<?php
/**
 * index.php — Public home page. Shows all public rosary sessions.
 * No auth required.
 *
 * MIGRATION (run once on existing installs):
 *   ALTER TABLE sessions      ADD COLUMN is_pinned TINYINT(1) NOT NULL DEFAULT 0;
 *   ALTER TABLE novena_groups ADD COLUMN is_pinned TINYINT(1) NOT NULL DEFAULT 0;
 */
require_once __DIR__ . '/config/db.php';
require_once __DIR__ . '/includes/auth.php';
require_once __DIR__ . '/includes/donate.php';

_auth_start();
$pdo       = get_pdo();
$site_name = get_setting('site_name', APP_NAME);
$logged_in = !empty($_SESSION['user_id']);
$username  = $_SESSION['username'] ?? '';
$is_admin  = $logged_in && has_role('admin');

// ---------------------------------------------------------------------------
// Queries — pinned and regular items are fetched separately
// ---------------------------------------------------------------------------

// Pinned sessions
$pinned_sessions = $pdo->query("
    SELECT s.id, s.name, s.occasion, s.mystery_set, s.subject_name, s.photo_path, s.slug,
           s.is_pinned, s.created_at, u.username, u.display_name
    FROM   sessions s
    JOIN   users u ON u.id = s.user_id
    WHERE  s.is_public = 1
      AND  s.occasion NOT IN ('novena_deceased', 'divine_mercy_novena')
      AND  s.is_pinned = 1
    ORDER  BY s.created_at DESC
    LIMIT  20
")->fetchAll();

// Pinned novena groups
$pinned_novenas = $pdo->query("
    SELECT ng.id, ng.name, ng.mystery_set, ng.subject_name, ng.photo_path, ng.slug,
           ng.is_pinned, ng.created_at, u.username, u.display_name,
           COUNT(s.id) AS day_count
    FROM   novena_groups ng
    JOIN   users u ON u.id = ng.user_id
    LEFT   JOIN sessions s ON s.novena_group_id = ng.id
    WHERE  ng.is_public = 1
      AND  ng.is_pinned = 1
    GROUP  BY ng.id
    ORDER  BY ng.created_at DESC
    LIMIT  20
")->fetchAll();

// Regular (unpinned) sessions
$sessions = $pdo->query("
    SELECT s.id, s.name, s.occasion, s.mystery_set, s.subject_name, s.photo_path, s.slug,
           s.is_pinned, s.created_at, u.username, u.display_name
    FROM   sessions s
    JOIN   users u ON u.id = s.user_id
    WHERE  s.is_public = 1
      AND  s.occasion NOT IN ('novena_deceased', 'divine_mercy_novena')
      AND  s.is_pinned = 0
    ORDER  BY s.created_at DESC
    LIMIT  60
")->fetchAll();

// Regular (unpinned) novena groups
$novenas = $pdo->query("
    SELECT ng.id, ng.name, ng.mystery_set, ng.subject_name, ng.photo_path, ng.slug,
           ng.is_pinned, ng.created_at, u.username, u.display_name,
           COUNT(s.id) AS day_count
    FROM   novena_groups ng
    JOIN   users u ON u.id = ng.user_id
    LEFT   JOIN sessions s ON s.novena_group_id = ng.id
    WHERE  ng.is_public = 1
      AND  ng.is_pinned = 0
    GROUP  BY ng.id
    ORDER  BY ng.created_at DESC
    LIMIT  30
")->fetchAll();

// Public users list (for search user-pill links)
$public_users_rows = $pdo->query("
    SELECT DISTINCT u.username,
           COALESCE(NULLIF(u.display_name,''), u.username) AS display_name
    FROM   users u
    WHERE  u.id IN (
               SELECT user_id FROM sessions      WHERE is_public = 1
               UNION
               SELECT user_id FROM novena_groups WHERE is_public = 1
           )
    ORDER  BY u.username
    LIMIT  300
")->fetchAll(PDO::FETCH_ASSOC);

// Merge and sort each group newest-first
function merge_and_sort(array $sessions, array $novenas): array {
    $all = [];
    foreach ($sessions as $r) { $r['_type'] = 'session'; $all[] = $r; }
    foreach ($novenas  as $r) { $r['_type'] = 'novena';  $all[] = $r; }
    usort($all, fn($a, $b) => strcmp($b['created_at'], $a['created_at']));
    return $all;
}

$pinned = merge_and_sort($pinned_sessions, $pinned_novenas);
$regular = merge_and_sort($sessions,       $novenas);

// ---------------------------------------------------------------------------
// Label maps
// ---------------------------------------------------------------------------
$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',
];
$occasion_labels = [
    'general_rosary'     => 'General Rosary',
    'memorial'           => 'Memorial',
    'novena_deceased'    => 'Novena for Deceased',
    'divine_mercy_novena'=> 'Divine Mercy Novena',
];

// ---------------------------------------------------------------------------
// Card renderer (shared by pinned + regular sections)
// ---------------------------------------------------------------------------
function render_card(array $row, bool $is_admin, array $mystery_labels, array $occasion_labels): void {
    $disp_name  = $row['display_name'] ?: $row['username'];
    $slug       = $row['slug'] ?? '';
    $is_novena  = ($row['_type'] === 'novena');
    $is_pinned  = !empty($row['is_pinned']);
    $url        = $slug
        ? (BASE_URL . '/' . rawurlencode($row['username']) . '/' . rawurlencode($slug))
        : '#';
    $link_text  = $is_novena ? 'Select a Day &rarr;' : 'Pray &rarr;';

    // For the Divine Mercy Novena badge (mystery_set = 'chaplet')
    $is_dm = ($is_novena && ($row['mystery_set'] ?? '') === 'chaplet');

    $card_class = 'rosary-card' . ($is_pinned ? ' is-pinned' : '');

    // Data attributes for client-side search
    $d_name    = htmlspecialchars($row['name'],                         ENT_QUOTES);
    $d_subject = htmlspecialchars($row['subject_name'] ?? '',           ENT_QUOTES);
    $d_uname   = htmlspecialchars($row['username'],                     ENT_QUOTES);
    $d_display = htmlspecialchars($disp_name,                           ENT_QUOTES);
    $type_str  = $is_novena ? 'novena' : 'session';
    $row_id    = (int)$row['id'];
?>
    <div class="<?= $card_class ?>"
         data-name="<?= $d_name ?>"
         data-subject="<?= $d_subject ?>"
         data-username="<?= $d_uname ?>"
         data-display="<?= $d_display ?>">

        <?php if ($is_admin): ?>
            <button class="pin-btn <?= $is_pinned ? 'is-pinned' : '' ?>"
                    data-type="<?= $type_str ?>"
                    data-id="<?= $row_id ?>"
                    title="<?= $is_pinned ? 'Unpin from Featured' : 'Pin to Featured' ?>">
                <?= $is_pinned ? '📌' : '📍' ?>
            </button>
        <?php endif; ?>

        <?php if (!empty($row['photo_path'])): ?>
            <img class="rosary-card-photo"
                 src="<?= htmlspecialchars('/' . ltrim($row['photo_path'], '/')) ?>"
                 alt="">
        <?php else: ?>
            <div class="rosary-card-photo-placeholder">&#x271D;</div>
        <?php endif; ?>

        <div class="rosary-card-body">
            <div class="rosary-card-title"><?= htmlspecialchars($row['name']) ?></div>
            <div class="rosary-card-meta">
                <?php if ($is_novena): ?>
                    <?php if ($is_dm): ?>
                        <span class="badge-divine-mercy">Divine Mercy</span>
                    <?php else: ?>
                        <span class="badge-novena">9-Day Novena</span>
                        <?php if ($row['subject_name']): ?>
                            &nbsp;<?= htmlspecialchars($row['subject_name']) ?>
                        <?php endif; ?>
                    <?php endif; ?>
                <?php else: ?>
                    <?= htmlspecialchars($occasion_labels[$row['occasion']] ?? $row['occasion']) ?> &bull;
                    <?= htmlspecialchars($mystery_labels[$row['mystery_set']] ?? $row['mystery_set']) ?>
                <?php endif; ?>
            </div>
            <div class="rosary-card-footer">
                <span class="rosary-card-by">By <?= htmlspecialchars($disp_name) ?></span>
                <a href="<?= htmlspecialchars($url) ?>" class="rosary-card-link"><?= $link_text ?></a>
            </div>
        </div>
    </div>
<?php
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="icon" type="image/svg+xml" href="<?= BASE_URL ?>/favicon.svg">
    <title><?= htmlspecialchars($site_name) ?></title>
    <link rel="stylesheet" href="<?= BASE_URL ?>/assets/css/public.css">
</head>
<body>

<nav class="pub-nav">
    <a href="<?= BASE_URL ?>/" class="pub-nav-brand">&#x271D; <span><?= htmlspecialchars($site_name) ?></span></a>
    <div class="pub-nav-links">
        <?php if ($logged_in): ?>
            <a href="<?= BASE_URL ?>/admin/">Dashboard</a>
            <a href="<?= BASE_URL ?>/logout">Logout</a>
        <?php else: ?>
            <a href="<?= BASE_URL ?>/login">Sign In</a>
            <a href="<?= BASE_URL ?>/register" class="btn-nav">Get Started</a>
        <?php endif; ?>
    </div>
</nav>

<div class="pub-hero">
    <h1>&#x271D; Pray the Rosary Together</h1>
    <p>A shared presentation for families and communities praying the Holy Rosary.</p>
</div>

<!-- Search bar -->
<div class="search-wrap">
    <div class="home-search-row">
        <span class="home-search-icon">&#128269;</span>
        <input type="search" id="home-search"
               class="home-search-input"
               placeholder="Search by rosary name, honoree, or username&hellip;"
               autocomplete="off"
               aria-label="Search rosaries">
        <button class="home-search-clear" id="search-clear" aria-label="Clear search">&#10005;</button>
    </div>
    <div class="search-user-results" id="search-user-results" aria-live="polite"></div>
</div>

<!-- ── Featured / Pinned section ── -->
<?php if (!empty($pinned)): ?>
<div class="pinned-section" id="pinned-section">
    <div class="pub-section">
        <h2>&#128204; Featured</h2>
        <div class="card-grid" id="pinned-grid">
            <?php foreach ($pinned as $row): render_card($row, $is_admin, $mystery_labels, $occasion_labels); endforeach; ?>
        </div>
        <p class="search-no-results" id="pinned-no-results">No featured rosaries match your search.</p>
    </div>
</div>
<?php endif; ?>

<!-- ── All public rosaries ── -->
<div class="pub-section" id="regular-section">
    <h2>Public Rosaries</h2>

    <?php if (empty($regular) && empty($pinned)): ?>
        <div class="pub-empty">
            <span class="cross">&#x271D;</span>
            <p>No public rosary sessions yet. <a href="<?= BASE_URL ?>/register">Create an account</a> to get started.</p>
        </div>
    <?php elseif (empty($regular)): ?>
        <p class="search-no-results" style="display:block;padding:0 0 24px;text-align:left;color:var(--muted)">
            All rosaries are currently featured above.
        </p>
    <?php else: ?>
        <div class="card-grid" id="regular-grid">
            <?php foreach ($regular as $row): render_card($row, $is_admin, $mystery_labels, $occasion_labels); endforeach; ?>
        </div>
        <p class="search-no-results" id="regular-no-results">No rosaries match your search.</p>
    <?php endif; ?>
</div>

<?php render_donate_strip(); ?>

<footer class="pub-footer">
    &copy; <?= date('Y') ?> <?= htmlspecialchars($site_name) ?>
    <?php if (!$logged_in): ?>
        &bull; <a href="<?= BASE_URL ?>/register" style="color:inherit">Create Account</a>
        &bull; <a href="<?= BASE_URL ?>/login" style="color:inherit">Sign In</a>
    <?php endif; ?>
</footer>

<script>
var BASE_URL     = <?= json_encode(BASE_URL) ?>;
var IS_ADMIN     = <?= $is_admin ? 'true' : 'false' ?>;
var PUBLIC_USERS = <?= json_encode(array_values($public_users_rows), JSON_HEX_TAG | JSON_HEX_AMP) ?>;

(function () {
    'use strict';

    // ------------------------------------------------------------------
    // Search
    // ------------------------------------------------------------------
    var searchInput    = document.getElementById('home-search');
    var clearBtn       = document.getElementById('search-clear');
    var userResultsBox = document.getElementById('search-user-results');
    var pinnedSection  = document.getElementById('pinned-section');
    var pinnedGrid     = document.getElementById('pinned-grid');
    var regularGrid    = document.getElementById('regular-grid');
    var pinnedNoRes    = document.getElementById('pinned-no-results');
    var regularNoRes   = document.getElementById('regular-no-results');

    // All cards across both grids
    var allCards = document.querySelectorAll('.rosary-card[data-name]');

    // Build a map of username → display_name from PUBLIC_USERS
    // (includes users who may not appear in any visible card, so full search covers them)
    var userMap = {};
    PUBLIC_USERS.forEach(function (u) { userMap[u.username] = u.display_name; });

    var debounceTimer = null;

    if (searchInput) {
        searchInput.addEventListener('input', function () {
            clearTimeout(debounceTimer);
            debounceTimer = setTimeout(function () { applySearch(searchInput.value.trim()); }, 120);
            clearBtn.classList.toggle('visible', searchInput.value.length > 0);
        });
    }

    if (clearBtn) {
        clearBtn.addEventListener('click', function () {
            searchInput.value = '';
            clearBtn.classList.remove('visible');
            applySearch('');
            searchInput.focus();
        });
    }

    function applySearch(raw) {
        var q = raw.toLowerCase();

        if (!q) {
            // Reset: show everything
            allCards.forEach(function (c) { c.style.display = ''; });
            if (userResultsBox) userResultsBox.innerHTML = '';
            toggleSectionVisibility(true, true);
            return;
        }

        var pinnedVisible  = 0;
        var regularVisible = 0;

        allCards.forEach(function (card) {
            var inPinned = pinnedGrid && pinnedGrid.contains(card);
            var match =
                (card.dataset.name    || '').toLowerCase().includes(q) ||
                (card.dataset.subject || '').toLowerCase().includes(q) ||
                (card.dataset.username|| '').toLowerCase().includes(q) ||
                (card.dataset.display || '').toLowerCase().includes(q);

            card.style.display = match ? '' : 'none';
            if (match) {
                if (inPinned) pinnedVisible++;
                else          regularVisible++;
            }
        });

        toggleSectionVisibility(pinnedVisible > 0, regularVisible > 0);
        renderUserLinks(q);
    }

    function toggleSectionVisibility(showPinned, showRegular) {
        if (pinnedSection) {
            pinnedSection.style.display = showPinned ? '' : 'none';
            if (pinnedNoRes) pinnedNoRes.style.display = showPinned ? 'none' : 'block';
        }
        if (regularNoRes) {
            regularNoRes.style.display = (regularGrid && !showRegular) ? 'block' : 'none';
        }
    }

    function renderUserLinks(q) {
        if (!userResultsBox) return;
        userResultsBox.innerHTML = '';
        if (!q) return;

        var matches = Object.keys(userMap).filter(function (uname) {
            return uname.toLowerCase().includes(q) ||
                   userMap[uname].toLowerCase().includes(q);
        });

        matches.forEach(function (uname) {
            var a = document.createElement('a');
            a.href      = BASE_URL + '/' + encodeURIComponent(uname);
            a.className = 'search-user-pill';
            a.innerHTML = '&#128100; ' + escHtml(userMap[uname]) + '\'s rosaries &rarr;';
            userResultsBox.appendChild(a);
        });
    }

    function escHtml(str) {
        return str.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;').replace(/"/g,'&quot;');
    }

    // ------------------------------------------------------------------
    // Pin / Unpin toggle (admin only)
    // ------------------------------------------------------------------
    if (IS_ADMIN) {
        document.querySelectorAll('.pin-btn').forEach(function (btn) {
            btn.addEventListener('click', function (e) {
                e.stopPropagation();
                var type = btn.dataset.type;
                var id   = btn.dataset.id;
                btn.disabled = true;

                var fd = new FormData();
                fd.append('type', type);
                fd.append('id',   id);

                fetch(BASE_URL + '/api/toggle_pin.php', { method: 'POST', body: fd })
                    .then(function (r) { return r.json(); })
                    .then(function () { window.location.reload(); })
                    .catch(function () {
                        btn.disabled = false;
                        alert('Could not toggle pin. Please try again.');
                    });
            });
        });
    }

})();
</script>

</body>
</html>