import os
import discord
import secrets
import threading
import gradio as gr

from discord.ext import commands
from discord.ui import Button, View
from urllib.parse import urlparse, parse_qs


# 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)


# commands ---------------------------------------------------------------------------------------------------------
@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}")


class DMButton(Button):
    def __init__(self, label, style, message):
        super().__init__(label=label, style=style)
        self.message = message

    async def callback(self, interaction: discord.Interaction):
        await interaction.user.send(self.message)
        await interaction.response.send_message(f"DM sent to {interaction.user.mention}", ephemeral=True)

@bot.command(name='sendbutton')
async def send_button(ctx):
    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}"
        button = DMButton(label="Verify Discord Account", style=discord.ButtonStyle.primary, message=f"To complete the verification process, visit this link and click the 'sign in with Hugging Face' button: {unique_link}")
        view = View()
        view.add_item(button)
        await ctx.send("Click the button below:", view=view)


# 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]

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

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

    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) !"

    if profile is None:
        return f"# ❌ Not logged in with Hugging Face yet."

    # Remove the token after successful verification
    del user_tokens[int(user_id)]

    return f"# ✅ Successfully logged in as {profile.username}. User ID: {user_id}"

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()

def run_bot():
    bot.run(DISCORD_TOKEN)

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