main.dart

import 'package:flutter/material.dart';
import 'package:flutter_map/flutter_map.dart';
import 'package:latlong2/latlong.dart'; // Import LatLng class from the latlong package
import 'dart:async';
import 'dart:io';
import 'dart:convert';


const String port = "8443";
const String serverURI = "https://127.0.0.1:$port/";
const String mapEndpoint = "update_map";
// NB: if http connection fails, run: adb reverse tcp:8443 tcp:8443
const int fetchInterval = 5;

// main is the entry point for the application, and starts the App() function
void main() {
  runApp(const App());
}

class App extends StatelessWidget {
  const App({super.key});

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      home: DefaultPage(),
    );
  }
}

class DefaultPage extends StatefulWidget {
  const DefaultPage({Key? key}) : super(key: key);

  @override
  _DefaultPageState createState() => _DefaultPageState();
}

// MarkerData holds data for the dynamicllay allocated markers
class MarkerData {
  final LatLng location;
  final double size;
  final Color color;

  MarkerData({required this.location, required this.size, required this.color});
}

// parseMarkerData parses jsonData into an object of type MakerData
List<MarkerData> parseMarkerData(String jsonString) {
  final parsed = json.decode(jsonString);
  return List<MarkerData>.from(parsed.map((data) => MarkerData(
    location: LatLng(data['latitude'], data['longitude']),
    size: data['size'].toDouble(),
    color: parseColor(data['color']),
  )));
}

// parseColor parses the color strings into Colors types
Color parseColor(String colorString) {
  switch (colorString) {
    case 'blue':
      return Colors.blue;
    case 'red':
      return Colors.red;
    case 'green':
      return Colors.green;
    default:
      return Colors.black; // Default color if unrecognized
  }
}