main.py

from __future__ import annotations

import re
import random
import string
import uuid  # Already added
from datetime import datetime  # Add this line
from aiohttp import ClientSession
from fastapi import FastAPI, HTTPException
from pydantic import BaseModel
from typing import List, Dict, Any, Optional

# Mock implementations for ImageResponse and to_data_uri
class ImageResponse:
    def __init__(self, url: str, alt: str):
        self.url = url
        self.alt = alt

def to_data_uri(image: Any) -> str:
    # Placeholder for actual image encoding
    return "data:image/png;base64,..."  # Replace with actual base64 data

class AsyncGeneratorProvider:
    pass

class ProviderModelMixin:
    pass

class Blackbox(AsyncGeneratorProvider, ProviderModelMixin):
    url = "https://www.blackbox.ai"
    api_endpoint = "https://www.blackbox.ai/api/chat"
    working = True
    supports_stream = True
    supports_system_message = True
    supports_message_history = True
    
    default_model = 'blackbox'
    models = [
        'blackbox',
        'gemini-1.5-flash',
        "llama-3.1-8b",
        'llama-3.1-70b',
        'llama-3.1-405b',
        'ImageGenerationLV45LJp',
        'gpt-4o',
        'gemini-pro',
        'claude-sonnet-3.5',
    ]

    agentMode = {
        'ImageGenerationLV45LJp': {'mode': True, 'id': "ImageGenerationLV45LJp", 'name': "Image Generation"},
    }

    trendingAgentMode = {
        "blackbox": {},
        "gemini-1.5-flash": {'mode': True, 'id': 'Gemini'},
        "llama-3.1-8b": {'mode': True, 'id': "llama-3.1-8b"},
        'llama-3.1-70b': {'mode': True, 'id': "llama-3.1-70b"},
        'llama-3.1-405b': {'mode': True, 'id': "llama-3.1-405b"},
    }
    
    userSelectedModel = {
        "gpt-4o": "gpt-4o",
        "gemini-pro": "gemini-pro",
        'claude-sonnet-3.5': "claude-sonnet-3.5",
    }
    
    model_aliases = {
        "gemini-flash": "gemini-1.5-flash",
        "flux": "ImageGenerationLV45LJp",
    }

    @classmethod
    def get_model(cls, model: str) -> str:
        if model in cls.models:
            return model
        elif model in cls.userSelectedModel:
            return model
        elif model in cls.model_aliases:
            return cls.model_aliases[model]
        else:
            return cls.default_model

    @classmethod
    async def create_async_generator(
        cls,
        model: str,
        messages: List[Dict[str, str]],
        proxy: Optional[str] = None,
        image: Optional[Any] = None,
        image_name: Optional[str] = None,
        **kwargs
    ) -> Any:
        model = cls.get_model(model)
        
        headers = {
            "accept": "*/*",
            "accept-language": "en-US,en;q=0.9",
            "cache-control": "no-cache",
            "content-type": "application/json",
            "origin": cls.url,
            "pragma": "no-cache",
            "referer": f"{cls.url}/",
            "sec-ch-ua": '"Not;A=Brand";v="24", "Chromium";v="128"',
            "sec-ch-ua-mobile": "?0",
            "sec-ch-ua-platform": '"Linux"',
            "sec-fetch-dest": "empty",
            "sec-fetch-mode": "cors",
            "sec-fetch-site": "same-origin",
            "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36"
        }

        if model in cls.userSelectedModel:
            prefix = f"@{cls.userSelectedModel[model]}"
            if not messages[0]['content'].startswith(prefix):
                messages[0]['content'] = f"{prefix} {messages[0]['content']}"
        
        async with ClientSession(headers=headers) as session:
            if image is not None:
                messages[-1]["data"] = {
                    "fileText": image_name,
                    "imageBase64": to_data_uri(image)
                }
            
            random_id = ''.join(random.choices(string.ascii_letters + string.digits, k=7))

            data = {
                "messages": messages,
                "id": random_id,
                "previewToken": None,
                "userId": None,
                "codeModelMode": True,
                "agentMode": {},
                "trendingAgentMode": {},
                "userSelectedModel": None,
                "userSystemPrompt": None,
                "isMicMode": False,
                "maxTokens": 1024,
                "playgroundTopP": 0.9,
                "playgroundTemperature": 0.5,
                "isChromeExt": False,
                "githubToken": None,
                "clickedAnswer2": False,
                "clickedAnswer3": False,
                "clickedForceWebSearch": False,
                "visitFromDelta": False,
                "mobileClient": False,
                "webSearchMode": False,
            }

            if model in cls.agentMode:
                data["agentMode"] = cls.agentMode[model]
            elif model in cls.trendingAgentMode:
                data["trendingAgentMode"] = cls.trendingAgentMode[model]
            elif model in cls.userSelectedModel:
                data["userSelectedModel"] = cls.userSelectedModel[model]
            
            async with session.post(cls.api_endpoint, json=data, proxy=proxy) as response:
                response.raise_for_status()
                if model == 'ImageGenerationLV45LJp':
                    response_text = await response.text()
                    url_match = re.search(r'https://storage\.googleapis\.com/[^\s\)]+', response_text)
                    if url_match:
                        image_url = url_match.group(0)
                        yield ImageResponse(image_url, alt=messages[-1]['content'])
                    else:
                        raise Exception("Image URL not found in the response")
                else:
                    async for chunk in response.content.iter_any():
                        if chunk:
                            decoded_chunk = chunk.decode()
                            decoded_chunk = re.sub(r'\$@\$v=[^$]+\$@\$', '', decoded_chunk)
                            if decoded_chunk.strip():
                                yield decoded_chunk

# FastAPI app setup
app = FastAPI()

class Message(BaseModel):
    role: str
    content: str

class ChatRequest(BaseModel):
    model: str
    messages: List[Message]

from fastapi.responses import Response

@app.post("/v1/chat/completions")
async def chat_completions(
    request: ChatRequest, app_secret: str = Depends(verify_app_secret)
):
    logger.info(f"Received chat completion request for model: {request.model}")

    if request.model not in [model['id'] for model in ALLOWED_MODELS]:
        raise HTTPException(
            status_code=400,
            detail=f"Model {request.model} is not allowed. Allowed models are: {', '.join(model['id'] for model in ALLOWED_MODELS)}",
        )

    # Generate a UUID for the conversation
    conversation_id = str(uuid.uuid4()).replace("-", "")

    json_data = {
        "attachments": [],
        "conversationId": conversation_id,
        "prompt": "\n".join(
            [
                f"{'User' if msg.role == 'user' else 'Assistant'}: {msg.content}"
                for msg in request.messages
            ]
        ),
    }

    headers["uniqueid"] = conversation_id

    async def generate():
        async with httpx.AsyncClient() as client:
            try:
                async with client.stream('POST', f'{BASE_URL}/api/chat/gpt4o/chat', headers=headers, json=json_data, timeout=120.0) as response:
                    response.raise_for_status()
                    async for line in response.aiter_lines():
                        if line and line != "[DONE]":
                            content = json.loads(line)["data"]
                            yield f"data: {json.dumps(create_chat_completion_data(content['message'], request.model))}\n\n"
                    yield f"data: {json.dumps(create_chat_completion_data('', request.model, 'stop'))}\n\n"
                    yield "data: [DONE]\n\n"
            except httpx.HTTPStatusError as e:
                logger.error(f"HTTP error occurred: {e}")
                raise HTTPException(status_code=e.response.status_code, detail=str(e))
            except httpx.RequestError as e:
                logger.error(f"An error occurred while requesting: {e}")
                raise HTTPException(status_code=500, detail=str(e))

    if request.stream:
        logger.info("Streaming response")
        return StreamingResponse(generate(), media_type="text/event-stream")
    else:
        logger.info("Non-streaming response")
        full_response = ""
        async for chunk in generate():
            if chunk.startswith("data: ") and not chunk[6:].startswith("[DONE]"):
                data = json.loads(chunk[6:])
                if data["choices"][0]["delta"].get("content"):
                    full_response += data["choices"][0]["delta"]["content"]

        return {
            "id": f"chatcmpl-{uuid.uuid4()}",
            "object": "chat.completion",
            "created": int(datetime.now().timestamp()),
            "model": request.model,
            "choices": [
                {
                    "index": 0,
                    "message": {"role": "assistant", "content": full_response},
                    "finish_reason": "stop",
                }
            ],
            "usage": None,
        }