Adds card number api

api/cardnumber.php

@@ -0,0 +1,88 @@
+<?php
+require_once("api_functions.php");
+require_once("../includes/DB.php");
+
+
+header('Access-Control-Allow-Origin: *', true); // Come fetch!
+
+/* Connect to database */
+$conn = get_db_connection(DB_FETCHMODE_ORDERED);
+
+
+if( !isset($_GET['apikey']) ) {
+    set_response_code(400);
+    echo json_encode(array('error' => "Missing param apikey."));
+    die();
+}
+/* Valid API KEY (defined in credentials.php) ? */
+if( $_GET['apikey'] !== USER_API_KEY && $_GET['apikey'] !== USER_API_KEY_KASSA ) {
+    set_response_code(400);
+    echo json_encode(array('error' => "Invalid apikey: '".$_GET['apikey']."'."));
+    die();
+}
+
+/* Validate params */
+if(!isset($_GET['q'])) {
+    set_response_code(400);
+    echo json_encode(array('error' => "Missing param q"));
+    die();
+}
+
+$card_number = $_GET['q'];
+
+if( !is_numeric($card_number) ) {
+    set_response_code(400);
+    echo json_encode(array('error' => "Value q must be numeric: '".$card_number."'"));
+    die();
+}
+
+$card_number = $conn->quoteSmart($card_number);
+
+// Search query
+$sql = "
+  SELECT mc.userId FROM din_membercard AS mc
+  LEFT JOIN din_user AS u ON mc.userId=u.id
+  WHERE mc.id=$card_number";
+error_reporting(0);
+
+$res = $conn->getAll($sql);
+
+if( DB::isError($res) ) {
+    set_response_code(500);
+    echo json_encode(array('error' => $res->message));
+    die();
+}
+
+/* Invalid card number*/
+if(count($res) === 0) {
+    echo json_encode(array(
+        'user' => NULL,
+        'valid' => false
+    ));
+    die();
+}
+
+$user_id = $res[0][0];
+/* Free card_number? */
+if($user_id === "") {
+    echo json_encode(array(
+        'user' => NULL,
+        'valid' => true
+    ));
+    die();
+}
+
+/* Existing user with card_number. */
+try{
+    $user_data = get_user_data($user_id, $conn);
+} catch(Exception $e) {
+    set_response_code(500);
+    echo json_encode(array('error' => $e->getMessage()));
+    die();
+}
+echo json_encode(array(
+    'user' => $user_data,
+    'valid' => $res !== NULL
+));
+
+?>