// Copyright 2020 the Pinniped contributors. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0

package testutil

import (
	"context"
	"mime"
	"net/http/httptest"
	"testing"
	"time"

	"github.com/stretchr/testify/require"
	v12 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/labels"
	v1 "k8s.io/client-go/kubernetes/typed/core/v1"
)

func RequireTimeInDelta(t *testing.T, t1 time.Time, t2 time.Time, delta time.Duration) {
	require.InDeltaf(t,
		float64(t1.UnixNano()),
		float64(t2.UnixNano()),
		float64(delta.Nanoseconds()),
		"expected %s and %s to be < %s apart, but they are %s apart",
		t1.Format(time.RFC3339Nano),
		t2.Format(time.RFC3339Nano),
		delta.String(),
		t1.Sub(t2).String(),
	)
}

func RequireEqualContentType(t *testing.T, actual string, expected string) {
	t.Helper()

	if expected == "" {
		require.Empty(t, actual)
		return
	}

	actualContentType, actualContentTypeParams, err := mime.ParseMediaType(expected)
	require.NoError(t, err)
	expectedContentType, expectedContentTypeParams, err := mime.ParseMediaType(expected)
	require.NoError(t, err)
	require.Equal(t, actualContentType, expectedContentType)
	require.Equal(t, actualContentTypeParams, expectedContentTypeParams)
}

func RequireNumberOfSecretsMatchingLabelSelector(t *testing.T, secrets v1.SecretInterface, labelSet labels.Set, expectedNumberOfSecrets int) {
	t.Helper()
	storedAuthcodeSecrets, err := secrets.List(context.Background(), v12.ListOptions{
		LabelSelector: labelSet.String(),
	})
	require.NoError(t, err)
	require.Len(t, storedAuthcodeSecrets.Items, expectedNumberOfSecrets)
}

func RequireSecurityHeaders(t *testing.T, response *httptest.ResponseRecorder) {
	require.Equal(t, "default-src 'none'; frame-ancestors 'none'", response.Header().Get("Content-Security-Policy"))
	require.Equal(t, "DENY", response.Header().Get("X-Frame-Options"))
	require.Equal(t, "1; mode=block", response.Header().Get("X-XSS-Protection"))
	require.Equal(t, "nosniff", response.Header().Get("X-Content-Type-Options"))
	require.Equal(t, "no-referrer", response.Header().Get("Referrer-Policy"))
	require.Equal(t, "off", response.Header().Get("X-DNS-Prefetch-Control"))
	require.ElementsMatch(t, []string{"no-cache", "no-store", "max-age=0", "must-revalidate"}, response.Header().Values("Cache-Control"))
	require.Equal(t, "no-cache", response.Header().Get("Pragma"))
	require.Equal(t, "0", response.Header().Get("Expires"))
}