<?php
include('inc/check_login.php');
include('inc/db.php');
include('inc/helpers.php');

$logged_in_user_id = isset($_SESSION['user_id']) ? intval($_SESSION['user_id']) : 1;

// 🔹 Funktion: Prüft, ob Benutzer im Abwesenheitsmodus ist
function is_user_on_vacation($conn, $user_id, $meeting_date)
{
    $stmt = mysqli_prepare($conn, "
        SELECT 1 FROM vacations 
        WHERE user_id = ? 
        AND ? BETWEEN start_date AND end_date
        LIMIT 1
    ");
    if (!$stmt) return false;
    mysqli_stmt_bind_param($stmt, "is", $user_id, $meeting_date);
    mysqli_stmt_execute($stmt);
    $result = mysqli_stmt_get_result($stmt);
    $found = mysqli_fetch_assoc($result);
    mysqli_stmt_close($stmt);
    return $found !== null;
}

// 🔹 Funktion: Automatisch ablehnen, wenn im Urlaub (außer bei expliziter Zusage)
function auto_decline_if_on_vacation($conn, $meeting_id, $user_id, $meeting_date)
{
    if (!is_user_on_vacation($conn, $user_id, $meeting_date)) {
        return null;
    }

    $check_sql = "SELECT rsvp_status FROM meeting_teilnehmer WHERE meeting_id = ? AND user_id = ?";
    $check_stmt = mysqli_prepare($conn, $check_sql);
    mysqli_stmt_bind_param($check_stmt, "ii", $meeting_id, $user_id);
    mysqli_stmt_execute($check_stmt);
    $existing = mysqli_fetch_assoc(mysqli_stmt_get_result($check_stmt));
    mysqli_stmt_close($check_stmt);

    $current_status = $existing ? $existing['rsvp_status'] : null;

    // Wenn explizit "accepted" oder "maybe" gewählt wurde → NICHT überschreiben!
    if ($current_status === 'accepted' || $current_status === 'maybe') {
        return $current_status;
    }

    // Nur wenn Status "declined" oder NULL → auf "declined" setzen
    if ($existing) {
        $upd = mysqli_prepare($conn, "UPDATE meeting_teilnehmer SET rsvp_status = 'declined', attended = 0 WHERE meeting_id = ? AND user_id = ?");
        mysqli_stmt_bind_param($upd, "ii", $meeting_id, $user_id);
        mysqli_stmt_execute($upd);
        mysqli_stmt_close($upd);
    } else {
        $ins = mysqli_prepare($conn, "INSERT INTO meeting_teilnehmer (meeting_id, user_id, rsvp_status, attended) VALUES (?, ?, 'declined', 0)");
        mysqli_stmt_bind_param($ins, "ii", $meeting_id, $user_id);
        mysqli_stmt_execute($ins);
        mysqli_stmt_close($ins);
    }

    return 'declined';
}

// Funktion: aktueller, nicht abgeschlossener Termin
function get_current_meeting($conn)
{
    $sql = "SELECT id, meeting_date, color_id, reason
            FROM meetings 
            WHERE is_completed = 0
            ORDER BY meeting_date ASC 
            LIMIT 1";
    $result = mysqli_query($conn, $sql);
    return ($result && mysqli_num_rows($result) > 0) ? mysqli_fetch_assoc($result) : null;
}

$row = get_current_meeting($conn);

// --- TEILNAHME-LOGIK & TERMINVERSCHIEBUNG ---
if ($row) {
    $meeting_id = $row['id'];

    // Aktionen verarbeiten (Zusagen / Absagen / Vielleicht)
    if (isset($_GET['action']) && isset($_GET['meeting_id']) && $_GET['meeting_id'] == $meeting_id) {
        $action = $_GET['action'];
        $rsvp_status_value = null;
        $attended_value = 0;

        if ($action === 'accept') {
            $rsvp_status_value = 'accepted';
            $attended_value = 1;
        } elseif ($action === 'decline') {
            $rsvp_status_value = 'declined';
            $attended_value = 0;
        } elseif ($action === 'maybe') {
            $rsvp_status_value = 'maybe';
            $attended_value = 0;
        }

        if ($rsvp_status_value !== null) {
            $check_sql = "SELECT rsvp_status FROM meeting_teilnehmer WHERE meeting_id = ? AND user_id = ?";
            $check_stmt = mysqli_prepare($conn, $check_sql);
            $existing = null;
            if ($check_stmt) {
                mysqli_stmt_bind_param($check_stmt, "ii", $meeting_id, $logged_in_user_id);
                mysqli_stmt_execute($check_stmt);
                $existing = mysqli_fetch_assoc(mysqli_stmt_get_result($check_stmt));
                mysqli_stmt_close($check_stmt);
            }

            if ($existing) {
                $update_sql = "UPDATE meeting_teilnehmer SET rsvp_status = ?, attended = ? WHERE meeting_id = ? AND user_id = ?";
                $update_stmt = mysqli_prepare($conn, $update_sql);
                if ($update_stmt) {
                    mysqli_stmt_bind_param($update_stmt, "siii", $rsvp_status_value, $attended_value, $meeting_id, $logged_in_user_id);
                    mysqli_stmt_execute($update_stmt);
                    mysqli_stmt_close($update_stmt);
                }
            } else {
                $insert_sql = "INSERT INTO meeting_teilnehmer (meeting_id, user_id, attended, rsvp_status) VALUES (?, ?, ?, ?)";
                $insert_stmt = mysqli_prepare($conn, $insert_sql);
                if ($insert_stmt) {
                    mysqli_stmt_bind_param($insert_stmt, "iiis", $meeting_id, $logged_in_user_id, $attended_value, $rsvp_status_value);
                    mysqli_stmt_execute($insert_stmt);
                    mysqli_stmt_close($insert_stmt);
                }
            }
            header("Location: index.php");
            exit;
        }
    }

    // 🔥 Automatisch ablehnen, wenn im Abwesenheitsmodus
    $auto_declined = auto_decline_if_on_vacation($conn, $meeting_id, $logged_in_user_id, $row['meeting_date']);

    // Status abrufen
    $user_attendance_status = null;
    $user_status_sql = "SELECT rsvp_status FROM meeting_teilnehmer WHERE meeting_id = ? AND user_id = ?";
    $user_status_stmt = mysqli_prepare($conn, $user_status_sql);
    if ($user_status_stmt) {
        mysqli_stmt_bind_param($user_status_stmt, "ii", $meeting_id, $logged_in_user_id);
        mysqli_stmt_execute($user_status_stmt);
        $user_status_result = mysqli_stmt_get_result($user_status_stmt);
        $user_status_row = mysqli_fetch_assoc($user_status_result);
        if ($user_status_row) {
            $user_attendance_status = $user_status_row['rsvp_status'];
        }
        mysqli_stmt_close($user_status_stmt);
    }

    // Teilnehmerlisten laden
    $attendees_sql = "SELECT t.rsvp_status, u.username 
                      FROM meeting_teilnehmer AS t
                      LEFT JOIN users AS u ON t.user_id = u.id
                      WHERE t.meeting_id = ?";
    $attendees_stmt = mysqli_prepare($conn, $attendees_sql);
    $accepted_users = [];
    $declined_users = [];
    $maybe_users = [];
    $total_accepted = 0;
    $total_declined = 0;
    $total_maybe = 0;
    if ($attendees_stmt) {
        mysqli_stmt_bind_param($attendees_stmt, "i", $meeting_id);
        mysqli_stmt_execute($attendees_stmt);
        $attendees_result = mysqli_stmt_get_result($attendees_stmt);
        while ($row_user = mysqli_fetch_assoc($attendees_result)) {
            switch ($row_user['rsvp_status']) {
                case 'accepted':
                    $accepted_users[] = htmlspecialchars($row_user['username']);
                    $total_accepted++;
                    break;
                case 'declined':
                    $declined_users[] = htmlspecialchars($row_user['username']);
                    $total_declined++;
                    break;
                case 'maybe':
                    $maybe_users[] = htmlspecialchars($row_user['username']);
                    $total_maybe++;
                    break;
            }
        }
        mysqli_stmt_close($attendees_stmt);
    }

    // --- ZAHLENDE PERSON BESTIMMEN ---
    $next_payer_username = null;
    if ($total_accepted > 0) {
        $sql_next_payer = "
            SELECT 
                u.username,
                (SELECT COUNT(*) FROM meeting_teilnehmer WHERE user_id = u.id AND paid = 1) AS paid_count
            FROM meeting_teilnehmer mt
            JOIN users u ON mt.user_id = u.id
            WHERE mt.meeting_id = ? AND mt.rsvp_status = 'accepted'
            ORDER BY paid_count ASC
        ";
        $stmt_next_payer = mysqli_prepare($conn, $sql_next_payer);
        mysqli_stmt_bind_param($stmt_next_payer, "i", $meeting_id);
        mysqli_stmt_execute($stmt_next_payer);
        $result_next_payer = mysqli_stmt_get_result($stmt_next_payer);
        $payer_candidates = [];
        $min_paid_count = -1;
        while ($row_payer = mysqli_fetch_assoc($result_next_payer)) {
            if ($min_paid_count == -1 || $row_payer['paid_count'] < $min_paid_count) {
                $min_paid_count = $row_payer['paid_count'];
                $payer_candidates = [$row_payer['username']];
            } elseif ($row_payer['paid_count'] == $min_paid_count) {
                $payer_candidates[] = $row_payer['username'];
            }
        }
        mysqli_stmt_close($stmt_next_payer);
        if (!empty($payer_candidates)) {
            sort($payer_candidates);
            $next_payer_username = $payer_candidates[0];
        }
    }

    // --- TERMINVERSCHIEBUNG: Logik einbinden UND ausführen ---
    include('verschiebung.php');
    handle_reschedule_actions($conn, $meeting_id, $logged_in_user_id);
    $reschedule_data = load_reschedule_data($conn, $meeting_id, $logged_in_user_id);
    $active_proposals = $reschedule_data['active_proposals'];
    $user_votes = $reschedule_data['user_votes'];
    $yes_voters = $reschedule_data['yes_voters'];
    $no_voters = $reschedule_data['no_voters'];
}

include('inc/header.php');

$german_weekdays = [
    'Mon' => 'Mo.',
    'Tue' => 'Di.',
    'Wed' => 'Mi.',
    'Thu' => 'Do.',
    'Fri' => 'Fr.',
    'Sat' => 'Sa.',
    'Sun' => 'So.'
];
?>

<div class="container py-0">
    <?php if (isset($auto_declined) && $auto_declined === 'declined'): ?>
        <div class="alert alert-info alert-dismissible fade show" role="alert">
            Abwesenheitsmodus aktiv.
            <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
        </div>
    <?php endif; ?>

    <?php if (isset($_SESSION['success_message'])): ?>
        <div class="alert alert-info alert-dismissible fade show" role="alert">
            <?= htmlspecialchars($_SESSION['success_message']) ?>
            <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
        </div>
        <?php unset($_SESSION['success_message']); ?>
    <?php endif; ?>

    <?php if (isset($_SESSION['error_message'])): ?>
        <div class="alert alert-warning alert-dismissible fade show" role="alert">
            <?= htmlspecialchars($_SESSION['error_message']) ?>
            <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
        </div>
        <?php unset($_SESSION['error_message']); ?>
    <?php endif; ?>

    <div class="text-center mb-4">
        <h2 class="fw-bold">Farbe des nächsten Treffens</h2>
    </div>

    <?php if ($row): ?>
        <?php
        $english_weekday = date('D', strtotime($row['meeting_date']));
        $german_weekday = $german_weekdays[$english_weekday] ?? '';
        $color_stmt = mysqli_prepare($conn, "SELECT * FROM colors WHERE id = ?");
        mysqli_stmt_bind_param($color_stmt, "i", $row['color_id']);
        mysqli_stmt_execute($color_stmt);
        $color_row = mysqli_fetch_assoc(mysqli_stmt_get_result($color_stmt));
        ?>
        <div class="card mx-auto bg-light shadow mb-4" style="max-width: 500px;">
            <div class="card-body text-center">
                <div class="rounded-4 mb-3 mx-auto d-flex flex-column justify-content-center align-items-center color-box" style="background-image: linear-gradient(135deg, <?= htmlspecialchars($color_row['hex_code']) ?>, <?= darken_color($color_row['hex_code']) ?>);">
                    <p class="fs-5 fw-semibold m-0" style="color: <?= get_readable_text_color($color_row['hex_code']) ?>;"><?= htmlspecialchars($color_row['name']) ?></p>
                    <p class="fs-6 fw-normal m-0" style="color: <?= get_readable_text_color($color_row['hex_code']) ?>;"><?= htmlspecialchars($row['reason']) ?></p>
                </div>
                <p class="text-muted">nächster Termin:</p>
                <p class="text-muted h3 fw-bold mb-2"><?= $german_weekday . ' ' . date('d.m.Y H:i', strtotime($row['meeting_date'])) ?></p>
                <?php
                // Prüfen, ob der aktuelle Benutzer bereits einen aktiven Vorschlag hat
                $has_active_proposal = false;
                if ($row) {
                    $check_proposal = mysqli_prepare($conn, "
        SELECT 1 FROM meeting_reschedule_proposals 
        WHERE meeting_id = ? AND proposed_by_user_id = ? AND status = 'pending'
    ");
                    mysqli_stmt_bind_param($check_proposal, "ii", $meeting_id, $logged_in_user_id);
                    mysqli_stmt_execute($check_proposal);
                    $result_proposal = mysqli_stmt_get_result($check_proposal);
                    $has_active_proposal = (mysqli_fetch_assoc($result_proposal) !== null);
                    mysqli_stmt_close($check_proposal);
                }
                ?>

                <div class="mt-3 mb-2 text-center">
                    <?php if ($has_active_proposal): ?>
                        <div class="alert alert-info alert-sm mb-0" role="alert">
                            Dein Terminverschiebungsvorschlag befindet sich noch in der Abstimmung.
                        </div>
                    <?php else: ?>
                        <button class="btn btn-sm btn-outline-primary" type="button" data-bs-toggle="collapse" data-bs-target="#rescheduleForm" aria-expanded="false" aria-controls="rescheduleForm">
                            Terminverschiebung vorschlagen
                        </button>
                    <?php endif; ?>
                </div>
            </div>

            <!-- Verschiebungsformular -->
            <div class="collapse" id="rescheduleForm">
                <div class="card card-body bg-light mt-3 mx-auto" style="max-width: 90%;">
                    <h5>Anderen Termin vorschlagen</h5>
                    <form method="POST">
                        <div class="mb-3">
                            <label for="new_date" class="form-label">Neuer Termin:</label>
                            <input type="datetime-local" class="form-control" id="new_date" name="new_date" value="<?= date('Y-m-d\TH:i', strtotime($row['meeting_date'])) ?>" required>
                        </div>
                        <div class="mb-3">
                            <label for="reason" class="form-label">Grund/Bemerkung:</label>
                            <textarea class="form-control" id="reason" name="reason" rows="2" placeholder="Warum soll der Termin verschoben werden?"></textarea>
                        </div>
                        <div class="d-flex gap-2">
                            <button type="submit" name="propose_reschedule" class="btn btn-sm btn-outline-primary">Vorschlag einreichen</button>
                            <button type="button" class="btn btn-sm btn-outline-secondary" data-bs-toggle="collapse" data-bs-target="#rescheduleForm">Abbrechen</button>
                        </div>
                    </form>
                </div>
            </div>

            <!-- TODO: -->
            <div class="d-flex justify-content-center pt-2 pb-3" style="max-width: 500px; margin-left: auto; margin-right: auto; flex-direction: column; align-items: center;" <!-- inline-css-ok -->

                <?php if ($user_attendance_status === 'accepted'): ?>
                    <p class="text-success fw-bold mb-4">Du hast zugesagt!</p>
                    <div class="d-flex justify-content-center">
                        <a href="index.php?action=decline&meeting_id=<?= htmlspecialchars($meeting_id); ?>" class="btn btn-sm btn-outline-danger me-2">Absagen</a>
                        <a href="index.php?action=maybe&meeting_id=<?= htmlspecialchars($meeting_id); ?>" class="btn btn-sm btn-outline-info">noch unklar</a>
                    </div>
                <?php elseif ($user_attendance_status === 'declined'): ?>
                    <p class="text-danger fw-bold mb-4">Du hast abgesagt!</p>
                    <div class="d-flex justify-content-center">
                        <a href="index.php?action=accept&meeting_id=<?= htmlspecialchars($meeting_id); ?>" class="btn btn-sm btn-outline-success me-2">Zusagen</a>
                        <a href="index.php?action=maybe&meeting_id=<?= htmlspecialchars($meeting_id); ?>" class="btn btn-sm btn-outline-info">noch unklar</a>
                    </div>
                <?php elseif ($user_attendance_status === 'maybe'): ?>
                    <p class="text-muted fw-bold mb-4">Vielleicht dabei!</p>
                    <div class="d-flex justify-content-center">
                        <a href="index.php?action=accept&meeting_id=<?= htmlspecialchars($meeting_id); ?>" class="btn btn-sm btn-outline-success me-2">Zusagen</a>
                        <a href="index.php?action=decline&meeting_id=<?= htmlspecialchars($meeting_id); ?>" class="btn btn-sm btn-outline-danger">Absagen</a>
                    </div>
                <?php else: ?>
                    <p class="text-muted fw-bold mb-4">Bist du dabei?</p>
                    <div class="d-flex justify-content-center">
                        <a href="index.php?action=accept&meeting_id=<?= htmlspecialchars($meeting_id); ?>" class="btn btn-sm btn-outline-success me-2">Zusagen</a>
                        <a href="index.php?action=decline&meeting_id=<?= htmlspecialchars($meeting_id); ?>" class="btn btn-sm btn-outline-danger me-2">Absagen</a>
                        <a href="index.php?action=maybe&meeting_id=<?= htmlspecialchars($meeting_id); ?>" class="btn btn-sm btn-outline-info">Vielleicht</a>
                    </div>
                <?php endif; ?>
            </div>

            <?php if ($next_payer_username): ?>
                <div class="text-center my-2 mx-auto" style="max-width: 500px; border-radius: 0.5rem;">
                    <p class="fw-bold mb-1">Rechnung wird bezahlt von:</p>
                    <h4 class="text-muted fw-bold mb-0"><?= htmlspecialchars($next_payer_username); ?></h4>
                </div>
            <?php endif; ?>

            <div class="d-flex justify-content-center my-3" style="max-width: 500px; margin-left: auto; margin-right: auto;">
                <a href="admin/participant.php?id=<?= htmlspecialchars($row['id']) ?>" class="btn btn-sm btn-outline-secondary">Teilnahme eintragen</a>
            </div>

            <!-- Teilnehmerübersicht -->
            <div class="card-footer text-center mt-3">
                <p class="text-muted mb-1">Teilnehmerübersicht:</p>
                <div class="d-flex justify-content-around">
                    <div class="text-center">
                        <p class="text-success mb-1 small">
                            <a class="text-success text-decoration-none participant-toggle-collapse" href="#acceptedCollapse" role="button" aria-expanded="false" aria-controls="acceptedCollapse">
                                Zusagen: <?= $total_accepted; ?>
                            </a>
                        </p>
                        <div class="collapse mt-2" id="acceptedCollapse">
                            <?php if (!empty($accepted_users)): ?>
                                <ul class="list-unstyled mb-0">
                                    <?php foreach ($accepted_users as $user): ?>
                                        <li class="small"><?= $user; ?></li>
                                    <?php endforeach; ?>
                                </ul>
                            <?php else: ?>
                                <p class="mb-0 text-muted small">Keine</p>
                            <?php endif; ?>
                        </div>
                    </div>
                    <div class="text-center">
                        <p class="text-danger mb-1 small">
                            <a class="text-danger text-decoration-none participant-toggle-collapse" href="#declinedCollapse" role="button" aria-expanded="false" aria-controls="declinedCollapse">
                                Absagen: <?= $total_declined; ?>
                            </a>
                        </p>
                        <div class="collapse mt-2" id="declinedCollapse">
                            <?php if (!empty($declined_users)): ?>
                                <ul class="list-unstyled mb-0">
                                    <?php foreach ($declined_users as $user): ?>
                                        <li class="small"><?= $user; ?></li>
                                    <?php endforeach; ?>
                                </ul>
                            <?php else: ?>
                                <p class="mb-0 text-muted small">Keine</p>
                            <?php endif; ?>
                        </div>
                    </div>
                    <div class="text-center">
                        <p class="text-warning mb-1 small">
                            <a class="text-info text-decoration-none participant-toggle-collapse" href="#maybeCollapse" role="button" aria-expanded="false" aria-controls="maybeCollapse">
                                Vielleicht: <?= $total_maybe; ?>
                            </a>
                        </p>
                        <div class="collapse mt-2" id="maybeCollapse">
                            <?php if (!empty($maybe_users)): ?>
                                <ul class="list-unstyled mb-0">
                                    <?php foreach ($maybe_users as $user): ?>
                                        <li class="small"><?= $user; ?></li>
                                    <?php endforeach; ?>
                                </ul>
                            <?php else: ?>
                                <p class="mb-0 text-muted small">Keine</p>
                            <?php endif; ?>
                        </div>
                    </div>
                </div>
            </div>

            <!-- 🔹 TERMINVERSCHIEBUNGS-VORSCHLÄGE -->
            <?php if (!empty($active_proposals)): ?>
                <div class="mt-4 pt-3 border-top">
                    <h5 class="text-center mb-3">Aktive Verschiebungsvorschläge</h5>
                    <?php foreach ($active_proposals as $p): ?>
                        <div class="card mb-3 bg-light">
                            <div class="card-body">
                                <div class="d-flex justify-content-between align-items-start">
                                    <div>
                                        <h6 class="mb-1">
                                            <?= date('d.m.Y H:i', strtotime($p['proposed_date'])) ?>
                                            <?php if (!empty($p['proposer_name'])): ?>
                                                <small class="text-muted">(von <?= htmlspecialchars($p['proposer_name']) ?>)</small>
                                            <?php endif; ?>
                                        </h6>
                                        <p class="mb-2"><?= htmlspecialchars($p['reason'] ?: 'Kein Grund angegeben') ?></p>
                                    </div>
                                    <?php if ($p['proposed_by_user_id'] == $logged_in_user_id): ?>
                                        <div class="dropdown ms-2">
                                            <button class="btn btn-sm btn-outline-secondary dropdown-toggle" type="button" data-bs-toggle="dropdown" aria-expanded="false">⋯</button>
                                            <ul class="dropdown-menu">
                                                <li>
                                                    <a class="dropdown-item" href="#" data-bs-toggle="modal" data-bs-target="#editProposalModal<?= $p['id'] ?>">Bearbeiten</a>
                                                </li>
                                                <li>
                                                    <form method="POST" class="d-inline" onsubmit="return confirm('Vorschlag wirklich löschen?')">
                                                        <input type="hidden" name="proposal_id" value="<?= $p['id'] ?>">
                                                        <button type="submit" name="delete_proposal" class="dropdown-item text-danger">Löschen</button>
                                                    </form>
                                                </li>
                                            </ul>
                                        </div>
                                    <?php endif; ?>
                                </div>

                                <div class="mt-2">
                                    <small class="text-success">✅ Ja: <?= $p['yes_votes'] ?>
                                        <?php if (!empty($yes_voters[$p['id']])): ?>
                                            (<?= implode(', ', $yes_voters[$p['id']]) ?>)
                                        <?php endif; ?>
                                    </small><br>
                                    <small class="text-danger">❌ Nein: <?= $p['no_votes'] ?>
                                        <?php if (!empty($no_voters[$p['id']])): ?>
                                            (<?= implode(', ', $no_voters[$p['id']]) ?>)
                                        <?php endif; ?>
                                    </small>
                                </div>

                                <div class="mt-2">
                                    <div class="mt-2">
                                        <?php if (!isset($user_votes[$p['id']])): ?>
                                            <form method="POST" class="d-inline">
                                                <input type="hidden" name="proposal_id" value="<?= $p['id'] ?>">
                                                <button type="submit" name="vote_proposal" value="yes" class="btn btn-sm btn-success">✅ Ja</button>
                                                <button type="submit" name="vote_proposal" value="no" class="btn btn-sm btn-danger">❌ Nein</button>
                                            </form>
                                        <?php else: ?>
                                            <span class="badge bg-secondary">Bereits abgestimmt:
                                                <?= $user_votes[$p['id']] === 'yes' ? '✅ Ja' : '❌ Nein' ?>
                                            </span>
                                        <?php endif; ?>
                                    </div>

                                    <?php if (isset($_SESSION['role']) && $_SESSION['role'] === 'admin'): ?>
                                        <div class="mt-1">
                                            <form method="POST" class="d-inline">
                                                <input type="hidden" name="proposal_id" value="<?= $p['id'] ?>">
                                                <button type="submit" name="accept_proposal" class="btn btn-sm btn-outline-success" onclick="return confirm('Vorschlag wirklich annehmen? Der Termin wird verschoben!')">Annehmen</button>
                                                <button type="submit" name="reject_proposal" class="btn btn-sm btn-outline-danger" onclick="return confirm('Vorschlag wirklich ablehnen?')">Ablehnen</button>
                                            </form>
                                        </div>
                                    <?php endif; ?>
                                </div>
                            </div>
                        </div>

                        <!-- Bearbeiten-Modal -->
                        <div class="modal fade" id="editProposalModal<?= $p['id'] ?>" tabindex="-1">
                            <div class="modal-dialog">
                                <div class="modal-content">
                                    <div class="modal-header">
                                        <h5 class="modal-title">Vorschlag bearbeiten</h5>
                                        <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
                                    </div>
                                    <form method="POST">
                                        <div class="modal-body">
                                            <input type="hidden" name="proposal_id" value="<?= $p['id'] ?>">
                                            <div class="mb-3">
                                                <label>Neuer Termin</label>
                                                <input type="datetime-local" name="new_date" class="form-control"
                                                    value="<?= date('Y-m-d\TH:i', strtotime($p['proposed_date'])) ?>" required>
                                            </div>
                                            <div class="mb-3">
                                                <label>Grund</label>
                                                <textarea name="reason" class="form-control"><?= htmlspecialchars($p['reason']) ?></textarea>
                                            </div>
                                        </div>
                                        <div class="modal-footer">
                                            <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Abbrechen</button>
                                            <button type="submit" name="edit_proposal" class="btn btn-primary">Speichern</button>
                                        </div>
                                    </form>
                                </div>
                            </div>
                        </div>
                    <?php endforeach; ?>
                </div>
            <?php endif; ?>

        </div>

    <?php else: ?>
        <div class="alert alert-warning text-center">Keine anstehenden Termine gefunden.</div>
    <?php endif; ?>
</div>

<script>
    document.addEventListener('DOMContentLoaded', function() {
        const links = document.querySelectorAll('.participant-toggle-collapse');
        const collapseElements = document.querySelectorAll('.card-footer .collapse');
        links.forEach(link => {
            link.addEventListener('click', function(e) {
                e.preventDefault();
                const isExpanded = collapseElements[0].classList.contains('show');
                collapseElements.forEach(el => isExpanded ? el.classList.remove('show') : el.classList.add('show'));
                links.forEach(l => l.setAttribute('aria-expanded', !isExpanded));
            });
        });
    });
    if ('serviceWorker' in navigator) {
        window.addEventListener('load', () => {
            navigator.serviceWorker.register('/sw.js').catch(console.error);
        });
    }
</script>

<?php include('inc/footer.php'); ?>