<?php
session_start();
header('Content-Type: application/json');
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: POST, OPTIONS');
header('Access-Control-Allow-Headers: Content-Type');

if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') {
    http_response_code(200);
    exit();
}

if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
    echo json_encode(['status' => 'error', 'message' => 'Metode tidak diizinkan']);
    exit();
}

require_once 'db_config.php';

$data = json_decode(file_get_contents('php://input'), true);
$username = isset($data['username']) ? trim($data['username']) : '';
$password = isset($data['password']) ? $data['password'] : '';

if (empty($username) || empty($password)) {
    echo json_encode(['status' => 'error', 'message' => 'Username dan password wajib diisi']);
    exit();
}

$stmt = $conn->prepare("SELECT id, username, password, nama_lengkap, role FROM users WHERE username = ?");
$stmt->bind_param('s', $username);
$stmt->execute();
$result = $stmt->get_result();

if ($result->num_rows === 0) {
    echo json_encode(['status' => 'error', 'message' => 'Username atau password salah']);
    exit();
}

$user = $result->fetch_assoc();

if (!password_verify($password, $user['password'])) {
    echo json_encode(['status' => 'error', 'message' => 'Username atau password salah']);
    exit();
}

// Set session
$_SESSION['gis_logged_in'] = true;
$_SESSION['user_id'] = $user['id'];
$_SESSION['username'] = $user['username'];
$_SESSION['nama_lengkap'] = $user['nama_lengkap'];
$_SESSION['role'] = $user['role'];

echo json_encode([
    'status' => 'success',
    'message' => 'Login berhasil',
    'user' => [
        'username' => $user['username'],
        'nama_lengkap' => $user['nama_lengkap'],
        'role' => $user['role']
    ]
]);

$stmt->close();
$conn->close();
?>