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

// GET - 获取当前用户信息（账号字段 + 权威人员档案合并）
export async function GET(request: NextRequest) {
  try {
    const session = await getServerSession(authOptions);
    const userId = session?.user ? (session.user as any).id : undefined;

    if (!userId) {
      return NextResponse.json({ error: '未登录' }, { status: 401 });
    }

    const user = await prisma.user.findUnique({
      where: { id: userId },
      select: {
        id: true,
        username: true,
        email: true,
        avatar: true,
        realName: true,
        phone: true,
        createdAt: true,
      },
    });

    if (!user) {
      return NextResponse.json({ error: '用户不存在' }, { status: 404 });
    }

    // 权威人员档案（钉钉绑定 → HR 花名册视图）；未绑定者为 null
    const employee = await getEmployeeByUserId(user.id);

    return NextResponse.json({
      ...user,
      // 旧 department 字符串已淘汰，不再返回
      employee: employee
        ? {
            displayName: employee.displayName,
            realName: employee.realName,
            flowerName: employee.flowerName,
            jobNumber: employee.jobNumber,
            departmentPath: employee.departmentPath,
            positionTitle: employee.positionTitle,
            positionLevel: employee.positionLevel,
            levelType: employee.levelType,
            managerName: employee.managerName,
            employmentStatus: employee.employmentStatus,
          }
        : null,
    });
  } catch (error) {
    console.error('[UserProfile] GET error:', error);
    return NextResponse.json(
      { error: '获取用户信息失败' },
      { status: 500 }
    );
  }
}