package aks

import (
	"context"

	xpv1 "github.com/crossplane/crossplane-runtime/apis/common/v1"
	"github.com/tidbcloud/infra-provider/regional-server/pkg/controllers"
	"github.com/upbound/provider-aws/apis/iam/v1beta1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/utils/ptr"

	"github.com/tidbcloud/infra-provider/regional-server/api/v1alpha1"
	"github.com/tidbcloud/infra-provider/regional-server/pkg/applier"
	"github.com/tidbcloud/infra-provider/regional-server/pkg/applier/mutatefuncs"
	"github.com/tidbcloud/infra-provider/regional-server/pkg/controllers/appbox/task"
	"github.com/tidbcloud/infra-provider/regional-server/pkg/deploy"
	"github.com/tidbcloud/infra-provider/regional-server/pkg/namer"
)

// OIDC task create an oidc provider in aws to auth some aks pods.
// e.g cert-manager PCA issuer, sli-reporter, ...
type OIDC struct {
	*task.BaseTask
}

func NewOIDC(ctx *task.Context) *OIDC {
	return &OIDC{
		BaseTask: &task.BaseTask{Context: ctx},
	}
}

func (t *OIDC) Name() string {
	return "OIDC"
}

func (t *OIDC) Create(ctx context.Context) deploy.Result {
	if _, err := applier.NewApplier(t.Local, mutatefuncs.MutateUpboundIAMOpenIDConnectProvider).
		Expected(t.NewOIDCProvider(false)).
		Apply(ctx); err != nil {
		return deploy.Error(err)
	}

	return deploy.Done()
}

func (t *OIDC) Delete(ctx context.Context) deploy.Result {
	if err := controllers.DeleteUpboundResource(ctx, t.Local, t.NewOIDCProvider(true)); err != nil {
		return deploy.Error(err)
	}
	return deploy.Done()
}

func (t *OIDC) NewOIDCProvider(onlyMeta bool) *v1beta1.OpenIDConnectProvider {
	name := namer.UniqueIdentifier(t.APPBox.ObjectMeta)
	if t.APPBox.Annotations[v1alpha1.AnnotationKeyOwnCrossplaneNameOIDCProvider] != "" {
		name = t.APPBox.Annotations[v1alpha1.AnnotationKeyOwnCrossplaneNameOIDCProvider]
	}
	oidc := &v1beta1.OpenIDConnectProvider{
		ObjectMeta: metav1.ObjectMeta{
			Name: name,
		},
	}
	if onlyMeta {
		return oidc
	}

	oidc.Spec = v1beta1.OpenIDConnectProviderSpec{
		ForProvider: v1beta1.OpenIDConnectProviderParameters{
			ClientIDList: []*string{
				ptr.To("sts.amazonaws.com"),
			},
			ThumbprintList: []*string{
				ptr.To("0000000000000000000000000000000000000000"),
			},
			// nil pointer checker in create func, and it won't be executed when deleting
			URL: ptr.To(t.Cluster.GetOIDCURL()),
		},
		ResourceSpec: xpv1.ResourceSpec{
			ProviderConfigReference: &xpv1.Reference{Name: t.Config.AWSCrossplaneProviderConfig},
			ManagementPolicies:      controllers.GetResourceManagementPolicies()},
	}
	return oidc

}