gestoria-lp/admin/clientes.php

<?php
$pageTitle = 'Clientes';
require_once __DIR__ . '/../includes/db.php';
require_once __DIR__ . '/includes/admin-header.php';

$db = getDB();

// Search & Pagination
$q = trim($_GET['q'] ?? '');
$page = max(1, (int)($_GET['page'] ?? 1));
$perPage = 15;
$offset = ($page - 1) * $perPage;

// Build query
$where = '';
$params = [];
if ($q !== '') {
    $where = 'WHERE c.nombre LIKE ? OR c.telefono LIKE ? OR c.email LIKE ?';
    $like = '%' . $q . '%';
    $params = [$like, $like, $like];
}

// Count total
$countSql = "SELECT COUNT(DISTINCT c.id) FROM clientes c $where";
$countStmt = $db->prepare($countSql);
$countStmt->execute($params);
$totalClientes = $countStmt->fetchColumn();
$totalPages = max(1, (int)ceil($totalClientes / $perPage));

// Fetch clients with tramites count
$sql = "SELECT c.*, COUNT(t.id) AS total_tramites
        FROM clientes c
        LEFT JOIN tramites t ON c.id = t.cliente_id
        $where
        GROUP BY c.id
        ORDER BY c.created_at DESC
        LIMIT $perPage OFFSET $offset";
$stmt = $db->prepare($sql);
$stmt->execute($params);
$clientes = $stmt->fetchAll();
?>

<div class="admin-content__header">
    <h1><i class="fas fa-users"></i> Clientes</h1>
    <p>Gesti&oacute;n de clientes registrados</p>
</div>

<!-- Toolbar: Search + New Client -->
<div class="toolbar">
    <div class="toolbar__left">
        <form method="GET" class="search-bar" action="clientes.php">
            <i class="fas fa-search search-bar__icon"></i>
            <input type="text" name="q" class="search-bar__input" placeholder="Buscar por nombre, tel&eacute;fono o email..." value="<?= htmlspecialchars($q) ?>">
        </form>
        <?php if ($q !== ''): ?>
            <a href="clientes.php" class="btn btn--sm btn--secondary">
                <i class="fas fa-times"></i> Limpiar
            </a>
        <?php endif; ?>
    </div>
    <div class="toolbar__right">
        <a href="cliente-detalle.php" class="btn btn--primary">
            <i class="fas fa-plus"></i> Nuevo Cliente
        </a>
    </div>
</div>

<!-- Clients Table -->
<div class="card">
    <div class="card__body">
        <?php if (empty($clientes)): ?>
            <div class="table-empty">
                <i class="fas fa-users"></i>
                <p><?= $q !== '' ? 'No se encontraron clientes con esa b&uacute;squeda.' : 'No hay clientes registrados a&uacute;n.' ?></p>
                <?php if ($q !== ''): ?>
                    <a href="clientes.php" class="btn btn--sm btn--outline">Ver todos</a>
                <?php endif; ?>
            </div>
        <?php else: ?>
            <div class="table-responsive">
                <table class="admin-table">
                    <thead>
                        <tr>
                            <th>Nombre</th>
                            <th>Tel&eacute;fono</th>
                            <th>Email</th>
                            <th>Tr&aacute;mites</th>
                            <th>Fecha Registro</th>
                            <th>Acci&oacute;n</th>
                        </tr>
                    </thead>
                    <tbody>
                        <?php foreach ($clientes as $c): ?>
                        <tr>
                            <td><strong><?= htmlspecialchars($c['nombre']) ?></strong></td>
                            <td><?= htmlspecialchars($c['telefono'] ?: '-') ?></td>
                            <td><?= htmlspecialchars($c['email'] ?: '-') ?></td>
                            <td>
                                <span class="badge badge--info"><?= (int)$c['total_tramites'] ?></span>
                            </td>
                            <td><?= date('d/m/Y', strtotime($c['created_at'])) ?></td>
                            <td>
                                <a href="cliente-detalle.php?id=<?= (int)$c['id'] ?>" class="btn btn--sm btn--primary">
                                    <i class="fas fa-eye"></i> Ver
                                </a>
                            </td>
                        </tr>
                        <?php endforeach; ?>
                    </tbody>
                </table>
            </div>

            <!-- Pagination -->
            <?php if ($totalPages > 1): ?>
            <div class="pagination">
                <?php
                $queryParams = $q !== '' ? '&q=' . urlencode($q) : '';
                ?>
                <a href="?page=1<?= $queryParams ?>" class="pagination__link <?= $page <= 1 ? 'pagination__link--disabled' : '' ?>">
                    <i class="fas fa-angle-double-left"></i>
                </a>
                <a href="?page=<?= $page - 1 ?><?= $queryParams ?>" class="pagination__link <?= $page <= 1 ? 'pagination__link--disabled' : '' ?>">
                    <i class="fas fa-angle-left"></i>
                </a>

                <?php
                $start = max(1, $page - 2);
                $end = min($totalPages, $page + 2);
                for ($i = $start; $i <= $end; $i++):
                ?>
                <a href="?page=<?= $i ?><?= $queryParams ?>" class="pagination__link <?= $i === $page ? 'pagination__link--active' : '' ?>">
                    <?= $i ?>
                </a>
                <?php endfor; ?>

                <a href="?page=<?= $page + 1 ?><?= $queryParams ?>" class="pagination__link <?= $page >= $totalPages ? 'pagination__link--disabled' : '' ?>">
                    <i class="fas fa-angle-right"></i>
                </a>
                <a href="?page=<?= $totalPages ?><?= $queryParams ?>" class="pagination__link <?= $page >= $totalPages ? 'pagination__link--disabled' : '' ?>">
                    <i class="fas fa-angle-double-right"></i>
                </a>

                <span class="pagination__info">
                    P&aacute;gina <?= $page ?> de <?= $totalPages ?> (<?= $totalClientes ?> clientes)
                </span>
            </div>
            <?php endif; ?>
        <?php endif; ?>
    </div>
</div>

<?php require_once __DIR__ . '/includes/admin-footer.php'; ?>