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#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <DHT.h>
#include <Servo.h>
#include <TimeLib.h>  // Library untuk waktu

#define DHTPIN 2          // Pin DHT22
#define DHTTYPE DHT22     // DHT 22 (AM2302)
#define RELAY_PIN 3       // Pin Relay
#define SERVO_PIN 9       // Pin Servo
#define SCREEN_WIDTH 128  // OLED display width
#define SCREEN_HEIGHT 64  // OLED display height

DHT dht(DHTPIN, DHTTYPE);
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
Servo fishFeederServo;

int lastFeedHour = -1;

void setup() {
  pinMode(RELAY_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, LOW); // Initially off
  fishFeederServo.attach(SERVO_PIN);
  fishFeederServo.write(0); // Initial position
  
  Serial.begin(9600);
  dht.begin();
  
  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for (;;);
  }
  display.display();
  delay(2000);
  display.clearDisplay();

  // Set initial time for testing purposes
  setTime(6, 59, 50, 1, 1, 2024);  // hour, minute, second, day, month, year
}

void loop() {
  // Update current time
  float humidity = dht.readHumidity();
  
  if (isnan(humidity)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }
  
  // Control relay based on humidity
  if (humidity < 65) {
    digitalWrite(RELAY_PIN, HIGH);
  } else if (humidity > 80) {
    digitalWrite(RELAY_PIN, LOW);
  }

  // Display data on OLED
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0, 0);
  display.print("Humidity: ");
  display.print(humidity);
  display.println(" %");
  
  if (digitalRead(RELAY_PIN) == HIGH) {
    display.println("Spray: ON");
  } else {
    display.println("Spray: OFF");
  }

  display.setCursor(0, 20);
  display.print("Time: ");
  display.print(hour());
  display.print(":");
  display.print(minute());
  display.print(":");
  display.print(second());

  // Fish feeder at specific times
  int currentHour = hour();
  if ((currentHour == 7 || currentHour == 12 || currentHour == 17 || currentHour == 22) && currentHour != lastFeedHour) {
    feedFish();
    lastFeedHour = currentHour;  // Update last feed hour
  }

  display.display();
  delay(1000);  // Delay untuk mengurangi beban CPU
}

void feedFish() {
  fishFeederServo.write(90); // Rotate to dispense food
  delay(5000);               // Wait for 5 seconds
  fishFeederServo.write(0);  // Rotate back to initial position
  Serial.println("Fish fed!");  // Tambahkan output untuk debug
}