import asyncio
import os
import threading
import random
from threading import Event
from typing import Optional

import discord
import gradio as gr
from discord import Permissions
from discord.ext import commands
from discord.utils import oauth_url

import gradio_client as grc
from gradio_client.utils import QueueError

event = Event()

DISCORD_TOKEN = os.getenv("DISCORD_TOKEN")

async def wait(job):
    while not job.done():
        await asyncio.sleep(0.2)

def get_client(session: Optional[str] = None) -> grc.Client:
    client = grc.Client("huggingface-projects/transformers-musicgen", hf_token=os.getenv("HF_TOKEN"))
    if session:
        client.session_hash = session
    return client

intents = discord.Intents.default()
intents.message_content = True
bot = commands.Bot(command_prefix="/", intents=intents)

@bot.event
async def on_ready():
    print(f"Logged in as {bot.user} (ID: {bot.user.id})")
    synced = await bot.tree.sync()
    print(f"Synced commands: {', '.join([s.name for s in synced])}.")
    event.set()
    print("------")


#-----------------------------------------------------------------------
@bot.hybrid_command(
    name="testm", 
    description="Enter a prompt to generate music!",
)
async def musicgen_command(ctx, prompt: str, seed: int = None):
    """Generates music based on a prompt"""
    if ctx.author.id == bot.user.id:
        return    
    if seed is None:
        seed = random.randint(1, 10000)
    try:
        await music_create(ctx, prompt, seed)
    except Exception as e:
        print(f"Error: {e}")
#-----------------------------------------------------------------------
async def music_create(ctx, prompt, seed):
    """Runs music_create_job in executor"""
    try:
        message = await ctx.send(f"**{prompt}** - {ctx.author.mention} Generating...")

        loop = asyncio.get_running_loop()
        client = await loop.run_in_executor(None, get_client, None)
        job = client.submit(prompt, seed, api_name="/predict")
        await wait(job)

        try:
            job.result()
            files = job.outputs()
            media_files = files[0]
            audio = media_files[0]
            video = media_files[1]
            short_filename = prompt[:20]
            audio_filename = f"{short_filename}.mp3"
            video_filename = f"{short_filename}.mp4"
    
            with open(video, "rb") as file:
                discord_video_file = discord.File(file, filename=video_filename)
            await ctx.send(file=discord_video_file)
    
            with open(audio, "rb") as file:
                discord_audio_file = discord.File(file, filename=audio_filename)
            await ctx.send(file=discord_audio_file)            
            
        except QueueError:
            await ctx.send("The gradio space powering this bot is really busy! Please try again later!")

    except Exception as e:
        print(f"music_create Error: {e}")        
#---------------------------------------------------------------------
def run_bot():
    if not DISCORD_TOKEN:
        print("DISCORD_TOKEN NOT SET")
        event.set()
    else:
        bot.run(DISCORD_TOKEN)


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

event.wait()

with gr.Blocks() as demo:
    gr.Markdown(
    """
    # Discord bot of https://huggingface.co/spaces/facebook/MusicGen
    """
    )

demo.launch()