#include <WiFi.h>
#include "ThingSpeak.h"
#include <OneWire.h>
#include <DallasTemperature.h>
#include <LiquidCrystal_I2C.h>

// === Wi-Fi ===
const char* ssid = "Wokwi-GUEST"; 
const char* password = "";        
WiFiClient client;

// === ThingSpeak ===
unsigned long myChannelNumber = 2962849; // <<< Substitua pelo seu Channel ID
const char* myWriteAPIKey = "1SIWG8OR61RZ0W8S"; // <<< Substitua pela sua Write API Key

// === Sensor DS18B20 ===
#define ONE_WIRE_BUS 4
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

// === Display LCD I2C ===
LiquidCrystal_I2C lcd(0x27, 16, 2); 

void setup() {
  Serial.begin(115200);

  // Inicia Wi-Fi
  WiFi.begin(ssid, password);
  Serial.print("Conectando ao Wi-Fi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\nWi-Fi conectado!");

  ThingSpeak.begin(client);        // Inicia conexão com ThingSpeak
  sensors.begin();                 // Inicia sensor DS18B20
  lcd.init();                      // Inicia LCD
  lcd.backlight();                 // Ativa luz do LCD
}

void loop() {
  sensors.requestTemperatures();
  float tempC = sensors.getTempCByIndex(0);

  Serial.print("DS Temperatura: ");
  Serial.println(tempC);

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("DS Temp: ");
  lcd.print(tempC);
  lcd.print(" C");

  // Envia para o ThingSpeak
  int x = ThingSpeak.writeField(myChannelNumber, 1, tempC, myWriteAPIKey);
  if (x == 200) {
    Serial.println("Enviado para ThingSpeak!");
  } else {
    Serial.println("Erro ao enviar: HTTP " + String(x));
  }

  delay(20000); // Aguarda 20 segundos
}