/**
 * 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;
    try {
      document.cookie = 'memento-theme=' + encodeURIComponent(theme) + '; path=/; max-age=31536000; SameSite=Lax';
      if (!stored) localStorage.setItem('theme-preference', theme);
    } catch (e) {}
    var wantsDark = theme === 'dark' || theme === 'midnight' || (theme === 'auto' && window.matchMedia('(prefers-color-scheme: dark)').matches);
    if (wantsDark) root.classList.add('dark');
    else root.classList.remove('dark');
    if (theme === 'auto' || theme === 'dark' || theme === 'light') root.removeAttribute('data-theme');
    else {
      root.setAttribute('data-theme', theme);
    }
    root.setAttribute('data-applied-theme', theme);
    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()
}