<?php
require_once($_SERVER['DOCUMENT_ROOT']."/config.php");

$apartment_id = $_POST['apartment_id'];
$user_id = $_SESSION['id'];
$calculation_info = ['P' => 0];
$catalog_id = $_POST['catalog_id'];
$sql = "SELECT new_installment_price, calculation_data FROM sended_pdf_complexes WHERE id_agent = '$user_id' AND id_object = '$apartment_id' AND sent_catalog_id = '$catalog_id'";
$result = mysql_query($sql);
$data = mysql_fetch_assoc($result);

if (!empty($data['calculation_data'])) {
    $decoded = json_decode($data['calculation_data'], true);
    if (is_array($decoded)) {
        $calculation_info = $decoded;
    }
}

if (!empty($data['new_installment_price'])) {
    $calculation_info['P'] = $data['new_installment_price'];
} else {
    $sql = "SELECT installment_price FROM complex_rooms WHERE id = '$apartment_id'";
    $result = mysql_query($sql);
    $fallback = mysql_fetch_assoc($result);
    if (!empty($fallback['installment_price'])) {
        $calculation_info['P'] = $fallback['installment_price'];
    }
}

echo json_encode(['success' => true, 'data' => $calculation_info]);