<?php

declare(strict_types=1);

require __DIR__.'/../booking/backend.php';

session_name('sufw_booking_admin');
session_start();
$csrf = $_SESSION['csrf'] ??= bin2hex(random_bytes(32));
$database = bookingDatabase();
$project = (string) ($_GET['project'] ?? $_POST['project'] ?? 'perspektivwerk');
if (!bookingProjectIsValid($project)) $project = 'perspektivwerk';
$view = (string) ($_GET['view'] ?? 'events');
if (!in_array($view, ['events', 'registrations', 'export', 'export-data'], true)) $view = 'events';

function h(mixed $value): string { return htmlspecialchars((string) $value, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8'); }
function isQuarterHourDateTime(string $value): bool {
    $timestamp = strtotime($value);
    return $timestamp !== false && date('s', $timestamp) === '00' && ((int) date('i', $timestamp) % 15) === 0;
}
function adminBack(string $project, string $view, string $notice): never {
    header('Location: ?project='.rawurlencode($project).'&view='.rawurlencode($view).'&notice='.rawurlencode($notice));
    exit;
}

if ($view === 'export-data') {
    $from = (string) ($_GET['from'] ?? '');
    $to = (string) ($_GET['to'] ?? '');
    $exportProject = (string) ($_GET['filterProject'] ?? 'all');
    if (!in_array($exportProject, ['all', 'perspektivwerk', 'produktionsschule'], true)) $exportProject = 'all';
    header('Content-Type: application/json; charset=utf-8');
    if (!preg_match('/^\\d{4}-\\d{2}-\\d{2}$/', $from) || !preg_match('/^\\d{4}-\\d{2}-\\d{2}$/', $to) || strtotime($from) === false || strtotime($to) === false || strtotime($from) > strtotime($to)) {
        echo json_encode(['error' => 'Bitte wählen Sie einen gültigen Zeitraum.'], JSON_UNESCAPED_UNICODE);
        exit;
    }
    $sql = "SELECT e.title, DATE(e.starts_at) AS event_day, r.name FROM sufw_booking_registrations r JOIN sufw_booking_events e ON e.id = r.event_id WHERE r.status = 'confirmed' AND e.starts_at BETWEEN :fromDate AND :toDate";
    $parameters = ['fromDate' => $from.' 00:00:00', 'toDate' => $to.' 23:59:59'];
    if ($exportProject !== 'all') { $sql .= ' AND e.project = :exportProject'; $parameters['exportProject'] = $exportProject; }
    $statement = $database->prepare($sql.' ORDER BY e.starts_at, r.name');
    $statement->execute($parameters);
    echo json_encode(['registrations' => $statement->fetchAll()], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
    exit;
}

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    if (!hash_equals($csrf, (string) ($_POST['csrf'] ?? ''))) { http_response_code(403); exit('Ungültige Sitzung.'); }
    $action = (string) ($_POST['action'] ?? '');
    if ($action === 'save_event') {
        $id = (string) ($_POST['id'] ?? '') ?: bookingUuid();
        $title = trim((string) ($_POST['title'] ?? ''));
        $startsAt = str_replace('T', ' ', (string) ($_POST['starts_at'] ?? ''));
        $endsAt = str_replace('T', ' ', (string) ($_POST['ends_at'] ?? ''));
        $capacity = (int) ($_POST['capacity'] ?? 0);
        $format = (string) ($_POST['format'] ?? 'vor_ort');
        $contactName = trim((string) ($_POST['contact_name'] ?? ''));
        $contactEmail = trim((string) ($_POST['contact_email'] ?? ''));
        $contactPhone = trim((string) ($_POST['contact_phone'] ?? ''));
        if ($title === '' || $capacity < 1 || $capacity > 100 || !in_array($format, ['vor_ort', 'telefonisch'], true) || $contactName === '' || $contactPhone === '' || !filter_var($contactEmail, FILTER_VALIDATE_EMAIL) || !isQuarterHourDateTime($startsAt) || !isQuarterHourDateTime($endsAt) || strtotime($endsAt) <= strtotime($startsAt)) adminBack($project, 'events', 'Bitte prüfen Sie die Termindaten. Uhrzeiten sind nur im 15-Minuten-Raster zulässig.');
        $save = $database->prepare("INSERT INTO sufw_booking_events (id, project, title, starts_at, ends_at, capacity, format, introduction_required, contact_name, contact_email, contact_phone) VALUES (:id, :project, :title, :startsAt, :endsAt, :capacity, :format, :introductionRequired, :contactName, :contactEmail, :contactPhone) ON DUPLICATE KEY UPDATE title = VALUES(title), starts_at = VALUES(starts_at), ends_at = VALUES(ends_at), capacity = VALUES(capacity), format = VALUES(format), introduction_required = VALUES(introduction_required), contact_name = VALUES(contact_name), contact_email = VALUES(contact_email), contact_phone = VALUES(contact_phone)");
        $save->execute(['id' => $id, 'project' => $project, 'title' => $title, 'startsAt' => $startsAt, 'endsAt' => $endsAt, 'capacity' => $capacity, 'format' => $format, 'introductionRequired' => isset($_POST['introduction_required']) ? 1 : 0, 'contactName' => $contactName, 'contactEmail' => $contactEmail, 'contactPhone' => $contactPhone]);
        adminBack($project, 'events', 'Termin gespeichert.');
    }
    if ($action === 'toggle_event') {
        $database->prepare('UPDATE sufw_booking_events SET is_active = 1 - is_active WHERE id = :id AND project = :project')->execute(['id' => $_POST['id'] ?? '', 'project' => $project]);
        adminBack($project, 'events', 'Terminstatus geändert.');
    }
    if ($action === 'remove_registration') {
        $database->prepare("UPDATE sufw_booking_registrations SET status = 'removed', removed_at = UTC_TIMESTAMP() WHERE id = :id AND status IN ('pending_confirmation', 'confirmed')")->execute(['id' => $_POST['id'] ?? '']);
        adminBack($project, 'registrations', 'Teilnahme entfernt; die Kapazität ist wieder frei.');
    }
    if ($action === 'run_jobs') {
        $result = bookingRunJobs($database);
        adminBack($project, $view, "Jobs ausgeführt: {$result['expired']} abgelaufen, {$result['remindersConsidered']} Erinnerungen geprüft.");
    }
}

$titles = $database->prepare('SELECT DISTINCT title FROM sufw_booking_events WHERE project = :project ORDER BY title');
$titles->execute(['project' => $project]);
$titles = $titles->fetchAll(PDO::FETCH_COLUMN);
$contacts = $database->prepare('SELECT DISTINCT contact_name, contact_email, contact_phone FROM sufw_booking_events WHERE project = :project ORDER BY contact_name, contact_email');
$contacts->execute(['project' => $project]);
$contactByName = [];
$contactByEmail = [];
foreach ($contacts as $contact) { $contactByName[$contact['contact_name']] ??= ['email' => $contact['contact_email'], 'phone' => $contact['contact_phone']]; $contactByEmail[$contact['contact_email']] ??= ['name' => $contact['contact_name'], 'phone' => $contact['contact_phone']]; }
$settings = $database->prepare('SELECT feed_token FROM sufw_booking_project_settings WHERE project = :project');
$settings->execute(['project' => $project]);
$feedToken = (string) $settings->fetchColumn();
$notice = (string) ($_GET['notice'] ?? '');

$events = [];
$edit = null;
if ($view === 'events') {
    $statement = $database->prepare("SELECT e.*, COUNT(CASE WHEN r.status = 'confirmed' THEN 1 END) AS confirmed_count FROM sufw_booking_events e LEFT JOIN sufw_booking_registrations r ON r.event_id = e.id WHERE e.project = :project GROUP BY e.id ORDER BY e.starts_at");
    $statement->execute(['project' => $project]);
    $events = $statement->fetchAll();
    foreach ($events as $event) if ($event['id'] === ($_GET['edit'] ?? '')) $edit = $event;
}
$registrations = [];
if ($view === 'registrations') {
    $statement = $database->prepare("SELECT r.*, e.title, e.starts_at FROM sufw_booking_registrations r JOIN sufw_booking_events e ON e.id = r.event_id WHERE e.project = :project ORDER BY r.created_at DESC LIMIT 200");
    $statement->execute(['project' => $project]);
    $registrations = $statement->fetchAll();
}
$outbox = [];
if ($view === 'events') {
    $statement = $database->prepare("SELECT o.*, r.name FROM sufw_booking_outbox o JOIN sufw_booking_registrations r ON r.id = o.registration_id JOIN sufw_booking_events e ON e.id = r.event_id WHERE e.project = :project ORDER BY o.created_at DESC LIMIT 20");
    $statement->execute(['project' => $project]);
    $outbox = $statement->fetchAll();
}
$defaultFrom = date('Y-m-01');
$defaultTo = date('Y-m-t');
?>
<!doctype html>
<html lang="de"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"><title>Terminbuchung · Testverwaltung</title>
<style>
:root{--green:#08752a;--bg:#f3f6f3;--line:#cad2cb;--ink:#202020}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.45 Arial,sans-serif}.shell{max-width:1180px;margin:auto;padding:1.5rem}header{display:flex;gap:1rem;justify-content:space-between;align-items:start;flex-wrap:wrap}h1,h2{color:var(--green)}h1{margin:0}.warning,.notice{padding:.75rem 1rem;border-left:4px solid #a36a00;background:#fff8e7}.notice{border-color:var(--green);background:#eaf6ed}.tabs{display:flex;flex-wrap:wrap;gap:.5rem;margin:1rem 0}.tabs a,.button,button{display:inline-block;padding:.65rem .85rem;border:1px solid var(--green);background:#fff;color:var(--green);font:inherit;text-decoration:none;cursor:pointer}.tabs a.active,button.primary{background:var(--green);color:#fff}.grid{display:grid;gap:1.25rem;grid-template-columns:1.25fr .75fr;margin-top:1.25rem}.card{background:#fff;border:1px solid var(--line);padding:1rem;overflow:auto}table{border-collapse:collapse;width:100%;min-width:680px}th,td{padding:.6rem;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}small{color:#555}.status{font-weight:bold}.confirmed{color:#08752a}.pending_confirmation{color:#a36a00}.removed,.expired{color:#8a1515}form.inline{display:inline}label{display:grid;gap:.25rem;font-weight:bold}input,select{font:inherit;padding:.55rem;border:1px solid #68736a;width:100%}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.8rem}.wide{grid-column:1/-1}pre{white-space:pre-wrap;max-width:42rem;font:13px/1.35 ui-monospace,monospace}.date-time-trigger{width:100%;min-height:2.75rem;text-align:left}.picker-dialog{width:min(25rem,calc(100% - 2rem));border:0;padding:0;box-shadow:0 .75rem 2rem #0006}.picker-dialog::backdrop{background:#0008}.picker-content{padding:1rem}.picker-head,.picker-actions{display:flex;justify-content:space-between;gap:.5rem;align-items:center}.picker-month{font-weight:bold;text-transform:capitalize}.picker-week,.picker-days{display:grid;grid-template-columns:repeat(7,1fr);gap:.25rem;text-align:center}.picker-week{margin:1rem 0 .25rem;font-size:.8rem;font-weight:bold}.picker-days button{min-height:2.4rem;padding:.25rem;border:1px solid transparent}.picker-days button.selected{background:var(--green);color:#fff}.picker-days button:disabled{visibility:hidden}.picker-time{display:grid;grid-template-columns:1fr 1fr;gap:.75rem;margin:1rem 0}.export-results{margin-top:1rem}.export-results li{margin:.5rem 0;white-space:nowrap;overflow-x:auto}@media(max-width:760px){.grid,.form-grid{grid-template-columns:1fr}.shell{padding:1rem}}
select[data-dropdown-indicator]{appearance:none;padding-right:2.5rem;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%2308752a' d='m3 6 5 5 5-5z'/%3E%3C/svg%3E") no-repeat right .75rem center/1rem}</style></head><body><main class="shell">
<header><div><h1>Terminbuchung · Testverwaltung</h1></div><form method="post"><input type="hidden" name="csrf" value="<?=h($csrf)?>"><input type="hidden" name="project" value="<?=h($project)?>"><input type="hidden" name="action" value="run_jobs"><button>Jobs ausführen</button></form></header>
<?php if ($notice !== ''): ?><p class="notice"><?=h($notice)?></p><?php endif; ?>
<nav class="tabs"><a class="<?= $view === 'events' && $project === 'perspektivwerk' ? 'active' : '' ?>" href="?project=perspektivwerk&view=events">PerspektivWerk</a><a class="<?= $view === 'events' && $project === 'produktionsschule' ? 'active' : '' ?>" href="?project=produktionsschule&view=events">Produktionsschule</a><a class="<?= $view === 'registrations' ? 'active' : '' ?>" href="?project=<?=h($project)?>&view=registrations">Teilnahmen</a><a class="<?= $view === 'export' ? 'active' : '' ?>" href="?project=<?=h($project)?>&view=export">Export</a></nav>

<?php if ($view === 'events'): ?>
<section class="grid"><article class="card"><h2><?= $edit ? 'Termin bearbeiten' : 'Termin anlegen' ?></h2><form method="post"><input type="hidden" name="csrf" value="<?=h($csrf)?>"><input type="hidden" name="action" value="save_event"><input type="hidden" name="project" value="<?=h($project)?>"><input type="hidden" name="id" value="<?=h($edit['id'] ?? '')?>"><div class="form-grid">
<label class="wide">Terminart<select name="title" required data-dropdown-indicator><option value="">Terminart wählen …</option><?php foreach ($titles as $title): ?><option value="<?=h($title)?>" <?=($edit['title'] ?? '') === $title ? 'selected' : ''?>><?=h($title)?></option><?php endforeach; ?></select></label>
<label>Beginn<input type="hidden" name="starts_at" value="<?=h($edit['starts_at'] ?? '')?>"><button type="button" class="date-time-trigger" data-datetime-picker data-target="starts_at">Datum &amp; Uhrzeit wählen</button></label><label>Ende<input type="hidden" name="ends_at" value="<?=h($edit['ends_at'] ?? '')?>"><button type="button" class="date-time-trigger" data-datetime-picker data-target="ends_at">Datum &amp; Uhrzeit wählen</button></label>
<label>Kapazität (1–100)<input type="number" min="1" max="100" name="capacity" required value="<?=h($edit['capacity'] ?? 1)?>"></label><label>Format<select name="format"><option value="vor_ort" <?=($edit['format'] ?? '') === 'vor_ort' ? 'selected' : ''?>>Vor Ort</option><option value="telefonisch" <?=($edit['format'] ?? '') === 'telefonisch' ? 'selected' : ''?>>Telefonisch</option></select></label>
<label>Ansprechperson<select id="contact_name" name="contact_name" required data-dropdown-indicator><option value="">Ansprechperson wählen …</option><?php foreach ($contactByName as $name => $contact): ?><option value="<?=h($name)?>" <?=($edit['contact_name'] ?? '') === $name ? 'selected' : ''?>><?=h($name)?></option><?php endforeach; ?></select></label><label>Kontakt-E-Mail<select id="contact_email" name="contact_email" required data-dropdown-indicator><option value="">Kontakt-E-Mail wählen …</option><?php foreach ($contactByEmail as $email => $contact): ?><option value="<?=h($email)?>" <?=($edit['contact_email'] ?? '') === $email ? 'selected' : ''?>><?=h($email)?></option><?php endforeach; ?></select></label>
<label>Telefon Ansprechperson<input id="contact_phone" name="contact_phone" type="tel" required readonly value="<?=h($edit['contact_phone'] ?? '')?>"></label>
<label class="wide"><span><input type="checkbox" name="introduction_required" <?=!empty($edit['introduction_required']) ? 'checked' : ''?>> Einführungsveranstaltung erforderlich (PS-Probearbeiten)</span></label></div><p><button class="primary">Termin speichern</button><?php if ($edit): ?> <a class="button" href="?project=<?=h($project)?>&view=events">Abbrechen</a><?php endif; ?></p></form></article>
<aside class="card"><h2>Kalenderfeed</h2><p>Nur bestätigte Termine, ohne Teilnehmendendaten:</p><p><a href="<?=h(bookingBaseUrl().'/booking/ical.php?project='.$project.'&token='.$feedToken)?>">ICS-Feed öffnen</a></p></aside></section>
<section class="card"><h2>Termine</h2><table><thead><tr><th>Termin</th><th>Zeit</th><th>Kapazität</th><th>Status</th><th></th></tr></thead><tbody><?php foreach ($events as $event): ?><tr><td><strong><?=h($event['title'])?></strong><br><small><?=h($event['format'])?><?=!empty($event['introduction_required']) ? ' · Einführung erforderlich' : ''?></small></td><td><?=h($event['starts_at'])?><br>bis <?=h($event['ends_at'])?></td><td><?=h($event['confirmed_count'])?> / <?=h($event['capacity'])?> bestätigt</td><td><?= $event['is_active'] ? 'Aktiv' : 'Inaktiv' ?></td><td><a class="button" href="?project=<?=h($project)?>&view=events&edit=<?=h($event['id'])?>">Bearbeiten</a> <form class="inline" method="post"><input type="hidden" name="csrf" value="<?=h($csrf)?>"><input type="hidden" name="project" value="<?=h($project)?>"><input type="hidden" name="action" value="toggle_event"><input type="hidden" name="id" value="<?=h($event['id'])?>"><button><?= $event['is_active'] ? 'Deaktivieren' : 'Aktivieren' ?></button></form></td></tr><?php endforeach; ?></tbody></table></section>
<section class="card"><h2>Lokaler Mailausgang</h2><?php foreach ($outbox as $mail): ?><article><strong><?=h($mail['kind'])?></strong> · <?=h($mail['recipient_email'])?><br><small><?=h($mail['subject'])?></small><pre><?=h($mail['body'])?></pre></article><?php endforeach; ?></section>
<?php elseif ($view === 'registrations'): ?>
<section class="card"><h2>Teilnahmen · <?=h(bookingProjectTitle($project))?></h2><table><thead><tr><th>Person</th><th>Termin</th><th>Status</th><th></th></tr></thead><tbody><?php foreach ($registrations as $registration): ?><tr><td><?=h($registration['name'])?><br><small><?=h($registration['email'])?><br><?=h($registration['phone'])?></small></td><td><?=h($registration['title'])?><br><small><?=h($registration['starts_at'])?></small></td><td class="status <?=h($registration['status'])?>"><?=h($registration['status'])?></td><td><?php if (in_array($registration['status'], ['pending_confirmation','confirmed'], true)): ?><form method="post"><input type="hidden" name="csrf" value="<?=h($csrf)?>"><input type="hidden" name="project" value="<?=h($project)?>"><input type="hidden" name="action" value="remove_registration"><input type="hidden" name="id" value="<?=h($registration['id'])?>"><button>Entfernen</button></form><?php endif; ?></td></tr><?php endforeach; ?></tbody></table></section>
<?php elseif ($view === 'export'): ?>
<section class="card"><h2>Bestätigte Teilnahmen anzeigen</h2><p>Der Zeitraum umfasst jeweils vollständige Kalendertage (00:00 bis 23:59 Uhr) und aktualisiert die Liste unmittelbar.</p><div class="form-grid"><label>Projekt<select id="export-project" data-dropdown-indicator><option value="all">PerspektivWerk und Produktionsschule</option><option value="perspektivwerk">Nur PerspektivWerk</option><option value="produktionsschule">Nur Produktionsschule</option></select></label>
<label></label>
<label>Von<input type="hidden" id="export-from" value="<?=h($defaultFrom)?>"><button type="button" class="date-time-trigger" data-date-picker data-target="export-from">Datum wählen</button></label>
<label>Bis<input type="hidden" id="export-to" value="<?=h($defaultTo)?>"><button type="button" class="date-time-trigger" data-date-picker data-target="export-to">Datum wählen</button></label>
</div><div id="export-results" class="export-results" role="status" aria-live="polite">Lade Teilnahmen …</div></section>
<?php endif; ?>
</main>
<dialog class="picker-dialog" id="date-time-dialog" aria-labelledby="date-time-title"><div class="picker-content"><div class="picker-head"><button type="button" data-picker-prev aria-label="Vorheriger Monat">‹</button><strong class="picker-month" id="date-time-title"></strong><button type="button" data-picker-next aria-label="Nächster Monat">›</button></div><div class="picker-week" aria-hidden="true"><span>Mo</span><span>Di</span><span>Mi</span><span>Do</span><span>Fr</span><span>Sa</span><span>So</span></div><div class="picker-days" data-picker-days></div><div class="picker-time" data-picker-time-controls><label>Stunde<select data-picker-hour></select></label><label>Viertelstunde<select data-picker-quarter></select></label></div><div class="picker-actions"><button type="button" data-picker-close>Schließen</button><button type="button" class="primary" data-picker-apply>Übernehmen</button></div></div></dialog>
<script>
const contactByName = <?=json_encode($contactByName, JSON_HEX_TAG | JSON_HEX_AMP | JSON_HEX_APOS | JSON_HEX_QUOT)?>;
const contactByEmail = <?=json_encode($contactByEmail, JSON_HEX_TAG | JSON_HEX_AMP | JSON_HEX_APOS | JSON_HEX_QUOT)?>;
const contactName = document.querySelector('#contact_name'), contactEmail = document.querySelector('#contact_email'), contactPhone = document.querySelector('#contact_phone');
contactName?.addEventListener('change', () => { const contact=contactByName[contactName.value]; if (contact) { contactEmail.value=contact.email; contactPhone.value=contact.phone; } });
contactEmail?.addEventListener('change', () => { const contact=contactByEmail[contactEmail.value]; if (contact) { contactName.value=contact.name; contactPhone.value=contact.phone; } });
const dialog = document.querySelector('#date-time-dialog'), days = dialog.querySelector('[data-picker-days]'), monthLabel = dialog.querySelector('.picker-month'), timeControls = dialog.querySelector('[data-picker-time-controls]'), hourSelect = dialog.querySelector('[data-picker-hour]'), quarterSelect = dialog.querySelector('[data-picker-quarter]');
const hours = Array.from({length:24}, (_,hour) => String(hour).padStart(2,'0'));
hourSelect.innerHTML = hours.map(hour => '<option value="' + hour + '">' + hour + ' Uhr</option>').join('');
quarterSelect.innerHTML = ['00','15','30','45'].map(minute => '<option value="' + minute + '">' + minute + ' Min.</option>').join('');
let pickerTarget, pickerDate, pickerMonth, pickerMode;
const asDate = value => { const parts = String(value || '').match(/^(\\d{4})-(\\d{2})-(\\d{2})(?:[ T](\\d{2}):(\\d{2}))?/); return parts ? new Date(Number(parts[1]), Number(parts[2])-1, Number(parts[3]), Number(parts[4] || 0), Number(parts[5] || 0)) : new Date(); };
const formatDateValue = date => String(date.getFullYear())+'-'+String(date.getMonth()+1).padStart(2,'0')+'-'+String(date.getDate()).padStart(2,'0');
const formatValue = date => formatDateValue(date)+' '+String(date.getHours()).padStart(2,'0')+':'+String(date.getMinutes()).padStart(2,'0')+':00';
const formatLabel = (value, includeTime) => value ? new Intl.DateTimeFormat('de-DE', includeTime ? {dateStyle:'medium',timeStyle:'short'} : {dateStyle:'medium'}).format(asDate(value)) : (includeTime ? 'Datum & Uhrzeit wählen' : 'Datum wählen');
const getTarget = name => document.querySelector('[name="'+name+'"],#'+name);
const syncPickerLabels = () => document.querySelectorAll('[data-datetime-picker],[data-date-picker]').forEach(button => { const input = getTarget(button.dataset.target); button.textContent = formatLabel(input?.value, button.hasAttribute('data-datetime-picker')); });
function renderPicker() {
  monthLabel.textContent = new Intl.DateTimeFormat('de-DE',{month:'long',year:'numeric'}).format(pickerMonth);
  const first = new Date(pickerMonth.getFullYear(),pickerMonth.getMonth(),1), offset = (first.getDay()+6)%7, last = new Date(pickerMonth.getFullYear(),pickerMonth.getMonth()+1,0).getDate();
  days.innerHTML = Array.from({length:offset+last}, (_,index) => { if(index<offset) return '<button type="button" disabled></button>'; const day=index-offset+1, selected=pickerDate.getFullYear()===pickerMonth.getFullYear()&&pickerDate.getMonth()===pickerMonth.getMonth()&&pickerDate.getDate()===day; return '<button type="button" data-picker-day="'+day+'" class="'+(selected?'selected':'')+'" aria-pressed="'+selected+'">'+day+'</button>'; }).join('');
  days.querySelectorAll('[data-picker-day]').forEach(button => button.addEventListener('click', () => { pickerDate = new Date(pickerMonth.getFullYear(),pickerMonth.getMonth(),Number(button.dataset.pickerDay),pickerDate.getHours(),pickerDate.getMinutes()); renderPicker(); }));
}
document.querySelectorAll('[data-datetime-picker],[data-date-picker]').forEach(button => button.addEventListener('click', () => { pickerTarget=getTarget(button.dataset.target); pickerMode=button.hasAttribute('data-date-picker') ? 'date' : 'datetime'; pickerDate=asDate(pickerTarget.value); pickerMonth=new Date(pickerDate.getFullYear(),pickerDate.getMonth(),1); timeControls.hidden=pickerMode === 'date'; hourSelect.value=String(pickerDate.getHours()).padStart(2,'0'); quarterSelect.value=String(Math.floor(pickerDate.getMinutes()/15)*15).padStart(2,'0'); renderPicker(); dialog.showModal(); }));
dialog.querySelector('[data-picker-prev]').addEventListener('click', () => { pickerMonth=new Date(pickerMonth.getFullYear(),pickerMonth.getMonth()-1,1); renderPicker(); });
dialog.querySelector('[data-picker-next]').addEventListener('click', () => { pickerMonth=new Date(pickerMonth.getFullYear(),pickerMonth.getMonth()+1,1); renderPicker(); });
dialog.querySelector('[data-picker-close]').addEventListener('click', () => dialog.close());
dialog.querySelector('[data-picker-apply]').addEventListener('click', () => { if (pickerMode === 'datetime') pickerDate.setHours(Number(hourSelect.value),Number(quarterSelect.value),0,0); pickerTarget.value=pickerMode === 'date' ? formatDateValue(pickerDate) : formatValue(pickerDate); syncPickerLabels(); pickerTarget.dispatchEvent(new Event('booking-datetime-change')); dialog.close(); });
syncPickerLabels();
const exportResults=document.querySelector('#export-results');
const escapeHtml = value => String(value).replace(/[&<>"']/g, character => ({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'}[character]));
async function updateExport() { if(!exportResults)return; const from=document.querySelector('#export-from').value,to=document.querySelector('#export-to').value,filterProject=document.querySelector('#export-project').value; exportResults.textContent='Lade Teilnahmen …'; const result=await fetch('?view=export-data&filterProject='+encodeURIComponent(filterProject)+'&from='+encodeURIComponent(from)+'&to='+encodeURIComponent(to)).then(response=>response.json()); if(result.error){exportResults.textContent=result.error;return;} exportResults.innerHTML=result.registrations.length?'<p>'+result.registrations.length+' bestätigte Teilnahme(n)</p><ul>'+result.registrations.map(item=>'<li><strong>'+escapeHtml(item.name)+'</strong> · '+escapeHtml(item.title)+' · '+escapeHtml(item.event_day)+'</li>').join('')+'</ul>':'<p>Für diesen Zeitraum liegen keine bestätigten Teilnahmen vor.</p>'; }
document.querySelectorAll('#export-from,#export-to').forEach(input=>input.addEventListener('booking-datetime-change',updateExport)); document.querySelector('#export-project')?.addEventListener('change', updateExport); updateExport();
</script></body></html>