import gc
from machine import Pin, SoftI2C, ADC
import time

# 1. LIGA A TELA NA LINHA 1 (TESTE DE VIDA)
gc.collect()
try:
    i2c = SoftI2C(scl=Pin(22), sda=Pin(21))
    import ssd1306
    oled = ssd1306.SSD1306_I2C(128, 64, i2c)
    oled.fill(0)
    oled.text("SISTEMA VIVO!", 20, 30)
    oled.show()
    print("OLED inicializado.")
except:
    print("Erro no visor. Verifique se o arquivo ssd1306.py existe!")

# 2. CARREGA O RESTO DEPOIS (ECONOMIA DE RAM)
import network, ujson, ntptime, dht, socket, ssl, ubinascii

# --- CONFIGURAÇÕES ---
REMETENTE = "[email protected]"
SENHA_APP = "hiqwvsdnkqexfpdu"
DESTINO   = "[email protected]"

# PROGRAMADO PARA 00:20 (AJUSTE PELO RELÓGIO QUE APARECER NO OLED!)
HORA_ALVO, MIN_ALVO = 0, 20 

# --- HARDWARE ---
sensor_dht = dht.DHT22(Pin(15))
mq2 = ADC(Pin(35))
mq2.atten(ADC.ATTN_11DB)
btn = Pin(4, Pin.IN, Pin.PULL_UP)

st = {'t':0, 'u':0, 'g':0, 'tela':0, 'l_btn':0}

def click(p):
    if time.ticks_diff(time.ticks_ms(), st['l_btn']) > 300:
        st['tela'] = (st['tela'] + 1) % 2
        st['l_btn'] = time.ticks_ms()

btn.irq(trigger=Pin.IRQ_RISING, handler=click)

def get_gas(v):
    # Sua calibração vitoriosa de pontos
    a = [0, 2567, 3061, 3146, 3226, 3337, 3415, 3516, 3665, 3762, 3881, 3916, 3923, 3932, 4095]
    p = [0, 10, 38, 50, 66, 100, 138, 219, 501, 1000, 3162, 5012, 5495, 6310, 100000]
    if v <= a[0]: return p[0]
    for i in range(len(a)-1):
        if a[i] <= v <= a[i+1]:
            return int(p[i] + (v-a[i])*(p[i+1]-p[i])/(a[i+1]-a[i]))
    return 0

def enviar_email():
    oled.fill(0); oled.text("ENVIANDO...", 20, 30); oled.show()
    gc.collect()
    m = (f"From: {REMETENTE}\r\nTo: {DESTINO}\r\n"
         f"Subject: Relatorio UMC\r\n\r\n"
         f"Estacao OK\nTemp: {st['t']}C\nUmid: {st['u']}%")
    try:
        s = socket.socket()
        s.settimeout(15)
        s.connect(socket.getaddrinfo("smtp.gmail.com", 465)[0][-1])
        s = ssl.wrap_socket(s)
        s.readline()
        s.write(b"EHLO esp32\r\n"); s.readline()
        s.write(b"AUTH LOGIN\r\n"); s.readline()
        s.write(ubinascii.b2a_base64(REMETENTE.encode())[:-1]+b"\r\n"); s.readline()
        s.write(ubinascii.b2a_base64(SENHA_APP.encode())[:-1]+b"\r\n")
        if b"235" in s.readline():
            s.write(f"MAIL FROM:<{REMETENTE}>\r\n".encode()); s.readline()
            s.write(f"RCPT TO:<{DESTINO}>\r\n".encode()); s.readline()
            s.write(b"DATA\r\n"); s.readline()
            s.write(m.encode() + b"\r\n.\r\n"); s.readline()
            s.write(b"QUIT\r\n"); s.close()
            oled.fill(0); oled.text("EMAIL OK!", 30, 30); oled.show()
            return True
        s.close()
    except: return False

# --- CONEXÃO ---
oled.fill(0); oled.text("CONECTANDO...", 0, 30); oled.show()
w = network.WLAN(network.STA_IF); w.active(True); w.connect('Wokwi-GUEST', '')
while not w.isconnected(): time.sleep(0.5)

try: ntptime.settime()
except: pass

last_s = time.time(); sent = False

# --- LOOP PRINCIPAL ---
while True:
    try:
        t_br = time.localtime(time.time() - 10800)
        dh = f"{t_br[3]:02d}:{t_br[4]:02d}:{t_br[5]:02d}"

        if t_br[3] == HORA_ALVO and t_br[4] == MIN_ALVO and not sent:
            if enviar_email(): sent = True
        elif t_br[3] != HORA_ALVO: sent = False

        try:
            sensor_dht.measure()
            st['t'], st['u'] = sensor_dht.temperature(), sensor_dht.humidity()
        except: pass
        st['g'] = get_gas(mq2.read())
        
        oled.fill(0)
        oled.text(dh, 70, 0)
        if st['tela'] == 0:
            oled.text(f"Temp: {st['t']:.1f}C", 0, 25)
            oled.text(f"Umid: {st['u']:.1f}%", 0, 45)
        else:
            oled.text(f"Gas: {st['g']} ppm", 0, 30)
        oled.show()

        if time.time() - last_s >= 40:
            import urequests
            try:
                url = "https://script.google.com/macros/s/AKfycbw8WDhI_oV5Z1X8_sUb0UtdDRgDe46VzhaJB5-FPmBRtZajZrq-mYcWS24nYVahHaOnmg/exec"
                urequests.post(url, json={"t": st['t'], "u": st['u']}).close()
            except: pass
            last_s = time.time(); gc.collect()

    except: pass
    time.sleep(0.5)