initial commit

api/invoice_get.php

@@ -0,0 +1,23 @@
+<?php
+header('Content-Type: application/json; charset=utf-8');
+require_once "../config/config.php";
+global $pdo;
+
+try {
+  $id = (int)($_GET['id'] ?? 0);
+  if ($id <= 0) throw new RuntimeException('id fehlt');
+
+  $st = $pdo->prepare("SELECT * FROM invoices WHERE id=:id");
+  $st->execute([':id'=>$id]);
+  $inv = $st->fetch(PDO::FETCH_ASSOC);
+  if (!$inv) throw new RuntimeException('Rechnung nicht gefunden');
+
+  $it = $pdo->prepare("SELECT * FROM invoice_items WHERE invoice_id=:id ORDER BY pos ASC, id ASC");
+  $it->execute([':id'=>$id]);
+  $items = $it->fetchAll(PDO::FETCH_ASSOC);
+
+  echo json_encode(['ok'=>true,'invoice'=>$inv,'items'=>$items], JSON_UNESCAPED_UNICODE);
+} catch (Throwable $e) {
+  http_response_code(400);
+  echo json_encode(['ok'=>false,'error'=>$e->getMessage()], JSON_UNESCAPED_UNICODE);
+}