/*
  Chat  Server

  A simple server that distributes any incoming messages to all
  connected clients.  To use telnet to  your device's IP address and type.
  You can see the client's input in the serial monitor as well.

  This example is written for a network using WPA encryption. For
  WEP or WPA, change the WiFi.begin() call accordingly.


  Circuit:
   WiFi 101 Shield attached

  created 18 Dec 2009
  by David A. Mellis
  modified 31 May 2012
  by Tom Igoe

*/

#include <SPI.h>
#include <WiFi101_Generic.h>      // https://github.com/khoih-prog/WiFi101_Generic

#include "arduino_secrets.h"
///////please enter your sensitive data in the Secret tab/arduino_secrets.h
char ssid[] = SECRET_SSID;        // your network SSID (name)
char pass[] = SECRET_PASS;    // your network password (use for WPA, or use as key for WEP)

int keyIndex = 0;            // your network key Index number (needed only for WEP)

int status = WL_IDLE_STATUS;

WiFiServer server(23);

bool alreadyConnected = false; // whether or not the client was connected previously

void setup()
{
  //Initialize serial and wait for port to open:
  Serial.begin(115200);

  while (!Serial && millis() < 5000);

  delay(500);

  // check for the presence of the shield:
  if (WiFi.status() == WL_NO_SHIELD)
  {
    Serial.println("WiFi 101 Shield not present");

    // don't continue:
    while (true);
  }

  // attempt to connect to WiFi network:
  while ( status != WL_CONNECTED)
  {
    Serial.print("Attempting to connect to SSID: ");
    Serial.println(ssid);
    // Connect to WPA/WPA2 network. Change this line if using open or WEP network:
    status = WiFi.begin(ssid, pass);

    // wait 10 seconds for connection:
    delay(10000);
  }

  // start the server:
  server.begin();
  // you're connected now, so print out the status:
  printWiFiStatus();
}


void loop()
{
  // wait for a new client:
  WiFiClient client = server.available();


  // when the client sends the first byte, say hello:
  if (client)
  {
    if (!alreadyConnected)
    {
      // clead out the input buffer:
      client.flush();
      Serial.println("We have a new client");
      client.println("Hello, client!");
      alreadyConnected = true;
    }

    if (client.available() > 0)
    {
      // read the bytes incoming from the client:
      char thisChar = client.read();
      // echo the bytes back to the client:
      server.write(thisChar);
      // echo the bytes to the server as well:
      Serial.write(thisChar);
    }
  }
}


void printWiFiStatus()
{
  // print the SSID of the network you're attached to:
  Serial.print("SSID: ");
  Serial.println(WiFi.SSID());

  // print your WiFi 101 Shield's IP address:
  IPAddress ip = WiFi.localIP();
  Serial.print("IP Address: ");
  Serial.println(ip);

  // print the received signal strength:
  long rssi = WiFi.RSSI();
  Serial.print("signal strength (RSSI):");
  Serial.print(rssi);
  Serial.println(" dBm");
}