@restnfeel/agentc-starter-kit/src/app/api/users/invite/route.ts

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import { NextRequest, NextResponse } from "next/server";
import { getServerSession } from "next-auth";
import { authOptions } from "../../../../lib/auth";
import {
  UserRole,
  Permission,
  PermissionChecker,
  getUserPermissions,
} from "../../../../lib/auth/roles";
import { sendInvitationEmail } from "../../../../lib/email/invitation";
import { generateInviteToken } from "../../../../lib/auth/tokens";

interface InviteUserRequest {
  email: string;
  role: UserRole;
  siteIds?: string[];
  message?: string;
}

export async function POST(request: NextRequest) {
  try {
    const session = await getServerSession(authOptions);

    if (!session?.user) {
      return NextResponse.json(
        { error: "인증이 필요합니다." },
        { status: 401 }
      );
    }

    // Check if user has permission to invite users
    const userPermissions = getUserPermissions(
      (session.user as any).role as UserRole,
      (session.user as any).siteIds
    );
    const permissionChecker = new PermissionChecker(userPermissions);

    if (!permissionChecker.hasPermission(Permission.INVITE_USER)) {
      return NextResponse.json(
        { error: "사용자 초대 권한이 없습니다." },
        { status: 403 }
      );
    }

    const body: InviteUserRequest = await request.json();
    const { email, role, siteIds, message } = body;

    // Validate required fields
    if (!email || !role) {
      return NextResponse.json(
        { error: "이메일과 역할은 필수입니다." },
        { status: 400 }
      );
    }

    // Validate email format
    const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
    if (!emailRegex.test(email)) {
      return NextResponse.json(
        { error: "유효한 이메일 주소를 입력해주세요." },
        { status: 400 }
      );
    }

    // Validate role
    if (!Object.values(UserRole).includes(role)) {
      return NextResponse.json(
        { error: "유효하지 않은 역할입니다." },
        { status: 400 }
      );
    }

    // Check if user can assign this role
    if (
      role === UserRole.SUPER_ADMIN &&
      (session.user as any).role !== UserRole.SUPER_ADMIN
    ) {
      return NextResponse.json(
        { error: "슈퍼 관리자 역할은 슈퍼 관리자만 할당할 수 있습니다." },
        { status: 403 }
      );
    }

    // Validate site access for site-specific roles
    if (siteIds && siteIds.length > 0) {
      const accessibleSites = permissionChecker.getAccessibleSites();
      if (accessibleSites.length > 0) {
        // If not super admin
        const invalidSites = siteIds.filter(
          (siteId) => !accessibleSites.includes(siteId)
        );
        if (invalidSites.length > 0) {
          return NextResponse.json(
            {
              error: `다음 사이트에 대한 접근 권한이 없습니다: ${invalidSites.join(
                ", "
              )}`,
            },
            { status: 403 }
          );
        }
      }
    }

    // Check if user already exists
    // This would typically check your user database
    // For now, we'll assume the user doesn't exist

    // Generate invitation token
    const inviteToken = generateInviteToken({
      email,
      role,
      siteIds,
      invitedBy: (session.user as any).id,
      expiresAt: new Date(Date.now() + 7 * 24 * 60 * 60 * 1000), // 7 days
    });

    // Store invitation in database
    // This would typically save to your database
    // For now, we'll simulate this

    // Send invitation email
    try {
      await sendInvitationEmail({
        to: email,
        inviteToken,
        invitedBy: session.user.name || session.user.email || "관리자",
        role,
        siteIds,
        message,
      });
    } catch (emailError) {
      console.error("Failed to send invitation email:", emailError);
      return NextResponse.json(
        { error: "초대 이메일 발송에 실패했습니다." },
        { status: 500 }
      );
    }

    return NextResponse.json({
      message: "사용자 초대가 성공적으로 발송되었습니다.",
      invitation: {
        email,
        role,
        siteIds,
        invitedBy: session.user.name || session.user.email,
        invitedAt: new Date().toISOString(),
      },
    });
  } catch (error) {
    console.error("User invitation error:", error);
    return NextResponse.json(
      { error: "사용자 초대 중 오류가 발생했습니다." },
      { status: 500 }
    );
  }
}

export async function GET(_request: NextRequest) {
  try {
    const session = await getServerSession(authOptions);

    if (!session?.user) {
      return NextResponse.json(
        { error: "인증이 필요합니다." },
        { status: 401 }
      );
    }

    // Check if user has permission to view users
    const userPermissions = getUserPermissions(
      (session.user as any).role as UserRole,
      (session.user as any).siteIds
    );
    const permissionChecker = new PermissionChecker(userPermissions);

    if (!permissionChecker.hasPermission(Permission.VIEW_USERS)) {
      return NextResponse.json(
        { error: "사용자 조회 권한이 없습니다." },
        { status: 403 }
      );
    }

    // Get pending invitations
    // This would typically query your database for pending invitations
    // For now, we'll return a mock response

    const pendingInvitations = [
      {
        id: "1",
        email: "user@example.com",
        role: UserRole.EDITOR,
        siteIds: ["site1", "site2"],
        invitedBy: session.user.name || session.user.email,
        invitedAt: new Date().toISOString(),
        expiresAt: new Date(Date.now() + 7 * 24 * 60 * 60 * 1000).toISOString(),
        status: "pending",
      },
    ];

    return NextResponse.json({
      invitations: pendingInvitations,
    });
  } catch (error) {
    console.error("Get invitations error:", error);
    return NextResponse.json(
      { error: "초대 목록 조회 중 오류가 발생했습니다." },
      { status: 500 }
    );
  }
}