package controller

import (
	"strings"

	zitadelv1alpha1 "bitbucket.org/topmanage-software-engineering/zitadel-k8s-operator/src/api/v1alpha1"
	"bitbucket.org/topmanage-software-engineering/zitadel-k8s-operator/src/pkg/controller/zitadel"

	"context"
	"fmt"

	"github.com/zitadel/zitadel-go/v2/pkg/client/management"
	"github.com/zitadel/zitadel-go/v2/pkg/client/middleware"
	pb "github.com/zitadel/zitadel-go/v2/pkg/client/zitadel/management"
	"sigs.k8s.io/controller-runtime/pkg/client"
	ctrlClient "sigs.k8s.io/controller-runtime/pkg/client"
	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
)

const (
	projectFinalizerName = "project.zitadel.topmanage.com/project"
)

type wrappedProjectFinalizer struct {
	client.Client
	project     *zitadelv1alpha1.Project
	refresolver *zitadelv1alpha1.RefResolver
}

func newWrappedProjectFinalizer(client client.Client, project *zitadelv1alpha1.Project, refresolver *zitadelv1alpha1.RefResolver) zitadel.WrappedFinalizer {
	return &wrappedProjectFinalizer{
		Client:      client,
		project:     project,
		refresolver: refresolver,
	}
}

func (wf *wrappedProjectFinalizer) AddFinalizer(ctx context.Context) error {
	if wf.ContainsFinalizer() {
		return nil
	}
	return wf.patch(ctx, wf.project, func(project *zitadelv1alpha1.Project) {
		controllerutil.AddFinalizer(project, projectFinalizerName)
	})
}

func (wf *wrappedProjectFinalizer) RemoveFinalizer(ctx context.Context) error {
	if !wf.ContainsFinalizer() {
		return nil
	}
	return wf.patch(ctx, wf.project, func(project *zitadelv1alpha1.Project) {
		controllerutil.RemoveFinalizer(wf.project, projectFinalizerName)
	})
}

func (wr *wrappedProjectFinalizer) ContainsFinalizer() bool {
	return controllerutil.ContainsFinalizer(wr.project, projectFinalizerName)
}

func (wf *wrappedProjectFinalizer) Reconcile(ctx context.Context, ztdClient *management.Client) error {
	if wf.project.Status.ProjectId == "" {
		return nil
	}
	org, err := wf.refresolver.OrganizationRef(ctx, &wf.project.Spec.OrganizationRef, wf.project.Namespace)
	if err != nil {
		return err
	}
	{

		_, err := ztdClient.GetProjectByID(middleware.SetOrgID(ctx, org.Status.OrgId), &pb.GetProjectByIDRequest{Id: wf.project.Status.ProjectId})
		if err != nil {
			if strings.Contains(err.Error(), `not found`) {
				return nil
			}
			return err
		}
	}
	_, err = ztdClient.RemoveProject(middleware.SetOrgID(ctx, org.Status.OrgId), &pb.RemoveProjectRequest{Id: wf.project.Status.ProjectId})
	if err != nil {
		return err
	}
	return nil
}

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

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