package modelserving_test

import (
	"context"
	"fmt"
	"strings"
	"testing"

	"github.com/hashicorp/terraform-plugin-testing/helper/resource"
	"github.com/hashicorp/terraform-plugin-testing/terraform"
	"github.com/stackitcloud/stackit-sdk-go/core/config"
	"github.com/stackitcloud/stackit-sdk-go/core/utils"
	"github.com/stackitcloud/stackit-sdk-go/services/modelserving"
	"github.com/stackitcloud/stackit-sdk-go/services/modelserving/wait"
	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/core"
	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/testutil"
)

// Token resource data
var tokenResource = map[string]string{
	"project_id":          testutil.ProjectId,
	"name":                "token01",
	"description":         "my description",
	"description_updated": "my description updated",
	"region":              testutil.Region,
	"ttl_duration":        "1h",
}

func inputTokenConfig(name, description string) string {
	return fmt.Sprintf(`
		%s

		resource "stackit_modelserving_token" "token" {
			project_id = "%s"
			region = "%s"
			name = "%s"
			description = "%s"
			ttl_duration = "%s"
		}
		`,
		testutil.ModelServingProviderConfig(),
		tokenResource["project_id"],
		tokenResource["region"],
		name,
		description,
		tokenResource["ttl_duration"],
	)
}

func TestAccModelServingTokenResource(t *testing.T) {
	resource.Test(t, resource.TestCase{
		ProtoV6ProviderFactories: testutil.TestAccProtoV6ProviderFactories,
		CheckDestroy:             testAccCheckModelServingTokenDestroy,
		Steps: []resource.TestStep{
			// Creation
			{
				Config: inputTokenConfig(
					tokenResource["name"],
					tokenResource["description"],
				),
				Check: resource.ComposeAggregateTestCheckFunc(
					resource.TestCheckResourceAttr("stackit_modelserving_token.token", "project_id", tokenResource["project_id"]),
					resource.TestCheckResourceAttr("stackit_modelserving_token.token", "region", tokenResource["region"]),
					resource.TestCheckResourceAttr("stackit_modelserving_token.token", "name", tokenResource["name"]),
					resource.TestCheckResourceAttr("stackit_modelserving_token.token", "description", tokenResource["description"]),
					resource.TestCheckResourceAttr("stackit_modelserving_token.token", "ttl_duration", tokenResource["ttl_duration"]),
					resource.TestCheckResourceAttrSet("stackit_modelserving_token.token", "token_id"),
					resource.TestCheckResourceAttrSet("stackit_modelserving_token.token", "state"),
					resource.TestCheckResourceAttrSet("stackit_modelserving_token.token", "valid_until"),
					resource.TestCheckResourceAttrSet("stackit_modelserving_token.token", "token"),
				),
			},
			// Update
			{
				Config: inputTokenConfig(
					tokenResource["name"],
					tokenResource["description_updated"],
				),
				Check: resource.ComposeAggregateTestCheckFunc(
					resource.TestCheckResourceAttr("stackit_modelserving_token.token", "project_id", tokenResource["project_id"]),
					resource.TestCheckResourceAttr("stackit_modelserving_token.token", "region", tokenResource["region"]),
					resource.TestCheckResourceAttr("stackit_modelserving_token.token", "name", tokenResource["name"]),
					resource.TestCheckResourceAttr("stackit_modelserving_token.token", "description", tokenResource["description_updated"]),
					resource.TestCheckResourceAttrSet("stackit_modelserving_token.token", "token_id"),
					resource.TestCheckResourceAttrSet("stackit_modelserving_token.token", "state"),
					resource.TestCheckResourceAttrSet("stackit_modelserving_token.token", "valid_until"),
				),
			},
			// Deletion is done by the framework implicitly
		},
	})
}

func testAccCheckModelServingTokenDestroy(s *terraform.State) error {
	ctx := context.Background()
	var client *modelserving.APIClient
	var err error

	if testutil.ModelServingCustomEndpoint == "" {
		client, err = modelserving.NewAPIClient()
	} else {
		client, err = modelserving.NewAPIClient(
			config.WithEndpoint(testutil.ModelServingCustomEndpoint),
		)
	}

	if err != nil {
		return fmt.Errorf("creating client: %w", err)
	}

	tokensToDestroy := []string{}
	for _, rs := range s.RootModule().Resources {
		if rs.Type != "stackit_modelserving_token" {
			continue
		}

		// Token terraform ID: "[project_id],[region],[token_id]"
		idParts := strings.Split(rs.Primary.ID, core.Separator)
		if len(idParts) != 3 {
			return fmt.Errorf("invalid ID: %s", rs.Primary.ID)
		}
		if idParts[2] != "" {
			tokensToDestroy = append(tokensToDestroy, idParts[2])
		}
	}

	if len(tokensToDestroy) == 0 {
		return nil
	}

	tokensResp, err := client.ListTokens(ctx, testutil.Region, testutil.ProjectId).Execute()
	if err != nil {
		return fmt.Errorf("getting tokensResp: %w", err)
	}

	if tokensResp.Tokens == nil || (tokensResp.Tokens != nil && len(*tokensResp.Tokens) == 0) {
		fmt.Print("No tokens found for project \n")
		return nil
	}

	items := *tokensResp.Tokens
	for i := range items {
		if items[i].Name == nil {
			continue
		}
		if utils.Contains(tokensToDestroy, *items[i].Name) {
			_, err := client.DeleteToken(ctx, testutil.Region, testutil.ProjectId, *items[i].Id).Execute()
			if err != nil {
				return fmt.Errorf("destroying token %s during CheckDestroy: %w", *items[i].Name, err)
			}
			_, err = wait.DeleteModelServingWaitHandler(ctx, client, testutil.Region, testutil.ProjectId, *items[i].Id).WaitWithContext(ctx)
			if err != nil {
				return fmt.Errorf("destroying token %s during CheckDestroy: waiting for deletion %w", *items[i].Name, err)
			}
		}
	}
	return nil
}