws.String("AWSServiceRoleForTrustedAdvisor"),
							},
						}}, true)
						return true
					})).Return(nil)
			},
			err: nil,
		},
	}
	for _, c := range cases {
		shouldUpdate := c.dirName == *goldenfile.Update
		if shouldUpdate {
			provider, err := NewTerraFormProvider()
			if err != nil {
				t.Fatal(err)
			}

			terraform.AddProvider(terraform.AWS, provider)
			resource.AddSupplier(NewIamRoleSupplier(provider.Runner(), iam.New(provider.session)))
		}

		t.Run(c.test, func(tt *testing.T) {
			fakeIam := mocks.FakeIAM{}
			c.mocks(&fakeIam)

			provider := mocks2.NewMockedGoldenTFProvider(c.dirName, terraform.Provider(terraform.AWS), shouldUpdate)
			deserializer := awsdeserializer.NewIamRoleDeserializer()
			s := &IamRoleSupplier{
				provider,
				deserializer,
				&fakeIam,
				terraform.NewParallelResourceReader(parallel.NewParallelRunner(context.TODO(), 10)),
			}
			got, err := s.Resources()
			if c.err != err {
				t.Errorf("Expected error %+v got %+v", c.err, err)
			}

			mock.AssertExpectationsForObjects(tt)
			test.CtyTestDiff(got, c.dirName, provider, deserializer, shouldUpdate, t)
		})
	}
}