package webui

import (
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"
)

// TestTOTPSetupRendersRealQRImage guards against a real html/template bug found live:
// html/template's URL-context escaper only allows http/https/mailto schemes for a plain
// string in a src="..." attribute — a data: URI (how the QR code image is embedded, see
// totpSetupBegin) gets silently replaced with "#ZgotmplZ" unless typed as template.URL,
// making the QR code invisible with no server-side error at all.
func TestTOTPSetupRendersRealQRImage(t *testing.T) {
	app := newTestApp(t)
	mux := app.Mux()
	cookie := loginSession(t, app)

	req := httptest.NewRequest(http.MethodPost, Prefix+"/account/totp/setup", nil)
	req.AddCookie(cookie)
	rec := httptest.NewRecorder()
	mux.ServeHTTP(rec, req)

	if rec.Code != http.StatusOK {
		t.Fatalf("status=%d body=%s", rec.Code, rec.Body.String())
	}
	body := rec.Body.String()
	if strings.Contains(body, "ZgotmplZ") {
		t.Fatal("QR image src was stripped to #ZgotmplZ — qr_data_uri must be typed as template.URL")
	}
	if !strings.Contains(body, "src=\"data:image/png;base64,") {
		t.Fatalf("expected a real data:image/png;base64 QR image src in the response, got: %s", body)
	}
}

// TestWebmailTOTPSetupRendersRealQRImage is the mailbox self-service equivalent of the
// admin-side test above — same bug, same fix, in webmailTOTPSetupBegin.
func TestWebmailTOTPSetupRendersRealQRImage(t *testing.T) {
	app := newTestApp(t)
	mux := app.Mux()
	domains, _ := app.DB.ListDomains()
	mailboxID := createTestMailboxWithPassword(t, app, "totpuser@example.com", domains[0].ID, "portal-password-123!")
	cookie := webmailLoginSession(t, app, mailboxID)

	req := httptest.NewRequest(http.MethodPost, MailboxPrefix+"/account/totp/setup", nil)
	req.AddCookie(cookie)
	rec := httptest.NewRecorder()
	mux.ServeHTTP(rec, req)

	if rec.Code != http.StatusOK {
		t.Fatalf("status=%d body=%s", rec.Code, rec.Body.String())
	}
	body := rec.Body.String()
	if strings.Contains(body, "ZgotmplZ") {
		t.Fatal("QR image src was stripped to #ZgotmplZ — qr_data_uri must be typed as template.URL")
	}
	if !strings.Contains(body, "src=\"data:image/png;base64,") {
		t.Fatalf("expected a real data:image/png;base64 QR image src in the response, got: %s", body)
	}
}
