package controller

import (
	"strings"

	zitadelv1alpha1 "gitea.corredorconect.com/software-engineering/zitadel-resources-operator/api/v1alpha1"
	"gitea.corredorconect.com/software-engineering/zitadel-resources-operator/pkg/controller/core"

	"context"
	"fmt"

	clientv2 "github.com/zitadel/zitadel-go/v3/pkg/client"
	"github.com/zitadel/zitadel-go/v3/pkg/client/zitadel/application/v2"
	"sigs.k8s.io/controller-runtime/pkg/client"
	ctrlClient "sigs.k8s.io/controller-runtime/pkg/client"
	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
)

const (
	OIDCAppFinalizerName = "oidcapp.zitadel.topmanage.com/oidcapp"
)

type wrappedOIDCAppFinalizer struct {
	client.Client
	OIDCApp     *zitadelv1alpha1.OIDCApp
	refresolver *zitadelv1alpha1.RefResolver
}

func newWrappedOIDCAppFinalizer(client client.Client, OIDCApp *zitadelv1alpha1.OIDCApp, refresolver *zitadelv1alpha1.RefResolver) core.WrappedCoreFinalizer {
	return &wrappedOIDCAppFinalizer{
		Client:      client,
		OIDCApp:     OIDCApp,
		refresolver: refresolver,
	}
}

func (wf *wrappedOIDCAppFinalizer) AddFinalizer(ctx context.Context) error {
	if wf.ContainsFinalizer() {
		return nil
	}
	return wf.patch(ctx, wf.OIDCApp, func(OIDCApp *zitadelv1alpha1.OIDCApp) {
		controllerutil.AddFinalizer(OIDCApp, OIDCAppFinalizerName)
	})
}

func (wf *wrappedOIDCAppFinalizer) RemoveFinalizer(ctx context.Context) error {
	if !wf.ContainsFinalizer() {
		return nil
	}
	return wf.patch(ctx, wf.OIDCApp, func(OIDCApp *zitadelv1alpha1.OIDCApp) {
		controllerutil.RemoveFinalizer(wf.OIDCApp, OIDCAppFinalizerName)
	})
}

func (wr *wrappedOIDCAppFinalizer) ContainsFinalizer() bool {
	return controllerutil.ContainsFinalizer(wr.OIDCApp, OIDCAppFinalizerName)
}

func (wf *wrappedOIDCAppFinalizer) Reconcile(ctx context.Context, ztdClient *clientv2.Client) error {
	if wf.OIDCApp.Status.AppId != nil {
		projectRef, err := wf.OIDCApp.Project(ctx, wf.refresolver)
		if err != nil {
			return err
		}
		_, err = ztdClient.ApplicationServiceV2().DeleteApplication(ctx, &application.DeleteApplicationRequest{
			ApplicationId: *wf.OIDCApp.Status.AppId,
			ProjectId:     projectRef.ID,
		})
		if err != nil {
			if strings.Contains(err.Error(), "doesn't exist") {
				return nil
			}
			return err
		}
	}
	return nil
}

func (wr *wrappedOIDCAppFinalizer) patch(ctx context.Context, OIDCApp *zitadelv1alpha1.OIDCApp,
	patchFn func(*zitadelv1alpha1.OIDCApp)) error {
	patch := ctrlClient.MergeFrom(OIDCApp.DeepCopy())
	patchFn(OIDCApp)

	if err := wr.Client.Patch(ctx, OIDCApp, patch); err != nil {
		return fmt.Errorf("error patching OIDCApp finalizer: %v", err)
	}
	return nil
}