#include <Arduino.h>
#include <ArduinoJson.h>
#include <DHT.h>
#include <HTTPClient.h>
#include <LiquidCrystal_I2C.h>


const char* ssid = "Wokwi-GUEST";
const char* password = "";
HTTPClient client;

const int green = 2;

#define DHTPIN 15
#define DHTTYPE DHT22
LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);

void setup() {
  Serial.begin(500);
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);

  //Wait for connection
  while (WiFi.status() != WL_CONNECTED){
    delay(500);
  }

  client.begin("https://wokwiproyecto-default-rtdb.firebaseio.com/SensorTemp/.json");
  client.addHeader("Content-Type", "application/json");

  LCD.init();
  LCD.backlight();
  LCD.setCursor(0, 0);
  LCD.print("Connecting to ");

  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);

  pinMode(green, OUTPUT);
  
 
}

void loop() {
  String json;
  StaticJsonDocument<200> doc;
  long sure, mesafe;
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  sure = pulseIn(echoPin, HIGH);
  mesafe = (sure / 2) / 29.1;
  
  if( mesafe > 200 || mesafe < 0){
    LCD.clear();
    LCD.setCursor(0, 0);
    LCD.println("Distancia segura");
    digitalWrite(green, HIGH);
    delay(8000); // Wait for 1000 millisecond(s)
    digitalWrite(green, LOW);
    delay(1000); // Wait for 1000 millisecond(s)
    doc["Sensor"] = "DHT22";
    doc["Temperatura"] = mesafe;
    doc["Status"] = "Distancia segura";
    doc["LED"] = "Encendido";
    serializeJson(doc, json);
    client.PATCH(json);
  }else{
    LCD.clear();
    LCD.setCursor(0, 0);
    LCD.print(mesafe);
    LCD.println(" cm");
    digitalWrite(green, HIGH);
    delay(8000); // Wait for 1000 millisecond(s)
    digitalWrite(green, LOW);
    delay(1000); // Wait for 1000 millisecond(s)
     doc["Sensor"] = "DHT22";
    doc["Temperatura"] = mesafe;
    doc["Status"] = "Distancia no segura";
    doc["LED"] = "Encendido";
    serializeJson(doc, json);
    client.PATCH(json);
  }
  
  String payload = client.getString();
  Serial.println(payload);

  delay(500);

}