#include<WiFi.h>
#include<DHTesp.h>
#include <ThingSpeak.h>
WiFiClient client;
long myChannelNumber =  2652663;
const char * myWriteAPIKey = "8OHCY34S4092SMIM";
int statusCode;
char ssid[]="Wokwi-GUEST";
char pass[]="";
DHTesp SHIP;
TempAndHumidity DATA;
float TEMP,HUMI;
int DIST;
int RED=16;
int ORG=17;
int GRE=19;
int TRI=4;
int ECHO=5;


void setup() {
  Serial.begin(115200);
  pinMode(TRI, OUTPUT);
  pinMode(ECHO, INPUT);
  pinMode(RED, OUTPUT);
  pinMode(ORG, OUTPUT);
  pinMode(GRE, OUTPUT);
  SHIP.setup(18,DHTesp::DHT22);
  ThingSpeak.begin(client);
  WiFi.mode(WIFI_STA);
}
int FIND_DIST(){
  digitalWrite(TRI, HIGH);
  delay(1000);
  digitalWrite(TRI, LOW);
  float a=pulseIn(ECHO,HIGH);
  return(a*0.034/2);
}
void loop() {
  if(WiFi.status() != WL_CONNECTED)  
  {
  Serial.print("Attempting to connect");
    while(WiFi.status() != WL_CONNECTED)
    {
    WiFi.begin(ssid, pass); 
    Serial.print(".");
    delay(5000);
    }
  Serial.println("\nConnected.");
  }
  DATA=SHIP.getTempAndHumidity();
  TEMP=DATA.temperature;
  HUMI=DATA.humidity;
  DIST=FIND_DIST();
  if((DIST>300)&&(TEMP<30)&&(HUMI>70)){
    digitalWrite(GRE,HIGH);
    digitalWrite(RED,LOW);
    digitalWrite(ORG,LOW);
    Serial.println("You are Safe");
    Serial.println(DIST);
    Serial.println(TEMP);
    Serial.println(HUMI);
  }
  else if((DIST>200)&&(DIST<=300)&&(TEMP>=30)&&(TEMP<70)&&(HUMI>30)&&(HUMI<=70)){
    digitalWrite(ORG, HIGH);
    digitalWrite(RED,LOW);
    digitalWrite(GRE,LOW);
    Serial.println("You are Mod Safe");
    Serial.println(DIST);
    Serial.println(TEMP);
    Serial.println(HUMI);
  }
  else if((DIST<=200)&&(TEMP>=70)&&(HUMI<=30)){
    digitalWrite(RED, HIGH);
    digitalWrite(GRE,LOW);
    digitalWrite(ORG,LOW);
    Serial.println("You are unSafe");
    Serial.println(DIST);
    Serial.println(TEMP);
    Serial.println(HUMI);
  }
  else{
    digitalWrite(RED,LOW);
    digitalWrite(ORG,LOW);
    digitalWrite(GRE,LOW);
    Serial.println("You are Danger");
    Serial.println(DIST);
    Serial.println(TEMP);
    Serial.println(HUMI);
  }
  ThingSpeak.setField(1, DIST);
  ThingSpeak.setField(2, TEMP);
  ThingSpeak.setField(3, HUMI);

  statusCode = ThingSpeak.writeFields(myChannelNumber,myWriteAPIKey);

if(statusCode == 200) { //successful writing code
Serial.println("Channel update successful.");
}
else {
Serial.println("Problem Writing data. HTTP error code :" +
String(statusCode));
}
}