"""API - 商品参数模板管理"""
from typing import Optional

from fastapi import APIRouter, Depends, HTTPException, Query
from sqlalchemy.orm import Session

from app.core.database import get_db
from app.core.auth import get_current_user
from app.core.response import success_response, error_response
from app.crud.product_parameter import product_parameter
from app.schemas.product_parameter import (
    ProductParameterCreate,
    ProductParameterUpdate,
    ProductParameterResponse,
    ProductParameterListResponse,
    ProductParameterSimpleResponse
)

router = APIRouter(prefix="/web/admin/product-parameters", tags=["商品参数模板管理"])


def require_admin(current_user: dict = Depends(get_current_user)):
    """验证运营人员权限"""
    if current_user.get("role") != "admin":
        raise HTTPException(status_code=403, detail="需要运营人员权限")
    return current_user


@router.get("", response_model=dict)
def list_parameters(
    page: int = Query(1, ge=1, description="页码"),
    pageSize: int = Query(10, ge=1, le=100, description="每页条数"),
    keyword: Optional[str] = Query(None, description="关键词搜索"),
    isActive: Optional[int] = Query(None, description="是否启用"),
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_admin)
):
    """获取参数模板列表"""
    items, total = product_parameter.get_multi_paged(
        db,
        skip=(page - 1) * pageSize,
        limit=pageSize,
        keyword=keyword,
        is_active=isActive
    )
    
    return success_response({
        "list": [{
            "id": p.id,
            "name": p.name,
            "code": p.code,
            "paramType": p.param_type,
            "options": p.options,
            "placeholder": p.placeholder,
            "isRequired": p.is_required,
            "isActive": p.is_active,
            "sortOrder": p.sort_order,
            "remark": p.remark,
            "createAt": str(p.create_at) if p.create_at else None
        } for p in items],
        "total": total,
        "page": page,
        "pageSize": pageSize
    })


@router.get("/simple", response_model=dict)
def list_parameters_simple(
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_admin)
):
    """获取参数模板简洁列表（用于下拉选择）"""
    items = product_parameter.get_active_all(db)
    
    return success_response({
        "list": [{
            "id": p.id,
            "name": p.name,
            "code": p.code,
            "paramType": p.param_type,
            "options": p.options
        } for p in items],
        "total": len(items)
    })


@router.get("/{parameter_id}", response_model=dict)
def get_parameter(
    parameter_id: str,
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_admin)
):
    """获取参数详情"""
    param = product_parameter.get(db, parameter_id)
    if not param:
        return error_response(404, "参数不存在")
    
    return success_response({
        "id": param.id,
        "name": param.name,
        "code": param.code,
        "paramType": param.param_type,
        "options": param.options,
        "placeholder": param.placeholder,
        "isRequired": param.is_required,
        "isActive": param.is_active,
        "sortOrder": param.sort_order,
        "remark": param.remark,
        "createAt": str(param.create_at) if param.create_at else None
    })


@router.post("", response_model=dict)
def create_parameter(
    create_data: ProductParameterCreate,
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_admin)
):
    """创建参数模板"""
    # 检查编码是否已存在
    if product_parameter.code_exists(db, create_data.code):
        return error_response(400, "参数编码已存在")
    
    creator = {"user_id": current_user.get("user_id"), "real_name": current_user.get("real_name")}
    param = product_parameter.create(db, create_data.model_dump(), creator)
    
    return success_response({
        "id": param.id,
        "name": param.name,
        "code": param.code
    })


@router.put("/{parameter_id}", response_model=dict)
def update_parameter(
    parameter_id: str,
    update_data: ProductParameterUpdate,
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_admin)
):
    """更新参数模板"""
    # 检查编码是否已存在（排除自身）
    if update_data.code:
        if product_parameter.code_exists(db, update_data.code, exclude_id=parameter_id):
            return error_response(400, "参数编码已存在")
    
    updater = {"user_id": current_user.get("user_id"), "real_name": current_user.get("real_name")}
    param = product_parameter.update(db, parameter_id, update_data.model_dump(exclude_unset=True), updater)
    
    if not param:
        return error_response(404, "参数不存在")
    
    return success_response({
        "id": param.id,
        "name": param.name,
        "code": param.code
    })


@router.delete("/{parameter_id}", response_model=dict)
def delete_parameter(
    parameter_id: str,
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_admin)
):
    """删除参数模板"""
    result = product_parameter.delete(db, parameter_id)
    if not result:
        return error_response(404, "参数不存在")
    return success_response({"message": "删除成功"})