/**
   ESP32 + Led + Thingspeak
*/
#include <WiFi.h>
#include "ThingSpeak.h"

const int LED_PIN = 9;

// Credenciais de acesso à rede wi-fi
const char* WIFI_NAME = "Wokwi-GUEST";
const char* WIFI_PASSWORD = "";

// Credenciais de acesso ao ThingSpeak
const int myChannelNumber = 2574354;
const char* myApiKey = "58LGYNJH1YR0598Y";
const char* server = "api.thingspeak.com";

// Instanciação do cliente de rede wi-fi
WiFiClient client;

void setup() {
  Serial.begin(115200);
  pinMode(LED_PIN, OUTPUT);

  // Conecta na rede wi-fi
  WiFi.begin(WIFI_NAME, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED){
    delay(1000);
    Serial.println("Wifi not connected");
  }
  Serial.println("Wifi connected !");
  Serial.println("Local IP: " + String(WiFi.localIP()));
  WiFi.mode(WIFI_STA);

  // Inicializa comunicação com ThingSpeak
  ThingSpeak.begin(client);
}


void loop() {

  // Lê Field1 do canal ThingSpeak
  int led = ThingSpeak.readIntField(myChannelNumber, 1);  

  // Verifica se a leitura foi bem sucedida
  int statusCode = ThingSpeak.getLastReadStatus();
  if(statusCode == 200){
    // Exibe valor lido e aciona relé
    Serial.println((String)"Led: " + led);
    digitalWrite(LED_PIN, led);
  }
  else{
    Serial.println("Problema na leitura. Erro HTTP " + String(statusCode)); 
  }

  delay(1000);
}