gongxiangp2/app/api/admin/users/set-department-manager/route.ts

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

/**
 * 设置部门管理员
 * POST /api/admin/users/set-department-manager
 */
export async function POST(request: NextRequest) {
  try {
    // 验证管理员权限
    const session = await getServerSession(authOptions);
    if (!session || !session.user || !isSystemAdmin((session.user as any).role)) {
      return NextResponse.json(
        { error: '需要管理员权限' },
        { status: 403 }
      );
    }

    const { userId, departmentName } = await request.json();

    if (!userId || !departmentName) {
      return NextResponse.json(
        { error: '用户ID和部门名称不能为空' },
        { status: 400 }
      );
    }

    // 检查该部门是否已有管理员
    const existingManager = await prisma.user.findFirst({
      where: {
        managedDepartment: departmentName,
        NOT: { id: userId }
      }
    });

    if (existingManager) {
      return NextResponse.json(
        { error: `部门"${departmentName}"已有管理员：${existingManager.username}` },
        { status: 400 }
      );
    }

    // 设置部门管理员（同时提升为管理员角色）
    const user = await prisma.user.update({
      where: { id: userId },
      data: {
        managedDepartment: departmentName,
        role: 'ADMIN'
      }
    });

    return NextResponse.json({
      message: '部门管理员设置成功',
      user
    });
  } catch (error) {
    console.error('Set department manager error:', error);
    return NextResponse.json(
      { error: '设置失败' },
      { status: 500 }
    );
  }
}

/**
 * 取消部门管理员
 * DELETE /api/admin/users/set-department-manager?userId=xxx
 */
export async function DELETE(request: NextRequest) {
  try {
    // 验证管理员权限
    const session = await getServerSession(authOptions);
    if (!session || !session.user || !isSystemAdmin((session.user as any).role)) {
      return NextResponse.json(
        { error: '需要管理员权限' },
        { status: 403 }
      );
    }

    const { searchParams } = new URL(request.url);
    const userId = searchParams.get('userId');

    if (!userId) {
      return NextResponse.json(
        { error: '用户ID不能为空' },
        { status: 400 }
      );
    }

    // 取消部门管理员
    const user = await prisma.user.update({
      where: { id: userId },
      data: {
        managedDepartment: null
      }
    });

    return NextResponse.json({
      message: '已取消部门管理员',
      user
    });
  } catch (error) {
    console.error('Remove department manager error:', error);
    return NextResponse.json(
      { error: '取消失败' },
      { status: 500 }
    );
  }
}