<?php
require_once('include/headscript.php');
require_once('include/event_mailer.php');

/**
 * Invio del promemoria manuale a tutti gli iscritti confermati di un evento.
 */
if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
    header('Location: events.php');
    exit();
}

$pdo = DBHandlerSelect::getInstance()->getConnection();

$eventId     = (int) ($_POST['id'] ?? 0);
$message     = trim($_POST['message'] ?? '');
$meetingLink = trim($_POST['meeting_link'] ?? '');

if ($eventId <= 0) {
    header('Location: events.php');
    exit();
}

// Accetta solo link http/https come punto di ritrovo
if ($meetingLink !== '' && !preg_match('#^https?://#i', $meetingLink)) {
    $meetingLink = '';
}

try {
    $es = $pdo->prepare("SELECT * FROM events WHERE id = ?");
    $es->execute([$eventId]);
    $event = $es->fetch(PDO::FETCH_ASSOC);
    if (!$event) {
        header('Location: events.php?message=error');
        exit();
    }

    $ps = $pdo->prepare("SELECT * FROM event_bookings WHERE event_id = ? AND status = 'confirmed'");
    $ps->execute([$eventId]);
    $participants = $ps->fetchAll(PDO::FETCH_ASSOC);

    foreach ($participants as $p) {
        try {
            yse_mail_reminder($p, $event, $message, $meetingLink);
        } catch (Throwable $me) {
            error_log('[reminder send] ' . $me->getMessage());
        }
    }

    $pdo->prepare("UPDATE events SET reminder_sent_at = NOW() WHERE id = ?")->execute([$eventId]);

    header('Location: event_reminder.php?id=' . $eventId . '&message=sent');
    exit();
} catch (Throwable $ex) {
    error_log('[event_reminder_send] ' . $ex->getMessage());
    header('Location: event_reminder.php?id=' . $eventId . '&message=error');
    exit();
}