import 'package:flutter/foundation.dart';
import 'package:rasadyar_core/core.dart';

class ConditionEvaluator {
  static bool check(String? condition, RxMap<String, dynamic>? state) {
    if (condition == null || condition.isEmpty) return true;
    if (state == null) {
      return condition.contains('activeStepperIndex == 0');
    }

    try {
      if (condition.contains(' == ')) {
        final parts = condition.split(' == ');
        if (parts.length != 2) return true;

        final key = parts[0].trim();
        var expectedValue = parts[1].trim();

        // Remove quotes
        if ((expectedValue.startsWith("'") && expectedValue.endsWith("'")) ||
            (expectedValue.startsWith('"') && expectedValue.endsWith('"'))) {
          expectedValue = expectedValue.substring(1, expectedValue.length - 1);
        }

        final actualValue = state[key];

        if (actualValue == null) {
          if (key == 'activeStepperIndex' && expectedValue == '0') return true;
          return false;
        }

        // Handle numeric comparison if possible
        final expectedInt = int.tryParse(expectedValue);
        if (expectedInt != null) {
          if (actualValue is int) return actualValue == expectedInt;
          if (actualValue is String) return int.tryParse(actualValue) == expectedInt;
        }

        return actualValue.toString() == expectedValue;
      }
      return true;
    } catch (e) {
      debugPrint('Error parsing condition: $e');
      return false;
    }
  }

  /// Extracts step index without using expensive RegExp in a loop if possible,
  /// or at least centralizes the logic.
  static int? extractStepIndex(String? condition) {
    if (condition == null || !condition.contains('activeStepperIndex')) return null;

    try {
      final parts = condition.split(' == ');
      if (parts.length == 2 && parts[0].trim() == 'activeStepperIndex') {
        return int.tryParse(parts[1].trim());
      }
    } catch (_) {}
    return null;
  }
}