@Override
  @SuppressWarnings("empty-statement")
  protected Clan doInBackground() throws Exception {
    if (bestMatch == null) { // use fallBack
      // URL URL = new
      // URL("http://worldoftanks."+gui.getServerRegion()+"/uc/clans/?type=table&offset=0&limit=10&order_by="+this.searchType+"&search="+this.clanTagName+"&echo=2&id=clans_index");
      // TODO: does API support orderBy ?!?
      URL URL =
          new URL(
              "http://worldoftanks."
                  + gui.getServerRegion()
                  + "/uc/clans/api/1.1/?source_token=Intellect_Soft-WoT_Mobile-unofficial_stats&search="
                  + this.fallbackInput.replace(" ", "%20")
                  + "&offset=0&limit=10");
      URLConnection URLConnection = URL.openConnection();
      URLConnection.setRequestProperty("Accept", "application/json, text/javascript, */*; q=0.01");
      URLConnection.setRequestProperty("Accept-Language", "en-us;q=0.5,en;q=0.3");
      URLConnection.setRequestProperty("Accept-Encoding", "paco");
      URLConnection.setRequestProperty("Accept-Charset", "ISO-8859-1,utf-8;q=0.7,*;q=0.7");
      URLConnection.setRequestProperty("Connection", "close");
      URLConnection.setRequestProperty("X-Requested-With", "XMLHttpRequest");
      // timeout after 10 seconds
      URLConnection.setConnectTimeout(10000);

      BufferedReader clanBufferedReader = null;
      StringBuilder data = new StringBuilder(3000);
      try {
        clanBufferedReader =
            new BufferedReader(new InputStreamReader(URLConnection.getInputStream(), "UTF8"));
        for (String line; (line = clanBufferedReader.readLine()) != null; data.append(line)) ;
      } finally {
        if (clanBufferedReader != null) clanBufferedReader.close();
      }

      JsonParser jsonParser = new JsonParser();
      JsonObject json = jsonParser.parse(data.toString()).getAsJsonObject();

      if (!"ok".equalsIgnoreCase(json.get("status").getAsString())) {
        throw new ClanAPIException(json.get("status_code").getAsString(), this.gui);
      }

      JsonArray results = json.get("data").getAsJsonObject().get("items").getAsJsonArray();
      JsonObject json_clan = null;
      for (JsonElement e : results) {
        JsonObject o = e.getAsJsonObject();
        if (fallbackInput.equalsIgnoreCase(o.get(this.searchType).getAsString())) {
          json_clan = o;
          break;
        }
      }
      if (json_clan == null) {
        throw new ClanNotFoundException(this.gui);
      }
      String name = json_clan.get("name").getAsString();
      String tag = json_clan.get("abbreviation").getAsString();
      long ID = json_clan.get("id").getAsLong();
      int member_count = json_clan.get("member_count").getAsInt();
      ImageIcon emblem =
          new ImageIcon(
              new URL("http://worldoftanks.eu" + json_clan.get("clan_emblem_url").getAsString()));
      bestMatch = new PossibleClan(name, tag, ID, member_count, emblem);
    }

    // get provinces
    GetProvinces provinceWorker = new GetProvinces(bestMatch.getID(), this.gui);
    provinceWorker.execute();

    // get members
    // URL = new
    // URL("http://worldoftanks."+gui.getServerRegion()+"/uc/clans/"+clanID+"/members/?type=table&offset=0&limit=100&order_by=name&search=&echo=1&id=clan_members_index");
    URL URL =
        new URL(
            "http://worldoftanks."
                + gui.getServerRegion()
                + "/uc/clans/"
                + bestMatch.getID()
                + "/api/1.1/?source_token=Intellect_Soft-WoT_Mobile-unofficial_stats");
    URLConnection URLConnection = URL.openConnection();
    URLConnection.setRequestProperty("Accept", "application/json, text/javascript, */*; q=0.01");
    URLConnection.setRequestProperty("Accept-Language", "en-us;q=0.5,en;q=0.3");
    URLConnection.setRequestProperty("Accept-Encoding", "paco");
    URLConnection.setRequestProperty("Accept-Charset", "ISO-8859-1,utf-8;q=0.7,*;q=0.7");
    URLConnection.setRequestProperty("Connection", "close");
    URLConnection.setRequestProperty("X-Requested-With", "XMLHttpRequest");
    // timeout after 15 seconds
    URLConnection.setConnectTimeout(15000);

    BufferedReader membersBufferedReader = null;
    StringBuilder members_data = new StringBuilder(10000);
    try {
      membersBufferedReader =
          new BufferedReader(new InputStreamReader(URLConnection.getInputStream(), "UTF8"));
      for (String line;
          (line = membersBufferedReader.readLine()) != null;
          members_data.append(line)) ;
    } finally {
      if (membersBufferedReader != null) membersBufferedReader.close();
    }

    JsonParser jsonParser = new JsonParser();
    JsonObject members_json = jsonParser.parse(members_data.toString()).getAsJsonObject();

    if (!"ok".equalsIgnoreCase(members_json.get("status").getAsString())) {
      throw new ClanAPIException(members_json.get("status_code").getAsString(), this.gui);
    }

    JsonArray members = members_json.get("data").getAsJsonObject().get("members").getAsJsonArray();

    GetPlayerData[] workers = new GetPlayerData[members.size()];
    players = new ArrayList<Player>(members.size());
    for (int i = 0; i < members.size(); i++) {
      JsonObject member = members.get(i).getAsJsonObject();
      workers[i] = new GetPlayerData(member.get("account_id").getAsLong(), this.gui);
      workers[i].execute();
    } // TODO: see if there's some sort of "worker pool" with a getAll() or getFirst()

    // In the meantime see if GetProvinces is ready
    this.provinces = provinceWorker.get();

    ArrayList<Vehicle> vehicles = new ArrayList<Vehicle>(5000);
    long start = System.currentTimeMillis();
    for (GetPlayerData w : workers) {
      Player p = w.get();
      players.add(p);
      vehicles.addAll(p.getVehicles());
      // TODO: update progress bar
      // TODO: sort by tier already here ?!? (implementation details)
    }
    vehicles.trimToSize();
    System.out.printf(
        "Vs:" + vehicles.size() + "\nOverall time: %dms%n", System.currentTimeMillis() - start);
    vehicles = Utils.sortVehiclesByTier(vehicles);
    vehicles = Utils.sortVehiclesByClass(vehicles);
    vehicles = Utils.sortVehiclesByNation(vehicles);

    if (players.size() > 20) { // some small logical optimizations
      double avg_top_eff = 0D, avg_eff = 0D, avg_top_wr = 0D, avg_wr = 0D;
      players = Utils.sortPlayersByEfficiency(players);
      for (int i = 0; i < players.size(); i++) {
        if (i == 20) avg_top_eff = avg_eff / 20D;
        avg_eff += players.get(i).getEfficiency();
      }
      avg_eff /= players.size();

      players = Utils.sortPlayersByWinrate(players);
      for (int i = 0; i < players.size(); i++) {
        if (i == 20) avg_top_wr = avg_wr / 20D;
        avg_wr += players.get(i).getAvg_wr();
      }
      avg_wr /= players.size();

      return new Clan(
          bestMatch.getName(),
          bestMatch.getClanTag(),
          bestMatch.getID(),
          players,
          vehicles,
          avg_wr,
          avg_top_wr,
          avg_eff,
          avg_top_eff,
          bestMatch.getEmblem());
    } else {
      double avg_eff = 0D, avg_wr = 0D; // top=all
      players = Utils.sortPlayersByEfficiency(players);
      for (int i = 0; i < players.size(); i++) {
        avg_eff += players.get(i).getEfficiency();
      }
      avg_eff /= players.size();

      players = Utils.sortPlayersByWinrate(players);
      for (int i = 0; i < players.size(); i++) {
        avg_wr += players.get(i).getAvg_wr();
      }
      avg_wr /= players.size();

      return new Clan(
          bestMatch.getName(),
          bestMatch.getClanTag(),
          bestMatch.getID(),
          players,
          vehicles,
          avg_wr,
          avg_wr,
          avg_eff,
          avg_eff,
          bestMatch.getEmblem());
    }
  }