from typing import Optional

from fastapi import APIRouter, Body, Query, Form
from pydantic import BaseModel

from ..rotation_service import rotate as rotate_impl, status as status_impl


router = APIRouter()


class RotateRequest(BaseModel):
    cityhash: Optional[str] = None
    num: Optional[int] = None


@router.post("/rotate")
def rotate(
    # 查询参数
    cityhash_q: Optional[str] = Query(None, alias="cityhash"),
    num_q: Optional[int] = Query(None, alias="num"),
    # 表单参数（multipart/form-data 或 application/x-www-form-urlencoded）
    cityhash_f: Optional[str] = Form(None),
    num_f: Optional[int] = Form(None),
    # JSON 请求体（application/json）
    req: Optional[RotateRequest] = Body(None),
):
    # 优先级：Query > Form > JSON
    effective_cityhash = (
        cityhash_q
        if cityhash_q is not None
        else (cityhash_f if cityhash_f is not None else (req.cityhash if req else None))
    )
    effective_num = (
        num_q if num_q is not None else (num_f if num_f is not None else (req.num if req else None))
    )
    result = rotate_impl(cityhash=effective_cityhash, num=effective_num)
    return result


@router.get("/status")
def get_status():
    return status_impl()