from fastapi import FastAPI, HTTPException, Request
from fastapi.staticfiles import StaticFiles
from concurrent.futures import ThreadPoolExecutor
import asyncio
import aiohttp
import tempfile
import uuid
import os
import random
import traceback
import string

app = FastAPI()

def generate_hash(length=12):
    # Characters that can appear in the hash
    characters = string.ascii_lowercase + string.digits
    # Generate a random string of the specified length
    hash_string = ''.join(random.choice(characters) for _ in range(length))
    return hash_string

@app.get("/")
async def read_root():
    return {"message": "Saqib's API"}

# Create a directory to store MP3 files if it doesn't exist
AUDIO_DIR = "audio_files"
os.makedirs(AUDIO_DIR, exist_ok=True)

# Create a directory for storing output files
OUTPUT_DIR = "output"
os.makedirs(OUTPUT_DIR, exist_ok=True)

# Mount the audio directory
app.mount("/audio", StaticFiles(directory=AUDIO_DIR), name="audio")

# Mount the output directory
app.mount("/output", StaticFiles(directory=OUTPUT_DIR), name="output")

thread_pool = ThreadPoolExecutor(max_workers=2)

async def run_ffmpeg_async(ffmpeg_command):
    loop = asyncio.get_running_loop()
    await loop.run_in_executor(thread_pool, ffmpeg_command)

async def download_file(url: str, suffix: str):
    async with aiohttp.ClientSession() as session:
        async with session.get(url) as response:
            if response.status != 200:
                raise HTTPException(status_code=400, detail=f"Failed to download file from {url}")
            with tempfile.NamedTemporaryFile(delete=False, suffix=suffix) as temp_file:
                temp_file.write(await response.read())
                return temp_file.name


@app.post("/add_audio_to_image")
async def add_audio_to_image(request: Request):
    try:
        # Generate a unique filename
        output_filename = f"{uuid.uuid4()}.mp4"
        output_path = os.path.join(OUTPUT_DIR, output_filename)

        # Call the modal API with the request data and download the output file
        data = await request.json()
        async with aiohttp.ClientSession() as session:
            async with session.post(f"{MODAL_BASE_URL}/add_audio_to_image", json=data) as response:
                if response.status != 200:
                    raise HTTPException(status_code=500, detail="Failed to process request")
                output_data = await response.read()
                async with aiofiles.open(output_path, "wb") as f:
                    await f.write(output_data)

        # Return the URL path to the output file
        return f"https://sxqib-api.hf.space/output/{output_filename}"
    except Exception as e:
        print(f"An error occurred: {str(e)}")
        print(traceback.format_exc())
        raise HTTPException(status_code=500, detail=f"An unexpected error occurred: {str(e)}")

@app.post("/add_audio_to_video")
async def add_audio_to_video(request: Request):
    try:
        # Generate a unique filename
        output_filename = f"{uuid.uuid4()}.mp4"
        output_path = os.path.join(OUTPUT_DIR, output_filename)

        # Call the modal API with the request data and download the output file
        data = await request.json()
        async with aiohttp.ClientSession() as session:
            async with session.post(f"{MODAL_BASE_URL}/add_audio_to_video", json=data) as response:
                if response.status != 200:
                    raise HTTPException(status_code=500, detail="Failed to process request")
                output_data = await response.read()
                async with aiofiles.open(output_path, "wb") as f:
                    await f.write(output_data)

        # Return the URL path to the output file
        return f"https://sxqib-api.hf.space/output/{output_filename}"
    except Exception as e:
        print(f"An error occurred: {str(e)}")
        print(traceback.format_exc())
        raise HTTPException(status_code=500, detail=f"An unexpected error occurred: {str(e)}")

@app.post("/concatenate_videos")
async def concatenate_videos(request: Request):
    try:
        # Generate a unique filename for the output
        output_filename = f"{uuid.uuid4()}.mp4"
        output_path = os.path.join(OUTPUT_DIR, output_filename)

        # Call the modal API with the request data and download the output file
        data = await request.json()
        async with aiohttp.ClientSession() as session:
            async with session.post(f"{MODAL_BASE_URL}/concatenate_videos", json=data) as response:
                if response.status != 200:
                    raise HTTPException(status_code=500, detail="Failed to process request")
                output_data = await response.read()
                async with aiofiles.open(output_path, "wb") as f:
                    await f.write(output_data)

        # Return the URL path to the output file
        return f"https://sxqib-api.hf.space/output/{output_filename}"

    except Exception as e:
        print(f"An error occurred: {str(e)}")
        print(traceback.format_exc())
        raise HTTPException(status_code=500, detail=f"An unexpected error occurred: {str(e)}")
    
@app.post("/concatenate_audio")
async def concatenate_audio(request: Request):
    try:
        # Generate a unique filename for the output
        output_filename = f"{uuid.uuid4()}.mp3"
        output_path = os.path.join(AUDIO_DIR, output_filename)

        # Call the modal API with the request data and download the output file
        data = await request.json()
        async with aiohttp.ClientSession() as session:
            async with session.post(f"{MODAL_BASE_URL}/concatenate_audio", json=data) as response:
                if response.status != 200:
                    raise HTTPException(status_code=500, detail="Failed to process request")
                output_data = await response.read()
                async with aiofiles.open(output_path, "wb") as f:
                    await f.write(output_data)

        # Return the URL path to the output file
        return f"https://sxqib-api.hf.space/audio_files/{output_filename}"

    except Exception as e:
        print(f"An error occurred: {str(e)}")
        print(traceback.format_exc())
        raise HTTPException(status_code=500, detail=f"An unexpected error occurred: {str(e)}")

@app.post("/make_video")
async def make_video(request: Request):
    try:
        # Generate a unique filename for the output
        output_filename = f"{uuid.uuid4()}.mp4"
        output_path = os.path.join(OUTPUT_DIR, output_filename)

        # Call the modal API with the request data and download the output file
        data = await request.json()
        async with aiohttp.ClientSession() as session:
            async with session.post(f"{MODAL_BASE_URL}/make_video", json=data) as response:
                if response.status != 200:
                    raise HTTPException(status_code=500, detail="Failed to process request")
                output_data = await response.read()
                async with aiofiles.open(output_path, "wb") as f:
                    await f.write(output_data)

        # Return the URL path to the output file
        return f"https://sxqib-api.hf.space/output/{output_filename}"

    except Exception as e:
        print(f"An error occurred: {str(e)}")
        print(traceback.format_exc())
        raise HTTPException(status_code=500, detail=f"An unexpected error occurred: {str(e)}")

if __name__ == "__main__":
    import uvicorn
    uvicorn.run(app, host="0.0.0.0", port=7860)