// Copyright (c) 2021 Gitpod GmbH. All rights reserved.
// Licensed under the GNU Affero General Public License (AGPL).
// See License.AGPL.txt in the project root for license information.

package wsdaemon

import (
	"fmt"

	"github.com/gitpod-io/gitpod/installer/pkg/common"
	"github.com/gitpod-io/gitpod/installer/pkg/config/v1/experimental"

	rbacv1 "k8s.io/api/rbac/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/runtime"
)

func clusterrole(ctx *common.RenderContext) ([]runtime.Object, error) {
	labels := common.DefaultLabels(Component)

	var rules []rbacv1.PolicyRule

	_ = ctx.WithExperimental(func(cfg *experimental.Config) error {
		if cfg.Common != nil && cfg.Common.UsePodSecurityPolicies {
			rules = append(rules, rbacv1.PolicyRule{
				APIGroups: []string{"policy"},
				Resources: []string{"podsecuritypolicies"},
				Verbs:     []string{"use"},
				ResourceNames: []string{
					fmt.Sprintf("%s-ns-privileged-unconfined", ctx.Namespace),
				},
			})
		}
		return nil
	})

	return []runtime.Object{
		&rbacv1.ClusterRole{
			TypeMeta: common.TypeMetaClusterRole,
			ObjectMeta: metav1.ObjectMeta{
				Name:   fmt.Sprintf("%s-ns-%s", ctx.Namespace, Component),
				Labels: labels,
			},
			Rules: append(rules,
				rbacv1.PolicyRule{
					APIGroups: []string{""},
					Resources: []string{"nodes"},
					Verbs:     []string{"get", "list", "update", "patch"},
				},
				rbacv1.PolicyRule{
					APIGroups: []string{""},
					Resources: []string{"pods", "services"},
					Verbs:     []string{"get", "list", "watch"},
				},
				rbacv1.PolicyRule{
					APIGroups: []string{""},
					Resources: []string{"pods"},
					Verbs:     []string{"delete", "update", "patch"},
				},
				rbacv1.PolicyRule{
					APIGroups: []string{"workspace.gitpod.io"},
					Resources: []string{"workspaces"},
					Verbs: []string{
						"get",
						"list",
						"watch",
					},
				},
				rbacv1.PolicyRule{
					APIGroups: []string{"workspace.gitpod.io"},
					Resources: []string{"workspaces/status"},
					Verbs: []string{
						"get",
						"patch",
						"update",
					},
				},
			),
		},
	}, nil
}