187 lines
6.9 KiB
PHP
187 lines
6.9 KiB
PHP
<?php
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// Function to fetch company settings from DB
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function get_company_settings() {
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static $settings = null;
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if ($settings === null) {
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$pdo = db();
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try {
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$stmt = $pdo->query("SELECT * FROM company_settings LIMIT 1");
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$settings = $stmt->fetch(PDO::FETCH_ASSOC);
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} catch (Exception $e) {
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// Log error or ignore if table doesn't exist yet
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}
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// Default values if no settings found
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if (!$settings) {
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$settings = [
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'company_name' => 'My Restaurant',
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'address' => '123 Food Street',
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'phone' => '555-0199',
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'email' => 'info@restaurant.com',
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'vat_rate' => 0.00,
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'currency_symbol' => '$',
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'currency_decimals' => 2
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];
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}
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}
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return $settings;
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}
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// Function to format currency using settings
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function format_currency($amount) {
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$settings = get_company_settings();
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return $settings['currency_symbol'] . number_format((float)$amount, (int)$settings['currency_decimals']);
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}
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/**
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* Paginate a query result.
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*
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* @param PDO $pdo The PDO connection object.
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* @param string $query The base SQL query (without LIMIT/OFFSET).
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* @param array $params Query parameters.
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* @param int $default_limit Default items per page.
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* @return array Pagination result with keys: data, total_rows, total_pages, current_page, limit.
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*/
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function paginate_query($pdo, $query, $params = [], $default_limit = 20) {
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// Get current page
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$page = isset($_GET['page']) && is_numeric($_GET['page']) ? (int)$_GET['page'] : 1;
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if ($page < 1) $page = 1;
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// Get limit (allow 20, 50, 100, or -1 for all)
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$limit = isset($_GET['limit']) ? (int)$_GET['limit'] : $default_limit;
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// Validate limit, default to 20 if not standard, allow custom if needed but standardizing is safer
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if ($limit != -1 && !in_array($limit, [20, 50, 100])) {
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$limit = $default_limit;
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}
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// If limit is -1, fetch all
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if ($limit == -1) {
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$stmt = $pdo->prepare($query);
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$stmt->execute($params);
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$data = $stmt->fetchAll();
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return [
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'data' => $data,
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'total_rows' => count($data),
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'total_pages' => 1,
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'current_page' => 1,
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'limit' => -1
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];
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}
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// Count total rows using a subquery to handle complex queries safely
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$count_sql = "SELECT COUNT(*) FROM ($query) as count_table";
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$stmt = $pdo->prepare($count_sql);
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$stmt->execute($params);
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$total_rows = $stmt->fetchColumn();
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$total_pages = ceil($total_rows / $limit);
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if ($page > $total_pages && $total_pages > 0) $page = $total_pages;
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// Calculate offset
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$offset = ($page - 1) * $limit;
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if ($offset < 0) $offset = 0;
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// Add LIMIT and OFFSET
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// Note: PDO parameters for LIMIT/OFFSET can be tricky with some drivers, sticking to direct injection for integers is safe here
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$query .= " LIMIT " . (int)$limit . " OFFSET " . (int)$offset;
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$stmt = $pdo->prepare($query);
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$stmt->execute($params);
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$data = $stmt->fetchAll();
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return [
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'data' => $data,
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'total_rows' => $total_rows,
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'total_pages' => $total_pages,
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'current_page' => $page,
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'limit' => $limit
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];
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}
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/**
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* Render pagination controls and limit selector.
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*
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* @param array $pagination The result array from paginate_query.
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* @param array $extra_params Additional GET parameters to preserve.
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*/
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function render_pagination_controls($pagination, $extra_params = []) {
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$page = $pagination['current_page'];
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$total_pages = $pagination['total_pages'];
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$limit = $pagination['limit'];
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// Build query string for limit change
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$params = array_merge($_GET, $extra_params);
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unset($params['page']); // Reset page when limit changes
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// Limit Selector
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$limits = [20, 50, 100, -1];
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echo '<div class="d-flex justify-content-between align-items-center mb-3 bg-white p-2 rounded border">';
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echo '<div class="d-flex align-items-center">';
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echo '<form method="GET" class="d-flex align-items-center mb-0">';
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// Preserve other GET params
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foreach ($params as $key => $val) {
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if ($key !== 'limit') echo '<input type="hidden" name="'.htmlspecialchars($key).'" value="'.htmlspecialchars($val).'">';
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}
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echo '<small class="me-2 text-muted">Show:</small>';
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echo '<select name="limit" class="form-select form-select-sm border-0 bg-light" style="width: auto; font-weight: 500;" onchange="this.form.submit()">';
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foreach ($limits as $l) {
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$label = $l == -1 ? 'All' : $l;
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$selected = $limit == $l ? 'selected' : '';
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echo "<option value='$l' $selected>$label</option>";
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}
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echo '</select>';
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echo '</form>';
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// Total Count
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echo '<span class="text-muted small ms-3 border-start ps-3">Total: <strong>' . $pagination['total_rows'] . '</strong></span>';
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echo '</div>';
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// Pagination Links
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if ($total_pages > 1) {
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echo '<nav><ul class="pagination pagination-sm mb-0">';
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// Previous
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$prev_disabled = $page <= 1 ? 'disabled' : '';
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$prev_page = max(1, $page - 1);
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$url_params = array_merge($params, ['page' => $prev_page, 'limit' => $limit]);
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$prev_url = '?' . http_build_query($url_params);
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echo "<li class='page-item $prev_disabled'><a class='page-link' href='$prev_url'>«</a></li>";
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// Logic to show limited page numbers with ellipsis
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// Always show first, last, current, and surrounding
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$shown_pages = [];
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$shown_pages[] = 1;
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$shown_pages[] = $total_pages;
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for ($i = $page - 2; $i <= $page + 2; $i++) {
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if ($i > 1 && $i < $total_pages) {
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$shown_pages[] = $i;
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}
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}
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sort($shown_pages);
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$shown_pages = array_unique($shown_pages);
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$prev_p = 0;
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foreach ($shown_pages as $p) {
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if ($prev_p > 0 && $p > $prev_p + 1) {
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echo "<li class='page-item disabled'><span class='page-link'>...</span></li>";
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}
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$active = $p == $page ? 'active' : '';
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$url_params = array_merge($params, ['page' => $p, 'limit' => $limit]);
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$url = '?' . http_build_query($url_params);
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echo "<li class='page-item $active'><a class='page-link' href='$url'>$p</a></li>";
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$prev_p = $p;
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}
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// Next
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$next_disabled = $page >= $total_pages ? 'disabled' : '';
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$next_page = min($total_pages, $page + 1);
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$url_params = array_merge($params, ['page' => $next_page, 'limit' => $limit]);
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$next_url = '?' . http_build_query($url_params);
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echo "<li class='page-item $next_disabled'><a class='page-link' href='$next_url'>»</a></li>";
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echo '</ul></nav>';
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}
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echo '</div>';
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} |