#include <LiquidCrystal_I2C.h>
#include <DHTesp.h>
#include <WiFi.h>
#include <HTTPClient.h>
String serverName = "https://postman-echo.com/get";
LiquidCrystal_I2C lcd(0x27,16,2);  // set the LCD address to 0x27 for a 16 chars and 2 line display
DHTesp mydht;
void setup() {
  // config LED_PIN output
  pinMode(32, OUTPUT);
  // setup PIR
  pinMode(12,INPUT);
  //setup for serial communication
  Serial.begin(9600);
  Serial.println("ESP32 collecting sensors data");
  mydht.setup(15,DHTesp::DHT22);
  lcd.init(); // initialize the lcd 
  // Print a message to the LCD.
  lcd.backlight();
  lcd.setCursor(1,0);
  lcd.println("ESP32 collecting data ...");
  delay(1000);
  //setup for serial communication
   Serial.print("Connecting to WiFi");
  //setup for WiFi connection
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println("WiFi Connected!");
}

void loop() {
  // get data from DHT22
  TempAndHumidity  data = mydht.getTempAndHumidity();
  String temp = String(data.temperature)+"C";
  String humid = String(data.humidity)+"%";
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Temp: "+temp);
  lcd.setCursor(0,1);
  lcd.print("Humidity: "+humid);
  // send data log and print data to Serial port
  Serial.println("Temp: " + temp);
  Serial.println("Humidity: " + humid);
  // signal's PIR and LED processing
  int pir_value = digitalRead(12);
  if(pir_value == 1){
    Serial.println("Motion detected");
    digitalWrite(32,HIGH);
    Serial.println("LED on");
    delay(100);
  }
  else{
    Serial.println("Motion ended");
    digitalWrite(32,LOW);
    Serial.println("LED off");
    delay(100);
  }
  Serial.println("---");

  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    String serverPath = serverName + "?temp="+temp+"&humid="+humid;     
    http.begin(serverPath.c_str()); // Send HTTP GET request 
    int httpResponseCode = http.GET();
    if (httpResponseCode > 0) {
      Serial.print("HTTP Response code: "); Serial.println(httpResponseCode);
      String payload = http.getString();
      Serial.println(payload);
    }
    else {
      Serial.print("Error code: "); Serial.println(httpResponseCode);
    }
    http.end();
  }
  else {
    Serial.println("WiFi Disconnected");
  }
  delay(1900);

}