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

import httpx
from fastapi import HTTPException
from api.models import ChatRequest
from api.logger import setup_logger
from api.config import MODEL_MAPPING, GIZAI_API_ENDPOINT, GIZAI_HEADERS

logger = setup_logger(__name__)

# List of models supported by GizAI
GIZAI_CHAT_MODELS = [
    'chat-gemini-flash',
    'chat-gemini-pro',
    'chat-gpt4m',
    'chat-gpt4',
    'claude-sonnet',
    'claude-haiku',
    'llama-3-70b',
    'llama-3-8b',
    'mistral-large',
    'chat-o1-mini'
]

GIZAI_IMAGE_MODELS = [
    'flux1',
    'sdxl',
    'sd',
    'sd35',
]

GIZAI_MODELS = GIZAI_CHAT_MODELS + GIZAI_IMAGE_MODELS

GIZAI_MODEL_ALIASES = {
    # Chat model aliases
    "gemini-flash": "chat-gemini-flash",
    "gemini-pro": "chat-gemini-pro",
    "gpt-4o-mini": "chat-gpt4m",
    "gpt-4o": "chat-gpt4",
    "claude-3.5-sonnet": "claude-sonnet",
    "claude-3-haiku": "claude-haiku",
    "llama-3.1-70b": "llama-3-70b",
    "llama-3.1-8b": "llama-3-8b",
    "o1-mini": "chat-o1-mini",
    # Image model aliases
    "sd-1.5": "sd",
    "sd-3.5": "sd35",
    "flux-schnell": "flux1",
}

def get_gizai_model(model: str) -> str:
    model = MODEL_MAPPING.get(model, model)
    if model in GIZAI_MODELS:
        return model
    elif model in GIZAI_MODEL_ALIASES:
        return GIZAI_MODEL_ALIASES[model]
    else:
        # Default model
        return 'chat-gemini-flash'

def is_image_model(model: str) -> bool:
    return model in GIZAI_IMAGE_MODELS

async def process_streaming_response(request: ChatRequest):
    # GizAI does not support streaming; handle as non-streaming
    return await process_non_streaming_response(request)

async def process_non_streaming_response(request: ChatRequest):
    model = get_gizai_model(request.model)

    async with httpx.AsyncClient() as client:
        if is_image_model(model):
            # Image generation
            prompt = request.messages[-1].content
            data = {
                "model": model,
                "input": {
                    "width": "1024",
                    "height": "1024",
                    "steps": 4,
                    "output_format": "webp",
                    "batch_size": 1,
                    "mode": "plan",
                    "prompt": prompt
                }
            }
            try:
                response = await client.post(
                    GIZAI_API_ENDPOINT,
                    headers=GIZAI_HEADERS,
                    json=data,
                    timeout=100,
                )
                response.raise_for_status()
                response_data = response.json()
                if response_data.get('status') == 'completed' and response_data.get('output'):
                    images = response_data['output']
                    # Return image response (e.g., URLs)
                    return {
                        "id": f"imggen-{uuid.uuid4()}",
                        "object": "image_generation",
                        "created": int(datetime.now().timestamp()),
                        "model": request.model,
                        "data": images,
                    }
                else:
                    raise HTTPException(status_code=500, detail="Image generation failed")
            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"Error occurred during request: {e}")
                raise HTTPException(status_code=500, detail=str(e))
        else:
            # Chat completion
            messages_content = "\n".join([f"{msg.role}: {msg.content}" for msg in request.messages])
            data = {
                "model": model,
                "input": {
                    "messages": [
                        {
                            "type": "human",
                            "content": messages_content
                        }
                    ],
                    "mode": "plan"
                },
                "noStream": True
            }
            try:
                response = await client.post(
                    GIZAI_API_ENDPOINT,
                    headers=GIZAI_HEADERS,
                    json=data,
                    timeout=100,
                )
                response.raise_for_status()
                response_data = response.json()
                output = response_data.get('output', '')
                return {
                    "id": f"chatcmpl-{uuid.uuid4()}",
                    "object": "chat.completion",
                    "created": int(datetime.now().timestamp()),
                    "model": request.model,
                    "choices": [
                        {
                            "index": 0,
                            "message": {"role": "assistant", "content": output},
                            "finish_reason": "stop",
                        }
                    ],
                    "usage": None,
                }
            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"Error occurred during request: {e}")
                raise HTTPException(status_code=500, detail=str(e))