<?php
/**
 * admin/novena_group.php — View and manage one novena group.
 */
require_once __DIR__ . '/../config/db.php';
require_once __DIR__ . '/../includes/auth.php';

require_auth();

$pdo  = get_pdo();
$user = current_user();
$uid  = (int)$user['id'];
$gid  = isset($_GET['id']) ? (int)$_GET['id'] : 0;
$site_name = get_setting('site_name', APP_NAME);

if ($gid < 1) {
    header('Location: ' . BASE_URL . '/admin/');
    exit;
}

// Load group and verify ownership
$group = $pdo->prepare('SELECT * FROM novena_groups WHERE id = ?');
$group->execute([$gid]);
$group = $group->fetch();

if (!$group) {
    header('Location: ' . BASE_URL . '/admin/');
    exit;
}

// Ownership check
if (!has_role('admin') && (int)$group['user_id'] !== $uid) {
    header('Location: ' . BASE_URL . '/admin/');
    exit;
}

$is_dm = ($group['mystery_set'] === 'chaplet');

// Handle delete of a single day session
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['delete_day_id'])) {
    $did = (int)$_POST['delete_day_id'];
    $pdo->prepare('DELETE FROM sessions WHERE id = ? AND novena_group_id = ?')->execute([$did, $gid]);

    $remaining = (int)$pdo->query("SELECT COUNT(*) FROM sessions WHERE novena_group_id = {$gid}")->fetchColumn();
    if ($remaining < 1) {
        $pdo->prepare('DELETE FROM novena_groups WHERE id = ?')->execute([$gid]);
        header('Location: ' . BASE_URL . '/admin/');
        exit;
    }
    header('Location: ' . BASE_URL . '/admin/novena_group.php?id=' . $gid . '&deleted=1');
    exit;
}

// Handle group-level metadata edit
$save_error   = '';
$save_success = false;

if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['save_group'])) {
    $g_name    = trim($_POST['g_name']  ?? '');
    $g_photo   = trim($_POST['g_photo'] ?? '') ?: null;
    $g_public  = isset($_POST['is_public']) ? 1 : 0;

    if ($is_dm) {
        // Divine Mercy: keep mystery_set as 'chaplet', no subject fields
        $g_mystery = 'chaplet';
        $g_subject = null;
        $g_pronoun = null;
        $g_dates   = null;
    } else {
        $g_mystery = trim($_POST['g_mystery'] ?? '');
        $g_subject = trim($_POST['g_subject'] ?? '') ?: null;
        $g_pronoun = trim($_POST['g_pronoun'] ?? '') ?: null;
        $g_dates   = trim($_POST['g_dates']   ?? '') ?: null;
    }

    $valid_mysteries = ['sorrowful', 'joyful', 'glorious', 'luminous', 'by_day_of_week', 'chaplet'];

    if ($g_name === '') {
        $save_error = 'Name is required.';
    } elseif (!in_array($g_mystery, $valid_mysteries, true)) {
        $save_error = 'Invalid mystery set.';
    } else {
        $pdo->prepare('
            UPDATE novena_groups
            SET    name = ?, mystery_set = ?, subject_name = ?,
                   subject_pronoun = ?, subject_dates = ?,
                   photo_path = COALESCE(?, photo_path),
                   is_public = ?
            WHERE  id = ?
        ')->execute([$g_name, $g_mystery, $g_subject, $g_pronoun, $g_dates, $g_photo, $g_public, $gid]);

        $pdo->prepare('
            UPDATE sessions
            SET    mystery_set = ?, subject_name = ?,
                   subject_pronoun = ?, subject_dates = ?,
                   photo_path = COALESCE(?, photo_path),
                   name = CONCAT(?, CONCAT(\' — Day \', novena_day)),
                   is_public = ?
            WHERE  novena_group_id = ?
        ')->execute([$g_mystery, $g_subject, $g_pronoun, $g_dates, $g_photo, $g_name, $g_public, $gid]);

        $save_success = true;
        // Reload group
        $grp_stmt = $pdo->prepare('SELECT * FROM novena_groups WHERE id = ?');
        $grp_stmt->execute([$gid]);
        $group = $grp_stmt->fetch();
    }
}

$days = $pdo->prepare('SELECT * FROM sessions WHERE novena_group_id = ? ORDER BY novena_day');
$days->execute([$gid]);
$days = $days->fetchAll();

$mystery_labels = [
    'sorrowful'      => 'Sorrowful Mysteries',
    'joyful'         => 'Joyful Mysteries',
    'glorious'       => 'Glorious Mysteries',
    'luminous'       => 'Luminous Mysteries',
    'by_day_of_week' => 'By Day of Week',
    'chaplet'        => 'Chaplet of Divine Mercy',
];
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="icon" type="image/svg+xml" href="<?= BASE_URL ?>/favicon.svg">
    <title><?= htmlspecialchars($group['name']) ?> — <?= htmlspecialchars($site_name) ?></title>
    <link rel="stylesheet" href="<?= BASE_URL ?>/assets/css/setup.css">
    <script>var BASE_URL = '<?= BASE_URL ?>';</script>
</head>
<body>
<div class="admin-container">

    <header class="admin-header">
        <h1>&#x271D; <?= htmlspecialchars($site_name) ?></h1>
        <div class="header-actions">
            <a href="<?= BASE_URL ?>/" class="btn btn-ghost" style="font-size:13px">&#x2190; View Site</a>
            <?php if (has_role('admin')): ?>
                <a href="<?= BASE_URL ?>/admin/users.php" class="btn btn-ghost">Users</a>
            <?php endif; ?>
            <?php if (has_role('superadmin')): ?>
                <a href="<?= BASE_URL ?>/admin/settings.php" class="btn btn-ghost">Settings</a>
            <?php endif; ?>
            <a href="<?= BASE_URL ?>/admin/profile.php" class="btn btn-ghost"><?= htmlspecialchars($user['display_name'] ?: $user['username']) ?></a>
            <a href="<?= BASE_URL ?>/admin/" class="btn btn-ghost">&#x2190; All Sessions</a>
            <a href="<?= BASE_URL ?>/logout" class="btn btn-ghost">Logout</a>
        </div>
    </header>

    <main>
        <nav class="breadcrumb">
            <a href="<?= BASE_URL ?>/admin/">Sessions</a>
            <span class="bc-sep">/</span>
            <span><?= htmlspecialchars($group['name']) ?></span>
        </nav>

        <?php if (isset($_GET['deleted'])): ?>
        <div class="alert alert-success">Day deleted successfully.</div>
        <?php endif; ?>
        <?php if ($save_success): ?>
        <div class="alert alert-success">&#x2713; Novena updated. Changes applied to all 9 day sessions.</div>
        <?php elseif ($save_error): ?>
        <div class="alert alert-error"><?= htmlspecialchars($save_error) ?></div>
        <?php endif; ?>

        <section class="card" style="margin-bottom:32px">
            <h2 class="card-title">Novena Details</h2>
            <form method="post">
                <input type="hidden" name="save_group" value="1">

                <div class="form-grid">
                    <div class="form-group">
                        <label class="form-label" for="g_name">Novena Name</label>
                        <input type="text" id="g_name" name="g_name" class="form-input"
                               value="<?= htmlspecialchars($group['name']) ?>" required>
                        <p class="form-help">Used as the base name for all 9 days.</p>
                    </div>

                    <?php if (!$is_dm): ?>
                    <div class="form-group">
                        <label class="form-label" for="g_mystery">Mysteries</label>
                        <select id="g_mystery" name="g_mystery" class="form-input">
                            <?php foreach ([
                                'sorrowful'      => 'All Sorrowful Mysteries',
                                'by_day_of_week' => 'By Day of Week',
                                'joyful'         => 'All Joyful Mysteries',
                                'glorious'       => 'All Glorious Mysteries',
                                'luminous'       => 'All Luminous Mysteries',
                            ] as $val => $label): ?>
                            <option value="<?= $val ?>" <?= $group['mystery_set'] === $val ? 'selected' : '' ?>>
                                <?= $label ?>
                            </option>
                            <?php endforeach; ?>
                        </select>
                    </div>

                    <div class="form-group">
                        <label class="form-label" for="g_subject">Name of Deceased</label>
                        <input type="text" id="g_subject" name="g_subject" class="form-input"
                               value="<?= htmlspecialchars($group['subject_name'] ?? '') ?>">
                    </div>

                    <div class="form-group">
                        <label class="form-label">Pronoun</label>
                        <div class="radio-row">
                            <label><input type="radio" name="g_pronoun" value="he"
                                <?= ($group['subject_pronoun'] ?? 'he') === 'he' ? 'checked' : '' ?>> He / Him</label>
                            <label><input type="radio" name="g_pronoun" value="she"
                                <?= ($group['subject_pronoun'] ?? '') === 'she' ? 'checked' : '' ?>> She / Her</label>
                        </div>
                    </div>

                    <div class="form-group">
                        <label class="form-label" for="g_dates">Life Dates</label>
                        <input type="text" id="g_dates" name="g_dates" class="form-input"
                               placeholder="e.g., March 15, 1942 – June 3, 2025"
                               value="<?= htmlspecialchars($group['subject_dates'] ?? '') ?>">
                    </div>
                    <?php endif; ?>

                    <div class="form-group" id="photo-group">
                        <label class="form-label">Photo</label>
                        <?php if ($group['photo_path']): ?>
                        <div class="photo-preview-wrap">
                            <img id="photo-preview" src="<?= htmlspecialchars('/' . ltrim($group['photo_path'], '/')) ?>"
                                 alt="Current photo" class="photo-preview">
                        </div>
                        <?php else: ?>
                        <div class="photo-preview-wrap" style="display:none">
                            <img id="photo-preview" src="" alt="" class="photo-preview">
                        </div>
                        <?php endif; ?>
                        <input type="hidden" id="g_photo" name="g_photo"
                               value="<?= htmlspecialchars($group['photo_path'] ?? '') ?>">
                        <label class="btn btn-secondary btn-upload" style="margin-top:8px">
                            <?= $group['photo_path'] ? 'Replace Photo' : 'Upload Photo' ?>
                            <input type="file" id="photo-file" accept="image/*" style="display:none">
                        </label>
                        <span id="photo-status" class="form-help"></span>
                    </div>

                    <div class="form-group">
                        <label style="display:flex;align-items:center;gap:10px;cursor:pointer">
                            <input type="checkbox" name="is_public" value="1"
                                   <?= $group['is_public'] ? 'checked' : '' ?>
                                   style="width:18px;height:18px">
                            <span>Public (visible on your profile)</span>
                        </label>
                    </div>
                </div>

                <div class="form-actions">
                    <button type="submit" class="btn btn-primary">Save Changes to All Days</button>
                </div>
            </form>
        </section>

        <section>
            <h2 style="margin-bottom:16px">Days (<?= count($days) ?> of 9)</h2>
            <div class="sessions-table-wrap">
            <table class="sessions-table">
                <thead>
                    <tr>
                        <th>Day</th>
                        <th>Mysteries</th>
                        <th>Actions</th>
                    </tr>
                </thead>
                <tbody>
                <?php for ($d = 1; $d <= 9; $d++):
                    $ses = null;
                    foreach ($days as $day_row) {
                        if ((int)$day_row['novena_day'] === $d) { $ses = $day_row; break; }
                    }
                ?>
                <tr <?= !$ses ? 'class="day-missing"' : '' ?>>
                    <td><strong>Day <?= $d ?></strong></td>
                    <td><?= $ses ? htmlspecialchars($mystery_labels[$ses['mystery_set']] ?? $ses['mystery_set']) : '<em>missing</em>' ?></td>
                    <td class="actions">
                        <?php if ($ses): ?>
                        <a href="<?= BASE_URL ?>/present.php?id=<?= $ses['id'] ?>"
                           target="_blank"
                           class="btn btn-sm btn-primary">Present</a>
                        <form method="post" style="display:inline"
                              onsubmit="return confirm('Delete Day <?= $d ?>?')">
                            <input type="hidden" name="delete_day_id" value="<?= $ses['id'] ?>">
                            <button type="submit" class="btn btn-sm btn-danger">Delete</button>
                        </form>
                        <?php else: ?>
                        <span class="text-muted">—</span>
                        <?php endif; ?>
                    </td>
                </tr>
                <?php endfor; ?>
                </tbody>
            </table>
            </div>
        </section>
    </main>
</div>

<script>
(function () {
    var fileInput   = document.getElementById('photo-file');
    var photoHidden = document.getElementById('g_photo');
    var photoStatus = document.getElementById('photo-status');
    var previewWrap = document.querySelector('.photo-preview-wrap');
    var previewImg  = document.getElementById('photo-preview');

    if (!fileInput) return;

    fileInput.addEventListener('change', function () {
        var file = fileInput.files[0];
        if (!file) return;
        var fd = new FormData();
        fd.append('photo', file);
        photoStatus.textContent = 'Uploading\u2026';

        fetch(BASE_URL + '/api/upload_photo.php', { method: 'POST', body: fd })
            .then(function (r) { return r.json(); })
            .then(function (data) {
                if (data.path) {
                    photoHidden.value = data.path;
                    previewImg.src    = '/' + data.path.replace(/^\//, '');
                    previewWrap.style.display = '';
                    photoStatus.textContent   = 'Photo ready.';
                } else {
                    photoStatus.textContent = 'Upload failed: ' + (data.error || 'unknown error');
                }
            })
            .catch(function () { photoStatus.textContent = 'Upload failed.'; });
    });
}());
</script>
</body>
</html>