#include <SoftwareSerial.h>
#define DEBUG true
int connectionId;
SoftwareSerial esp32(7, 6);
String espmode = "3";
String SSid = "BSJ";//enter ur SSID (service set ID) here
String password = "batool0005"; //password
void wifisetup(String mode, String ssid, String pass);
void st_server(String HI, String Data, String HIcolor);


void setup() {
  pinMode(12, OUTPUT);
  Serial.begin(9600);
  esp32.begin(9600);
  digitalWrite(10, LOW);
  delay(1000);
  wifisetup(espmode, SSid, password);
  delay(1000);
  digitalWrite(10, HIGH);
}

String heading = "Internet of Things";
String color = "blue";
String dataSend = "hello world";

void loop() {
  digitalWrite(10, LOW);
  delay(1000);
  st_server(heading, dataSend, color);
  delay(1000);
  digitalWrite(10, HIGH);
}

//functions
//1 - send data
String sendData(String command, const int timeout, boolean debug){
  String response = "";
  esp32.print(command);
  long int time = millis();
  while((time + timeout) > millis()){
    while(esp32.available()){
      char c = esp32.read();
      response += c;
    }
  }

  if(debug){
    Serial.print(response);
  }
  return response;
}

//2 - connectivity
void wifisetup(String mode, String ssid, String pass){
  sendData("AT\r\n", 2000, debug);//reset
  String mode0 = "AT+CWMODE= ";
  mode0 += mode;
  mode0 += "\r\n";
  sendData(mode0, 2000, debug);
  String ssidset = "AT+CWJAP=\ ";
  ssidset += ssid;
  ssidset +="\","\";
  ssidset += pass;
  ssidset += "\";
  ssidset +="\r\n";

  sendData(ssid, 10000, debug);
  delay(900);
  sendData("AT+CIFSR \r\n", 4000, debug);
  sendData("AT+CIPMUX=I \r\n", 2000, debug);
  sendData("AT+CIPSERVER=I,80 \r\n", 2000, debug);
  sendData("AT+CIPSTO=1000 \r\n", 1000, debug);
  return;
}