from pydantic import BaseModel, field_validator, model_validator, Field
from typing import List, Optional, Generic, TypeVar
from utils import base64_to_cv2
from fastapi import FastAPI

app = FastAPI()

T = TypeVar("T")

class APIRequest(BaseModel):
    imageData : str
    text  : str

class APIResponse(BaseModel, Generic[T]):
    success: bool
    data: Optional[List[T]]
    msg: Optional[List[str]]

@app.post("/llm/detect")
@app.post("/llm/detect/")
async def detect(item: APIRequest):
    # illegal 为 0 代表没有违章
    # illegal 为 1 代表有违章
    response = {
        "sucess": "OK", 
        "data": {"illegal" : 0}, 
        "msg": ""
    }
    image = base64_to_cv2(item.imageData)
    if not image.size:
        response["sucess"] = "FAILED"
        response["msg"] = "Decode Image Error"
        return response
    
    # 提示词
    text = item.text
    # 大模型检测后如果有违章
    # response["data"]["illegal"] = 1
    
    return response