// Package controller 将 Database 用例接入 Kubernetes 事件和重试调度。
package controller

import (
	"context"
	"time"

	"git.ddupan.top/panxiao81/ayatori/internal/database/application"
	ctrl "sigs.k8s.io/controller-runtime"
	"sigs.k8s.io/controller-runtime/pkg/client"
)

const dependencyRetry = 30 * time.Second

type BindingReconciler struct {
	Client    client.Client
	Service   *application.BindingService
	Presenter BindingPresenter
}

type BindingPresenter interface {
	Present(context.Context, application.BindingResult) error
}

func NewBindingReconciler(cache client.Client, service *application.BindingService, presenter BindingPresenter) *BindingReconciler {
	return &BindingReconciler{Client: cache, Service: service, Presenter: presenter}
}

// +kubebuilder:rbac:groups=database.ayatori.ddupan.top,resources=postgresqltenants,verbs=get;list;watch;update;patch
// +kubebuilder:rbac:groups=database.ayatori.ddupan.top,resources=postgresqltenants/status,verbs=get;update;patch
// +kubebuilder:rbac:groups=database.ayatori.ddupan.top,resources=postgresqltenants/finalizers,verbs=update
// +kubebuilder:rbac:groups=database.ayatori.ddupan.top,resources=postgresqldatabases,verbs=get;list;watch;create;update;patch
// +kubebuilder:rbac:groups=database.ayatori.ddupan.top,resources=postgresqldatabases/status,verbs=get;update;patch
// +kubebuilder:rbac:groups=database.ayatori.ddupan.top,resources=postgresqldatabases/finalizers,verbs=update
// +kubebuilder:rbac:groups=database.ayatori.ddupan.top,resources=postgresqlinstances,verbs=get;list;watch

func (r *BindingReconciler) Reconcile(ctx context.Context, request ctrl.Request) (ctrl.Result, error) {
	result, err := r.Service.Reconcile(ctx, request.Namespace, request.Name)
	if err != nil {
		return ctrl.Result{}, err
	}
	if err := r.Presenter.Present(ctx, result); err != nil {
		return ctrl.Result{}, err
	}
	if result.RetrySoon {
		return ctrl.Result{RequeueAfter: time.Millisecond}, nil
	}
	if result.Tenant == nil {
		return ctrl.Result{}, nil
	}
	// watch 是主入口，低频重查覆盖依赖事件映射失败，不做冲突忙循环。
	return ctrl.Result{RequeueAfter: dependencyRetry}, nil
}