from fastapi.exceptions import (
    HTTPException,
    RequestValidationError,
    ResponseValidationError,
)
from fastapi.requests import Request
from fastapi.responses import JSONResponse
from tortoise.exceptions import DoesNotExist, IntegrityError
from app.log import logger


class SettingNotFound(Exception):
    pass


async def DoesNotExistHandle(req: Request, exc: DoesNotExist) -> JSONResponse:
    content = dict(
        code=404,
        msg=f"Object has not found, exc: {exc}, query_params: {req.query_params}",
    )
    return JSONResponse(content=content, status_code=404)


async def IntegrityHandle(_: Request, exc: IntegrityError) -> JSONResponse:
    content = dict(
        code=500,
        msg=f"IntegrityError，{exc}",
    )
    return JSONResponse(content=content, status_code=500)


async def HttpExcHandle(_: Request, exc: HTTPException) -> JSONResponse:
    content = dict(code=exc.status_code, msg=exc.detail, data=None)
    return JSONResponse(content=content, status_code=exc.status_code)


async def RequestValidationHandle(req: Request, exc: RequestValidationError) -> JSONResponse:
    try:
        body_bytes = await req.body()
        body_text = body_bytes.decode("utf-8", errors="replace")
        if len(body_text) > 10000:
            body_text = body_text[:10000] + "..."
        logger.error(
            f"422 RequestValidationError path={req.url.path} errors={exc.errors()} body={body_text}"
        )
    except Exception as e:
        logger.error(f"422 RequestValidationError logging failed: {e}")

    content = dict(code=422, msg=f"RequestValidationError, {exc}")
    return JSONResponse(content=content, status_code=422)


async def ResponseValidationHandle(_: Request, exc: ResponseValidationError) -> JSONResponse:
    content = dict(code=500, msg=f"ResponseValidationError, {exc}")
    return JSONResponse(content=content, status_code=500)