package clusteraction

import (
	"context"
	"fmt"

	opent "github.com/tidbcloud/devops/entity/operation"
	"github.com/tidbcloud/devops/pkg/service/operation/actions"
	mgmtv1 "github.com/tidbcloud/tidb-management-service/api/spec/tidb_mgmt_service/v1"
	"google.golang.org/protobuf/encoding/protojson"
)

var (
	ActionApplyHeterogeneousDeploy = opent.ActionMetadata{
		Name: "ApplyHeterogeneousDeploy",
		Type: opent.ActionTypeAuto,
	}
)

type applyHeterogeneousDeploy struct {
	actions.BaseAction
	comps *actions.Components
}

func NewApplyHeterogeneousDeploy(comps *actions.Components) actions.AutoAction {
	return &applyHeterogeneousDeploy{comps: comps}
}

func (a *applyHeterogeneousDeploy) Metadata() opent.ActionMetadata {
	return ActionApplyHeterogeneousDeploy
}

func (a *applyHeterogeneousDeploy) PreCheck(ctx context.Context, instance *opent.Instance) error {
	_, err := a.getParam(instance)
	return err
}

func (a *applyHeterogeneousDeploy) Start(ctx context.Context, instance *opent.Instance) (*actions.ActionResult, error) {
	req, err := a.getParam(instance)
	if err != nil {
		return actions.FailedActionResult(err), nil
	}

	_, err = a.comps.CoreSvc.Mgmt.Cluster.ApplyGKEHeterogeneousDeploy(ctx, req)
	if err != nil {
		return actions.FailedActionResult(err), nil
	}

	return actions.SucceededActionResult(nil), nil
}

func (a *applyHeterogeneousDeploy) Result(ctx context.Context, instance *opent.Instance) (*actions.ActionResult, error) {
	return actions.SucceededActionResult(nil), nil
}

func (a *applyHeterogeneousDeploy) OnCancel(ctx context.Context, instance *opent.Instance) (bool, error) {
	return false, nil
}

func (a *applyHeterogeneousDeploy) getParam(instance *opent.Instance) (*mgmtv1.ApplyGKEHeterogeneousDeployRequest, error) {
	_, err := instance.GetUintParam(opent.ParamClusterID)
	if err != nil {
		return nil, err
	}

	data := instance.Params[opent.ParamApplyHeterogeneousDeployRequest]
	if data == "" {
		return nil, fmt.Errorf("missing required param")
	}

	req := &mgmtv1.ApplyGKEHeterogeneousDeployRequest{}
	err = protojson.Unmarshal([]byte(data), req)
	if err != nil {
		return nil, fmt.Errorf("unmarshal param failed: %w", err)
	}

	return req, nil
}