#include <DHTesp.h>
#include <ThingSpeak.h>
#include <WiFi.h>
WiFiClient client;
 long myChannelNumber =2614431;
const char * myWriteAPIKey = "0H8720BES4HHEBIF";
int statusCode;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";
int trig =12;
int echo =25;
float green =14;
float orange =27;
float red =26;
float distance;
DHTesp bhuvanesh;
TempAndHumidity data;

void setup() {
  ThingSpeak.begin(client);
 Serial.begin(115200);
 bhuvanesh.setup(18, DHTesp:: DHT22);
  WiFi.mode(WIFI_STA);
 pinMode(trig, OUTPUT);
 pinMode(echo, INPUT);
 pinMode(green, OUTPUT);
 pinMode (orange, OUTPUT);
 pinMode(red,OUTPUT);
 tone(22, OUTPUT);
}
int ultraperformance(){
 digitalWrite(trig, LOW);
 delay(100);
 digitalWrite(trig, HIGH);
 delay(100);
 digitalWrite(trig, LOW);
 distance=pulseIn(echo,HIGH);
 return(distance*0.034/2)+1;
 }


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 = bhuvanesh.getTempAndHumidity();
  Serial.println("Humi : " + String(data.humidity));
  Serial.println("Temp : " + String(data.temperature));
  Serial.println("-----------------");
  delay(6000);

 
 float actual_distance=ultraperformance();
 Serial.println(actual_distance);
  if(WiFi.status() == WL_CONNECTED){

 if (actual_distance>=300 && data.humidity>70 && data.temperature<30) {
 digitalWrite(green, HIGH);
 digitalWrite(orange, LOW);
 digitalWrite(red, LOW);
 Serial.println("you are safe");
 tone(22,LOW);
 }

 else if(actual_distance>=200 && actual_distance<300 && data.humidity<=70 && data.temperature>=30 && data.humidity>=30 && data.temperature<=70){
 digitalWrite(orange ,HIGH);
 digitalWrite(green, LOW);
 digitalWrite(red, LOW);
 tone(22,LOW);
 Serial.println("you are unsafe");
 }

 else if(actual_distance>=0 && actual_distance<200 && data.humidity<30 && data.temperature>70){
 digitalWrite(red ,HIGH);
 digitalWrite(orange , LOW);
 digitalWrite(green, LOW);
 tone (22,10000);
 Serial.println("you are in danger");
}

 else{
 digitalWrite(green, LOW);
 digitalWrite(orange, LOW);
 digitalWrite(red, LOW);
 tone (22,10000);
 Serial.println("error temperature");
 }
 ThingSpeak.setField(3, actual_distance);
  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));
   }
  delay(10);

  ThingSpeak.setField(1, data.temperature);
  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));
   }
  delay(10);

ThingSpeak.setField(2, data.humidity);
  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));
   }
  delay(10);


}
}