/**
 * 一次性校正脚本：按花名册自动激活 + 同步角色（全量）
 *
 * 规则（与 lib/auto-personnel-rules.ts 一致）：
 *  - 有活跃绑定 + 花名册在职（非 RESIGNED）→ 自动激活（status=active, isActive=true）
 *  - M 级（levelType='M'）或 isLeadership → DEPT_ADMIN；否则 USER
 *  - 不降级 SYSTEM_ADMIN / ADMIN（人工授予的高权限保持不变）
 *
 * 用法：npx tsx --env-file=.env scripts/backfill-auto-personnel.ts        # 预演（默认）
 *       npx tsx --env-file=.env scripts/backfill-auto-personnel.ts --apply  # 实际写入
 */
import { prisma } from '@/lib/prisma'
import {
  getAuthoritativePersonnelForUser,
  shouldAutoActivate,
  deriveRoleFromPersonnel,
} from '@/lib/auto-personnel-rules'

const APPLY = process.argv.includes('--apply')

;(async () => {
  console.log(APPLY ? '=== 实际写入模式 ===' : '=== 预演模式（不写入）===')

  const users = await prisma.user.findMany({
    where: { archivedAt: null },
    select: { id: true, username: true, realName: true, role: true, status: true, isActive: true },
    orderBy: { username: 'asc' },
  })
  console.log(`账号总数（未归档）: ${users.length}\n`)

  let wouldActivate = 0
  let wouldRoleChange = 0
  const plan: string[] = []

  for (const u of users) {
    const personnel = await getAuthoritativePersonnelForUser(u.id)
    if (!personnel) continue // 无绑定，跳过

    const changes: string[] = []

    // 激活判定
    const shouldActivate = shouldAutoActivate(personnel)
    const currentStatus = u.status || (u.isActive ? 'active' : 'pending')
    if (shouldActivate && currentStatus !== 'active') {
      wouldActivate++
      changes.push(`激活: ${currentStatus} -> active`)
    }

    // 角色派生
    const derived = deriveRoleFromPersonnel(personnel)
    if (u.role !== 'SYSTEM_ADMIN' && u.role !== 'ADMIN' && u.role !== derived) {
      wouldRoleChange++
      changes.push(`角色: ${u.role} -> ${derived}`)
    }

    if (changes.length > 0) {
      plan.push(`${u.realName ?? u.username} (${u.username}): ${changes.join(', ')}`)

      if (APPLY) {
        await prisma.user.update({
          where: { id: u.id },
          data: {
            ...(shouldActivate && currentStatus !== 'active'
              ? { status: 'active', isActive: true, statusChangedAt: new Date(), statusChangedBy: 'auto-花名册在册' }
              : {}),
            ...(u.role !== 'SYSTEM_ADMIN' && u.role !== 'ADMIN' && u.role !== derived
              ? { role: derived }
              : {}),
          },
        })
      }
    }
  }

  console.log(`计划激活: ${wouldActivate} 人`)
  console.log(`计划角色变更: ${wouldRoleChange} 人`)
  console.log('\n明细:')
  for (const line of plan) console.log(`  ${line}`)

  if (APPLY) {
    console.log(`\n已写入 ${plan.length} 条记录`)
  } else {
    console.log('\n（预演结束，未写入任何数据。加 --apply 实际执行）')
  }

  await prisma.$disconnect()
})().catch((e) => { console.error(e); process.exit(1) })