package templates_test

import (
	"bytes"
	"html/template"
	"strings"
	"testing"

	"git.eeqj.de/sneak/routewatch/internal/templates"
)

// TestFooterLicense renders the home and status pages and expects each footer
// to name the licence in LICENSE, MIT, and not WTFPL.
func TestFooterLicense(t *testing.T) {
	t.Parallel()

	const (
		license      = "MIT"
		wrongLicense = "WTFPL"
	)

	pages := map[string]*template.Template{
		"index":  templates.IndexTemplate(),
		"status": templates.StatusTemplate(),
	}

	for name, tmpl := range pages {
		t.Run(name, func(t *testing.T) {
			t.Parallel()

			var page bytes.Buffer

			err := tmpl.Execute(&page, struct{ CSPNonce string }{})
			if err != nil {
				t.Fatalf("rendering the page: %v", err)
			}

			_, footer, found := strings.Cut(page.String(), "<footer")
			if !found {
				t.Fatal("the page has no footer")
			}

			footer, _, _ = strings.Cut(footer, "</footer>")

			if !strings.Contains(footer, license) {
				t.Errorf("footer does not name %s: %q", license, footer)
			}

			if strings.Contains(footer, wrongLicense) {
				t.Errorf("footer names %s: %q", wrongLicense, footer)
			}
		})
	}
}