#define B1 18
#define B2 19
#define B3 21
#define B4P 22

#define LED1 12
#define LED2 13
#define LED3 14
#define LED4P 15

#include <WiFi.h>
#include "ThingSpeak.h"
#include <HTTPClient.h>
#include <WebServer.h>


int b1, b2, b3, b4p;

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* host = "api.thingspeak.com";

const char* APIkeyWrite = "APU9NWDB1DT4NEQ2";
const String APIkeyRead = "JUQ3FU9FS1UQSY0Q";

const String UltimosRESULTADOS = "1";
const String IDchannel = "IDcanal";
String urlreceive = "http://api.thingspeak.com/channels/" + IDchannel + "/feeds.json?api_key=" + APIkeyRead + "&results=" + UltimosRESULTADOS;



void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  Serial.print("Conectando-se ao WiFi");

  //ThingSpeak.begin(client);  // Initialize ThingSpeak

  pinMode(B1, INPUT_PULLUP);
  pinMode(B2, INPUT_PULLUP);
  pinMode(B3, INPUT_PULLUP);
  pinMode(B4P, INPUT_PULLUP);

  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(LED4P, OUTPUT);

  while (WiFi.status() != WL_CONNECTED)
  {
    delay(100);
    Serial.print(".");
  }
  Serial.println("OK! IP=");
  Serial.println(WiFi.localIP());
  delay(1000);

}

void loop() {
  int banco1 = 0;
  int banco2 = 0;
  int banco3 = 0;
  int banco4p = 0;

  if (WiFi.status() == WL_CONNECTED)
    Serial.println("CONECTADO\n");
  else
    Serial.println("NAO conectou\n");
  WiFiClient client;
  const int httpPort = 80;
  if (!client.connect(host, httpPort))
  {
    return;
  }

  HTTPClient http;
  http.begin(urlreceive);
  int httpCode = http.GET();
  if (httpCode == HTTP_CODE_OK)
  {
    String resposta = http.getString();
    Serial.println(resposta);
  }

  b1 = digitalRead(B1);
  if (b1 == 0) {
    analogWrite(LED1, HIGH);
    banco1++;
  }
  else
    analogWrite(LED1, LOW);

  b2 = digitalRead(B2);
  if (b2 == 0) {
    analogWrite(LED2, HIGH);
    banco2++;
  }
  else
    analogWrite(LED2, LOW);

  b3 = digitalRead(B3);
  if (b3 == 0) {
    analogWrite(LED3, HIGH);
    banco3++;
  }
  else
    analogWrite(LED3, LOW);

  b4p = digitalRead(B4P);
  if (b4p == 0) {
    analogWrite(LED4P, HIGH);
    banco4p++;
  }
  else
    analogWrite(LED4P, LOW);

  Serial.println(b1);
  Serial.println(b2);
  Serial.println(b3);
  Serial.println(b4p);

  int bancos_padrao_livres = 3 - (banco1 + banco2 + banco3);
  int bancos_pref_livres = 1 - banco4p;

  String url = "/update?api_key=";
  url += APIkeyWrite;
  url += "&field1=";
  url += String(banco1);
  url += "&field2=";
  url += String(banco2);
  url += "&field3=";
  url += String(banco3);
  url += "&field4=";
  url += String(banco4p);
  url += "\r\n";
  Serial.println(url);
  String endereco = String("GET ") + url + " HTTP/1.1\r\n" + "Host: " + host + "\r\n" + "Connection: close\r\n\r\n";
  Serial.println(endereco);
  client.print(endereco);
  delay(10000);
  Serial.println("Bancos padrao livres: " + String(bancos_padrao_livres));
  Serial.println("Bancos preferenciais livres: " + String(bancos_pref_livres));

  String urlreceive = "/update?api_key=";
  urlreceive += APIkeyWrite;
  url += "&field1=";
  url += String(banco1);
  url += "&field2=";
  url += String(banco2);
  url += "&field3=";
  url += String(banco3);
  url += "&field4=";
  url += String(banco4p);
  urlreceive += "\r\n";
  Serial.println(urlreceive);
  String resposta = String("GET ") + urlreceive + " HTTP/1.1\r\n" + "Host: " + host + "\r\n" + "Connection: close\r\n\r\n";

  http.begin(urlreceive); //endereça a urlreceive
  if (httpCode == HTTP_CODE_OK) {
    String resposta = http.getString(); //Obtem a resposta da nuvem
    Serial.println(resposta); //Escreve a resposta no monitor
  }



  delay(10); // this speeds up the simulation
}