package br

import (
	"context"
	"fmt"

	"github.com/mitchellh/mapstructure"
	opv1alpha1 "github.com/pingcap/tidb-operator/pkg/apis/pingcap/v1alpha1"
	apierrors "k8s.io/apimachinery/pkg/api/errors"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"sigs.k8s.io/controller-runtime/pkg/client"
	"sigs.k8s.io/controller-runtime/pkg/log"

	"github.com/tidbcloud/eks-provider/controllers/workflow/action"
	cloudv1 "github.com/tidbcloud/infra-api/api/v1"
	"github.com/tidbcloud/infra-provider/pkg/dataplane"
	"github.com/tidbcloud/infra-provider/pkg/k8s"
)

type deleteRestore struct {
	cli            client.Client
	cachedProvider dataplane.EnvProviderManager
}

type deleteRestoreInputs struct {
	Namespace   string `mapstructure:"namespace" validate:"required"`
	Name        string `mapstructure:"name" validate:"required"`
	ClusterName string `mapstructure:"clusterName" validate:"required"`
}

func NewDeleteRestore(cli client.Client, cachedProvider dataplane.EnvProviderManager) action.Action {
	return &deleteRestore{cli: cli, cachedProvider: cachedProvider}
}

func (a *deleteRestore) Name() cloudv1.WorkflowActionName {
	return "DeleteRestoreAction"
}

func (a *deleteRestore) PreCheck(ctx context.Context, wf *cloudv1.Workflow, step cloudv1.WorkflowStep) error {
	inputs := &deleteRestoreInputs{}
	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 *deleteRestore) Handle(ctx context.Context, wf *cloudv1.Workflow, step cloudv1.WorkflowStep) error {
	logger := log.FromContext(ctx)
	// stepStatus, _ := wf.StepStatus(ctx, step.Name)

	inputs := &deleteRestoreInputs{}
	_ = mapstructure.Decode(step.Inputs.Object, inputs)

	cluster := &cloudv1.Cluster{}
	if err := a.cli.Get(ctx, client.ObjectKey{Namespace: inputs.Namespace, Name: inputs.ClusterName}, cluster); err != nil {
		if apierrors.IsNotFound(err) {
			return cloudv1.NewWFNonRetriableError(fmt.Errorf("cluster %s not found", inputs.ClusterName))
		}
		return fmt.Errorf("get cluster: %w", err)
	}

	remoteCli, err := a.cachedProvider.GetClient(ctx, cluster)
	if err != nil {
		return fmt.Errorf("get dataplane cli: %w", err)
	}

	logger.Info("delete restore in dataplane for cluster", "cluster", fmt.Sprintf("%s/%s", inputs.Namespace, inputs.ClusterName))
	restore := &opv1alpha1.Restore{
		ObjectMeta: metav1.ObjectMeta{
			Namespace: cluster.Namespace,
			Name:      inputs.Name,
		},
	}
	if err := k8s.DeleteObjectCompleted(ctx, remoteCli, restore); err != nil {
		return err
	}
	return nil
}