from machine import Pin, I2C, PWM
import time
from onewire import OneWire
from ds18x20 import DS18X20
import ssd1306
from hx711 import HX711

# --- Pin Tanımlamaları ---
BUZZER_PIN = 3
LED_PIN = 0
DS18B20_PIN = 15
HX711_DT_PIN = 18
HX711_SCK_PIN = 19

# --- Başlangıç Ayarları ---
i2c = I2C(0, sda=Pin(16), scl=Pin(17))
oled = ssd1306.SSD1306_I2C(128, 64, i2c)
buzzer = PWM(Pin(BUZZER_PIN))
led = Pin(LED_PIN, Pin.OUT)

# --- Sensör Kurulumları ---
ds_sensor = DS18X20(OneWire(Pin(DS18B20_PIN)))
roms = ds_sensor.scan()
hx = HX711(dt_pin=HX711_DT_PIN, sck_pin=HX711_SCK_PIN)

# --- Eşik Değerler (°C ve kg) ---
LOW_TEMP_THRESHOLD = 10
HIGH_TEMP_THRESHOLD = 35
MIN_WEIGHT_THRESHOLD = 15
MAX_WEIGHT_THRESHOLD = 35

# --- Kalibrasyon Dosya Fonksiyonları ---
def save_calibration(offset, scale):
    with open("calibration.txt", "w") as f:
        f.write(f"{offset},{scale}")
        print("Kalibrasyon dosyaya kaydedildi.")

def load_calibration():
    try:
        with open("calibration.txt", "r") as f:
            offset, scale = map(float, f.read().split(","))
            print("Kalibrasyon dosyadan yüklendi.")
            return offset, scale
    except:
        print("Kalibrasyon dosyası yok.")
        return None, None

# --- Sensör Okumaları ---
def read_temperature():
    ds_sensor.convert_temp()
    time.sleep_ms(750)
    return ds_sensor.read_temp(roms[0])

def read_weight():
    return hx.get_units(5)

# --- OLED ve Konsol Gösterimi ---
def display_status(temp, weight, message):
    oled.fill(0)
    oled.text("Sicaklik:{:.1f}C".format(temp), 0, 0)
    oled.text("Agirlik :{:.1f}kg".format(weight), 0, 10)
    oled.text("Durum:", 0, 20)

    satir1 = message[:16]
    satir2 = message[16:32] if len(message) > 16 else ""
    oled.text(satir1, 0, 30)
    oled.text(satir2, 0, 40)
    oled.show()

    print("-----")
    print("Sıcaklık: {:.1f} °C".format(temp))
    print("Ağırlık : {:.1f} kg".format(weight))
    print("Durum   : {}".format(message))
    print("-----")

# --- Uyarı ve Kontrol Fonksiyonu ---
def play_buzzer(freq=1000, duration=0.5):
    buzzer.freq(freq)
    buzzer.duty_u16(32768)
    time.sleep(duration)
    buzzer.duty_u16(0)

def check_conditions(temp, weight):
    mesaj = "Her sey normal"

    if weight < MIN_WEIGHT_THRESHOLD:
        play_buzzer()
        mesaj = "Sulama Gerekli"
        print("UYARI: Bitkinin suya ihtiyacı var.")
    elif weight > MAX_WEIGHT_THRESHOLD:
        play_buzzer()
        mesaj = "Asiri Sulandi"
        print("UYARI: Bitki aşırı sulandı.")

    if temp < LOW_TEMP_THRESHOLD:
        led.on()
        mesaj = "Gunes Isigi Gerek"
        print("UYARI: Bitkinin güneşe ihtiyacı var.")
    elif temp > HIGH_TEMP_THRESHOLD:
        led.on()
        mesaj = "Golgede Tutun"
        print("UYARI: Bitkiyi güneşten uzaklaştırın.")
    else:
        led.off()

    return mesaj

# --- Ana Döngü ---
def main():
    hx.power_up()
    time.sleep(2)

    offset, scale = load_calibration()
    if offset is not None and scale is not None:
        hx.offset = offset
        hx.set_scale(scale)
    else:
        hx.tare(20)
        print("Tartıya 45kg ağırlık koyun ve 5 saniye bekleyin...")
        time.sleep(5)
        raw_with_weight = sum(hx.read() for _ in range(20)) / 20
        known_weight_kg = 45
        known_weight_g = known_weight_kg * 1000
        scale = (raw_with_weight - hx.offset) / known_weight_g
        hx.set_scale(scale)
        save_calibration(hx.offset, scale)

    while True:
        temp = read_temperature()
        weight = read_weight()
        status = check_conditions(temp, weight)
        display_status(temp, weight, status)
        time.sleep(2)

# --- Çalıştır ---
if __name__ == "__main__":
    main()