import 'place_gate.dart';

class PlaceModel {
  final String id;
  final String name;
  final String category;
  final double latitude;
  final double longitude;
  final double elevationMeters; // GPS Altitude AMSL in meters (defaults to 0.0)
  final double? distanceKm;
  final String? address;
  final List<PlaceGate> gates;

  PlaceModel({
    required this.id,
    required this.name,
    required this.category,
    required this.latitude,
    required this.longitude,
    this.elevationMeters = 0.0,
    this.distanceKm,
    this.address,
    this.gates = const [],
  });

  bool get hasGates => gates.isNotEmpty;

  factory PlaceModel.fromJson(Map<String, dynamic> json) {
    final rawElev = json['elevation_meters'] ?? json['elevation'] ?? json['altitude'] ?? 0.0;
    double elev = 0.0;
    if (rawElev is num) {
      elev = rawElev.toDouble();
    } else if (rawElev != null) {
      elev = double.tryParse(rawElev.toString()) ?? 0.0;
    }

    final rawGates = json['gates'];
    List<PlaceGate> parsedGates = [];
    if (rawGates is List) {
      parsedGates = rawGates
          .map((g) => PlaceGate.fromJson(Map<String, dynamic>.from(g)))
          .toList();
    }

    return PlaceModel(
      id: json['id']?.toString() ?? '',
      name: json['name']?.toString() ?? '',
      category: json['category']?.toString() ?? 'other',
      latitude: double.tryParse(json['latitude']?.toString() ?? json['lat']?.toString() ?? '0') ?? 0.0,
      longitude: double.tryParse(json['longitude']?.toString() ?? json['lng']?.toString() ?? '0') ?? 0.0,
      elevationMeters: elev,
      distanceKm: json['distanceKm'] != null
          ? (json['distanceKm'] as num).toDouble()
          : null,
      address: json['address']?.toString() ?? json['neighborhood']?.toString(),
      gates: parsedGates,
    );
  }

  Map<String, dynamic> toJson() {
    return {
      'id': id,
      'name': name,
      'category': category,
      'latitude': latitude,
      'longitude': longitude,
      'elevation_meters': elevationMeters,
      'altitude': elevationMeters,
      if (address != null) 'address': address,
      if (gates.isNotEmpty) 'gates': gates.map((g) => g.toJson()).toList(),
    };
  }
}