import asyncio
import json
import os

import aiohttp
import gradio as gr
import numpy as np
import spaces
from huggingface_hub import InferenceClient

import random
import torch
from huggingface_hub import AsyncInferenceClient
from transformers import LlamaTokenizer, LlamaForCausalLM, AutoTokenizer, AutoModelForCausalLM


async def query_llm(payload, model_name):
    headers = {"Authorization": f"Bearer {os.getenv('HF_TOKEN')}"}
    async with aiohttp.ClientSession() as session:
        async with session.post(f"https://api-inference.huggingface.co/models/{model_name}", headers=headers,
                                json=payload) as response:
            return await response.json()


async def generate_mistral_7bvo1(system_input, user_input):
    client = AsyncInferenceClient(
        "mistralai/Mistral-7B-Instruct-v0.1",
        token=os.getenv('HF_TOKEN'),
    )

    async for message in await client.chat_completion(
            messages=[
                {"role": "system", "content": system_input},
                {"role": "user", "content": user_input}, ],
            max_tokens=256,
            stream=True,
    ):
        yield message.choices[0].delta.content


async def generate_t5(system_input, user_input):
    output = await query_llm({
        "inputs": (inputs := f"{system_input}\n{user_input}"),
    }, "google/flan-t5-large")
    yield output[0]["generated_text"]


async def generate_gpt2(system_input, user_input):
    output = await query_llm({
        "inputs": (inputs := f"{system_input}\n{user_input}"),
    }, "openai-community/gpt2")
    yield output[0]["generated_text"][:532]


async def generate_llama2(system_input, user_input):
    client = AsyncInferenceClient(
        "meta-llama/Llama-2-7b-chat-hf",
        token=os.getenv('HF_TOKEN')
    )
    async for message in await client.chat_completion(
            messages=[
                {"role": "system", "content": system_input},
                {"role": "user", "content": user_input}, ],
            max_tokens=256,
            stream=True,
    ):
        yield message.choices[0].delta.content


async def generate_llama3(system_input, user_input):
    client = AsyncInferenceClient(
        "meta-llama/Meta-Llama-3.1-8B-Instruct",
        token=os.getenv('HF_TOKEN')
    )
    try:
        async for message in await client.chat_completion(
                messages=[
                    {"role": "system", "content": system_input},
                    {"role": "user", "content": user_input}, ],
                max_tokens=256,
                stream=True,
        ):
            yield message.choices[0].delta.content
    except json.JSONDecodeError:
        pass


async def generate_mixtral(system_input, user_input):
    client = AsyncInferenceClient(
        "mistralai/Mixtral-8x7B-Instruct-v0.1",
        token=os.getenv('HF_TOKEN')
    )
    try:
        async for message in await client.chat_completion(
                messages=[
                    {"role": "system", "content": system_input},
                    {"role": "user", "content": user_input}, ],
                max_tokens=256,
                stream=True,
        ):
            yield message.choices[0].delta.content
    except json.JSONDecodeError:
        pass