<?php
include('include/headscript.php');
header('Content-Type: application/json');

$idmescola = isset($_POST['idmescola']) ? (int)$_POST['idmescola'] : 0;
$idsupplier = isset($_POST['idsupplier']) ? (int)$_POST['idsupplier'] : 0;
$supplier_mix_name = trim($_POST['supplier_mix_name'] ?? '');
$lot_code = trim($_POST['lot_code'] ?? '');
$expiry_date = trim($_POST['expiry_date'] ?? '');
$qty = isset($_POST['qty']) ? (float)$_POST['qty'] : 0;

if ($idmescola <= 0 || $idsupplier <= 0 || $supplier_mix_name === '') {
    echo json_encode(['success' => false, 'message' => 'Missing required fields']);
    exit;
}

if ($expiry_date === '') $expiry_date = null;

$db = DBHandlerSelect::getInstance();
$pdo = $db->getConnection();

$stmt = $pdo->prepare("INSERT INTO mescole_supplier_lots
  (idmescola, idsupplier, supplier_mix_name, lot_code, expiry_date, qty)
  VALUES (?, ?, ?, ?, ?, ?)");

$ok = $stmt->execute([
    $idmescola,
    $idsupplier,
    $supplier_mix_name,
    $lot_code !== '' ? $lot_code : null,
    $expiry_date,
    $qty
]);

echo json_encode(['success' => (bool)$ok]);