import asyncio
import os
from pathlib import Path

import qrcode
from dotenv import load_dotenv
from telethon import TelegramClient

from ..core.config import PHOTOS_DIR

ENV_PATH = Path(__file__).resolve().parent / ".env" 
load_dotenv(ENV_PATH)

API_ID = os.getenv("API_ID")
API_HASH = os.getenv("API_HASH")


if not API_ID or not API_HASH:
    raise ValueError("API_ID or API_HASH is not defined in .env")

API_ID = int(API_ID)

BASE_DIR = Path(__file__).resolve().parent

SOURCE = str(input("channel username:")).strip().lstrip("@")
CHANNEL =SOURCE

DOWNLOAD_DIR = SOURCE
MEDIA_ROOT = PHOTOS_DIR

async def download_photos(client):
    download_path = BASE_DIR / MEDIA_ROOT / DOWNLOAD_DIR
    download_path.mkdir(parents=True, exist_ok=True)
    
    async for msg in client.iter_messages(CHANNEL):
        if not msg.photo:
            continue
                
        filename = f"{msg.photo.id}.jpg"            
        full_path = download_path / filename
    
        if full_path.is_file() and full_path.stat().st_size > 0:
            continue
    
        try:
            await msg.download_media(file=full_path)
        except Exception as e:  # noqa: BLE001
            print(e)

async def main():
    client = TelegramClient("qr_session", API_ID, API_HASH)

    await client.connect()
    
    try:
        if not await client.is_user_authorized():

            qr = await client.qr_login()
            
            image = qrcode.QRCode()
            image.add_data(qr.url)
            image.make(fit=True)
            image.print_ascii(invert=True)
            # user = await qr.wait()

        await download_photos(client)     

    finally:
        await client.disconnect()

asyncio.run(main())