from machine import Pin, I2C, ADC
from ssd1306 import SSD1306_I2C
import framebuf, sys
import utime

pix_res_x = 128
pix_res_y = 64

def init_i2c(scl_pin, sda_pin):
    # Initialize I2C device
    i2c_dev = I2C(1, scl=Pin(scl_pin), sda=Pin(sda_pin), freq=200000)
    i2c_addr = [hex(ii) for ii in i2c_dev.scan()]
    
    if not i2c_addr:
        print('No I2C Display Found')
        sys.exit()
    else:
        print("I2C Address      : {}".format(i2c_addr[0]))
        print("I2C Configuration: {}".format(i2c_dev))
    
    return i2c_dev


def display_anima(oled, ldr, led):
    # Display a simple timer animation and LDR value on the OLED
    start_time = utime.ticks_ms()

    while True:
        elapsed_time = (utime.ticks_diff(utime.ticks_ms(), start_time) // 1000) + 1
        ldr_value = ldr.read_u16()
        
        # Calculate light percentage
        light_percentage = (ldr_value / 65535) * 100
        
        # Control LED based on LDR value (threshold can be adjusted)
        if ldr_value < 30000:
            led.on()
        else:
            led.off()
        
        # Clear the specific lines by drawing a filled black rectangle
        oled.fill_rect(5, 30, oled.width - 5, 8, 0)
        oled.fill_rect(5, 40, oled.width - 5, 8, 0)
        oled.fill_rect(5, 50, oled.width - 5, 8, 0)

        oled.text("Timer:", 10, 20)
        oled.text(str(elapsed_time) + " sec", 5, 30)
        oled.text("LDR: " + str(ldr_value), 5, 40)
        oled.text("Light: {:.1f}%".format(light_percentage), 5, 50)
        oled.show()
        utime.sleep_ms(1000)

def main():
    i2c_dev = init_i2c(scl_pin=27, sda_pin=26)
    oled = SSD1306_I2C(pix_res_x, pix_res_y, i2c_dev)
    
    ldr = ADC(Pin(28))  # Initialize LDR on GP26 (ADC0)
    led = Pin(9, Pin.OUT)  # Initialize LED on GP5
    
    # Uncomment below lines if you want to display logo and text
    # display_logo(oled)
    # display_text(oled)
    
    display_anima(oled, ldr, led)

if __name__ == '__main__':
    main()