package appstream_test

import (
	"fmt"
	"testing"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/service/appstream"
	"github.com/hashicorp/aws-sdk-go-base/v2/awsv1shim/v2/tfawserr"
	sdkacctest "github.com/hashicorp/terraform-plugin-sdk/v2/helper/acctest"
	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
	"github.com/hashicorp/terraform-plugin-sdk/v2/terraform"
	"github.com/hashicorp/terraform-provider-aws/internal/acctest"
	"github.com/hashicorp/terraform-provider-aws/internal/conns"
	tfappstream "github.com/hashicorp/terraform-provider-aws/internal/service/appstream"
)

func init() {
	acctest.RegisterServiceErrorCheckFunc(appstream.EndpointsID, testAccErrorCheckSkip)
}

// testAccErrorCheckSkip skips AppStream tests that have error messages indicating unsupported features
func testAccErrorCheckSkip(t *testing.T) resource.ErrorCheckFunc {
	return acctest.ErrorCheckSkipMessagesContaining(t,
		"ResourceNotFoundException: The image",
		"InvalidParameterValueException: The AppStream 2.0 user pool feature",
	)
}

func TestAccAppStreamFleet_basic(t *testing.T) {
	var fleetOutput appstream.Fleet
	resourceName := "aws_appstream_fleet.test"
	instanceType := "stream.standard.small"
	rName := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix)

	resource.ParallelTest(t, resource.TestCase{
		PreCheck: func() {
			acctest.PreCheck(t)
			acctest.PreCheckHasIAMRole(t, "AmazonAppStreamServiceAccess")
		},
		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
		CheckDestroy:             testAccCheckFleetDestroy,
		ErrorCheck:               acctest.ErrorCheck(t, appstream.EndpointsID),
		Steps: []resource.TestStep{
			{
				Config: testAccFleetConfig_basic(rName, instanceType),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckFleetExists(resourceName, &fleetOutput),
					resource.TestCheckResourceAttr(resourceName, "name", rName),
					resource.TestCheckResourceAttr(resourceName, "instance_type", instanceType),
					resource.TestCheckResourceAttr(resourceName, "state", appstream.FleetStateRunning),
					resource.TestCheckResourceAttr(resourceName, "stream_view", appstream.StreamViewApp),
					acctest.CheckResourceAttrRFC3339(resourceName, "created_time"),
				),
			},
			{
				ResourceName:      resourceName,
				ImportState:       true,
				ImportStateVerify: true,
			},
		},
	})
}

func TestAccAppStreamFleet_disappears(t *testing.T) {
	var fleetOutput appstream.Fleet
	resourceName := "aws_appstream_fleet.test"
	instanceType := "stream.standard.small"
	rName := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix)

	resource.ParallelTest(t, resource.TestCase{
		PreCheck: func() {
			acctest.PreCheck(t)
			acctest.PreCheckHasIAMRole(t, "AmazonAppStreamServiceAccess")
		},
		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
		CheckDestroy:             testAccCheckFleetDestroy,
		ErrorCheck:               acctest.ErrorCheck(t, appstream.EndpointsID),
		Steps: []resource.TestStep{
			{
				Config: testAccFleetConfig_basic(rName, instanceType),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckFleetExists(resourceName, &fleetOutput),
					acctest.CheckResourceDisappears(acctest.Provider, tfappstream.ResourceFleet(), resourceName),
				),
				ExpectNonEmptyPlan: true,
			},
		},
	})
}

func TestAccAppStreamFleet_completeWithStop(t *testing.T) {
	var fleetOutput appstream.Fleet
	resourceName := "aws_appstream_fleet.test"
	rName := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix)
	description := "Description of a test"
	descriptionUpdated := "Updated Description of a test"
	fleetType := "ON_DEMAND"
	instanceType := "stream.standard.small"
	instanceTypeUpdate := "stream.standard.medium"

	resource.ParallelTest(t, resource.TestCase{
		PreCheck: func() {
			acctest.PreCheck(t)
			acctest.PreCheckHasIAMRole(t, "AmazonAppStreamServiceAccess")
		},
		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
		CheckDestroy:             testAccCheckFleetDestroy,
		ErrorCheck:               acctest.ErrorCheck(t, appstream.EndpointsID),
		Steps: []resource.TestStep{
			{
				Config: testAccFleetConfig_complete(rName, description, fleetType, instanceType),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckFleetExists(resourceName, &fleetOutput),
					resource.TestCheckResourceAttr(resourceName, "name", rName),
					resource.TestCheckResourceAttr(resourceName, "state", appstream.FleetStateRunning),
					resource.TestCheckResourceAttr(resourceName, "instance_type", instanceType),
					resource.TestCheckResourceAttr(resourceName, "description", description),
					acctest.CheckResourceAttrRFC3339(resourceName, "created_time"),
					resource.TestCheckResourceAttr(resourceName, "stream_view", appstream.StreamViewDesktop),
				),
			},
			{
				Config: testAccFleetConfig_complete(rName, descriptionUpdated, fleetType, instanceTypeUpdate),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckFleetExists(resourceName, &fleetOutput),
					resource.TestCheckResourceAttr(resourceName, "name", rName),
					resource.TestCheckResourceAttr(resourceName, "state", appstream.FleetStateRunning),
					resource.TestCheckResourceAttr(resourceName, "instance_type", instanceTypeUpdate),
					resource.TestCheckResourceAttr(resourceName, "description", descriptionUpdated),
					acctest.CheckResourceAttrRFC3339(resourceName, "created_time"),
					resource.TestCheckResourceAttr(resourceName, "stream_view", appstream.StreamViewDesktop),
				),
			},
			{
				ResourceName:      resourceName,
				ImportState:       true,
				ImportStateVerify: true,
			},
		},
	})
}

func TestAccAppStreamFleet_completeWithoutStop(t *testing.T) {
	var fleetOutput appstream.Fleet
	resourceName := "aws_appstream_fleet.test"
	rName := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix)
	description := "Description of a test"
	fleetType := "ON_DEMAND"
	instanceType := "stream.standard.small"
	displayName := "display name of a test"
	displayNameUpdated := "display name of a test updated"

	resource.ParallelTest(t, resource.TestCase{
		PreCheck: func() {
			acctest.PreCheck(t)
			acctest.PreCheckHasIAMRole(t, "AmazonAppStreamServiceAccess")
		},
		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
		CheckDestroy:             testAccCheckFleetDestroy,
		ErrorCheck:               acctest.ErrorCheck(t, appstream.EndpointsID),
		Steps: []resource.TestStep{
			{
				Config: testAccFleetConfig_completeNoStopping(rName, description, fleetType, instanceType, displayName),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckFleetExists(resourceName, &fleetOutput),
					resource.TestCheckResourceAttr(resourceName, "name", rName),
					resource.TestCheckResourceAttr(resourceName, "state", appstream.FleetStateRunning),
					resource.TestCheckResourceAttr(resourceName, "instance_type", instanceType),
					resource.TestCheckResourceAttr(resourceName, "description", description),
					acctest.CheckResourceAttrRFC3339(resourceName, "created_time"),
					resource.TestCheckResourceAttr(resourceName, "display_name", displayName),
				),
			},
			{
				Config: testAccFleetConfig_completeNoStopping(rName, description, fleetType, instanceType, displayNameUpdated),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckFleetExists(resourceName, &fleetOutput),
					resource.TestCheckResourceAttr(resourceName, "name", rName),
					resource.TestCheckResourceAttr(resourceName, "state", appstream.FleetStateRunning),
					resource.TestCheckResourceAttr(resourceName, "instance_type", instanceType),
					resource.TestCheckResourceAttr(resourceName, "description", description),
					acctest.CheckResourceAttrRFC3339(resourceName, "created_time"),
					resource.TestCheckResourceAttr(resourceName, "description", description),
					resource.TestCheckResourceAttr(resourceName, "display_name", displayNameUpdated),
				),
			},
			{
				ResourceName:      resourceName,
				ImportState:       true,
				ImportStateVerify: true,
			},
		},
	})
}

func TestAccAppStreamFleet_withTags(t *testing.T) {
	var fleetOutput appstream.Fleet
	resourceName := "aws_appstream_fleet.test"
	rName := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix)
	description := "Description of a test"
	fleetType := "ON_DEMAND"
	instanceType := "stream.standard.small"
	displayName := "display name of a test"
	displayNameUpdated := "display name of a test updated"

	resource.ParallelTest(t, resource.TestCase{
		PreCheck: func() {
			acctest.PreCheck(t)
			acctest.PreCheckHasIAMRole(t, "AmazonAppStreamServiceAccess")
		},
		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
		CheckDestroy:             testAccCheckFleetDestroy,
		ErrorCheck:               acctest.ErrorCheck(t, appstream.EndpointsID),
		Steps: []resource.TestStep{
			{
				Config: testAccFleetConfig_tags(rName, description, fleetType, instanceType, displayName),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckFleetExists(resourceName, &fleetOutput),
					resource.TestCheckResourceAttr(resourceName, "name", rName),
					resource.TestCheckResourceAttr(resourceName, "state", appstream.FleetStateRunning),
					resource.TestCheckResourceAttr(resourceName, "instance_type", instanceType),
					resource.TestCheckResourceAttr(resourceName, "description", description),
					resource.TestCheckResourceAttr(resourceName, "tags.%", "1"),
					resource.TestCheckResourceAttr(resourceName, "tags.Key", "value"),
					resource.TestCheckResourceAttr(resourceName, "tags_all.%", "1"),
					resource.TestCheckResourceAttr(resourceName, "tags_all.Key", "value"),
					acctest.CheckResourceAttrRFC3339(resourceName, "created_time"),
				),
			},
			{
				Config: testAccFleetConfig_tags(rName, description, fleetType, instanceType, displayNameUpdated),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckFleetExists(resourceName, &fleetOutput),
					resource.TestCheckResourceAttr(resourceName, "name", rName),
					resource.TestCheckResourceAttr(resourceName, "state", appstream.FleetStateRunning),
					resource.TestCheckResourceAttr(resourceName, "instance_type", instanceType),
					resource.TestCheckResourceAttr(resourceName, "description", description),
					resource.TestCheckResourceAttr(resourceName, "tags.%", "1"),
					resource.TestCheckResourceAttr(resourceName, "tags.Key", "value"),
					resource.TestCheckResourceAttr(resourceName, "tags_all.%", "1"),
					resource.TestCheckResourceAttr(resourceName, "tags_all.Key", "value"),
					acctest.CheckResourceAttrRFC3339(resourceName, "created_time"),
				),
			},
			{
				ResourceName:      resourceName,
				ImportState:       true,
				ImportStateVerify: true,
			},
		},
	})
}

func TestAccAppStreamFleet_emptyDomainJoin(t *testing.T) {
	var fleetOutput appstream.Fleet
	resourceName := "aws_appstream_fleet.test"
	instanceType := "stream.standard.small"
	rName := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix)

	resource.ParallelTest(t, resource.TestCase{
		PreCheck: func() {
			acctest.PreCheck(t)
			acctest.PreCheckHasIAMRole(t, "AmazonAppStreamServiceAccess")
		},
		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
		CheckDestroy:             testAccCheckFleetDestroy,
		ErrorCheck:               acctest.ErrorCheck(t, appstream.EndpointsID),
		Steps: []resource.TestStep{
			{
				Config: testAccFleetConfig_emptyDomainJoin(rName, instanceType, `""`),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckFleetExists(resourceName, &fleetOutput),
					resource.TestCheckResourceAttr(resourceName, "name", rName),
					resource.TestCheckResourceAttr(resourceName, "instance_type", instanceType),
					resource.TestCheckResourceAttr(resourceName, "state", appstream.FleetStateRunning),
					resource.TestCheckResourceAttr(resourceName, "stream_view", appstream.StreamViewApp),
					acctest.CheckResourceAttrRFC3339(resourceName, "created_time"),
				),
			},
			{
				Config: testAccFleetConfig_emptyDomainJoin(rName, instanceType, "null"),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckFleetExists(resourceName, &fleetOutput),
					resource.TestCheckResourceAttr(resourceName, "name", rName),
					resource.TestCheckResourceAttr(resourceName, "instance_type", instanceType),
					resource.TestCheckResourceAttr(resourceName, "state", appstream.FleetStateRunning),
					resource.TestCheckResourceAttr(resourceName, "stream_view", appstream.StreamViewApp),
					acctest.CheckResourceAttrRFC3339(resourceName, "created_time"),
				),
			},
			{
				ResourceName:      resourceName,
				ImportState:       true,
				ImportStateVerify: true,
			},
		},
	})
}

func testAccCheckFleetExists(resourceName string, appStreamFleet *appstream.Fleet) resource.TestCheckFunc {
	return func(s *terraform.State) error {
		rs, ok := s.RootModule().Resources[resourceName]
		if !ok {
			return fmt.Errorf("not found: %s", resourceName)
		}

		conn := acctest.Provider.Meta().(*conns.AWSClient).AppStreamConn()
		resp, err := conn.DescribeFleets(&appstream.DescribeFleetsInput{Names: []*string{aws.String(rs.Primary.ID)}})

		if err != nil {
			return err
		}

		if resp == nil || len(resp.Fleets) == 0 {
			return fmt.Errorf("appstream fleet %q does not exist", rs.Primary.ID)
		}

		*appStreamFleet = *resp.Fleets[0]

		return nil
	}
}

func testAccCheckFleetDestroy(s *terraform.State) error {
	conn := acctest.Provider.Meta().(*conns.AWSClient).AppStreamConn()

	for _, rs := range s.RootModule().Resources {
		if rs.Type != "aws_appstream_fleet" {
			continue
		}

		resp, err := conn.DescribeFleets(&appstream.DescribeFleetsInput{Names: []*string{aws.String(rs.Primary.ID)}})

		if tfawserr.ErrCodeEquals(err, appstream.ErrCodeResourceNotFoundException) {
			continue
		}

		if err != nil {
			return err
		}

		if resp != nil && len(resp.Fleets) > 0 {
			return fmt.Errorf("appstream fleet %q still exists", rs.Primary.ID)
		}
	}

	return nil
}

func testAccFleetConfig_basic(name, instanceType string) string {
	// "Amazon-AppStream2-Sample-Image-02-04-2019" is not available in GovCloud
	return fmt.Sprintf(`
resource "aws_appstream_fleet" "test" {
  name          = %[1]q
  image_name    = "Amazon-AppStream2-Sample-Image-02-04-2019"
  instance_type = %[2]q

  compute_capacity {
    desired_instances = 1
  }
}
`, name, instanceType)
}

func testAccFleetConfig_complete(name, description, fleetType, instanceType string) string {
	return acctest.ConfigCompose(
		acctest.ConfigAvailableAZsNoOptIn(),
		fmt.Sprintf(`
data "aws_region" "current" {}
data "aws_partition" "current" {}

resource "aws_vpc" "test" {
  cidr_block = "10.0.0.0/16"
}

resource "aws_subnet" "test" {
  count             = 2
  availability_zone = data.aws_availability_zones.available.names[count.index]
  cidr_block        = "10.0.${count.index}.0/24"
  vpc_id            = aws_vpc.test.id
}

resource "aws_appstream_fleet" "test" {
  name      = %[1]q
  image_arn = "arn:${data.aws_partition.current.partition}:appstream:${data.aws_region.current.name}::image/Amazon-AppStream2-Sample-Image-02-04-2019"

  compute_capacity {
    desired_instances = 1
  }

  description                        = %[2]q
  idle_disconnect_timeout_in_seconds = 70
  enable_default_internet_access     = false
  fleet_type                         = %[3]q
  instance_type                      = %[4]q
  max_user_duration_in_seconds       = 1000
  stream_view                        = "DESKTOP"

  vpc_config {
    subnet_ids = aws_subnet.test[*].id
  }
}
`, name, description, fleetType, instanceType))
}

func testAccFleetConfig_completeNoStopping(name, description, fleetType, instanceType, displayName string) string {
	return acctest.ConfigCompose(
		acctest.ConfigAvailableAZsNoOptIn(),
		fmt.Sprintf(`
resource "aws_vpc" "test" {
  cidr_block = "10.0.0.0/16"
}

resource "aws_subnet" "test" {
  count             = 2
  availability_zone = data.aws_availability_zones.available.names[count.index]
  cidr_block        = "10.0.${count.index}.0/24"
  vpc_id            = aws_vpc.test.id
}

resource "aws_appstream_fleet" "test" {
  name       = %[1]q
  image_name = "Amazon-AppStream2-Sample-Image-02-04-2019"

  compute_capacity {
    desired_instances = 1
  }

  description                        = %[2]q
  display_name                       = %[5]q
  idle_disconnect_timeout_in_seconds = 70
  enable_default_internet_access     = false
  fleet_type                         = %[3]q
  instance_type                      = %[4]q
  max_user_duration_in_seconds       = 1000

  vpc_config {
    subnet_ids = aws_subnet.test[*].id
  }
}
`, name, description, fleetType, instanceType, displayName))
}

func testAccFleetConfig_tags(name, description, fleetType, instanceType, displayName string) string {
	return acctest.ConfigCompose(
		acctest.ConfigAvailableAZsNoOptIn(),
		fmt.Sprintf(`
resource "aws_vpc" "test" {
  cidr_block = "10.0.0.0/16"
}

resource "aws_subnet" "test" {
  count             = 2
  availability_zone = data.aws_availability_zones.available.names[count.index]
  cidr_block        = "10.0.${count.index}.0/24"
  vpc_id            = aws_vpc.test.id
}

resource "aws_appstream_fleet" "test" {
  name       = %[1]q
  image_name = "Amazon-AppStream2-Sample-Image-02-04-2019"

  compute_capacity {
    desired_instances = 1
  }

  description                        = %[2]q
  display_name                       = %[5]q
  idle_disconnect_timeout_in_seconds = 70
  enable_default_internet_access     = false
  fleet_type                         = %[3]q
  instance_type                      = %[4]q
  max_user_duration_in_seconds       = 1000

  tags = {
    Key = "value"
  }

  vpc_config {
    subnet_ids = aws_subnet.test[*].id
  }
}
`, name, description, fleetType, instanceType, displayName))
}

func testAccFleetConfig_emptyDomainJoin(name, instanceType, empty string) string {
	// "Amazon-AppStream2-Sample-Image-02-04-2019" is not available in GovCloud
	return fmt.Sprintf(`
resource "aws_appstream_fleet" "test" {
  name          = %[1]q
  image_name    = "Amazon-AppStream2-Sample-Image-02-04-2019"
  instance_type = %[2]q

  compute_capacity {
    desired_instances = 1
  }

  domain_join_info {
    directory_name                         = %[3]s
    organizational_unit_distinguished_name = %[3]s
  }
}
`, name, instanceType, empty)
}
