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

#define lebar 128
#define tinggi 64
#define reset -1
#define addr 0x3C
#define DHTPIN 11
#define DHTTYPE DHT22

float minimalSuhu = 20;
float maksimalSuhu = 30;
String keterangan;
DHT dht(DHTPIN, DHTTYPE);
Adafruit_SSD1306 oled(lebar, tinggi, &Wire, reset);

void printCenter(String text, String mode, int tinggiTeks = 0, int ukuranText = 1, String warna = "putih") {
  int16_t x1, y1;
  uint16_t w, h;
  uint16_t textColor;
  if (warna == "putih") {
    textColor = SSD1306_WHITE;
  } else if (warna == "hitam") {
    textColor = SSD1306_BLACK;
  } else if (warna == "invert") {
    textColor = SSD1306_INVERSE;
  } oled.getTextBounds(text, 0, tinggiTeks, &x1, &y1, &w, &h);
  while (w > lebar && text.length() > 0) {
    text.remove(text.length() - 1);
    text.trim();
    text += "...";
    oled.getTextBounds(text, 0, tinggiTeks, &x1, &y1, &w, &h);
  } oled.setTextSize(ukuranText);
  oled.setTextColor(textColor);
  if (mode == "normal") {
    int x = (lebar - w) / 2;
    oled.setCursor(x, tinggiTeks);
    oled.println(text);
  } else if (mode == "center") {
    int x = (lebar - w) / 2;
    int y = (tinggi - h) / 2;
    oled.setCursor(x, y);
    oled.println(text);
  } else if (mode == "centerX") {
    int x = (lebar - w) / 2;
    oled.setCursor(x, tinggiTeks);
    oled.println(text);
  }
}

void setup() {
  Serial.begin(9600);
  Wire.begin();
  dht.begin();
  if (!oled.begin(SSD1306_SWITCHCAPVCC, addr)) {
    Serial.println(F("eror"));
    while (true);
  }
  oled.clearDisplay();
  printCenter("Sensor Suhu", "center", 0, 1, "putih");
  oled.display(); 
  delay(2000);
}

void loop() {
  float kelembapan = dht.readHumidity();
  float suhu = dht.readTemperature();
  oled.clearDisplay();
  if (isnan(suhu) || isnan(kelembapan)) {
    printCenter("Gagal membaca dari sensor DHT22!","center",0,2,"putih");
    return;
  }
  printCenter("Suhu: " + String(suhu, 1) + " C", "centerX", 10, 1, "putih");
  printCenter("Kelembapan : " + String(kelembapan, 1) + " %", "centerX", 22, 1, "putih");
  if (suhu < minimalSuhu) {
    keterangan = "Terlalu Dingin";
  } 
  else if (suhu >= minimalSuhu && suhu <= maksimalSuhu) {
    keterangan = "Suhu ideal";
  } 
  else if (suhu > maksimalSuhu) {
    keterangan = "Terlalu Panas";
  }
  printCenter(keterangan, "centerX", 40, 1, "putih");
  oled.display();
  delay(200);
}