xamxam/public/index.php

<?php
// Load configuration
require_once __DIR__ . '/../config/bootstrap.php';
require_once APP_ROOT . '/src/Database.php';

$page = isset($_GET["page"]) ? max(1, intval($_GET["page"])) : 1;
$year = isset($_GET["year"]) ? intval($_GET["year"]) : null;
$itemsPerPage = 24;

// Default home view: random theses from latest year (no year filter, no explicit page)
$isDefaultView = (!$year && $page === 1);

try {
    $db = Database::getInstance();
    $offset = ($page - 1) * $itemsPerPage;
    $availableYears = $db->getAvailableYears();

    if ($year) {
        $itemsToLoad = $db->searchTheses(['year' => $year], $itemsPerPage, $offset);
        $totalItems  = $db->countSearchResults(['year' => $year]);
    } elseif ($isDefaultView) {
        $latestYear  = $db->getLatestPublishedYear();
        $itemsToLoad = $db->getLatestYearTheses($itemsPerPage);
        $totalItems  = count($itemsToLoad); // no pagination on default view
    } else {
        $itemsToLoad = $db->getPublishedTheses($itemsPerPage, $offset);
        $totalItems  = $db->countPublishedTheses();
    }

    $totalPages = $isDefaultView ? 1 : (int)ceil($totalItems / $itemsPerPage);

    // Batch-load cover images for theses that have no banner_path
    $coverMap = [];
    if (!empty($itemsToLoad)) {
        $needCover = array_column(
            array_filter($itemsToLoad, fn($t) => empty($t['banner_path'])),
            'id'
        );
        $coverMap = $db->getCoverPathsForTheses($needCover);
    }
} catch (Exception $e) {
    error_log("Error loading theses: " . $e->getMessage());
    $itemsToLoad = [];
    $totalPages  = 0;
    $availableYears = [];
    $totalItems  = 0;
    $latestYear  = null;
    $isDefaultView = false;
    $coverMap = [];
}

$currentNav = '';
$pageTitle = 'Posterg – Mémoires de l\'ERG';
$metaDescription = 'Posterg répertorie et valorise les mémoires de fin d\'études (TFE) de l\'erg – École de Recherches Graphiques de Bruxelles.';
$ogTags = [
    'type'        => 'website',
    'title'       => $pageTitle,
    'description' => $metaDescription,
    'url'         => 'https://posterg.erg.be/',
    'site_name'   => 'Posterg – ERG',
];
$extraCss = ['/assets/css/main.css'];
$bodyClass = 'home-body';
?>
<?php include APP_ROOT . '/templates/head.php'; ?>
    <?php include APP_ROOT . '/templates/header.php'; ?>

    <?php if ($year): ?>
    <p class="filter-info" role="status">
        Année : <?= htmlspecialchars($year) ?>
        <a href="index.php" class="clear-filter"><span aria-hidden="true">✕</span> Réinitialiser</a>
    </p>
    <?php elseif ($isDefaultView && !empty($latestYear)): ?>
    <p class="filter-info home-latest-label" role="status">
        Découvrez les TFE de <?= (int)$latestYear ?> — sélection aléatoire
    </p>
    <?php endif; ?>

    <main class="home-main" id="main-content">
        <h1 class="sr-only">Mémoires de l'ERG</h1>
        <ul class="cards-container">
            <?php foreach ($itemsToLoad as $item): ?>
                <li class="card">
                    <a href="tfe.php?id=<?= (int)$item["id"] ?>">
                        <?php
                        // Resolve thumbnail: banner_path → cover file → gradient placeholder
                        $thumb = null;

                        // 1. Banner path (dedicated home thumbnail)
                        if (!empty($item['banner_path'])) {
                            $thumb = $item['banner_path'];
                        }

                        // 2. Cover image from thesis_files (batch-loaded above)
                        if (!$thumb && isset($coverMap[$item['id']])) {
                            $thumb = $coverMap[$item['id']];
                        }

                        // 3. Fall through to gradient
                        ?>
                        <?php if ($thumb): ?>
                            <figure>
                                <img src="/media.php?path=<?= urlencode($thumb) ?>"
                                     alt="Couverture — <?= htmlspecialchars($item['title']) ?> par <?= htmlspecialchars($item['authors'] ?? '') ?>"
                                     loading="lazy">
                            </figure>
                        <?php else: ?>
                            <?php
                            $hue  = ($item['id'] * 47 + 160) % 360;
                            $hue2 = ($hue + 40) % 360;
                            ?>
                            <div class="card__media--gradient"
                                 style="background:linear-gradient(135deg,hsl(<?= $hue ?>,55%,40%),hsl(<?= $hue2 ?>,50%,28%));"
                                 aria-hidden="true">
                                <span class="card__gradient-author"><?= htmlspecialchars($item['authors'] ?? '') ?></span>
                                <span class="card__gradient-title"><?= htmlspecialchars($item['title']) ?></span>
                            </div>
                        <?php endif; ?>
                        <p><?= htmlspecialchars($item["authors"] ?? '') ?><?php if (!empty($item['authors']) && !empty($item['title'])): ?> – <?php endif; ?><?= htmlspecialchars($item["title"]) ?></p>
                    </a>
                </li>
            <?php endforeach; ?>

            <?php if (empty($itemsToLoad)): ?>
                <li class="cards-empty">Aucun mémoire trouvé.</li>
            <?php endif; ?>
        </ul>

        <?php if ($totalPages > 1): ?>
        <nav class="pagination-wrap" aria-label="Pagination">
            <?php $yearParam = $year ? '&year=' . (int)$year : ''; ?>
            <ul>
                <li>
                    <a href="?page=1<?= $yearParam ?>"
                       class="pagination-btn <?= $page <= 1 ? 'disabled' : '' ?>"
                       <?= $page <= 1 ? 'aria-disabled="true" tabindex="-1"' : '' ?>
                       aria-label="Première page">«</a>
                </li>
                <li>
                    <a href="?page=<?= max(1, $page - 1) . $yearParam ?>"
                       class="pagination-btn <?= $page <= 1 ? 'disabled' : '' ?>"
                       <?= $page <= 1 ? 'aria-disabled="true" tabindex="-1"' : '' ?>
                       aria-label="Page précédente">‹</a>
                </li>
                <li class="pagination-info" aria-current="page">
                    <span class="page-current"><?= $page ?></span> / <?= $totalPages ?>
                </li>
                <li>
                    <a href="?page=<?= min($totalPages, $page + 1) . $yearParam ?>"
                       class="pagination-btn <?= $page >= $totalPages ? 'disabled' : '' ?>"
                       <?= $page >= $totalPages ? 'aria-disabled="true" tabindex="-1"' : '' ?>
                       aria-label="Page suivante">›</a>
                </li>
                <li>
                    <a href="?page=<?= $totalPages . $yearParam ?>"
                       class="pagination-btn <?= $page >= $totalPages ? 'disabled' : '' ?>"
                       <?= $page >= $totalPages ? 'aria-disabled="true" tabindex="-1"' : '' ?>
                       aria-label="Dernière page">»</a>
                </li>
            </ul>
        </nav>
        <?php endif; ?>
    </main>

<?php include APP_ROOT . '/templates/footer.php'; ?>