package aws

import (
	"context"
	"testing"

	"github.com/cloudskiff/driftctl/pkg/remote/aws/repository"
	"github.com/cloudskiff/driftctl/pkg/remote/cache"
	remoteerror "github.com/cloudskiff/driftctl/pkg/remote/error"
	testresource "github.com/cloudskiff/driftctl/test/resource"

	resourceaws "github.com/cloudskiff/driftctl/pkg/resource/aws"

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

	awssdk "github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/service/ec2"
	"github.com/cloudskiff/driftctl/pkg/parallel"
	"github.com/cloudskiff/driftctl/pkg/resource"

	"github.com/cloudskiff/driftctl/pkg/terraform"
	"github.com/cloudskiff/driftctl/test"
	"github.com/cloudskiff/driftctl/test/goldenfile"
	mocks2 "github.com/cloudskiff/driftctl/test/mocks"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/mock"
)

func TestRouteSupplier_Resources(t *testing.T) {
	cases := []struct {
		test    string
		dirName string
		mocks   func(client *repository.MockEC2Repository)
		err     error
	}{
		{
			// route table with no route case is not possible
			// as a default route will always be present in each route table
			test:    "no route",
			dirName: "route_empty",
			mocks: func(client *repository.MockEC2Repository) {
				client.On("ListAllRouteTables").Once().Return([]*ec2.RouteTable{}, nil)
			},
			err: nil,
		},
		{
			test:    "mixed default_route_table and route_table",
			dirName: "route",
			mocks: func(client *repository.MockEC2Repository) {
				client.On("ListAllRouteTables").Once().Return([]*ec2.RouteTable{
					{
						RouteTableId: awssdk.String("rtb-096bdfb69309c54c3"), // table1
						Routes: []*ec2.Route{
							{
								DestinationCidrBlock: awssdk.String("10.0.0.0/16"),
								Origin:               awssdk.String("CreateRouteTable"), // default route
							},
							{
								DestinationCidrBlock: awssdk.String("1.1.1.1/32"),
								GatewayId:            awssdk.String("igw-030e74f73bd67f21b"),
							},
							{
								DestinationIpv6CidrBlock: awssdk.String("::/0"),
								GatewayId:                awssdk.String("igw-030e74f73bd67f21b"),
							},
						},
					},
					{
						RouteTableId: awssdk.String("rtb-0169b0937fd963ddc"), // table2
						Routes: []*ec2.Route{
							{
								DestinationCidrBlock: awssdk.String("10.0.0.0/16"),
								Origin:               awssdk.String("CreateRouteTable"), // default route
							},
							{
								DestinationCidrBlock: awssdk.String("0.0.0.0/0"),
								GatewayId:            awssdk.String("igw-030e74f73bd67f21b"),
							},
							{
								DestinationIpv6CidrBlock: awssdk.String("::/0"),
								GatewayId:                awssdk.String("igw-030e74f73bd67f21b"),
							},
						},
					},
					{
						RouteTableId: awssdk.String("rtb-02780c485f0be93c5"), // default_table
						VpcId:        awssdk.String("vpc-09fe5abc2309ba49d"),
						Associations: []*ec2.RouteTableAssociation{
							{
								Main: awssdk.Bool(true),
							},
						},
						Routes: []*ec2.Route{
							{
								DestinationCidrBlock: awssdk.String("10.0.0.0/16"),
								Origin:               awssdk.String("CreateRouteTable"), // default route
							},
							{
								DestinationCidrBlock: awssdk.String("10.1.1.0/24"),
								GatewayId:            awssdk.String("igw-030e74f73bd67f21b"),
							},
							{
								DestinationCidrBlock: awssdk.String("10.1.2.0/24"),
								GatewayId:            awssdk.String("igw-030e74f73bd67f21b"),
							},
						},
					},
					{
						RouteTableId: awssdk.String(""), // table3
						Routes: []*ec2.Route{
							{
								DestinationCidrBlock: awssdk.String("10.0.0.0/16"),
								Origin:               awssdk.String("CreateRouteTable"), // default route
							},
						},
					},
				}, nil)
			},
			err: nil,
		},
		{
			test:    "cannot list route table",
			dirName: "route_empty",
			mocks: func(client *repository.MockEC2Repository) {
				client.On("ListAllRouteTables").Once().Return(nil, awserr.NewRequestFailure(nil, 403, ""))
			},
			err: remoteerror.NewResourceEnumerationErrorWithType(awserr.NewRequestFailure(nil, 403, ""), resourceaws.AwsRouteResourceType, resourceaws.AwsRouteTableResourceType),
		},
	}
	for _, c := range cases {
		shouldUpdate := c.dirName == *goldenfile.Update

		providerLibrary := terraform.NewProviderLibrary()
		supplierLibrary := resource.NewSupplierLibrary()

		repo := testresource.InitFakeSchemaRepository("aws", "3.19.0")
		resourceaws.InitResourcesMetadata(repo)
		factory := terraform.NewTerraformResourceFactory(repo)

		deserializer := resource.NewDeserializer(factory)
		if shouldUpdate {
			provider, err := InitTestAwsProvider(providerLibrary)
			if err != nil {
				t.Fatal(err)
			}
			supplierLibrary.AddSupplier(NewRouteSupplier(provider, deserializer, repository.NewEC2Repository(provider.session, cache.New(0))))
		}

		t.Run(c.test, func(tt *testing.T) {
			fakeEC2 := repository.MockEC2Repository{}
			c.mocks(&fakeEC2)
			provider := mocks2.NewMockedGoldenTFProvider(c.dirName, providerLibrary.Provider(terraform.AWS), shouldUpdate)
			s := &RouteSupplier{
				provider,
				deserializer,
				&fakeEC2,
				terraform.NewParallelResourceReader(parallel.NewParallelRunner(context.TODO(), 10)),
			}
			got, err := s.Resources()
			assert.Equal(tt, c.err, err)

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