package controller

import (
	zitadelv1alpha1 "github.com/HaimKortovich/zitadel-k8s-operator/api/v1alpha1"
	"github.com/HaimKortovich/zitadel-k8s-operator/pkg/controller/zitadel"

	"context"
	"fmt"

	"github.com/zitadel/zitadel-go/v3/pkg/client/management"
	"github.com/zitadel/zitadel-go/v3/pkg/client/middleware"
	pb "github.com/zitadel/zitadel-go/v3/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 (
	flowFinalizerName = "flow.zitadel.topmanage.com/flow"
)

type wrappedFlowFinalizer struct {
	client.Client
	flow        *zitadelv1alpha1.Flow
	refresolver *zitadelv1alpha1.RefResolver
}

func newWrappedFlowFinalizer(client client.Client, flow *zitadelv1alpha1.Flow, refresolver *zitadelv1alpha1.RefResolver) zitadel.WrappedFinalizer {
	return &wrappedFlowFinalizer{
		Client:      client,
		flow:        flow,
		refresolver: refresolver,
	}
}

func (wf *wrappedFlowFinalizer) AddFinalizer(ctx context.Context) error {
	if wf.ContainsFinalizer() {
		return nil
	}
	return wf.patch(ctx, wf.flow, func(flow *zitadelv1alpha1.Flow) {
		controllerutil.AddFinalizer(flow, flowFinalizerName)
	})
}

func (wf *wrappedFlowFinalizer) RemoveFinalizer(ctx context.Context) error {
	if !wf.ContainsFinalizer() {
		return nil
	}
	return wf.patch(ctx, wf.flow, func(flow *zitadelv1alpha1.Flow) {
		controllerutil.RemoveFinalizer(wf.flow, flowFinalizerName)
	})
}

func (wr *wrappedFlowFinalizer) ContainsFinalizer() bool {
	return controllerutil.ContainsFinalizer(wr.flow, flowFinalizerName)
}

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

	_, err = ztdClient.ClearFlow(middleware.SetOrgID(ctx, org.Status.OrgId), &pb.ClearFlowRequest{
		Type: wf.flow.Spec.FlowType,
	})
	if err != nil {
		return err
	}
	return nil
}

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

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