// Breno Correia Lociks
// Exercício 5

#include <WiFi.h>
#include <LiquidCrystal_I2C.h>
#include <DHTesp.h>
#include "ThingSpeak.h"
#include "secrets.h"

#define dataPin 12

DHTesp dht;

LiquidCrystal_I2C lcd(0x27,16,2);

char ssid[] = "Wokwi-GUEST"; 
char pass[] = "";

int keyIndex = 0;

WiFiClient  client;

unsigned long myChannelNumber = CHANNEL_ID;
const char * myWriteAPIKey = WRITE_API_KEY;

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

  dht.setup(dataPin, DHTesp::DHT22);

  lcd.init();
  lcd.setBacklight(HIGH);

  while (!Serial) {
    ;
  }
  
  WiFi.mode(WIFI_STA);  

  ThingSpeak.begin(client);
}

void loop() {
  if(WiFi.status() != WL_CONNECTED) {
    Serial.print("Attempting to connect to SSID: ");
    Serial.println("Wokwi-CLIENT");

    while(WiFi.status() != WL_CONNECTED) {
      WiFi.begin(ssid, pass);
      Serial.print(".");
      delay(5000);     
    } 

    Serial.println("\nConnected.");
  }

  float t = dht.getTemperature();
  float u = dht.getHumidity();

  lcd.setCursor(0,0);
  lcd.print(t);
  lcd.print(" C  ");
  lcd.setCursor(0,1);
  lcd.print(u);
  lcd.print(" % ");

  ThingSpeak.setField(1, t);
  ThingSpeak.setField(2, u);
  int x = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);

  if(x == 200) {
    Serial.println("Channel update successful.");
  }
  else {
    Serial.println("Problem updating channel. HTTP error code " + String(x));
  }
  delay(20000);
}