import { NextRequest, NextResponse } from 'next/server'
import { getServerSession } from 'next-auth'
import { authOptions } from '@/lib/auth'
import { prisma } from '@/lib/prisma'

// 批量删除素材（软删除或永久删除）
export async function POST(request: NextRequest) {
  try {
    const session = await getServerSession(authOptions)
    
    if (!session || (session.user as any)?.role !== 'ADMIN') {
      return NextResponse.json({ error: '无权限' }, { status: 403 })
    }

    const { ids, permanent } = await request.json()

    if (!Array.isArray(ids) || ids.length === 0) {
      return NextResponse.json({ error: '请提供要删除的素材ID列表' }, { status: 400 })
    }

    if (permanent) {
      // 永久删除：从数据库中彻底删除
      await prisma.material.deleteMany({
        where: {
          id: { in: ids }
        }
      })
    } else {
      // 软删除：设置deletedAt字段，同时将任务号作废
      // 需要逐条处理，因为每条记录的任务号后缀不同
      const materials = await prisma.material.findMany({
        where: { id: { in: ids } },
        select: { id: true, taskNo: true }
      })
      
      const now = Date.now()
      await Promise.all(materials.map((m, index) => 
        prisma.material.update({
          where: { id: m.id },
          data: {
            deletedAt: new Date(),
            // 如果有任务号，加上删除时间戳后缀使其作废
            ...(m.taskNo ? { taskNo: `${m.taskNo}_DELETED_${now}_${index}` } : {})
          }
        })
      ))
    }

    return NextResponse.json({ 
      success: true,
      message: permanent ? '批量永久删除成功' : '批量删除成功'
    })
  } catch (error) {
    console.error('Batch delete materials error:', error)
    return NextResponse.json({ error: '批量删除失败' }, { status: 500 })
  }
}