<?php
// api/roads.php  —  GET / POST / DELETE jalan (polyline)
require_once __DIR__ . '/config.php';
$method = $_SERVER['REQUEST_METHOD'];

if ($method === 'GET') {
    $rows = getDB()->query("SELECT * FROM roads ORDER BY created_at DESC")->fetchAll();
    foreach ($rows as &$r) $r['length_m'] = (int)$r['length_m'];
    echo json_encode(['success'=>true,'data'=>$rows]); exit;
}

if ($method === 'POST') {
    $b      = json_decode(file_get_contents('php://input'),true);
    $name   = trim($b['name']   ?? '');
    $status = trim($b['status'] ?? 'kabupaten');
    $len    = (int)($b['length_m'] ?? 0);
    $coords = $b['coords'] ?? '[]';
    $allowed = ['nasional','provinsi','kabupaten'];
    if (!$name){ http_response_code(400); echo json_encode(['error'=>'Nama wajib diisi']); exit; }
    if (!in_array($status,$allowed)) $status='kabupaten';
    $pdo  = getDB();
    $stmt = $pdo->prepare("INSERT INTO roads (name,status,length_m,coords) VALUES (:n,:s,:l,:c)");
    $stmt->execute([':n'=>$name,':s'=>$status,':l'=>$len,':c'=>$coords]);
    $id  = $pdo->lastInsertId();
    $row = $pdo->query("SELECT * FROM roads WHERE id=$id")->fetch();
    $row['length_m']=(int)$row['length_m'];
    http_response_code(201); echo json_encode(['success'=>true,'data'=>$row]); exit;
}

if ($method === 'DELETE') {
    $id=(int)($_GET['id']??0);
    if($id<=0){http_response_code(400);echo json_encode(['error'=>'ID tidak valid']);exit;}
    $stmt=getDB()->prepare("DELETE FROM roads WHERE id=:id");
    $stmt->execute([':id'=>$id]);
    if($stmt->rowCount()===0){http_response_code(404);echo json_encode(['error'=>'Tidak ditemukan']);exit;}
    echo json_encode(['success'=>true,'message'=>'Jalan dihapus']); exit;
}

http_response_code(405); echo json_encode(['error'=>'Method tidak diizinkan']);