/**
 * Script inline exécuté avant l’hydratation : même logique que `applyDocumentTheme`.
 */
import { normalizeThemeId } from './apply-document-theme'

export function getThemeScript(serverTheme: string = 'light', serverAccentColor: string | null = null) {
  const fallback = normalizeThemeId(serverTheme)
  const defaultAccent = serverAccentColor || '#A47148'
  return `
(function() {
  try {
    var fallback = ${JSON.stringify(fallback)};
    var stored = localStorage.getItem('theme-preference');
    var raw = stored || fallback;
    if (raw === 'slate') raw = 'light';
    var allowed = { light:1, dark:1, auto:1, sepia:1, midnight:1, rose:1, green:1, lavender:1, sand:1, ocean:1, sunset:1, blue:1 };
    var theme = allowed[raw] ? raw : 'light';
    var root = document.documentElement;
    root.classList.remove('dark');
    root.removeAttribute('data-theme');
    if (theme === 'auto') {
      if (window.matchMedia('(prefers-color-scheme: dark)').matches) root.classList.add('dark');
    } else if (theme === 'dark') {
      root.classList.add('dark');
    } else if (theme === 'light') {
      /* :root papier */
    } else {
      root.setAttribute('data-theme', theme);
      if (theme === 'midnight') root.classList.add('dark');
    }
    var accentStored = localStorage.getItem('accent-color');
    var effectiveAccent = accentStored || ${JSON.stringify(defaultAccent)};
    root.style.setProperty('--color-brand-accent', effectiveAccent);
  } catch (e) {
    console.error('Theme script error', e);
  }
})();
  `.trim()
}