/*********
  Rui Santos
  Complete project details at https://randomnerdtutorials.com  
*********/

#include <LiquidCrystal_I2C.h>
#include "DHTesp.h"

const int DHT_PIN = 15;

DHTesp dhtSensor;

// set the LCD number of columns and rows
int lcdColumns = 16;
int lcdRows = 2;

// set LCD address, number of columns and rows
// if you don't know your display address, run an I2C scanner sketch
LiquidCrystal_I2C lcd(0x27, lcdColumns, lcdRows);  

String data.temperature = " ";
String data.humidity = " ";

// Function to scroll text
// The function acepts the following arguments:
// row: row number where the text will be displayed
// message: message to scroll
// delayTime: delay between each character shifting
// lcdColumns: number of columns of your LCD
void scrollText(int row, String message, int delayTime, int lcdColumns) {
  for (int i=0; i < lcdColumns; i++) {
    message = " " + message;  
  } 
  message = message + " "; 
  for (int pos = 0; pos < message.length(); pos++) {
    lcd.setCursor(0, row);
    lcd.print(message.substring(pos, pos + lcdColumns));
    delay(delayTime);
  }
}

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

  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  // initialize LCD
  lcd.init();
  // turn on LCD backlight                      
  lcd.backlight();
}

void loop(){
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  //lcd.print("Temp: " + String(data.temperature, 2) + "°C");
  //lcd.print("Humidity: " + String(data.humidity, 1) + "%");
  //lcd.print("---");
  //delay(1000);

  // set cursor to first column, first row
  lcd.setCursor(0, 0);
  lcd.setCursor(0, 1);
  // print static message
  //lcd.print(messageStatic);
  // print scrolling message
  scrollText(0, data.temperature, 50, lcdColumns);
  scrollText(1, data.humidity, 50, lcdColumns);
}