package webapiserverless

import (
	"strings"
	"testing"
	"time"

	"github.com/samber/lo"
	"github.com/spf13/viper"
	"github.com/stretchr/testify/suite"
	"google.golang.org/protobuf/proto"

	"github.com/tidbcloud/tidb-management-service/functional-test/pkg/coreportalapi"
	"github.com/tidbcloud/tidb-management-service/functional-test/pkg/coreportalapi/model"
	"github.com/tidbcloud/tidb-management-service/functional-test/pkg/serverlesssvc"
	"github.com/tidbcloud/tidb-management-service/functional-test/pkg/tidbcloudlogin"
	"github.com/tidbcloud/tidb-management-service/utilities/randstr"
)

// TestServerlessCreateMinimalCluster verifies end-to-end cluster creation and cleanup
// by initializing a client, creating a cluster, checking its status,
// running SQL test queries, and deleting the cluster.
func TestServerlessCreateMinimalCluster(t *testing.T) {
	testSuite := &TestServerlessCreateMinimalClusterSuite{
		WebApiLoginContext: &tidbcloudlogin.WebApiLoginContext{
			Host:              viper.GetString("host"),
			Auth0Domain:       viper.GetString("auth0_domain"),
			Auth0ClientID:     viper.GetString("auth0_client_id"),
			Auth0ClientSecret: viper.GetString("auth0_client_secret"),
			UserEmail:         viper.GetString("user_email"),
			BearerToken:       viper.GetString("bearer_token"),
		},

		orgID:             viper.GetString("org_id"),
		prjID:             viper.GetString("prj_id"),
		clusterNamePrefix: viper.GetString("cluster_name_prefix"),

		nodeProfileName: "Shared0",
		provider:        "aws",
		region:          "us-east-1",
		password:        randstr.GenWithCharset(16, randstr.AlphabetCharset),
		spendLimit:      1000, // 10 USD
	}

	testSuite.clusterName = testSuite.clusterNamePrefix + randstr.GenWithCharset(4, randstr.AlphabetCharset)
	testSuite.components = []*model.CentralClusterComponent{
		{
			ComponentType:   lo.ToPtr(model.CentralComponentTypeCOMPONENTTYPETIDB),
			NodeProfileName: lo.ToPtr(testSuite.nodeProfileName),
			Replicas:        lo.ToPtr(int32(1)),
			StorageSizeGi:   lo.ToPtr(int32(0)),
		},
		{
			ComponentType:   lo.ToPtr(model.CentralComponentTypeCOMPONENTTYPETIKV),
			NodeProfileName: lo.ToPtr(testSuite.nodeProfileName),
			Replicas:        lo.ToPtr(int32(1)),
			StorageSizeGi:   lo.ToPtr(int32(1)),
		},
		{
			ComponentType:   lo.ToPtr(model.CentralComponentTypeCOMPONENTTYPETIFLASH),
			NodeProfileName: lo.ToPtr(testSuite.nodeProfileName),
			Replicas:        lo.ToPtr(int32(1)),
			StorageSizeGi:   lo.ToPtr(int32(1)),
		},
	}

	suite.Run(t, testSuite)
}

type TestServerlessCreateMinimalClusterSuite struct {
	suite.Suite

	*tidbcloudlogin.WebApiLoginContext

	orgID             string
	prjID             string
	clusterNamePrefix string

	nodeProfileName string
	provider        string
	region          string
	password        string
	clusterName     string
	components      []*model.CentralClusterComponent
	spendLimit      int64

	serverlessCli *serverlesssvc.Cli
	cmCli         *coreportalapi.Cli

	clusterID  string
	userPrefix string
}

func (su *TestServerlessCreateMinimalClusterSuite) TearDownSuite() {
	if su.clusterID != "" {
		su.cmCli.EnsureDeleteCluster(su.orgID, su.prjID, su.clusterName)
	}
}

func (su *TestServerlessCreateMinimalClusterSuite) Test_01_LoginAndInitializeClient() {
	token, err := su.LoginAndGetToken(su.orgID)
	su.Require().NoError(err)

	su.cmCli, err = coreportalapi.NewClient(&su.Suite, su.Host, token)
	su.Require().NoError(err)
	su.Require().NotNil(su.cmCli)
	su.serverlessCli, err = serverlesssvc.NewClient(&su.Suite, su.Host, token)
	su.Require().NoError(err)
	su.Require().NotNil(su.serverlessCli)
}

func (su *TestServerlessCreateMinimalClusterSuite) Test_02_ListClusters() {
	_ = su.cmCli.ListClusters(su.orgID, su.prjID, 1, 100)
}

func (su *TestServerlessCreateMinimalClusterSuite) Test_03_ListProvidersAndSelectAwsUsEast1() {
	providers := su.cmCli.ListProviders(su.orgID, su.prjID, true)

	p, ok := lo.Find(providers, func(p *model.CentralCloudProvider) bool {
		return p != nil && p.Name != nil && *p.Name == su.provider
	})
	su.Require().True(ok)
	su.Require().NotNil(p.Regions)
	_, ok = lo.Find(p.Regions, func(r *model.CentralRegion) bool {
		return r != nil && r.Name != nil && *r.Name == su.region
	})
	su.Require().True(ok)
}

// serverless svc rbac is not unexpected
// org owner and project owner can not predict spend limit
// remove this test case temporarily
// func (su *TestServerlessCreateMinimalClusterSuite) Test_04_CheckProjectSpendLimits() {
// 	_ = su.serverlessCli.ListOrgSpendLimits(su.orgID)
// }

func (su *TestServerlessCreateMinimalClusterSuite) Test_05_GenerateClusterName() {
	_ = su.cmCli.GenerateClusterName(su.orgID, su.prjID)
}

// billing service rbac is not unexpected
// org owner and project owner can not predict spend limit
// remove this test case temporarily
// func (su *TestServerlessCreateMinimalClusterSuite) Test_06_PredictSpendLimit() {
// 	_ = su.serverlessCli.PredictSpendLimit(su.orgID, su.region, su.spendLimit)
// }

func (su *TestServerlessCreateMinimalClusterSuite) Test_07_CreateCluster() {
	su.clusterID = *su.cmCli.CreateCluster(su.orgID, su.prjID, su.provider, su.region, su.clusterName, 4000, su.components, true, su.spendLimit)
	su.Require().NotEmpty(su.clusterID)
}

func (su *TestServerlessCreateMinimalClusterSuite) Test_08_PollClusterStatus() {
	// timeout: 10 minutes (600 seconds)
	for range 60 {
		status := su.cmCli.PollClusterStatus(su.orgID, su.prjID, su.clusterID)
		if *status == model.CentralClusterStatusNORMAL {
			break
		}
		su.T().Logf("cluster status: %s", *status)
		time.Sleep(10 * time.Second)
	}
}

func (su *TestServerlessCreateMinimalClusterSuite) Test_09_ListServerlessCluster() {
	resp := su.cmCli.ListClustersAllowBizErr(su.orgID, su.prjID, 1, 100, proto.Bool(true))
	su.Require().NotNil(resp)
	su.Require().True(resp.BaseResp == nil || resp.BaseResp.ErrCode == "0", "The error code should be 0")
	su.Require().NotEmpty(resp.Items)
}

func (su *TestServerlessCreateMinimalClusterSuite) Test_10_GetCluster() {
	c := su.cmCli.GetCluster(su.orgID, su.prjID, su.clusterID)
	su.userPrefix = c.Endpoint.Token
}

func (su *TestServerlessCreateMinimalClusterSuite) Test_11_SetPassword() {
	// su.T().Logf("sleep 10 seconds before setting password")
	// su.T().Logf("serverless cluster normal 之后立刻发起 ChangeRootPassword 请求，会 500. serverless team 瑜庆正在定位。")
	// time.Sleep(10 * time.Second)
	su.cmCli.SetPassword(su.orgID, su.prjID, su.clusterID, su.password)
}

func (su *TestServerlessCreateMinimalClusterSuite) Test_12_ExecuteSql() {
	for range 30 {
		time.Sleep(10 * time.Second)
		err := su.cmCli.ExecuteSql(su.orgID, su.prjID, su.clusterID, su.userPrefix, su.password, "skip-verify")
		switch {
		case err == nil:
			// Success.
			return
		case strings.Contains(err.Error(), "connection refused"),
			strings.Contains(err.Error(), "no such host"),
			strings.Contains(err.Error(), "i/o timeout"):
			// Retry if the connection is refused.
			// Dns propagation may take some time.
		default:
			su.Fail(err.Error())
		}
	}
}

func (su *TestServerlessCreateMinimalClusterSuite) Test_13_EnsureDeleteCluster() {
	su.cmCli.EnsureDeleteCluster(su.orgID, su.prjID, su.clusterName)
}