import 'package:flutter/material.dart';

enum RoadAlertCategory {
  police,
  speedCamera,
  accident,
  hazard,
  roadClosure,
  construction,
  traffic,
  other,
}

extension RoadAlertCategoryExtension on RoadAlertCategory {
  String get displayName {
    switch (this) {
      case RoadAlertCategory.police:
        return 'Police';
      case RoadAlertCategory.speedCamera:
        return 'Speed Camera';
      case RoadAlertCategory.accident:
        return 'Accident';
      case RoadAlertCategory.hazard:
        return 'Hazard';
      case RoadAlertCategory.roadClosure:
        return 'Road Closure';
      case RoadAlertCategory.construction:
        return 'Construction';
      case RoadAlertCategory.traffic:
        return 'Traffic Delay';
      case RoadAlertCategory.other:
        return 'Other';
    }
  }

  IconData get icon {
    switch (this) {
      case RoadAlertCategory.police:
        return Icons.local_police;
      case RoadAlertCategory.speedCamera:
        return Icons.camera_alt;
      case RoadAlertCategory.accident:
        return Icons.car_crash;
      case RoadAlertCategory.hazard:
        return Icons.warning_amber;
      case RoadAlertCategory.roadClosure:
        return Icons.do_not_disturb_on;
      case RoadAlertCategory.construction:
        return Icons.engineering;
      case RoadAlertCategory.traffic:
        return Icons.traffic;
      case RoadAlertCategory.other:
        return Icons.report_problem;
    }
  }

  Color get color {
    switch (this) {
      case RoadAlertCategory.police:
        return Colors.blueAccent;
      case RoadAlertCategory.speedCamera:
        return Colors.purpleAccent;
      case RoadAlertCategory.accident:
        return Colors.redAccent;
      case RoadAlertCategory.hazard:
        return Colors.orangeAccent;
      case RoadAlertCategory.roadClosure:
        return Colors.deepOrange;
      case RoadAlertCategory.construction:
        return Colors.amber;
      case RoadAlertCategory.traffic:
        return Colors.yellowAccent;
      case RoadAlertCategory.other:
        return Colors.cyanAccent;
    }
  }
}

enum RoadAlertSeverity { low, medium, high, critical }

enum RoadAlertSourceType { providerReported, userReported }

enum RoadAlertProviderStatus {
  notConfigured,
  configured,
  connected,
  rateLimited,
  authError,
  networkError,
}

class RoadAlert {
  final String id;
  final String providerId;
  final RoadAlertCategory category;
  final double latitude;
  final double longitude;
  final double? heading;
  final String? roadName;
  final String description;
  final DateTime reportedAt;
  final DateTime? expiresAt;
  final DateTime lastUpdated;
  final double? confidence; // 0.0 to 1.0
  final RoadAlertSeverity severity;
  final String source;
  final String? sourceUrl;
  final double? distanceFromUser; // meters
  final RoadAlertSourceType sourceType;

  const RoadAlert({
    required this.id,
    required this.providerId,
    required this.category,
    required this.latitude,
    required this.longitude,
    this.heading,
    this.roadName,
    required this.description,
    required this.reportedAt,
    this.expiresAt,
    required this.lastUpdated,
    this.confidence,
    this.severity = RoadAlertSeverity.medium,
    required this.source,
    this.sourceUrl,
    this.distanceFromUser,
    this.sourceType = RoadAlertSourceType.providerReported,
  });

  RoadAlert copyWith({
    String? id,
    String? providerId,
    RoadAlertCategory? category,
    double? latitude,
    double? longitude,
    double? heading,
    String? roadName,
    String? description,
    DateTime? reportedAt,
    DateTime? expiresAt,
    DateTime? lastUpdated,
    double? confidence,
    RoadAlertSeverity? severity,
    String? source,
    String? sourceUrl,
    double? distanceFromUser,
    RoadAlertSourceType? sourceType,
  }) {
    return RoadAlert(
      id: id ?? this.id,
      providerId: providerId ?? this.providerId,
      category: category ?? this.category,
      latitude: latitude ?? this.latitude,
      longitude: longitude ?? this.longitude,
      heading: heading ?? this.heading,
      roadName: roadName ?? this.roadName,
      description: description ?? this.description,
      reportedAt: reportedAt ?? this.reportedAt,
      expiresAt: expiresAt ?? this.expiresAt,
      lastUpdated: lastUpdated ?? this.lastUpdated,
      confidence: confidence ?? this.confidence,
      severity: severity ?? this.severity,
      source: source ?? this.source,
      sourceUrl: sourceUrl ?? this.sourceUrl,
      distanceFromUser: distanceFromUser ?? this.distanceFromUser,
      sourceType: sourceType ?? this.sourceType,
    );
  }
}