from datetime import datetime
import json
from typing import Any, Dict, Optional
import uuid

import httpx
from api.config import MODEL_MAPPING, AGENT_MODE, TRENDING_AGENT_MODE, headers
from fastapi import HTTPException
from api.auth import verify_app_secret  # Correctly import verify_app_secret

from api.config import APP_SECRET, BASE_URL
from api.models import ChatRequest

from api.logger import setup_logger

logger = setup_logger(__name__)

# Remove redundant definition of verify_app_secret

def message_to_dict(message):
    if isinstance(message.content, str):
        result = {"role": message.role, "content": message.content}
        if hasattr(message, 'data'):
            result['data'] = message.data
        return result
    elif isinstance(message.content, list) and len(message.content) == 2:
        return {
            "role": message.role,
            "content": message.content[0]["text"],
            "data": {
                "imageBase64": message.content[1]["image_url"]["url"],
                "fileText": "",
                "title": "snapshoot",
            },
        }
    else:
        return {"role": message.role, "content": message.content}

async def process_streaming_response(request: ChatRequest):
    json_data = {
        "messages": [message_to_dict(msg) for msg in request.messages],
        "previewToken": None,
        "userId": None,
        "codeModelMode": True,
        "agentMode": AGENT_MODE.get(request.model, {}),
        "trendingAgentMode": TRENDING_AGENT_MODE.get(request.model, {}),
        "isMicMode": False,
        "userSystemPrompt": None,
        "maxTokens": request.max_tokens,
        "playgroundTopP": request.top_p,
        "playgroundTemperature": request.temperature,
        "isChromeExt": False,
        "githubToken": None,
        "clickedAnswer2": False,
        "clickedAnswer3": False,
        "clickedForceWebSearch": False,
        "visitFromDelta": False,
        "mobileClient": False,
        "userSelectedModel": MODEL_MAPPING.get(request.model, request.model),
    }

    async with httpx.AsyncClient() as client:
        try:
            async with client.stream(
                "POST",
                f"{BASE_URL}/api/chat",
                headers=headers,
                json=json_data,
                timeout=100,
            ) as response:
                response.raise_for_status()
                async for line in response.aiter_lines():
                    timestamp = int(datetime.now().timestamp())
                    if line:
                        content = line + "\n"
                        if content.startswith("$@$v=undefined-rv1$@$"):
                            yield f"data: {json.dumps(create_chat_completion_data(content[21:], request.model, timestamp))}\n\n"
                        else:
                            yield f"data: {json.dumps(create_chat_completion_data(content, request.model, timestamp))}\n\n"

                yield f"data: {json.dumps(create_chat_completion_data('', request.model, timestamp, '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="External service error")
        except httpx.RequestError as e:
            logger.error(f"Error occurred during request: {e}")
            raise HTTPException(status_code=500, detail="Request to external service failed")