import { Request, Response } from 'express'
import prisma from '../utils/prisma'
import { successResponse, errorResponse } from '../utils/response'
import { logOperation } from './operationLogController'

// 创建报废申请
export const createDisposal = async (req: Request, res: Response) => {
  try {
    const { equipment_id, disposal_reason, disposal_method, estimated_value, notes } = req.body
    const userId = res.locals.user?.id

    if (!userId) {
      return errorResponse(res, '用户未登录', 401)
    }

    const equipment = await prisma.equipment.findUnique({
      where: { id: Number(equipment_id) }
    })

    if (!equipment) {
      return errorResponse(res, '资产不存在', 404)
    }

    if (equipment.status === '已借出') {
      return errorResponse(res, '资产已借出，无法申请报废')
    }
    if (equipment.status === '待报废' || equipment.status === '已报废') {
      return errorResponse(res, '资产已在报废流程中')
    }

    const disposal = await prisma.disposalRecord.create({
      data: {
        equipment_id: equipment.id,
        equipment_code: equipment.equipment_code,
        disposal_reason,
        disposal_method,
        estimated_value: Number(estimated_value) || 0,
        applied_by: userId,
        notes
      }
    })

    await prisma.equipment.update({
      where: { id: equipment.id },
      data: { status: '待报废' }
    })

    // 记录操作日志
    const username = res.locals.user?.username || res.locals.user?.name || 'unknown'
    await logOperation(
      userId,
      username,
      '报废申请',
      `申请报废资产 ${equipment.equipment_name}(${equipment.equipment_code})，原因：${disposal_reason}，处置方式：${disposal_method}`,
      equipment.id,
      equipment.equipment_code,
      req.ip
    )

    successResponse(res, disposal, '报废申请创建成功')
  } catch (error: any) {
    console.error('[创建报废申请失败]', error)
    errorResponse(res, error.message || '创建报废申请失败')
  }
}

// 获取报废记录列表
export const getDisposalList = async (req: Request, res: Response) => {
  try {
    const { page = 1, pageSize = 10, status, keyword, equipment_id } = req.query
    const skip = (Number(page) - 1) * Number(pageSize)

    const where: any = {}
    if (status) where.status = status
    if (equipment_id) where.equipment_id = Number(equipment_id)
    if (keyword) {
      where.OR = [
        { equipment_code: { contains: String(keyword) } },
        { disposal_reason: { contains: String(keyword) } }
      ]
    }

    const [list, total] = await Promise.all([
      prisma.disposalRecord.findMany({
        where,
        skip,
        take: Number(pageSize),
        orderBy: { created_at: 'desc' },
        include: {
          equipment: { select: { equipment_name: true, equipment_type: true, unit_price: true } },
          applier: { select: { id: true, name: true, username: true } },
          approver: { select: { id: true, name: true, username: true } }
        }
      }),
      prisma.disposalRecord.count({ where })
    ])

    successResponse(res, { list, total, page: Number(page), pageSize: Number(pageSize) }, '获取成功')
  } catch (error: any) {
    errorResponse(res, error.message || '获取报废记录列表失败')
  }
}

// 获取报废记录详情
export const getDisposalDetail = async (req: Request, res: Response) => {
  try {
    const { id } = req.params
    const disposal = await prisma.disposalRecord.findUnique({
      where: { id: Number(id) },
      include: {
        equipment: true,
        applier: { select: { id: true, name: true, username: true } },
        approver: { select: { id: true, name: true, username: true } }
      }
    })

    if (!disposal) {
      return errorResponse(res, '报废记录不存在', 404)
    }

    successResponse(res, disposal, '获取成功')
  } catch (error: any) {
    errorResponse(res, error.message || '获取报废记录详情失败')
  }
}

// 审批报废申请
export const approveDisposal = async (req: Request, res: Response) => {
  try {
    const { id } = req.params
    const { approved, reject_reason } = req.body
    const userId = res.locals.user?.id

    if (!userId) {
      return errorResponse(res, '用户未登录', 401)
    }

    const disposal = await prisma.disposalRecord.findUnique({
      where: { id: Number(id) },
      include: { equipment: true }
    })

    if (!disposal) {
      return errorResponse(res, '报废记录不存在', 404)
    }

    if (disposal.status !== 'pending') {
      return errorResponse(res, '该申请已处理')
    }

    if (approved) {
      await prisma.disposalRecord.update({
        where: { id: Number(id) },
        data: { status: 'approved', approved_by: userId, approved_at: new Date() }
      })
    } else {
      await prisma.disposalRecord.update({
        where: { id: Number(id) },
        data: { status: 'rejected', approved_by: userId, approved_at: new Date(), notes: reject_reason }
      })
      await prisma.equipment.update({
        where: { id: disposal.equipment_id },
        data: { status: '可用' }
      })
    }

    // 记录操作日志
    const username = res.locals.user?.username || res.locals.user?.name || 'unknown'
    await logOperation(
      userId,
      username,
      approved ? '报废审批通过' : '报废审批驳回',
      `${approved ? '批准' : '驳回'}资产 ${disposal.equipment?.equipment_name || ''}(${disposal.equipment_code}) 的报废申请${!approved && reject_reason ? `，原因：${reject_reason}` : ''}`,
      disposal.equipment_id,
      disposal.equipment_code,
      req.ip
    )

    successResponse(res, null, approved ? '审批通过' : '已驳回')
  } catch (error: any) {
    errorResponse(res, error.message || '审批失败')
  }
}

// 完成报废处置
export const completeDisposal = async (req: Request, res: Response) => {
  try {
    const { id } = req.params
    const { actual_value, notes } = req.body

    const disposal = await prisma.disposalRecord.findUnique({
      where: { id: Number(id) }
    })

    if (!disposal) {
      return errorResponse(res, '报废记录不存在', 404)
    }

    if (disposal.status !== 'approved') {
      return errorResponse(res, '只有已审批的申请才能完成处置')
    }

    await prisma.disposalRecord.update({
      where: { id: Number(id) },
      data: {
        status: 'completed',
        actual_value: actual_value !== undefined ? Number(actual_value) : disposal.estimated_value,
        completed_at: new Date(),
        notes: notes || disposal.notes
      }
    })

    await prisma.equipment.update({
      where: { id: disposal.equipment_id },
      data: { status: '已报废' }
    })

    // 记录操作日志
    const userId = res.locals.user?.id
    const username = res.locals.user?.username || res.locals.user?.name || 'unknown'
    await logOperation(
      userId,
      username,
      '报废完成',
      `完成资产 (${disposal.equipment_code}) 的报废处置，实际残值：¥${actual_value !== undefined ? actual_value : disposal.estimated_value}`,
      disposal.equipment_id,
      disposal.equipment_code,
      req.ip
    )

    successResponse(res, null, '报废处置完成')
  } catch (error: any) {
    errorResponse(res, error.message || '完成报废处置失败')
  }
}

// 获取资产的报废历史
export const getEquipmentDisposalHistory = async (req: Request, res: Response) => {
  try {
    const { equipment_id } = req.params
    const history = await prisma.disposalRecord.findMany({
      where: { equipment_id: Number(equipment_id) },
      orderBy: { created_at: 'desc' },
      include: {
        applier: { select: { id: true, name: true } },
        approver: { select: { id: true, name: true } }
      }
    })

    successResponse(res, history, '获取成功')
  } catch (error: any) {
    errorResponse(res, error.message || '获取报废历史失败')
  }
}