package changefeed

import (
	"fmt"
	"github.com/tidbcloud/dataflow-service-e2e/cases"
	"github.com/tidbcloud/dataflow-service-e2e/cases/essential/common"
	"github.com/tidbcloud/dataflow-service-e2e/internal/config"
	. "github.com/tidbcloud/dataflow-service-e2e/internal/model"
	"github.com/tidbcloud/dataflow-service-e2e/internal/tidbcloud/essential"
	"time"
)

type CDCScaleCase struct {
	cases.BaseCase
	provider CloudProviderType
}

func NewCDCScaleCase(provider CloudProviderType) cases.E2ECase {
	return &CDCScaleCase{provider: provider}
}
func (c *CDCScaleCase) Name() string {
	return fmt.Sprintf("%sEssentialV1CDCScaleLifecycleSmoke", c.provider)
}
func (c *CDCScaleCase) Tags() map[string]string {
	return map[string]string{cases.TagKeyDomain: config.DomainCDC, cases.TagKeyAPIModes: common.APIModesBoth}
}
func (c *CDCScaleCase) DeclareDependencyRequirements() map[string]DependencyRequirement {
	region := config.GlobalConfig.DefaultRegionOf(c.provider)
	return map[string]DependencyRequirement{
		"essential": &TiDBServerlessRequirement{
			Dedicated: true,
			TiDBServerlessDimensions: TiDBServerlessDimensions{
				CloudProvider: c.provider,
				Region:        region,
				ServicePlan:   essential.ServicePlanEssential,
			},
		},
		"kafka": &KafkaRequirement{KafkaDimensions: KafkaDimensions{
			NetworkType: DataflowNetworkTypeNetworkTypePublic,
			AuthType:    DataflowKafkaAuthTypeSASLPLAIN,
		}},
	}
}
func (c *CDCScaleCase) Run() {
	cluster, kafka := c.TiDBServerless("essential"), c.Kafka("kafka")
	client := essential.NewCDCClient()
	specs, err := client.Specifications(c.Context(), cluster)
	c.Step("list CDC specifications", func() error { return err })
	if len(specs) < 2 {
		c.Step("require two CDC specifications", func() error { return fmt.Errorf("only %d CDC specifications available", len(specs)) })
		return
	}
	request := essential.ChangefeedSpec{Name: c.Name(), SinkType: essential.ChangefeedSinkKafka, Kafka: kafka, Topic: c.Name() + "-topic", Filters: []string{"e2e_essential.*"}, RCU: specs[0].RCU}
	var id string
	defer func() { cleanupChangefeed(&c.BaseCase, client, cluster, id) }()
	c.Step("create scalable changefeed", func() error { var err error; id, err = client.Create(c.Context(), cluster, request); return err })
	c.Expect("scalable changefeed running", func() error {
		d, err := client.Get(c.Context(), cluster, id)
		if err != nil {
			return err
		}
		return common.ValidateChangefeedState(d.State, "RUNNING")
	}, 60, 15*time.Second)
	c.Step("scale changefeed", func() error { return client.Scale(c.Context(), cluster, id, specs[1].RCU) })
	expectScaled(&c.BaseCase, client, cluster, id, specs[1].RCU)
	marker := c.Name() + "-scaled-event"
	c.Step("verify event after scale", func() error { return verifyScaledEvent(cluster, kafka, request.Topic, marker) })
}