from time import sleep_ms, ticks_ms 
from machine import Pin, I2C
import network
import urequests
import time
import json
from lcd_api import LcdApi
from i2c_lcd import I2cLcd

ssid = "Grey pg 5G"
password = "SANDHU87"

i2c = I2C(scl=Pin(22), sda=Pin(21), freq=400000)
lcd = I2cLcd(i2c, 0x27, 2, 16) 

button = Pin(4, Pin.IN, Pin.PULL_UP)

api_url = "http://192.168.1.16:5000/api/dashboard"


candidates = []
current_index = 0

def connect_wifi():
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    wlan.connect(ssid, password)
    lcd.clear()
    lcd.putstr("Connecting WiFi...")
    while not wlan.isconnected():
        time.sleep(1)
    lcd.clear()
    lcd.putstr("WiFi Connected")
    print("Connected to WiFi:", wlan.ifconfig())
    time.sleep(2)
    lcd.clear()

def fetch_candidates():
    global candidates
    try:
        response = urequests.get(api_url)
        if response.status_code == 200:
            candidates = [entry['name'] for entry in response.json()]
            response.close()
        else:
            lcd.clear()
            lcd.putstr("API Error!")
            time.sleep(2)
            lcd.clear()
    except Exception as e:
        print("Error:", e)
        lcd.clear()
        lcd.putstr("Request Failed")
        time.sleep(2)
        lcd.clear()

def show_candidate(index):
    lcd.clear()
    name = candidates[index][:16]
    lcd.putstr("Candidate:\n" + name)


connect_wifi()
fetch_candidates()

if candidates:
    show_candidate(current_index)

last_button = button.value()

while True:
    current_button = button.value()
    if last_button == 1 and current_button == 0: 
        current_index += 1
        if current_index >= len(candidates):
            current_index = 0
        show_candidate(current_index)
        time.sleep(0.3) 
    last_button = current_button
    time.sleep(0.05)