package connect_test

import (
	"fmt"
	"regexp"
	"testing"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/service/connect"
	"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"
)

//Serialized acceptance tests due to Connect account limits (max 2 parallel tests)
func TestAccConnectInstance_serial(t *testing.T) {
	testCases := map[string]func(t *testing.T){
		"basic":     testAccInstance_basic,
		"directory": testAccInstance_directory,
		"saml":      testAccInstance_saml,
	}

	for name, tc := range testCases {
		tc := tc
		t.Run(name, func(t *testing.T) {
			tc(t)
		})
	}
}

func testAccInstance_basic(t *testing.T) {
	var v connect.DescribeInstanceOutput
	rName := sdkacctest.RandomWithPrefix("resource-test-terraform")
	resourceName := "aws_connect_instance.test"

	resource.Test(t, resource.TestCase{
		PreCheck:          func() { acctest.PreCheck(t) },
		ErrorCheck:        acctest.ErrorCheck(t, connect.EndpointsID),
		ProviderFactories: acctest.ProviderFactories,
		CheckDestroy:      testAccCheckInstanceDestroy,
		Steps: []resource.TestStep{
			{
				Config: testAccInstanceConfig_basic(rName),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckInstanceExists(resourceName, &v),
					acctest.MatchResourceAttrRegionalARN(resourceName, "arn", "connect", regexp.MustCompile(`instance/.+`)),
					resource.TestCheckResourceAttr(resourceName, "auto_resolve_best_voices_enabled", "true"), //verified default result from ListInstanceAttributes()
					resource.TestCheckResourceAttr(resourceName, "contact_flow_logs_enabled", "false"),       //verified default result from ListInstanceAttributes()
					resource.TestCheckResourceAttr(resourceName, "contact_lens_enabled", "true"),             //verified default result from ListInstanceAttributes()
					resource.TestCheckResourceAttrSet(resourceName, "created_time"),
					resource.TestCheckResourceAttr(resourceName, "early_media_enabled", "true"), //verified default result from ListInstanceAttributes()
					resource.TestCheckResourceAttr(resourceName, "identity_management_type", connect.DirectoryTypeConnectManaged),
					resource.TestCheckResourceAttr(resourceName, "inbound_calls_enabled", "true"),
					resource.TestMatchResourceAttr(resourceName, "instance_alias", regexp.MustCompile(rName)),
					resource.TestCheckResourceAttr(resourceName, "outbound_calls_enabled", "true"),
					acctest.MatchResourceAttrGlobalARN(resourceName, "service_role", "iam", regexp.MustCompile(`role/aws-service-role/connect.amazonaws.com/.+`)),
					resource.TestCheckResourceAttr(resourceName, "status", connect.InstanceStatusActive),
				),
			},
			{
				ResourceName:      resourceName,
				ImportState:       true,
				ImportStateVerify: true,
			},
			{
				Config: testAccInstanceConfig_basicFlipped(rName),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckInstanceExists(resourceName, &v),
					acctest.MatchResourceAttrRegionalARN(resourceName, "arn", "connect", regexp.MustCompile(`instance/.+`)),
					resource.TestCheckResourceAttr(resourceName, "auto_resolve_best_voices_enabled", "false"),
					resource.TestCheckResourceAttr(resourceName, "contact_flow_logs_enabled", "true"),
					resource.TestCheckResourceAttr(resourceName, "contact_lens_enabled", "false"),
					resource.TestCheckResourceAttrSet(resourceName, "created_time"),
					resource.TestCheckResourceAttr(resourceName, "early_media_enabled", "false"),
					resource.TestCheckResourceAttr(resourceName, "inbound_calls_enabled", "false"),
					resource.TestMatchResourceAttr(resourceName, "instance_alias", regexp.MustCompile(rName)),
					resource.TestCheckResourceAttr(resourceName, "outbound_calls_enabled", "false"),
					resource.TestCheckResourceAttr(resourceName, "status", connect.InstanceStatusActive),
				),
			},
		},
	})
}

func testAccInstance_directory(t *testing.T) {
	var v connect.DescribeInstanceOutput
	rName := sdkacctest.RandomWithPrefix("resource-test-terraform")
	resourceName := "aws_connect_instance.test"

	domainName := acctest.RandomDomainName()

	resource.Test(t, resource.TestCase{
		PreCheck:          func() { acctest.PreCheck(t) },
		ErrorCheck:        acctest.ErrorCheck(t, connect.EndpointsID),
		ProviderFactories: acctest.ProviderFactories,
		CheckDestroy:      testAccCheckInstanceDestroy,
		Steps: []resource.TestStep{
			{
				Config: testAccInstanceConfig_directory(rName, domainName),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckInstanceExists(resourceName, &v),
					resource.TestCheckResourceAttr(resourceName, "identity_management_type", connect.DirectoryTypeExistingDirectory),
					resource.TestCheckResourceAttr(resourceName, "status", connect.InstanceStatusActive),
				),
			},
			{
				ResourceName:            resourceName,
				ImportState:             true,
				ImportStateVerify:       true,
				ImportStateVerifyIgnore: []string{"directory_id"},
			},
		},
	})
}

func testAccInstance_saml(t *testing.T) {
	var v connect.DescribeInstanceOutput
	rName := sdkacctest.RandomWithPrefix("resource-test-terraform")
	resourceName := "aws_connect_instance.test"

	resource.Test(t, resource.TestCase{
		PreCheck:          func() { acctest.PreCheck(t) },
		ErrorCheck:        acctest.ErrorCheck(t, connect.EndpointsID),
		ProviderFactories: acctest.ProviderFactories,
		CheckDestroy:      testAccCheckInstanceDestroy,
		Steps: []resource.TestStep{
			{
				Config: testAccInstanceConfig_saml(rName),
				Check: resource.ComposeTestCheckFunc(
					resource.TestCheckResourceAttr(resourceName, "identity_management_type", connect.DirectoryTypeSaml),
					testAccCheckInstanceExists(resourceName, &v),
				),
			},
			{
				ResourceName:      resourceName,
				ImportState:       true,
				ImportStateVerify: true,
			},
		},
	})
}

func testAccCheckInstanceExists(resourceName string, instance *connect.DescribeInstanceOutput) resource.TestCheckFunc {
	return func(s *terraform.State) error {
		rs, ok := s.RootModule().Resources[resourceName]
		if !ok {
			return fmt.Errorf("Connect instance not found: %s", resourceName)
		}

		if rs.Primary.ID == "" {
			return fmt.Errorf("Connect instance ID not set")
		}

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

		input := &connect.DescribeInstanceInput{
			InstanceId: aws.String(rs.Primary.ID),
		}

		output, err := conn.DescribeInstance(input)
		if err != nil {
			return err
		}
		if output == nil {
			return fmt.Errorf("Connect instance %q does not exist", rs.Primary.ID)
		}

		*instance = *output

		return nil
	}
}

func testAccCheckInstanceDestroy(s *terraform.State) error {
	for _, rs := range s.RootModule().Resources {
		if rs.Type != "aws_connect_instance" {
			continue
		}

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

		instanceID := rs.Primary.ID

		input := &connect.DescribeInstanceInput{
			InstanceId: aws.String(instanceID),
		}

		_, err := conn.DescribeInstance(input)

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

		if err != nil {
			return err
		}
	}

	return nil
}

func testAccInstanceConfig_basic(rName string) string {
	return fmt.Sprintf(`
resource "aws_connect_instance" "test" {
  identity_management_type = "CONNECT_MANAGED"
  inbound_calls_enabled    = true
  instance_alias           = %[1]q
  outbound_calls_enabled   = true
}
`, rName)
}

func testAccInstanceConfig_basicFlipped(rName string) string {
	return fmt.Sprintf(`
resource "aws_connect_instance" "test" {
  auto_resolve_best_voices_enabled = false
  contact_flow_logs_enabled        = true
  contact_lens_enabled             = false
  early_media_enabled              = false
  identity_management_type         = "CONNECT_MANAGED"
  inbound_calls_enabled            = false
  instance_alias                   = %[1]q
  outbound_calls_enabled           = false
}
`, rName)
}

func testAccInstanceConfig_directory(rName, domain string) string {
	return fmt.Sprintf(`
data "aws_availability_zones" "available" {
  state = "available"

  filter {
    name   = "opt-in-status"
    values = ["opt-in-not-required"]
  }
}

resource "aws_vpc" "test" {
  cidr_block = "10.0.0.0/16"
  tags = {
    Name = "terraform-testacc-directory-service-directory-tags"
  }
}

resource "aws_subnet" "test1" {
  vpc_id            = aws_vpc.test.id
  availability_zone = data.aws_availability_zones.available.names[0]
  cidr_block        = "10.0.1.0/24"
  tags = {
    Name = "tf-acc-directory-service-directory-foo"
  }
}

resource "aws_subnet" "test2" {
  vpc_id            = aws_vpc.test.id
  availability_zone = data.aws_availability_zones.available.names[1]
  cidr_block        = "10.0.2.0/24"
  tags = {
    Name = "tf-acc-directory-service-directory-test"
  }
}

resource "aws_directory_service_directory" "test" {
  name     = %[2]q
  password = "SuperSecretPassw0rd"
  size     = "Small"

  vpc_settings {
    vpc_id     = aws_vpc.test.id
    subnet_ids = [aws_subnet.test1.id, aws_subnet.test2.id]
  }
}

resource "aws_connect_instance" "test" {
  directory_id             = aws_directory_service_directory.test.id
  identity_management_type = "EXISTING_DIRECTORY"
  instance_alias           = %[1]q
  inbound_calls_enabled    = true
  outbound_calls_enabled   = true
}
`, rName, domain)
}

func testAccInstanceConfig_saml(rName string) string {
	return fmt.Sprintf(`
resource "aws_connect_instance" "test" {
  identity_management_type = "SAML"
  instance_alias           = %[1]q
  inbound_calls_enabled    = true
  outbound_calls_enabled   = true
}
`, rName)
}
