<?php
require 'db.php';

header('Content-Type: application/json; charset=utf-8');

if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
    http_response_code(405);
    echo json_encode(['status' => 'error', 'message' => 'Method not allowed.']);
    exit;
}

$id = $_POST['id'] ?? null;
$nama_jalan = $_POST['nama_jalan'] ?? null;
$status_jalan = $_POST['status_jalan'] ?? null;
$panjang_meter = $_POST['panjang_meter'] ?? null;
$koordinat = $_POST['koordinat'] ?? null;

if ($id === null || $nama_jalan === null || $status_jalan === null || $panjang_meter === null || $koordinat === null) {
    http_response_code(400);
    echo json_encode(['status' => 'error', 'message' => 'Missing required fields.']);
    exit;
}

$decoded = json_decode($koordinat, true);
if ($decoded === null) {
    http_response_code(400);
    echo json_encode(['status' => 'error', 'message' => 'Invalid koordinat JSON.']);
    exit;
}

$sql = "UPDATE tb_jalan SET nama_jalan = ?, status_jalan = ?, panjang_meter = ?, koordinat = ? WHERE id = ?";
$stmt = $pdo->prepare($sql);

if ($stmt->execute([$nama_jalan, $status_jalan, (float)$panjang_meter, $koordinat, (int)$id])) {
    echo json_encode(['status' => 'success', 'message' => 'Jalan updated.']);
} else {
    http_response_code(500);
    echo json_encode(['status' => 'error', 'message' => 'Failed to update jalan.']);
}