import 'package:odoo_rpc/odoo_rpc.dart';

class OdooService {
  static final OdooService _instance = OdooService._internal();
  factory OdooService() => _instance;
  OdooService._internal();

  OdooClient? client;

  void connect(String url) {
    client = OdooClient(url);
  }

  Future<OdooSession> login(String db, String username, String password) async {
    if (client == null) throw Exception("Connect to Odoo first");
    return await client!.authenticate(db, username, password);
  }

  Future<List<dynamic>> getLoyaltyCards(int partnerId) async {
    if (client == null) throw Exception("Connect to Odoo first");
    
    // In Odoo 19, you might need to adjust the exact fields and model name 
    // depending on the installed modules (e.g. 'loyalty.card').
    return await client!.callKw({
      'model': 'loyalty.card',
      'method': 'search_read',
      'args': [
        [['partner_id', '=', partnerId]],
      ],
      'kwargs': {'fields': ['points', 'program_id', 'code']}
    }) as List<dynamic>;
  }

  /// Fetch public branch information using our secure Odoo endpoint
  /// This completely isolates the Admin API Key from the Flutter Source Code!
  static Future<List<dynamic>> getPublicBranches() async {
    final tempClient = OdooClient('https://erp.mapan.co.id');
    try {
      final res = await tempClient.callRPC(
        '/api/loyalty/branches',
        'call',
        {}
      );
      if (res != null && res['status'] == 'success') {
        return res['data'] as List<dynamic>;
      } else {
        throw Exception(res?['message'] ?? 'Failed to load branches');
      }
    } catch (e) {
      rethrow;
    } finally {
      tempClient.close();
    }
  }
}