"""
资产管理API路由
"""
from typing import List, Optional
from fastapi import APIRouter, Depends, HTTPException, status, Query
from sqlalchemy.orm import Session
from app.core.deps import get_db, get_current_user
from app.schemas.asset import (
    AssetCreate,
    AssetUpdate,
    AssetResponse,
    AssetWithRelations,
    AssetStatusHistoryResponse,
    AssetStatusTransition,
    AssetQueryParams
)
from app.services.asset_service import asset_service

router = APIRouter()


@router.get("/", response_model=List[AssetResponse])
def get_assets(
    skip: int = Query(0, ge=0, description="跳过条数"),
    limit: int = Query(20, ge=1, le=100, description="返回条数"),
    keyword: Optional[str] = Query(None, description="搜索关键词"),
    device_type_id: Optional[int] = Query(None, description="设备类型ID"),
    organization_id: Optional[int] = Query(None, description="网点ID"),
    status: Optional[str] = Query(None, description="状态"),
    purchase_date_start: Optional[str] = Query(None, description="采购日期开始(YYYY-MM-DD)"),
    purchase_date_end: Optional[str] = Query(None, description="采购日期结束(YYYY-MM-DD)"),
    db: Session = Depends(get_db),
    current_user = Depends(get_current_user)
):
    """
    获取资产列表

    - **skip**: 跳过条数
    - **limit**: 返回条数（最大100）
    - **keyword**: 搜索关键词（编码/名称/型号/序列号）
    - **device_type_id**: 设备类型ID筛选
    - **organization_id**: 网点ID筛选
    - **status**: 状态筛选
    - **purchase_date_start**: 采购日期开始
    - **purchase_date_end**: 采购日期结束
    """
    items, total = asset_service.get_assets(
        db=db,
        skip=skip,
        limit=limit,
        keyword=keyword,
        device_type_id=device_type_id,
        organization_id=organization_id,
        status=status,
        purchase_date_start=purchase_date_start,
        purchase_date_end=purchase_date_end
    )
    return items


@router.get("/statistics")
def get_asset_statistics(
    organization_id: Optional[int] = Query(None, description="网点ID筛选"),
    db: Session = Depends(get_db),
    current_user = Depends(get_current_user)
):
    """
    获取资产统计信息

    - **organization_id**: 网点ID筛选

    返回资产总数、总价值、状态分布等统计信息
    """
    return asset_service.get_statistics(db, organization_id)


@router.get("/{asset_id}", response_model=AssetWithRelations)
def get_asset(
    asset_id: int,
    db: Session = Depends(get_db),
    current_user = Depends(get_current_user)
):
    """
    获取资产详情

    - **asset_id**: 资产ID

    返回资产详情及其关联信息
    """
    return asset_service.get_asset(db, asset_id)


@router.get("/scan/{asset_code}", response_model=AssetWithRelations)
def scan_asset(
    asset_code: str,
    db: Session = Depends(get_db),
    current_user = Depends(get_current_user)
):
    """
    扫码查询资产

    - **asset_code**: 资产编码

    通过扫描二维码查询资产详情
    """
    return asset_service.scan_asset_by_code(db, asset_code)


@router.post("/", response_model=AssetResponse, status_code=status.HTTP_201_CREATED)
def create_asset(
    obj_in: AssetCreate,
    db: Session = Depends(get_db),
    current_user = Depends(get_current_user)
):
    """
    创建资产

    - **asset_name**: 资产名称
    - **device_type_id**: 设备类型ID
    - **brand_id**: 品牌ID（可选）
    - **model**: 规格型号
    - **serial_number**: 序列号
    - **supplier_id**: 供应商ID
    - **purchase_date**: 采购日期
    - **purchase_price**: 采购价格
    - **warranty_period**: 保修期（月）
    - **organization_id**: 所属网点ID
    - **location**: 存放位置
    - **dynamic_attributes**: 动态字段值
    - **remark**: 备注
    """
    return asset_service.create_asset(
        db=db,
        obj_in=obj_in,
        creator_id=current_user.id
    )


@router.put("/{asset_id}", response_model=AssetResponse)
def update_asset(
    asset_id: int,
    obj_in: AssetUpdate,
    db: Session = Depends(get_db),
    current_user = Depends(get_current_user)
):
    """
    更新资产

    - **asset_id**: 资产ID
    - **asset_name**: 资产名称
    - **brand_id**: 品牌ID
    - **model**: 规格型号
    - **serial_number**: 序列号
    - **supplier_id**: 供应商ID
    - **purchase_date**: 采购日期
    - **purchase_price**: 采购价格
    - **warranty_period**: 保修期
    - **organization_id**: 所属网点ID
    - **location**: 存放位置
    - **dynamic_attributes**: 动态字段值
    - **remark**: 备注
    """
    return asset_service.update_asset(
        db=db,
        asset_id=asset_id,
        obj_in=obj_in,
        updater_id=current_user.id
    )


@router.delete("/{asset_id}", status_code=status.HTTP_204_NO_CONTENT)
def delete_asset(
    asset_id: int,
    db: Session = Depends(get_db),
    current_user = Depends(get_current_user)
):
    """
    删除资产

    - **asset_id**: 资产ID

    软删除资产
    """
    asset_service.delete_asset(
        db=db,
        asset_id=asset_id,
        deleter_id=current_user.id
    )
    return None


# ===== 状态管理 =====

@router.post("/{asset_id}/status", response_model=AssetResponse)
def change_asset_status(
    asset_id: int,
    status_transition: AssetStatusTransition,
    db: Session = Depends(get_db),
    current_user = Depends(get_current_user)
):
    """
    变更资产状态

    - **asset_id**: 资产ID
    - **new_status**: 目标状态
    - **remark**: 备注
    - **extra_data**: 额外数据

    状态说明:
    - pending: 待入库
    - in_stock: 库存中
    - in_use: 使用中
    - transferring: 调拨中
    - maintenance: 维修中
    - pending_scrap: 待报废
    - scrapped: 已报废
    - lost: 已丢失
    """
    return asset_service.change_asset_status(
        db=db,
        asset_id=asset_id,
        status_transition=status_transition,
        operator_id=current_user.id,
        operator_name=current_user.real_name
    )


@router.get("/{asset_id}/history", response_model=List[AssetStatusHistoryResponse])
def get_asset_status_history(
    asset_id: int,
    skip: int = Query(0, ge=0, description="跳过条数"),
    limit: int = Query(50, ge=1, le=100, description="返回条数"),
    db: Session = Depends(get_db),
    current_user = Depends(get_current_user)
):
    """
    获取资产状态历史

    - **asset_id**: 资产ID
    - **skip**: 跳过条数
    - **limit**: 返回条数

    返回资产的所有状态变更记录
    """
    return asset_service.get_asset_status_history(db, asset_id, skip, limit)