/**
   ESP32 + DHT22 Example for Wokwi
   
   https://wokwi.com/arduino/projects/322410731508073042
*/
#include <WiFi.h>
#include "ThingSpeak.h"
#include <iostream>

const int pirPin = 18;
const char* WIFI_NAME = "Wokwi-GUEST";
const char* WIFI_PASSWORD = "";
const int myChannelNumber = 2261728;
const char* myApiKey = "VLSESE83AF8HSDXV";
const char* server = "api.thingspeak.com";
int pirState = LOW;
int message = 0;

WiFiClient client;

void setup() {
  Serial.begin(115200);
  WiFi.begin(WIFI_NAME, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED){
    delay(1000);
    Serial.println("Wifi not connected");
  }
  Serial.println("Wifi connected!");
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
  Serial.println("Tran Hai Long B18DCAT149!");

}

void loop() {
  ThingSpeak.setField(2,message);
  int currentPir = digitalRead(pirPin);
  if (currentPir == HIGH) {
    if(pirState == LOW) {
      message = 1;
    }
    pirState = HIGH;
  }
  else {
    if (pirState == HIGH) {
      message = -1;
      pirState = LOW;
    }
  }
  if (message != 0) {
      int x = ThingSpeak.writeFields(myChannelNumber, myApiKey);
      delay(1000);
      if(x == 200){
        Serial.println("Data pushed successful!");
      }
      else {
        Serial.println("Push error" + String(x));
      }
      Serial.println("---");
      
  }
  delay(1000);

  message = 0;
}