const translations = {
  de: {
    // Common
    save: 'Speichern', cancel: 'Abbrechen', close: 'Schliessen',
    create: 'Erstellen', delete: 'Löschen', edit: 'Bearbeiten',
    name: 'Name', username: 'Benutzername', password: 'Passwort',
    email: 'E-Mail', color: 'Farbe', color_pick: 'Farbe wählen',
    loading: 'Lade…', connecting: 'Verbinde…',
    unknown_error: 'Unbekannter Fehler',

    // Setup
    setup_title: 'Ersteinrichtung',
    setup_subtitle: 'Erstelle den Administrator-Account',
    setup_email: 'E-Mail (optional)',
    setup_pw_confirm: 'Passwort wiederholen',
    setup_submit: 'Admin-Account erstellen',
    setup_pw_mismatch: 'Passwörter stimmen nicht überein',
    setup_pw_short: 'Passwort muss mindestens 6 Zeichen haben',

    // Login
    login_tagline: 'das minimalistische Kalender Frontend',
    login_submit: 'Anmelden',
    login_2fa_ph: '6-stelliger Code',

    // Topbar
    btn_today: 'Heute',
    view_month: 'Monat', view_week: 'Woche', view_day: 'Tag', view_agenda: 'Termine',

    // Sidebar
    btn_create: 'Erstellen',
    my_calendars: 'Meine Kalender',
    add_calendar: 'Kalender hinzufügen',
    cal_local: 'Lokaler Kalender', cal_caldav: 'CalDAV-Konto',
    cal_ical: 'iCal-URL abonnieren', cal_google: 'Google Kalender',

    // Event modal
    event_create_title: 'Termin erstellen', event_edit_title: 'Termin bearbeiten',
    event_title_ph: 'Titel hinzufügen', event_allday: 'Ganztägig',
    event_start: 'Start', event_end: 'Ende', event_calendar: 'Kalender',
    event_location: 'Ort', event_location_ph: 'Ort hinzufügen',
    event_description: 'Beschreibung', event_description_ph: 'Beschreibung hinzufügen',

    // CalDAV modal
    caldav_add_title: 'CalDAV-Konto hinzufügen',
    caldav_display_name: 'Anzeigename', caldav_display_name_ph: 'z.B. Mein Nextcloud',
    caldav_url: 'CalDAV-URL', caldav_connect: 'Verbinden',

    // Local calendar modal
    localcal_create_title: 'Lokalen Kalender erstellen',
    localcal_name_ph: 'z.B. Persönlich',

    // iCal modal
    ical_title: 'iCal-URL abonnieren', ical_name_ph: 'z.B. Feiertage',
    ical_url_label: 'iCal-URL', ical_refresh: 'Aktualisierung',
    ical_15min: 'Alle 15 Minuten', ical_30min: 'Alle 30 Minuten',
    ical_hourly: 'Stündlich', ical_6h: 'Alle 6 Stunden', ical_daily: 'Täglich',
    ical_subscribe: 'Abonnieren',

    // Settings
    settings_title: 'Einstellungen',
    settings_nav_appearance: 'Darstellung',
    settings_nav_google: 'Google Konten',
    settings_nav_users: 'Benutzerverwaltung',
    settings_colors: 'Farben',
    settings_primary_color: 'Primärfarbe', settings_accent_color: 'Akzentfarbe',
    settings_today_color: 'Heutige-Tag-Farbe',
    settings_text_contrast: 'Schriftkontrast',
    settings_text_contrast_desc: 'Helligkeit der Beschriftungen und Texte',
    contrast_dark: 'Dunkel', contrast_medium: 'Mittel',
    contrast_light: 'Hell', contrast_max: 'Maximum',
    settings_line_contrast: 'Linienkontrast',
    settings_line_contrast_desc: 'Sichtbarkeit von Trennlinien und Rahmen',
    line_barely: 'Kaum', line_subtle: 'Subtil',
    line_normal: 'Normal', line_strong: 'Stark',
    settings_calendar_view: 'Kalenderansicht',
    settings_default_view: 'Standardansicht',
    settings_week_start: 'Erster Wochentag',
    week_start_monday: 'Montag', week_start_sunday: 'Sonntag',
    settings_dim_past: 'Vergangene Termine ausgrauen',
    settings_hour_height: 'Stundenhöhe (Wochen- & Tagesansicht)',
    settings_hour_height_desc: 'Wie viel Platz eine Stunde in der Zeitrasteransicht einnimmt',
    hour_compact: 'Kompakt', hour_normal: 'Normal',
    hour_comfort: 'Komfort', hour_large: 'Gross',
    settings_language: 'Sprache',
    settings_hidden_cals: 'Ausgeblendete Kalender',
    settings_no_hidden_cals: 'Keine ausgeblendeten Kalender',
    settings_no_google: 'Keine Google-Konten verbunden',

    // User management
    users_add: 'Benutzer hinzufügen', users_is_admin: 'Administrator',

    // Profile
    profile_title: 'Profil', profile_upload: 'Bild hochladen',
    profile_remove_avatar: 'Entfernen', profile_account: 'Konto',
    profile_email_ph: 'Keine E-Mail hinterlegt',
    profile_change_pw: 'Passwort ändern',
    profile_pw_current: 'Aktuelles Passwort', profile_pw_new: 'Neues Passwort',
    profile_pw_confirm: 'Neues Passwort wiederholen',
    profile_2fa: 'Zwei-Faktor-Authentifizierung',
    profile_2fa_disabled_text: '2FA ist deaktiviert. Schütze dein Konto mit einem Authenticator.',
    profile_2fa_setup: '2FA einrichten',
    profile_2fa_scan: 'Scanne den QR-Code mit deiner Authenticator-App (z.B. Bitwarden, Google Authenticator).',
    profile_2fa_manual: 'Oder gib diesen Schlüssel manuell ein',
    profile_2fa_copy: 'Kopieren', profile_2fa_code_label: 'Bestätigungscode eingeben',
    profile_2fa_ph: '6-stelliger Code', profile_2fa_activate: 'Aktivieren',
    profile_2fa_enabled_text: '2FA ist aktiviert.',
    profile_2fa_pw_disable: 'Passwort zum Deaktivieren',
    profile_2fa_disable: '2FA deaktivieren',
    profile_my_calendars: 'Meine Kalender',

    // Avatar crop
    crop_title: 'Bildausschnitt wählen', crop_submit: 'Zuschneiden & Hochladen',

    // Impressum
    impressum_title: 'Impressum',
    impressum_desc: 'Software & Webentwicklung',
    impressum_about: 'Diese Software wurde von Scarriffleservices mit grösster Sorgfalt entwickelt und bereitgestellt. Alle Rechte vorbehalten\u00a0© 2026 Scarriffleservices.',
    impressum_data_title: 'Datenspeicherung',
    impressum_data_text: 'Alle Anwendungsdaten werden ausschliesslich in der Schweiz gespeichert und verarbeitet. Bei Nutzung der Google Kalender-Anbindung werden Daten über die Google API abgerufen, welche von Google auf deren Infrastruktur ausserhalb der Schweiz verarbeitet werden. Für diese Daten gelten die Datenschutzbestimmungen von Google.',
    impressum_disclaimer_title: 'Haftungsausschluss',
    impressum_disclaimer_text: 'Trotz sorgfältiger Erstellung wird keine Haftung für die Richtigkeit, Vollständigkeit oder Aktualität der bereitgestellten Inhalte übernommen. Die Nutzung erfolgt auf eigene Verantwortung.',
    impressum_contact: 'Kontakt',

    // Toast / confirms
    error_load_events: 'Fehler beim Laden der Termine',
    error_no_calendars: 'Keine Kalender',
    confirm_delete_local_cal: 'Lokalen Kalender wirklich löschen?',
    confirm_remove_ical: 'Abonnement wirklich entfernen?',
    google_not_configured: 'Google OAuth ist nicht konfiguriert (Admin muss GOOGLE_CLIENT_ID/SECRET setzen)',
    error_enter_title: 'Bitte Titel eingeben',
    error_enter_date: 'Bitte Datum eingeben',
    error_enter_start: 'Bitte Start-Zeit eingeben',
    event_updated: 'Termin aktualisiert', event_created: 'Termin erstellt',
    confirm_delete_event: '"{title}" wirklich löschen?',
    event_deleted: 'Termin gelöscht',
    error_fill_all: 'Bitte alle Felder ausfüllen',
    account_added: 'Konto "{name}" hinzugefügt',
    error_enter_name: 'Bitte Name eingeben',
    calendar_created: 'Kalender "{name}" erstellt',
    error_name_url: 'Bitte Name und URL eingeben',
    ical_subscribed: '"{name}" abonniert',
    google_synced: 'Kalender synchronisiert',
    confirm_google_disconnect: 'Google-Konto wirklich trennen?',
    google_disconnected: 'Google-Konto getrennt',
    error_username_password: 'Benutzername und Passwort erforderlich',
    user_created: 'Benutzer "{name}" erstellt',
    settings_saved: 'Einstellungen gespeichert',
    no_caldav: 'Keine CalDAV-Konten verbunden.',
    profile_saved: 'Profil gespeichert',
    avatar_removed: 'Profilbild entfernt',
    avatar_uploaded: 'Profilbild hochgeladen',
    error_pw_mismatch: 'Passwörter stimmen nicht überein',
    error_pw_length: 'Mindestens 6 Zeichen',
    password_changed: 'Passwort geändert',
    key_copied: 'Schlüssel kopiert',
    error_enter_6digit: 'Bitte 6-stelligen Code eingeben',
    totp_enabled: '2FA aktiviert', totp_disabled: '2FA deaktiviert',
    error_enter_password: 'Bitte Passwort eingeben',
    confirm_delete_user: 'Benutzer löschen?',
    show_cal: 'Einblenden', hide_cal: 'Ausblenden',
    remove_cal: 'Kalender entfernen', remove_ical_sub: 'Abo entfernen',
    change_color: 'Farbe ändern',
    sync: 'Sync', disconnect: 'Trennen',

    // Calendar / date
    months: ['Januar','Februar','März','April','Mai','Juni','Juli','August','September','Oktober','November','Dezember'],
    months_short: ['Jan','Feb','Mär','Apr','Mai','Jun','Jul','Aug','Sep','Okt','Nov','Dez'],
    days_long: ['Sonntag','Montag','Dienstag','Mittwoch','Donnerstag','Freitag','Samstag'],
    dow_monday: ['Mo','Di','Mi','Do','Fr','Sa','So'],
    dow_sunday: ['So','Mo','Di','Mi','Do','Fr','Sa'],
    dow_index: ['So','Mo','Di','Mi','Do','Fr','Sa'],
    week_abbr: 'KW',
    allday: 'ganztägig', allday_cap: 'Ganztägig',
    no_events: 'Keine Termine im angezeigten Zeitraum',
    more_events: '+{n} weitere',

    // Color picker
    color_select: 'Auswählen',

    // Locale for time formatting
    locale: 'de',
  },

  en: {
    // Common
    save: 'Save', cancel: 'Cancel', close: 'Close',
    create: 'Create', delete: 'Delete', edit: 'Edit',
    name: 'Name', username: 'Username', password: 'Password',
    email: 'Email', color: 'Color', color_pick: 'Choose color',
    loading: 'Loading…', connecting: 'Connecting…',
    unknown_error: 'Unknown error',

    // Setup
    setup_title: 'Initial Setup',
    setup_subtitle: 'Create the administrator account',
    setup_email: 'Email (optional)',
    setup_pw_confirm: 'Confirm password',
    setup_submit: 'Create admin account',
    setup_pw_mismatch: 'Passwords do not match',
    setup_pw_short: 'Password must be at least 6 characters',

    // Login
    login_tagline: 'the minimalist calendar frontend',
    login_submit: 'Sign in',
    login_2fa_ph: '6-digit code',

    // Topbar
    btn_today: 'Today',
    view_month: 'Month', view_week: 'Week', view_day: 'Day', view_agenda: 'Events',

    // Sidebar
    btn_create: 'Create',
    my_calendars: 'My Calendars',
    add_calendar: 'Add calendar',
    cal_local: 'Local calendar', cal_caldav: 'CalDAV account',
    cal_ical: 'Subscribe to iCal URL', cal_google: 'Google Calendar',

    // Event modal
    event_create_title: 'Create event', event_edit_title: 'Edit event',
    event_title_ph: 'Add title', event_allday: 'All day',
    event_start: 'Start', event_end: 'End', event_calendar: 'Calendar',
    event_location: 'Location', event_location_ph: 'Add location',
    event_description: 'Description', event_description_ph: 'Add description',

    // CalDAV modal
    caldav_add_title: 'Add CalDAV account',
    caldav_display_name: 'Display name', caldav_display_name_ph: 'e.g. My Nextcloud',
    caldav_url: 'CalDAV URL', caldav_connect: 'Connect',

    // Local calendar modal
    localcal_create_title: 'Create local calendar',
    localcal_name_ph: 'e.g. Personal',

    // iCal modal
    ical_title: 'Subscribe to iCal URL', ical_name_ph: 'e.g. Holidays',
    ical_url_label: 'iCal URL', ical_refresh: 'Refresh interval',
    ical_15min: 'Every 15 minutes', ical_30min: 'Every 30 minutes',
    ical_hourly: 'Every hour', ical_6h: 'Every 6 hours', ical_daily: 'Daily',
    ical_subscribe: 'Subscribe',

    // Settings
    settings_title: 'Settings',
    settings_nav_appearance: 'Appearance',
    settings_nav_google: 'Google Accounts',
    settings_nav_users: 'User Management',
    settings_colors: 'Colors',
    settings_primary_color: 'Primary color', settings_accent_color: 'Accent color',
    settings_today_color: 'Today highlight color',
    settings_text_contrast: 'Text contrast',
    settings_text_contrast_desc: 'Brightness of labels and text',
    contrast_dark: 'Dark', contrast_medium: 'Medium',
    contrast_light: 'Light', contrast_max: 'Maximum',
    settings_line_contrast: 'Line contrast',
    settings_line_contrast_desc: 'Visibility of borders and dividers',
    line_barely: 'Barely', line_subtle: 'Subtle',
    line_normal: 'Normal', line_strong: 'Strong',
    settings_calendar_view: 'Calendar view',
    settings_default_view: 'Default view',
    settings_week_start: 'First day of week',
    week_start_monday: 'Monday', week_start_sunday: 'Sunday',
    settings_dim_past: 'Dim past events',
    settings_hour_height: 'Hour height (week & day view)',
    settings_hour_height_desc: 'How much space one hour takes in the time grid',
    hour_compact: 'Compact', hour_normal: 'Normal',
    hour_comfort: 'Comfort', hour_large: 'Large',
    settings_language: 'Language',
    settings_hidden_cals: 'Hidden calendars',
    settings_no_hidden_cals: 'No hidden calendars',
    settings_no_google: 'No Google accounts connected',

    // User management
    users_add: 'Add user', users_is_admin: 'Administrator',

    // Profile
    profile_title: 'Profile', profile_upload: 'Upload image',
    profile_remove_avatar: 'Remove', profile_account: 'Account',
    profile_email_ph: 'No email set',
    profile_change_pw: 'Change password',
    profile_pw_current: 'Current password', profile_pw_new: 'New password',
    profile_pw_confirm: 'Confirm new password',
    profile_2fa: 'Two-Factor Authentication',
    profile_2fa_disabled_text: '2FA is disabled. Protect your account with an authenticator.',
    profile_2fa_setup: 'Set up 2FA',
    profile_2fa_scan: 'Scan the QR code with your authenticator app (e.g. Bitwarden, Google Authenticator).',
    profile_2fa_manual: 'Or enter this key manually',
    profile_2fa_copy: 'Copy', profile_2fa_code_label: 'Enter verification code',
    profile_2fa_ph: '6-digit code', profile_2fa_activate: 'Activate',
    profile_2fa_enabled_text: '2FA is enabled.',
    profile_2fa_pw_disable: 'Password to disable',
    profile_2fa_disable: 'Disable 2FA',
    profile_my_calendars: 'My Calendars',

    // Avatar crop
    crop_title: 'Crop image', crop_submit: 'Crop & Upload',

    // Impressum
    impressum_title: 'Legal Notice',
    impressum_desc: 'Software & Web Development',
    impressum_about: 'This software was developed and provided by Scarriffleservices with the utmost care. All rights reserved\u00a0© 2026 Scarriffleservices.',
    impressum_data_title: 'Data Storage',
    impressum_data_text: 'All application data is stored and processed exclusively in Switzerland. When using the Google Calendar integration, data is retrieved via the Google API, which Google processes on their infrastructure outside Switzerland. Google\'s privacy policy applies to this data.',
    impressum_disclaimer_title: 'Disclaimer',
    impressum_disclaimer_text: 'Despite careful preparation, no liability is assumed for the accuracy, completeness or timeliness of the content provided. Use is at your own risk.',
    impressum_contact: 'Contact',

    // Toast / confirms
    error_load_events: 'Error loading events',
    error_no_calendars: 'No calendars',
    confirm_delete_local_cal: 'Really delete local calendar?',
    confirm_remove_ical: 'Really remove subscription?',
    google_not_configured: 'Google OAuth is not configured (admin must set GOOGLE_CLIENT_ID/SECRET)',
    error_enter_title: 'Please enter a title',
    error_enter_date: 'Please enter a date',
    error_enter_start: 'Please enter a start time',
    event_updated: 'Event updated', event_created: 'Event created',
    confirm_delete_event: 'Really delete "{title}"?',
    event_deleted: 'Event deleted',
    error_fill_all: 'Please fill in all fields',
    account_added: 'Account "{name}" added',
    error_enter_name: 'Please enter a name',
    calendar_created: 'Calendar "{name}" created',
    error_name_url: 'Please enter a name and URL',
    ical_subscribed: '"{name}" subscribed',
    google_synced: 'Calendar synced',
    confirm_google_disconnect: 'Really disconnect Google account?',
    google_disconnected: 'Google account disconnected',
    error_username_password: 'Username and password required',
    user_created: 'User "{name}" created',
    settings_saved: 'Settings saved',
    no_caldav: 'No CalDAV accounts connected.',
    profile_saved: 'Profile saved',
    avatar_removed: 'Profile picture removed',
    avatar_uploaded: 'Profile picture uploaded',
    error_pw_mismatch: 'Passwords do not match',
    error_pw_length: 'At least 6 characters required',
    password_changed: 'Password changed',
    key_copied: 'Key copied',
    error_enter_6digit: 'Please enter a 6-digit code',
    totp_enabled: '2FA enabled', totp_disabled: '2FA disabled',
    error_enter_password: 'Please enter your password',
    confirm_delete_user: 'Delete user?',
    show_cal: 'Show', hide_cal: 'Hide',
    remove_cal: 'Remove calendar', remove_ical_sub: 'Remove subscription',
    change_color: 'Change color',
    sync: 'Sync', disconnect: 'Disconnect',

    // Calendar / date
    months: ['January','February','March','April','May','June','July','August','September','October','November','December'],
    months_short: ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'],
    days_long: ['Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday'],
    dow_monday: ['Mon','Tue','Wed','Thu','Fri','Sat','Sun'],
    dow_sunday: ['Sun','Mon','Tue','Wed','Thu','Fri','Sat'],
    dow_index: ['Sun','Mon','Tue','Wed','Thu','Fri','Sat'],
    week_abbr: 'CW',
    allday: 'all day', allday_cap: 'All day',
    no_events: 'No events in the displayed period',
    more_events: '+{n} more',

    // Color picker
    color_select: 'Select',

    // Locale for time formatting
    locale: 'en',
  },
};

let currentLang = (() => {
  try { const l = localStorage.getItem('lang'); return (l && translations[l]) ? l : 'de'; } catch (_) { return 'de'; }
})();

export function getLang() { return currentLang; }

export function setLang(lang) {
  currentLang = (lang && translations[lang]) ? lang : 'de';
  document.documentElement.lang = currentLang;
  try { localStorage.setItem('lang', currentLang); } catch (_) {}
  applyLang();
}

export function t(key, vars = {}) {
  const dict = translations[currentLang] ?? translations.de;
  const val = dict[key] ?? translations.de[key] ?? key;
  if (typeof val !== 'string') return val;
  return val.replace(/\{(\w+)\}/g, (_, k) => vars[k] ?? '');
}

export function applyLang() {
  document.querySelectorAll('[data-i18n]').forEach(el => {
    const v = t(el.dataset.i18n);
    if (typeof v === 'string') el.textContent = v;
  });
  document.querySelectorAll('[data-i18n-ph]').forEach(el => {
    el.placeholder = t(el.dataset.i18nPh);
  });
  document.querySelectorAll('[data-i18n-title]').forEach(el => {
    el.title = t(el.dataset.i18nTitle);
  });
}