import gradio as gr
import os
import threading
from urllib.parse import urlparse, parse_qs
import discord
from discord.ext import commands
import secrets

# Discord bot -----------------------------------------------------------------------------------------------
intents = discord.Intents.all()
bot = commands.Bot(command_prefix="!", intents=intents)
GRADIO_APP_URL = "https://huggingface.co/spaces/lunarflu/gradio-oauth2"
DISCORD_TOKEN = os.environ.get("DISCORD_TOKEN", None)


# Dictionary to store user IDs and their corresponding unique strings
user_tokens = {}

@bot.event
async def on_ready():
    print(f'Logged in as {bot.user}')

def generate_unique_string(length=6):
    return secrets.token_hex(length // 2)

@bot.command()
async def sendlink(ctx, user: discord.User):
    if ctx.author.id == 811235357663297546:
        unique_string = generate_unique_string()
        user_tokens[user.id] = unique_string
        unique_link = f"{GRADIO_APP_URL}?user_id={user.id}&token={unique_string}"
        await user.send(f"Click the link to sign in with Hugging Face: {unique_link}")

def run_bot():
    bot.run(DISCORD_TOKEN)

threading.Thread(target=run_bot).start()

# Gradio ------------------------------------------------------------------------------------------------------------
def hello(profile: gr.OAuthProfile | None, request: gr.Request) -> str:
    url_str = str(request.url)
    query_params = parse_qs(urlparse(url_str).query)
    user_id = query_params.get('user_id', [None])[0]
    token = query_params.get('token', [None])[0]
    user = await bot.fetch_user(user_id)

    print(f"token:{token}\n user_id:{user_id}\n profile:{profile}\n user_tokens:{user_tokens}")

    if token is None:
        return "# ❌ Invalid link, unique code is missing. Generate a new link [here](https://discord.com/channels/879548962464493619/900125909984624713) !."

    if user_id is None:
        return "# ❌ Invalid link, discord user_id is missing. Generate a new link [here](https://discord.com/channels/879548962464493619/900125909984624713) !."

    if profile is None:
        return f"# ❌ Log in with Hugging Face to verify!"
    
    if int(user_id) not in user_tokens or user_tokens[int(user_id)] != token:
        return "# ❌ Invalid or expired link. Generate a new link [here](https://discord.com/channels/879548962464493619/900125909984624713) ! "

    return f"# ✅ Successfully logged in as {profile.username}. Discord username: {user.name}"

with gr.Blocks() as demo:
    with gr.Row():
        gr.Markdown("# Discord Verification Space")
    with gr.Row():
        login_button = gr.LoginButton()

            
    m1 = gr.Markdown()
    demo.load(hello, inputs=None, outputs=m1)




    
    def check_login_status():
        try:
            return login_button.get_session().get("oauth_info", None)
        except AttributeError:
            return None

    def check_login_wrapper():
        session = check_login_status()
        if session is None:
            return "Not logged in."
        else:
            return f"Logged in as {session.get('username', 'Unknown')}"

    login_button.click(check_login_wrapper, inputs=None, outputs=m1)

demo.launch()