308 lines
10 KiB
PHP
308 lines
10 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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try {
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if (function_exists('db')) {
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$pdo = db();
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$stmt = $pdo->query("SELECT * FROM company_settings LIMIT 1");
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$settings = $stmt->fetch(PDO::FETCH_ASSOC);
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}
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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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* Calculate the current price of a product considering promotions.
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*
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* @param array|object $product The product data from DB.
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* @return float The effective price.
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*/
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function get_product_price($product) {
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$product = (array)$product;
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$price = (float)$product['price'];
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$today = date('Y-m-d');
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$promo_active = !empty($product['promo_discount_percent']) &&
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!empty($product['promo_date_from']) &&
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!empty($product['promo_date_to']) &&
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$today >= $product['promo_date_from'] &&
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$today <= $product['promo_date_to'];
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if ($promo_active) {
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$discount = (float)$product['promo_discount_percent'];
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$price = $price * (1 - ($discount / 100));
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}
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return $price;
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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_with_limit = $query . " LIMIT " . (int)$limit . " OFFSET " . (int)$offset;
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$stmt = $pdo->prepare($query_with_limit);
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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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$limits = [20, 50, 100, -1];
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echo '<div class="d-flex justify-content-between align-items-center mb-0 bg-white p-2 rounded flex-wrap gap-2">';
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echo '<div class="d-flex align-items-center flex-wrap gap-3">';
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echo '<form method="GET" class="d-flex align-items-center mb-0">';
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// Preserve other GET params
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foreach ($params as $key => $val) {
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if ($key !== 'limit') echo '<input type="hidden" name="'.htmlspecialchars((string)$key).'" value="'.htmlspecialchars((string)$val).'">';
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}
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echo '<small class="me-2 text-muted fw-bold">SHOW:</small>';
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echo '<select name="limit" class="form-select form-select-sm" style="width: auto;" 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 border-start ps-3">Total: <strong>' . $pagination['total_rows'] . '</strong> items</span>';
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// Optional Total Amount (Sum)
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if (isset($pagination['total_amount_sum'])) {
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echo '<span class="text-success small border-start ps-3">Total Sum: <strong class="fs-5">' . format_currency($pagination['total_amount_sum']) . '</strong></span>';
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}
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if ($total_pages > 0) {
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echo '<span class="text-muted small border-start ps-3">Page <strong>' . $page . '</strong> of <strong>' . $total_pages . '</strong></span>';
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}
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echo '</div>';
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// Pagination Links
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if ($total_pages > 1) {
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echo '<nav aria-label="Page navigation">';
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echo '<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' aria-label='Previous'><span aria-hidden='true'>«</span></a></li>";
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// Logic to show limited page numbers with ellipsis
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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 - 3; $i <= $page + 3; $i++) {
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if ($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' aria-label='Next'><span aria-hidden='true'>»</span></a></li>";
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echo '</ul></nav>';
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}
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echo '</div>';
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}
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/**
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* Auth functions
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*/
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function init_session() {
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if (session_status() === PHP_SESSION_NONE) {
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session_start();
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}
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}
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function login_user($username, $password) {
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$pdo = db();
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$stmt = $pdo->prepare("SELECT u.*, g.name as group_name, g.permissions
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FROM users u
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LEFT JOIN user_groups g ON u.group_id = g.id
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WHERE u.username = ? AND u.is_active = 1
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LIMIT 1");
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$stmt->execute([$username]);
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$user = $stmt->fetch(PDO::FETCH_ASSOC);
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if ($user && password_verify($password, $user['password'])) {
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init_session();
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unset($user['password']); // Don't store hash in session
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$_SESSION['user'] = $user;
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return true;
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}
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return false;
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}
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function logout_user() {
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init_session();
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unset($_SESSION['user']);
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session_destroy();
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}
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function get_logged_user() {
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init_session();
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return $_SESSION['user'] ?? null;
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}
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function require_login() {
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if (!get_logged_user()) {
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header('Location: /login.php');
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exit;
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}
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}
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function has_permission($permission) {
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$user = get_logged_user();
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if (!$user) return false;
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$userPermissions = $user['permissions'] ?? '';
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// Global bypass for super admins
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if ($userPermissions === 'all') return true;
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$perms = explode(',', $userPermissions);
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return in_array($permission, $perms);
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}
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function require_permission($permission) {
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require_login();
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if (!has_permission($permission)) {
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http_response_code(403);
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echo "Access Denied: You don't have permission to access this page.";
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exit;
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}
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}
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/**
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* Get the base URL of the application.
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*
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* @return string The base URL.
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*/
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function get_base_url() {
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$protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
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$domainName = $_SERVER['HTTP_HOST'];
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// Remove admin/ if we are in it
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$script_dir = dirname($_SERVER['SCRIPT_NAME']);
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$script_dir = str_replace(['/admin', '/api'], '', $script_dir);
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if ($script_dir === '/') $script_dir = '';
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return $protocol . $domainName . $script_dir . '/';
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}
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