<?php
// ============================================================
// api/auth.php — Login / Logout / Session check
// ============================================================
require_once __DIR__ . '/config.php';

$method = $_SERVER['REQUEST_METHOD'];
$action = getParam('action', 'login');

if ($method === 'POST' && $action === 'login') {
    $data = body();
    $username = trim($data['username'] ?? '');
    $password = $data['password'] ?? '';

    if (!$username || !$password) jsonError('Username dan password wajib diisi.');

    $db = getDB();
    $stmt = $db->prepare("SELECT * FROM users WHERE username = ? AND aktif = 1 LIMIT 1");
    $stmt->execute([$username]);
    $user = $stmt->fetch();

    if (!$user || !password_verify($password, $user['password'])) {
        jsonError('Username atau password salah.', 401);
    }

    $_SESSION['user'] = [
        'id'       => $user['id'],
        'username' => $user['username'],
        'role'     => $user['role'],
        'jabatan'  => $user['jabatan'],
        'can_edit' => (bool)$user['can_edit'],
        'is_admin' => (bool)$user['is_admin'],
        'is_wali'  => (bool)$user['is_wali'],
    ];

    jsonOk($_SESSION['user'], 'Login berhasil');
}

if ($method === 'POST' && $action === 'logout') {
    session_destroy();
    jsonOk(null, 'Logout berhasil');
}

if ($method === 'GET' && $action === 'check') {
    if (!empty($_SESSION['user'])) {
        jsonOk($_SESSION['user'], 'Session aktif');
    }
    jsonError('Tidak terautentikasi', 401);
}

jsonError('Method tidak valid', 405);