const URL = "htgtps://api.ivao.aero/getdata/whazzup/whazzup.txt";
const URL_UNKNOW = "http://www.google.it";
const URL_TEST = "http://159.69.178.177/whazzup.txt";
const URL_TEST_EMPTY = "http://159.69.178.177/whazzup_empty.txt";
const URL_TEST_MALFORMED = "http://159.69.178.177/whazzup_malformed.txt";

app.use(helmet());
app.use(cors());

//  Ivao Section: !GENERAL, !CLIENTS, !SERVERS, !AIRPORTS

// Main page route
app.get('/', (req, res) => {
  res.status(200).send({
    status: 'success',
    code: 200,
    response: {
      message: 'Welcome to ivaoToJson API',
    },
  })
});

app.get('/pilots', function(req, res) {
  let dataToSend = [];

  fetch(URL)
    .then(response => {
      //console.log(response.body._outBuffer.length)
      if (response.body._outBuffer && response.ok) {
        return response.text();
      } else {
        return data = null;

      }
    })
    .then(
      data => {
        //console.log(data)
        if (data !== null) {
          let splitted = data.split('\n');
          let startIndex = splitted.indexOf("!CLIENTS") + 1;
          let endIndex = splitted.indexOf("!AIRPORTS") + 2;
          console.log(startIndex, endIndex)
          if (!startIndex || startIndex === "0") {
            res.send({
              status: 'success',
              code: 200,
              response: {
                message: "Something wrong, malformed file retrived",
              },
            })
            return
          } else {
            let clients = splitted.slice(startIndex, endIndex);
            clients.forEach(line => {
              let fields = line.split(":");
              let temp = {}
              temp.callsign = fields[0];
              temp.vid = fields[1];
              temp.connectionTime = fields[37];
              temp.softwareName = fields[38];
              temp.softwareVersion = fields[39];
              temp.latitiude = fields[5];
              temp.longtitude = fields[6];
              temp.altitude = fields[7];
              temp.groundSpeed = fields[8];
              temp.heading = fields[45];
              temp.onGround = fields[46];
              temp.squawk = fields[17];
              temp.rating = fields[41];
              dataToSend.push(temp);
            })
            res.status(200).send({
              status: 'success',
              code: 200,
              response: {
                message: 'fetch data ok',
                data: dataToSend,
              },
            })
          }

        } else {
          res.send({
            status: "success",
            code: 200,
            response: {
              message: "Response ok, but data not found!"
            }
          })
        }
      })
    .catch(error => {
      console.error('Error: ', error)
      res.send({
        status: "fail",
        code: 400,
        response: {
          message: `${error}, check that you typed the url correctly`
        }
      })
    });
});