v1.0.0 - Initial backup

api/validate-coupon.php

@@ -0,0 +1,59 @@
+<?php
+/**
+ * Tom's Java Jive - Coupon Validation API
+ */
+
+header('Content-Type: application/json');
+
+require_once __DIR__ . '/../includes/functions.php';
+
+if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
+    jsonResponse(['error' => 'Method not allowed'], 405);
+}
+
+$input = json_decode(file_get_contents('php://input'), true);
+$code = strtoupper(trim($input['code'] ?? ''));
+$subtotal = floatval($input['subtotal'] ?? 0);
+
+if (empty($code)) {
+    jsonResponse(['error' => 'Coupon code required'], 400);
+}
+
+$coupon = db()->fetch(
+    "SELECT * FROM coupons WHERE code = :code AND is_active = 1",
+    ['code' => $code]
+);
+
+if (!$coupon) {
+    jsonResponse(['error' => 'Invalid coupon code']);
+}
+
+// Check if expired
+if ($coupon['expires_at'] && strtotime($coupon['expires_at']) < time()) {
+    jsonResponse(['error' => 'Coupon has expired']);
+}
+
+// Check if not started yet
+if ($coupon['starts_at'] && strtotime($coupon['starts_at']) > time()) {
+    jsonResponse(['error' => 'Coupon is not yet active']);
+}
+
+// Check usage limit
+if ($coupon['max_uses'] && $coupon['times_used'] >= $coupon['max_uses']) {
+    jsonResponse(['error' => 'Coupon usage limit reached']);
+}
+
+// Check minimum order
+if ($coupon['min_order_amount'] && $subtotal < $coupon['min_order_amount']) {
+    jsonResponse(['error' => 'Minimum order of ' . formatCurrency($coupon['min_order_amount']) . ' required']);
+}
+
+jsonResponse([
+    'valid' => true,
+    'code' => $coupon['code'],
+    'type' => $coupon['discount_type'],
+    'value' => floatval($coupon['discount_value']),
+    'description' => $coupon['discount_type'] === 'percentage' 
+        ? $coupon['discount_value'] . '% off'
+        : formatCurrency($coupon['discount_value']) . ' off'
+]);