"""API - 商品参数值管理"""

from fastapi import APIRouter, Depends, HTTPException, Request
from pydantic import ValidationError
from sqlalchemy.orm import Session

from app.core.database import get_db
from app.core.auth import get_current_user
from app.core.admin_request_json import parse_admin_request_json
from app.core.response import success_response, error_response
from app.crud.product_parameter_value import product_parameter_value
from app.schemas.product_parameter_value import ProductParameterValueBatchSave

router = APIRouter(prefix="/web/admin/product-parameter-values", tags=["商品参数值管理"])


def require_admin(current_user: dict = Depends(get_current_user)):
    """验证运营人员权限"""
    if current_user.get("role") not in {"admin", "super_admin"}:
        raise HTTPException(status_code=403, detail="需要运营人员权限")
    return current_user


@router.get("/product/{product_id}", response_model=dict)
def get_product_parameter_values(
    product_id: str,
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_admin)
):
    """获取商品的参数值"""
    values = product_parameter_value.get_by_product_with_detail(db, product_id)
    
    return success_response({
        "list": values,
        "total": len(values)
    })


@router.post("/product/{product_id}", response_model=dict)
async def save_product_parameter_values(
    product_id: str,
    request: Request,
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_admin)
):
    """批量保存商品参数值（兼容密文信封）"""
    data, err = await parse_admin_request_json(
        request, current_user, source="admin_product_parameter_values"
    )
    if err:
        return error_response(400, err)
    if not isinstance(data, dict):
        return error_response(400, "请求体格式错误")
    try:
        save_data = ProductParameterValueBatchSave.model_validate(data)
    except ValidationError as exc:
        return error_response(400, str(exc))
    if save_data.product_id != product_id:
        return error_response(400, "请求体中的商品ID与路径不一致")

    creator = {"user_id": current_user.get("user_id"), "real_name": current_user.get("real_name")}
    values_data = [item.model_dump() for item in save_data.values]
    product_parameter_value.batch_save(db, product_id, values_data, creator)
    
    # 重新获取更新后的列表
    values = product_parameter_value.get_by_product_with_detail(db, product_id)
    
    return success_response({
        "list": values,
        "total": len(values)
    })