import 'package:flutter_secure_storage/flutter_secure_storage.dart';

const _kBase = 'odoo_base';
const _kDb = 'odoo_db';
const _kUser = 'odoo_user';
const _kPass = 'odoo_pass';
const _kUid = 'odoo_uid';

/// Menyimpan konfigurasi login (url, db, user, password) secara aman
/// + menyediakan OdooClient terautentikasi.
class Session {
  static const _storage = FlutterSecureStorage();

  static Future<void> saveUid(int uid) async {
    await _storage.write(key: _kUid, value: uid.toString());
  }

  static Future<void> save(String baseUrl, String db, String user, String pass) async {
    await _storage.write(key: _kBase, value: baseUrl);
    await _storage.write(key: _kDb, value: db);
    await _storage.write(key: _kUser, value: user);
    await _storage.write(key: _kPass, value: pass);
  }

  static Future<({String base, String db, String user, String pass})?> load() async {
    final base = await _storage.read(key: _kBase);
    final db = await _storage.read(key: _kDb);
    final user = await _storage.read(key: _kUser);
    final pass = await _storage.read(key: _kPass);
    if (base == null || user == null || pass == null) return null;
    return (base: base, db: db ?? 'odoo', user: user, pass: pass);
  }

  static Future<void> clear() async {
    // Hapus sesi (user & pass), tapi sisakan URL (_kBase) agar login berikutnya mudah
    await _storage.delete(key: _kUser);
    await _storage.delete(key: _kPass);
  }

  static Future<String?> readLastUrl() async {
    return _storage.read(key: _kBase);
  }

  static Future<String> readBase() async {
    final base = await _storage.read(key: _kBase);
    if (base == null) throw Exception('URL tidak ditemukan');
    return base;
  }

  static Future<String?> readDb() async {
    return _storage.read(key: _kDb);
  }

  static Future<String?> readUser() async {
    return _storage.read(key: _kUser);
  }

  static Future<String?> readPass() async {
    return _storage.read(key: _kPass);
  }

  static Future<int?> readUid() async {
    final uid = await _storage.read(key: _kUid);
    if (uid == null) return null;
    return int.tryParse(uid);
  }
}