Simple dart based command line app for looking up Destiny 2 player glory on consoles

glory.dart

//Copyright 2019 Mike Chambers
//Released under an MIT License
//https://opensource.org/licenses/MIT

//usage : dart glory.dart platform[xbox|psn] gamertag
//example : dart glory.dart xbox mesh

import 'dart:convert';
import 'dart:io';

//insert your own key from
//https://www.bungie.net/developer 
final String _apiKey = "";
final String _apiBase = "https://www.bungie.net/Platform";

final int xbox = 1;
final int psn = 2;
final int none = 0;

void main(List<String> args) async {

  if(args.length != 2) {
    _displayUsage();
    exit(1);
  }

  String tag = args[1];

  int platformId = _parsePlatform(args[0]);

  if(platformId == none) {
    _displayUsage();
    exit(1);
  }

  int memberId = await _getMemberId(tag, platformId);

  if (memberId == null) {
    print("Gamer tag not found");
    exit(1);
  }

  int glory = await _getGlory(memberId);

  print("$tag : $glory Glory");

  exit(0);
}

int _parsePlatform(String name) {
  name = name.toLowerCase();

  if(name == "xbox") {
    return xbox;
  } else if(name == "psn") {
    return psn;
  }

  return none;
}
void _displayUsage() {
  print("dart glory.dart platform[xbox|psn] gamertag");
}

Future<int> _getGlory(int memberId) async {
  String path = "/Destiny2/1/Profile/$memberId/?components=202";

  Map<String, dynamic> jData = await _callApi(path);

  Map data = jData["Response"]["characterProgressions"]["data"];
  String key = data.keys.first;
  int glory = data[key]["progressions"]["2679551909"]["currentProgress"];
  return glory;
}


Future<int> _getMemberId(String name, int platformId) async {
  String path =
      "/Destiny2/SearchDestinyPlayer/$platformId/${Uri.encodeComponent(name)}/";

  Map jData = await _callApi(path);

  List<dynamic> response = jData["Response"];

  for (Map item in response) {
    if (item["displayName"] == name) {
      return int.parse(item["membershipId"]);
    }
  }
  //user not found
  return null;
}

Future<Map<String, dynamic>> _callApi(String apiPath) async {
  HttpClient client = HttpClient();
  client.connectionTimeout = new Duration(seconds: 10);

  Uri uri = Uri.parse("$_apiBase$apiPath");

  var request = await client.getUrl(uri);
  request.headers.set("X-API-Key", _apiKey);

  HttpClientResponse response = await request.close();

  StringBuffer buffer = new StringBuffer("");

  await for (String b in response.transform(utf8.decoder)) {
    buffer.write(b);
  }

  String body = buffer.toString();

  Map<String, dynamic> jData = json.decode(body);

  return jData;
}