package identitystore_test

import (
	"context"
	"errors"
	"fmt"
	"testing"

	"github.com/aws/aws-sdk-go-v2/aws"
	"github.com/aws/aws-sdk-go-v2/service/identitystore"
	"github.com/aws/aws-sdk-go-v2/service/identitystore/types"
	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"
	"github.com/hashicorp/terraform-provider-aws/internal/create"
	tfidentitystore "github.com/hashicorp/terraform-provider-aws/internal/service/identitystore"
	"github.com/hashicorp/terraform-provider-aws/names"
)

func TestAccIdentityStoreGroupMembership_basic(t *testing.T) {
	var groupMembership identitystore.DescribeGroupMembershipOutput

	userResourceName := "aws_identitystore_user.test"
	groupResourceName := "aws_identitystore_group.test"
	resourceName := "aws_identitystore_group_membership.test"

	rName1 := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix) // Group Name
	rName2 := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix) // User Name

	resource.ParallelTest(t, resource.TestCase{
		PreCheck: func() {
			acctest.PreCheck(t)
			acctest.PreCheckPartitionHasService(names.IdentityStoreEndpointID, t)
			testAccPreCheck(t)
		},
		ErrorCheck:               acctest.ErrorCheck(t, names.IdentityStoreEndpointID),
		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
		CheckDestroy:             testAccCheckGroupMembershipDestroy,
		Steps: []resource.TestStep{
			{
				Config: testAccGroupMembershipConfig_basic(rName1, rName2),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckGroupMembershipExists(resourceName, &groupMembership),
					resource.TestCheckResourceAttrPair(resourceName, "member_id", userResourceName, "user_id"),
					resource.TestCheckResourceAttrPair(resourceName, "group_id", groupResourceName, "group_id"),
					resource.TestCheckResourceAttrSet(resourceName, "identity_store_id"),
					resource.TestCheckResourceAttrSet(resourceName, "membership_id"),
				),
			},
			{
				ResourceName:      resourceName,
				ImportState:       true,
				ImportStateVerify: true,
			},
		},
	})
}

func TestAccIdentityStoreGroupMembership_disappears(t *testing.T) {
	var groupMembership identitystore.DescribeGroupMembershipOutput

	rName1 := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix) // Group Name
	rName2 := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix) // User Name

	resourceName := "aws_identitystore_group_membership.test"

	resource.ParallelTest(t, resource.TestCase{
		PreCheck: func() {
			acctest.PreCheck(t)
			acctest.PreCheckPartitionHasService(names.IdentityStoreEndpointID, t)
			testAccPreCheckSSOAdminInstances(t)
			testAccPreCheck(t)
		},
		ErrorCheck:               acctest.ErrorCheck(t, names.IdentityStoreEndpointID),
		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
		CheckDestroy:             testAccCheckGroupMembershipDestroy,
		Steps: []resource.TestStep{
			{
				Config: testAccGroupMembershipConfig_basic(rName1, rName2),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckGroupMembershipExists(resourceName, &groupMembership),
					acctest.CheckResourceDisappears(acctest.Provider, tfidentitystore.ResourceGroupMembership(), resourceName),
				),
				ExpectNonEmptyPlan: true,
			},
		},
	})
}

func TestAccIdentityStoreGroupMembership_GroupId(t *testing.T) {
	var groupMembership identitystore.DescribeGroupMembershipOutput

	groupResourceName := "aws_identitystore_group.test"
	resourceName := "aws_identitystore_group_membership.test"

	rName1 := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix) // Group Name 1
	rName2 := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix) // Group Name 2
	rName3 := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix) // User Name

	resource.ParallelTest(t, resource.TestCase{
		PreCheck: func() {
			acctest.PreCheck(t)
			acctest.PreCheckPartitionHasService(names.IdentityStoreEndpointID, t)
			testAccPreCheck(t)
		},
		ErrorCheck:               acctest.ErrorCheck(t, names.IdentityStoreEndpointID),
		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
		CheckDestroy:             testAccCheckGroupMembershipDestroy,
		Steps: []resource.TestStep{
			{
				Config: testAccGroupMembershipConfig_basic(rName1, rName3),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckGroupMembershipExists(resourceName, &groupMembership),
					resource.TestCheckResourceAttrPair(resourceName, "group_id", groupResourceName, "group_id"),
				),
			},
			{
				ResourceName:      resourceName,
				ImportState:       true,
				ImportStateVerify: true,
			},
			{
				Config: testAccGroupMembershipConfig_basic(rName2, rName3),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckGroupMembershipExists(resourceName, &groupMembership),
					resource.TestCheckResourceAttrPair(resourceName, "group_id", groupResourceName, "group_id"),
				),
			},
		},
	})
}

func TestAccIdentityStoreGroupMembership_MemberId(t *testing.T) {
	var groupMembership identitystore.DescribeGroupMembershipOutput

	groupResourceName := "aws_identitystore_user.test"
	resourceName := "aws_identitystore_group_membership.test"

	rName1 := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix) // Group Name
	rName2 := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix) // User Name 1
	rName3 := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix) // User Name 2

	resource.ParallelTest(t, resource.TestCase{
		PreCheck: func() {
			acctest.PreCheck(t)
			acctest.PreCheckPartitionHasService(names.IdentityStoreEndpointID, t)
			testAccPreCheck(t)
		},
		ErrorCheck:               acctest.ErrorCheck(t, names.IdentityStoreEndpointID),
		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
		CheckDestroy:             testAccCheckGroupMembershipDestroy,
		Steps: []resource.TestStep{
			{
				Config: testAccGroupMembershipConfig_basic(rName1, rName2),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckGroupMembershipExists(resourceName, &groupMembership),
					resource.TestCheckResourceAttrPair(resourceName, "member_id", groupResourceName, "user_id"),
				),
			},
			{
				ResourceName:      resourceName,
				ImportState:       true,
				ImportStateVerify: true,
			},
			{
				Config: testAccGroupMembershipConfig_basic(rName1, rName3),
				Check: resource.ComposeTestCheckFunc(
					testAccCheckGroupMembershipExists(resourceName, &groupMembership),
					resource.TestCheckResourceAttrPair(resourceName, "member_id", groupResourceName, "user_id"),
				),
			},
		},
	})
}

func testAccCheckGroupMembershipDestroy(s *terraform.State) error {
	conn := acctest.Provider.Meta().(*conns.AWSClient).IdentityStoreConn
	ctx := context.Background()

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

		_, err := conn.DescribeGroupMembership(ctx, &identitystore.DescribeGroupMembershipInput{
			IdentityStoreId: aws.String(rs.Primary.Attributes["identity_store_id"]),
			MembershipId:    aws.String(rs.Primary.Attributes["membership_id"]),
		})
		if err != nil {
			var nfe *types.ResourceNotFoundException
			if errors.As(err, &nfe) {
				return nil
			}
			return err
		}

		return create.Error(names.IdentityStore, create.ErrActionCheckingDestroyed, tfidentitystore.ResNameGroupMembership, rs.Primary.ID, errors.New("not destroyed"))
	}

	return nil
}

func testAccCheckGroupMembershipExists(name string, groupMembership *identitystore.DescribeGroupMembershipOutput) resource.TestCheckFunc {
	return func(s *terraform.State) error {
		rs, ok := s.RootModule().Resources[name]
		if !ok {
			return create.Error(names.IdentityStore, create.ErrActionCheckingExistence, tfidentitystore.ResNameGroupMembership, name, errors.New("not found"))
		}

		if rs.Primary.ID == "" {
			return create.Error(names.IdentityStore, create.ErrActionCheckingExistence, tfidentitystore.ResNameGroupMembership, name, errors.New("not set"))
		}

		conn := acctest.Provider.Meta().(*conns.AWSClient).IdentityStoreConn
		ctx := context.Background()
		resp, err := conn.DescribeGroupMembership(ctx, &identitystore.DescribeGroupMembershipInput{
			IdentityStoreId: aws.String(rs.Primary.Attributes["identity_store_id"]),
			MembershipId:    aws.String(rs.Primary.Attributes["membership_id"]),
		})

		if err != nil {
			return create.Error(names.IdentityStore, create.ErrActionCheckingExistence, tfidentitystore.ResNameGroupMembership, rs.Primary.ID, err)
		}

		*groupMembership = *resp

		return nil
	}
}

func testAccGroupMembershipConfig_basic(groupName, userName string) string {
	return fmt.Sprintf(`
data "aws_ssoadmin_instances" "test" {}

resource "aws_identitystore_user" "test" {
  identity_store_id = tolist(data.aws_ssoadmin_instances.test.identity_store_ids)[0]

  display_name = "Acceptance Test"
  user_name    = %[1]q

  name {
    family_name = "Doe"
    given_name  = "John"
  }
}

resource "aws_identitystore_group" "test" {
  identity_store_id = tolist(data.aws_ssoadmin_instances.test.identity_store_ids)[0]
  display_name      = %[2]q
  description       = "Acceptance Test"
}

resource "aws_identitystore_group_membership" "test" {
  identity_store_id = tolist(data.aws_ssoadmin_instances.test.identity_store_ids)[0]

  group_id  = aws_identitystore_group.test.group_id
  member_id = aws_identitystore_user.test.user_id
}
`, userName, groupName)
}
