package policy

import (
	"testing"

	kyvernov2alpha1 "github.com/kyverno/kyverno/api/kyverno/v2alpha1"
	"github.com/stretchr/testify/assert"
	admissionregistrationv1 "k8s.io/api/admissionregistration/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)

func Test_compiler_Compile(t *testing.T) {
	tests := []struct {
		name    string
		policy  *kyvernov2alpha1.ValidatingPolicy
		wantErr bool
	}{{
		name: "simple",
		policy: &kyvernov2alpha1.ValidatingPolicy{
			TypeMeta: metav1.TypeMeta{
				APIVersion: kyvernov2alpha1.GroupVersion.String(),
				Kind:       "ValidatingPolicy",
			},
			ObjectMeta: metav1.ObjectMeta{
				Name: "foo",
			},
			Spec: kyvernov2alpha1.ValidatingPolicySpec{
				ValidatingAdmissionPolicySpec: admissionregistrationv1.ValidatingAdmissionPolicySpec{
					Variables: []admissionregistrationv1.Variable{{
						Name:       "environment",
						Expression: "has(object.metadata.labels) && 'env' in object.metadata.labels && object.metadata.labels['env'] == 'prod'",
					}},
					Validations: []admissionregistrationv1.Validation{{
						Expression: "variables.environment == true",
					}},
				},
			},
		},
	}, {
		name: "with configmap",
		policy: &kyvernov2alpha1.ValidatingPolicy{
			TypeMeta: metav1.TypeMeta{
				APIVersion: kyvernov2alpha1.GroupVersion.String(),
				Kind:       "ValidatingPolicy",
			},
			ObjectMeta: metav1.ObjectMeta{
				Name: "foo",
			},
			Spec: kyvernov2alpha1.ValidatingPolicySpec{
				ValidatingAdmissionPolicySpec: admissionregistrationv1.ValidatingAdmissionPolicySpec{
					Variables: []admissionregistrationv1.Variable{{
						Name:       "cm",
						Expression: "context.GetConfigMap('foo', 'bar')",
					}},
					Validations: []admissionregistrationv1.Validation{{
						Expression: "variables.cm != null",
					}},
				},
			},
		},
	}}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			c := NewCompiler()
			compiled, errs := c.Compile(tt.policy, nil)
			if tt.wantErr {
				assert.Error(t, errs.ToAggregate())
			} else {
				assert.NoError(t, errs.ToAggregate())
				assert.NotNil(t, compiled)
			}
		})
	}
}