import 'package:get/get.dart';
import 'package:marco/helpers/services/api_service.dart';
import 'package:marco/helpers/services/app_logger.dart';
import 'package:marco/model/expense/expense_list_model.dart';

class ExpenseController extends GetxController {
  final RxList<ExpenseModel> expenses = <ExpenseModel>[].obs;
  final RxBool isLoading = false.obs;
  final RxString errorMessage = ''.obs;

  /// Fetch all expenses from API
  Future<void> fetchExpenses() async {
    isLoading.value = true;
    errorMessage.value = '';

    try {
      final result = await ApiService.getExpenseListApi();

      if (result != null) {
        try {
          // Convert the raw result (List<dynamic>) to List<ExpenseModel>
          final List<ExpenseModel> parsed = List<ExpenseModel>.from(
              result.map((e) => ExpenseModel.fromJson(e)));
          expenses.assignAll(parsed);
          logSafe("Expenses loaded: ${parsed.length}");
        } catch (e) {
          errorMessage.value = 'Failed to parse expenses: $e';
          logSafe("Parse error in fetchExpenses: $e", level: LogLevel.error);
        }
      } else {
        errorMessage.value = 'Failed to fetch expenses from server.';
        logSafe("fetchExpenses failed: null response", level: LogLevel.error);
      }
    } catch (e, stack) {
      errorMessage.value = 'An unexpected error occurred.';
      logSafe("Exception in fetchExpenses: $e", level: LogLevel.error);
      logSafe("StackTrace: $stack", level: LogLevel.debug);
    } finally {
      isLoading.value = false;
    }
  }

  /// Update expense status and refresh the list
  Future<bool> updateExpenseStatus(String expenseId, String statusId) async {
    isLoading.value = true;
    errorMessage.value = '';

    try {
      logSafe("Updating status for expense: $expenseId -> $statusId");
      final success = await ApiService.updateExpenseStatusApi(
        expenseId: expenseId,
        statusId: statusId,
      );

      if (success) {
        logSafe("Expense status updated successfully.");
        await fetchExpenses(); 
        return true;
      } else {
        errorMessage.value = "Failed to update expense status.";
        return false;
      }
    } catch (e, stack) {
      errorMessage.value = 'An unexpected error occurred.';
      logSafe("Exception in updateExpenseStatus: $e", level: LogLevel.error);
      logSafe("StackTrace: $stack", level: LogLevel.debug);
      return false;
    } finally {
      isLoading.value = false;
    }
  }
}