#include "DHTesp.h"
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
#define OLED_RESET -1 // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3C ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32

#define NUMFLAKES 10 // Number of snowflakes in the animation example
#define LOGO_HEIGHT 16
#define LOGO_WIDTH 16

const int DHT_PIN = 15;

DHTesp dhtSensor;
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

void updateDisplay() {
    TempAndHumidity  data = dhtSensor.getTempAndHumidity();
    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(WHITE);
    display.setCursor(5, 30);
    display.println(" Temp: " + String(data.temperature, 2));
    display.setTextSize(1);
    display.drawRect(0, 0, 128, 64, 1);
    display.setCursor(5, 40);
    display.print(" Humidity: " + String(data.humidity, 1) + "%");
    display.display();
}


void setup() {
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if(!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
  Serial.println(F("SSD1306 allocation failed"));
  for(;;); // Don't proceed, loop forever
  }
  
  delay(2000); // Pause for 2 seconds
}

void loop() {
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  display.clearDisplay();

  updateDisplay();

  display.display();

  delay(3000); 

  // Wait for a new reading from the sensor (DHT22 has ~0.5Hz sample rate)

  // between 26 and 28 show hello world
  if(data.temperature >= 26 && data.temperature <= 28){
    TempAndHumidity  data = dhtSensor.getTempAndHumidity();
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(1);
    display.setCursor(0, 20);
    display.println("hello world");
    display.display();

    delay(5000); 
  }
  display.clearDisplay();

  if(data.temperature < 26){
    TempAndHumidity  data = dhtSensor.getTempAndHumidity();
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(1);
    display.setCursor(0, 20);
    display.println("hello world 1");
    display.display();

    delay(5000); 
  }

  if(data.temperature > 28){
    TempAndHumidity  data = dhtSensor.getTempAndHumidity();
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(1);
    display.setCursor(0, 20);
    display.println("hello world 2");
    display.display();

    delay(5000); 

  }
}