import 'package:flutter/material.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';

class NavigationStep {
  final String instruction;
  final String maneuver;
  final double distance;
  final String duration;
  final LatLng startLocation;
  final LatLng endLocation;
  final String htmlInstructions;

  NavigationStep({
    required this.instruction,
    required this.maneuver,
    required this.distance,
    required this.duration,
    required this.startLocation,
    required this.endLocation,
    required this.htmlInstructions,
  });

  factory NavigationStep.fromJson(Map<String, dynamic> json) {
    return NavigationStep(
      instruction: json['html_instructions'] ?? '',
      maneuver: json['maneuver'] ?? 'straight',
      distance: (json['distance']['value'] ?? 0).toDouble(),
      duration: json['duration']['text'] ?? '',
      startLocation: LatLng(
        json['start_location']['lat'].toDouble(),
        json['start_location']['lng'].toDouble(),
      ),
      endLocation: LatLng(
        json['end_location']['lat'].toDouble(),
        json['end_location']['lng'].toDouble(),
      ),
      htmlInstructions: json['html_instructions'] ?? '',
    );
  }

  // Get clean instruction text (remove HTML tags)
  String get cleanInstruction {
    return instruction
        .replaceAll(RegExp(r'<[^>]*>'), '')
        .replaceAll('&nbsp;', ' ');
  }

  // Get instruction icon based on maneuver
  IconData get instructionIcon {
    switch (maneuver.toLowerCase()) {
      case 'turn-left':
        return Icons.turn_left;
      case 'turn-right':
        return Icons.turn_right;
      case 'turn-slight-left':
        return Icons.turn_slight_left;
      case 'turn-slight-right':
        return Icons.turn_slight_right;
      case 'turn-sharp-left':
        return Icons.turn_sharp_left;
      case 'turn-sharp-right':
        return Icons.turn_sharp_right;
      case 'uturn-left':
      case 'uturn-right':
        return Icons.u_turn_left;
      case 'straight':
        return Icons.straight;
      case 'ramp-left':
        return Icons.ramp_left;
      case 'ramp-right':
        return Icons.ramp_right;
      case 'merge':
        return Icons.merge;
      case 'fork-left':
      case 'fork-right':
        return Icons.call_split;
      case 'ferry':
        return Icons.directions_boat;
      case 'roundabout-left':
      case 'roundabout-right':
        return Icons.roundabout_left;
      default:
        return Icons.navigation;
    }
  }
}