package cluster

import (
	"context"
	"fmt"

	"github.com/mitchellh/mapstructure"
	"sigs.k8s.io/controller-runtime/pkg/client"

	"github.com/tidbcloud/eks-provider/controllers/workflow/action"
	cloudv1 "github.com/tidbcloud/infra-api/api/v1"
	"github.com/tidbcloud/infra-provider/pkg/consts"
)

var _ action.Action = &updateClusterStatus{}

type updateClusterStatus struct {
	cli client.Client
}

type updateClusterStatusInputs struct {
	Name        string `mapstructure:"name" json:"name" validate:"required"`
	Namespace   string `mapstructure:"namespace" json:"namespace" validate:"required"`
	NodeVersion string `mapstructure:"nodeVersion" json:"nodeVersion" validate:"required"`
}

func NewUpdateClusterStatus(cli client.Client) action.Action {
	return &updateClusterStatus{cli: cli}
}

func (a *updateClusterStatus) Name() cloudv1.WorkflowActionName {
	return consts.WfActionUpdateClusterStatusAction
}

func (a *updateClusterStatus) PreCheck(ctx context.Context, wf *cloudv1.Workflow, step cloudv1.WorkflowStep) error {
	inputs := &updateClusterStatusInputs{}
	if err := mapstructure.Decode(step.Inputs.Object, inputs); err != nil {
		return fmt.Errorf("decode inputs: %w", err)
	}
	if err := validate.Struct(inputs); err != nil {
		return fmt.Errorf("validate inputs: %w", err)
	}
	return nil
}

func (a *updateClusterStatus) Handle(ctx context.Context, wf *cloudv1.Workflow, step cloudv1.WorkflowStep) error {
	inputs := &updateClusterStatusInputs{}
	_ = mapstructure.Decode(step.Inputs.Object, inputs)

	cluster, err := getCluster(ctx, a.cli, client.ObjectKey{Namespace: inputs.Namespace, Name: inputs.Name})
	if err != nil {
		return err
	}

	if err := cloudv1.UpdateClusterStatus(cluster, func(status *cloudv1.CommonK8sClusterStatus) bool {
		status.NodeVersion = inputs.NodeVersion
		return true
	}); err != nil {
		return fmt.Errorf("failed to update cluster status: %w", err)
	}

	return a.cli.Status().Update(ctx, cluster)
}