package servicediscovery_test

import (
	"context"
	"fmt"
	"regexp"
	"testing"

	"github.com/aws/aws-sdk-go/service/servicediscovery"
	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"
	tfservicediscovery "github.com/hashicorp/terraform-provider-aws/internal/service/servicediscovery"
	"github.com/hashicorp/terraform-provider-aws/internal/tfresource"
)

func TestAccServiceDiscoveryService_private(t *testing.T) {
	resourceName := "aws_service_discovery_service.test"
	rName := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix)

	resource.ParallelTest(t, resource.TestCase{
		PreCheck: func() {
			acctest.PreCheck(t)
			acctest.PreCheckPartitionHasService(servicediscovery.EndpointsID, t)
			testAccPreCheck(t)
		},
		ErrorCheck:               acctest.ErrorCheck(t, servicediscovery.EndpointsID),
		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
		CheckDestroy:             testAccCheckServiceDestroy,
		Steps: []resource.TestStep{
			{
				Config: testAccServiceConfig_private(rName, 5),
				Check: resource.ComposeAggregateTestCheckFunc(
					testAccCheckServiceExists(resourceName),
					acctest.MatchResourceAttrRegionalARN(resourceName, "arn", "servicediscovery", regexp.MustCompile(`service/.+`)),
					resource.TestCheckResourceAttr(resourceName, "description", ""),
					resource.TestCheckResourceAttr(resourceName, "dns_config.#", "1"),
					resource.TestCheckResourceAttr(resourceName, "dns_config.0.dns_records.#", "1"),
					resource.TestCheckResourceAttr(resourceName, "dns_config.0.dns_records.0.type", "A"),
					resource.TestCheckResourceAttr(resourceName, "dns_config.0.dns_records.0.ttl", "5"),
					resource.TestCheckResourceAttr(resourceName, "dns_config.0.routing_policy", "MULTIVALUE"),
					resource.TestCheckResourceAttr(resourceName, "force_destroy", "false"),
					resource.TestCheckResourceAttr(resourceName, "health_check_config.#", "0"),
					resource.TestCheckResourceAttr(resourceName, "health_check_custom_config.#", "1"),
					resource.TestCheckResourceAttr(resourceName, "health_check_custom_config.0.failure_threshold", "5"),
					resource.TestCheckResourceAttr(resourceName, "tags.%", "0"),
				),
			},
			{
				ResourceName:            resourceName,
				ImportState:             true,
				ImportStateVerify:       true,
				ImportStateVerifyIgnore: []string{"force_destroy"},
			},
			{
				Config: testAccServiceConfig_privateUpdate(rName, 5),
				Check: resource.ComposeAggregateTestCheckFunc(
					testAccCheckServiceExists(resourceName),
					acctest.MatchResourceAttrRegionalARN(resourceName, "arn", "servicediscovery", regexp.MustCompile(`service/.+`)),
					resource.TestCheckResourceAttr(resourceName, "description", "test"),
					resource.TestCheckResourceAttr(resourceName, "dns_config.#", "1"),
					resource.TestCheckResourceAttr(resourceName, "dns_config.0.dns_records.#", "2"),
					resource.TestCheckResourceAttr(resourceName, "dns_config.0.dns_records.0.type", "A"),
					resource.TestCheckResourceAttr(resourceName, "dns_config.0.dns_records.0.ttl", "10"),
					resource.TestCheckResourceAttr(resourceName, "dns_config.0.dns_records.1.type", "AAAA"),
					resource.TestCheckResourceAttr(resourceName, "dns_config.0.dns_records.1.ttl", "5"),
					resource.TestCheckResourceAttr(resourceName, "force_destroy", "false"),
					resource.TestCheckResourceAttr(resourceName, "health_check_config.#", "0"),
					resource.TestCheckResourceAttr(resourceName, "health_check_custom_config.#", "1"),
					resource.TestCheckResourceAttr(resourceName, "health_check_custom_config.0.failure_threshold", "5"),
					resource.TestCheckResourceAttr(resourceName, "tags.%", "0"),
				),
			},
		},
	})
}

func TestAccServiceDiscoveryService_public(t *testing.T) {
	rName := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix)
	resourceName := "aws_service_discovery_service.test"

	resource.ParallelTest(t, resource.TestCase{
		PreCheck: func() {
			acctest.PreCheck(t)
			acctest.PreCheckPartitionHasService(servicediscovery.EndpointsID, t)
			testAccPreCheck(t)
		},
		ErrorCheck:               acctest.ErrorCheck(t, servicediscovery.EndpointsID),
		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
		CheckDestroy:             testAccCheckServiceDestroy,
		Steps: []resource.TestStep{
			{
				Config: testAccServiceConfig_public(rName, 5, "/path"),
				Check: resource.ComposeAggregateTestCheckFunc(
					testAccCheckServiceExists(resourceName),
					acctest.MatchResourceAttrRegionalARN(resourceName, "arn", "servicediscovery", regexp.MustCompile(`service/.+`)),
					resource.TestCheckResourceAttr(resourceName, "description", "test"),
					resource.TestCheckResourceAttr(resourceName, "dns_config.#", "1"),
					resource.TestCheckResourceAttr(resourceName, "dns_config.0.routing_policy", "WEIGHTED"),
					resource.TestCheckResourceAttr(resourceName, "health_check_config.#", "1"),
					resource.TestCheckResourceAttr(resourceName, "health_check_config.0.type", "HTTP"),
					resource.TestCheckResourceAttr(resourceName, "health_check_config.0.failure_threshold", "5"),
					resource.TestCheckResourceAttr(resourceName, "health_check_config.0.resource_path", "/path"),
					resource.TestCheckResourceAttr(resourceName, "health_check_custom_config.#", "0"),
					resource.TestCheckResourceAttr(resourceName, "tags.%", "0"),
				),
			},
			{
				ResourceName:            resourceName,
				ImportState:             true,
				ImportStateVerify:       true,
				ImportStateVerifyIgnore: []string{"force_destroy"},
			},
			{
				Config: testAccServiceConfig_public(rName, 3, "/updated-path"),
				Check: resource.ComposeAggregateTestCheckFunc(
					testAccCheckServiceExists(resourceName),
					acctest.MatchResourceAttrRegionalARN(resourceName, "arn", "servicediscovery", regexp.MustCompile(`service/.+`)),
					resource.TestCheckResourceAttr(resourceName, "description", "test"),
					resource.TestCheckResourceAttr(resourceName, "dns_config.#", "1"),
					resource.TestCheckResourceAttr(resourceName, "health_check_config.#", "1"),
					resource.TestCheckResourceAttr(resourceName, "health_check_config.0.type", "HTTP"),
					resource.TestCheckResourceAttr(resourceName, "health_check_config.0.failure_threshold", "3"),
					resource.TestCheckResourceAttr(resourceName, "health_check_config.0.resource_path", "/updated-path"),
					resource.TestCheckResourceAttr(resourceName, "health_check_custom_config.#", "0"),
					resource.TestCheckResourceAttr(resourceName, "tags.%", "0"),
				),
			},
			{
				Config: testAccServiceConfig_publicUpdateNoHealthCheck(rName),
				Check: resource.ComposeAggregateTestCheckFunc(
					testAccCheckServiceExists(resourceName),
					acctest.MatchResourceAttrRegionalARN(resourceName, "arn", "servicediscovery", regexp.MustCompile(`service/.+`)),
					resource.TestCheckResourceAttr(resourceName, "description", ""),
					resource.TestCheckResourceAttr(resourceName, "dns_config.#", "1"),
					resource.TestCheckResourceAttr(resourceName, "health_check_config.#", "0"),
					resource.TestCheckResourceAttr(resourceName, "health_check_custom_config.#", "0"),
					resource.TestCheckResourceAttr(resourceName, "tags.%", "0"),
				),
			},
		},
	})
}

func TestAccServiceDiscoveryService_http(t *testing.T) {
	rName := fmt.Sprintf("%s-%s", acctest.ResourcePrefix, sdkacctest.RandStringFromCharSet(8, sdkacctest.CharSetAlpha))
	resourceName := "aws_service_discovery_service.test"

	resource.ParallelTest(t, resource.TestCase{
		PreCheck:                 func() { acctest.PreCheck(t); acctest.PreCheckPartitionHasService(servicediscovery.EndpointsID, t) },
		ErrorCheck:               acctest.ErrorCheck(t, servicediscovery.EndpointsID),
		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
		CheckDestroy:             testAccCheckServiceDestroy,
		Steps: []resource.TestStep{
			{
				Config: testAccServiceConfig_http(rName),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckServiceExists(resourceName),
					acctest.MatchResourceAttrRegionalARN(resourceName, "arn", "servicediscovery", regexp.MustCompile(`service/.+`)),
					resource.TestCheckResourceAttrSet(resourceName, "namespace_id"),
					resource.TestCheckResourceAttr(resourceName, "tags.%", "0"),
				),
			},
			{
				ResourceName:            resourceName,
				ImportState:             true,
				ImportStateVerify:       true,
				ImportStateVerifyIgnore: []string{"force_destroy"},
			},
		},
	})
}

func TestAccServiceDiscoveryService_disappears(t *testing.T) {
	rName := fmt.Sprintf("%s-%s", acctest.ResourcePrefix, sdkacctest.RandStringFromCharSet(8, sdkacctest.CharSetAlpha))
	resourceName := "aws_service_discovery_service.test"

	resource.ParallelTest(t, resource.TestCase{
		PreCheck:                 func() { acctest.PreCheck(t); acctest.PreCheckPartitionHasService(servicediscovery.EndpointsID, t) },
		ErrorCheck:               acctest.ErrorCheck(t, servicediscovery.EndpointsID),
		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
		CheckDestroy:             testAccCheckServiceDestroy,
		Steps: []resource.TestStep{
			{
				Config: testAccServiceConfig_http(rName),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckServiceExists(resourceName),
					acctest.CheckResourceDisappears(acctest.Provider, tfservicediscovery.ResourceService(), resourceName),
				),
				ExpectNonEmptyPlan: true,
			},
		},
	})
}

func TestAccServiceDiscoveryService_tags(t *testing.T) {
	rName := fmt.Sprintf("%s-%s", acctest.ResourcePrefix, sdkacctest.RandStringFromCharSet(8, sdkacctest.CharSetAlpha))
	resourceName := "aws_service_discovery_service.test"

	resource.ParallelTest(t, resource.TestCase{
		PreCheck:                 func() { acctest.PreCheck(t); acctest.PreCheckPartitionHasService(servicediscovery.EndpointsID, t) },
		ErrorCheck:               acctest.ErrorCheck(t, servicediscovery.EndpointsID),
		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
		CheckDestroy:             testAccCheckServiceDestroy,
		Steps: []resource.TestStep{
			{
				Config: testAccServiceConfig_tags1(rName, "key1", "value1"),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckServiceExists(resourceName),
					resource.TestCheckResourceAttr(resourceName, "tags.%", "1"),
					resource.TestCheckResourceAttr(resourceName, "tags.key1", "value1"),
				),
			},
			{
				ResourceName:            resourceName,
				ImportState:             true,
				ImportStateVerify:       true,
				ImportStateVerifyIgnore: []string{"force_destroy"},
			},
			{
				Config: testAccServiceConfig_tags2(rName, "key1", "value1updated", "key2", "value2"),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckServiceExists(resourceName),
					resource.TestCheckResourceAttr(resourceName, "tags.%", "2"),
					resource.TestCheckResourceAttr(resourceName, "tags.key1", "value1updated"),
					resource.TestCheckResourceAttr(resourceName, "tags.key2", "value2"),
				),
			},
			{
				Config: testAccServiceConfig_tags1(rName, "key2", "value2"),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckServiceExists(resourceName),
					resource.TestCheckResourceAttr(resourceName, "tags.%", "1"),
					resource.TestCheckResourceAttr(resourceName, "tags.key2", "value2"),
				),
			},
		},
	})
}

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

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

		_, err := tfservicediscovery.FindServiceByID(context.Background(), conn, rs.Primary.ID)

		if tfresource.NotFound(err) {
			continue
		}

		if err != nil {
			return err
		}

		return fmt.Errorf("Service Discovery Service %s still exists", rs.Primary.ID)
	}

	return nil
}

func testAccCheckServiceExists(n string) resource.TestCheckFunc {
	return func(s *terraform.State) error {
		rs, ok := s.RootModule().Resources[n]
		if !ok {
			return fmt.Errorf("Not found: %s", n)
		}

		if rs.Primary.ID == "" {
			return fmt.Errorf("No Service Discovery Service ID is set")
		}

		conn := acctest.Provider.Meta().(*conns.AWSClient).ServiceDiscoveryConn()

		_, err := tfservicediscovery.FindServiceByID(context.Background(), conn, rs.Primary.ID)

		return err
	}
}

func testAccServiceConfig_private(rName string, th int) string {
	return fmt.Sprintf(`
resource "aws_vpc" "test" {
  cidr_block = "10.0.0.0/16"

  tags = {
    Name = %[1]q
  }
}

resource "aws_service_discovery_private_dns_namespace" "test" {
  name = "%[1]s.test"
  vpc  = aws_vpc.test.id
}

resource "aws_service_discovery_service" "test" {
  name = %[1]q

  dns_config {
    namespace_id = aws_service_discovery_private_dns_namespace.test.id

    dns_records {
      ttl  = 5
      type = "A"
    }
  }

  health_check_custom_config {
    failure_threshold = %[2]d
  }
}
`, rName, th)
}

func testAccServiceConfig_privateUpdate(rName string, th int) string {
	return fmt.Sprintf(`
resource "aws_vpc" "test" {
  cidr_block = "10.0.0.0/16"

  tags = {
    Name = %[1]q
  }
}

resource "aws_service_discovery_private_dns_namespace" "test" {
  name = "%[1]s.test"
  vpc  = aws_vpc.test.id
}

resource "aws_service_discovery_service" "test" {
  name = %[1]q

  description = "test"

  dns_config {
    namespace_id = aws_service_discovery_private_dns_namespace.test.id

    dns_records {
      ttl  = 10
      type = "A"
    }

    dns_records {
      ttl  = 5
      type = "AAAA"
    }

    routing_policy = "MULTIVALUE"
  }

  health_check_custom_config {
    failure_threshold = %[2]d
  }
}
`, rName, th)
}

func testAccServiceConfig_public(rName string, th int, path string) string {
	return fmt.Sprintf(`
resource "aws_service_discovery_public_dns_namespace" "test" {
  name = "%[1]s.test"
}

resource "aws_service_discovery_service" "test" {
  name = %[1]q

  description = "test"

  dns_config {
    namespace_id = aws_service_discovery_public_dns_namespace.test.id

    dns_records {
      ttl  = 5
      type = "A"
    }

    routing_policy = "WEIGHTED"
  }

  health_check_config {
    failure_threshold = %[2]d
    resource_path     = %[3]q
    type              = "HTTP"
  }
}
`, rName, th, path)
}

func testAccServiceConfig_publicUpdateNoHealthCheck(rName string) string {
	return fmt.Sprintf(`
resource "aws_service_discovery_public_dns_namespace" "test" {
  name = "%[1]s.test"
}

resource "aws_service_discovery_service" "test" {
  name = %[1]q

  dns_config {
    namespace_id = aws_service_discovery_public_dns_namespace.test.id

    dns_records {
      ttl  = 5
      type = "A"
    }

    routing_policy = "WEIGHTED"
  }
}
`, rName)
}

func testAccServiceConfig_http(rName string) string {
	return fmt.Sprintf(`
resource "aws_service_discovery_http_namespace" "test" {
  name = %[1]q
}

resource "aws_service_discovery_service" "test" {
  name         = %[1]q
  namespace_id = aws_service_discovery_http_namespace.test.id
}
`, rName)
}

func testAccServiceConfig_tags1(rName, tagKey1, tagValue1 string) string {
	return fmt.Sprintf(`
resource "aws_service_discovery_http_namespace" "test" {
  name = %[1]q
}

resource "aws_service_discovery_service" "test" {
  name         = %[1]q
  namespace_id = aws_service_discovery_http_namespace.test.id

  tags = {
    %[2]q = %[3]q
  }
}
`, rName, tagKey1, tagValue1)
}

func testAccServiceConfig_tags2(rName, tagKey1, tagValue1, tagKey2, tagValue2 string) string {
	return fmt.Sprintf(`
resource "aws_service_discovery_http_namespace" "test" {
  name = %[1]q
}

resource "aws_service_discovery_service" "test" {
  name         = %[1]q
  namespace_id = aws_service_discovery_http_namespace.test.id

  tags = {
    %[2]q = %[3]q
    %[4]q = %[5]q
  }
}
`, rName, tagKey1, tagValue1, tagKey2, tagValue2)
}
