<?php
session_start();
include '../config.php';

header('Content-Type: application/json');

if (!isset($_SESSION['id_pembeli'])) {
    echo json_encode(['success' => false, 'message' => 'Akses ditolak']);
    exit;
}

// Get JSON data
$data = json_decode(file_get_contents('php://input'), true);
$total_harga = isset($data['total_harga']) ? floatval($data['total_harga']) : 0;
$alamat = isset($data['alamat']) ? trim(strtolower($data['alamat'])) : '';

// Normalisasi karakter di alamat untuk pencocokan yang lebih baik
$alamat_normal = str_replace(['.', ',', '-', '_', '/', '\\'], ' ', $alamat);

$ongkos_kirim = 0;
// Cek apakah 'nganjuk' ada di dalam alamat yang sudah dinormalisasi
$is_nganjuk = strpos($alamat_normal, 'nganjuk') !== false;

if ($total_harga > 0) {
    if ($total_harga < 50000) {
        $ongkos_kirim = $is_nganjuk ? 0 : 5000;
    } else if ($total_harga > 50000 && $total_harga < 200000) {
        $ongkos_kirim = $is_nganjuk ? 3000 : 7000;
    } else if ($total_harga > 200000 && $total_harga < 500000) {
        $ongkos_kirim = $is_nganjuk ? 5000 : 10000;
    } else { // total_harga >= 200000
        $ongkos_kirim = 12000;
    }
} else {
    $ongkos_kirim = 0;
}

echo json_encode([
    'success' => true,
    'ongkos_kirim' => $ongkos_kirim,
    'message' => 'Berhasil menghitung ongkos kirim'
]);
?>