OpenFrame/app/api/projects/[projectId]/members/route.ts

import { NextRequest } from 'next/server';
import { db } from '@/lib/db';
import { auth, checkProjectAccess } from '@/lib/auth';
import { InvitationRole, ProjectMemberRole } from '@prisma/client';
import { rateLimit } from '@/lib/rate-limit';
import {
  buildInvitationUrl,
  createOrRefreshInvitation,
  sendInvitationEmail,
} from '@/lib/invitations';
import { apiErrors, successResponse, withCacheControl } from '@/lib/api-response';
import { logError } from '@/lib/logger';

type RouteParams = { params: Promise<{ projectId: string }> };

// GET /api/projects/[projectId]/members - List members
export async function GET(request: NextRequest, { params }: RouteParams) {
  try {
    const session = await auth();
    const { projectId } = await params;

    if (!session?.user?.id) {
      return apiErrors.unauthorized();
    }

    const project = await db.project.findUnique({
      where: { id: projectId },
      include: {
        members: { where: { userId: session.user.id } },
      },
    });

    if (!project) {
      return apiErrors.notFound('Project');
    }

    const access = await checkProjectAccess(project, session.user.id);
    const isOwner = project.ownerId === session.user.id;
    const isMember = project.members.length > 0;
    const isAdmin = project.members[0]?.role === ProjectMemberRole.ADMIN;

    if (!access.hasAccess || (!isOwner && !isMember)) {
      return apiErrors.forbidden('Access denied');
    }

    const now = new Date();
    const canViewPendingInvitations = isOwner || isAdmin;
    const [members, owner, pendingInvitations] = await Promise.all([
      db.projectMember.findMany({
        where: { projectId },
        include: {
          user: { select: { id: true, name: true, email: true, image: true } },
        },
        orderBy: { createdAt: 'asc' },
      }),
      db.user.findUnique({
        where: { id: project.ownerId },
        select: { id: true, name: true, email: true, image: true },
      }),
      canViewPendingInvitations
        ? db.invitation.findMany({
            where: {
              projectId,
              scope: 'PROJECT',
              status: 'PENDING',
              expiresAt: { gt: now },
            },
            select: {
              id: true,
              email: true,
              role: true,
              createdAt: true,
              expiresAt: true,
              invitedBy: {
                select: { id: true, name: true, email: true },
              },
            },
            orderBy: { createdAt: 'desc' },
          })
        : Promise.resolve([]),
    ]);

    const response = successResponse({ members, owner, pendingInvitations });
    return withCacheControl(response, 'private, no-store');
  } catch (error) {
    logError('Error fetching project members:', error);
    return apiErrors.internalError('Failed to fetch members');
  }
}

// POST /api/projects/[projectId]/members - Invite a member
export async function POST(request: NextRequest, { params }: RouteParams) {
  try {
    const limited = await rateLimit(request, 'invite-member');
    if (limited) return limited;

    const session = await auth();
    const { projectId } = await params;

    if (!session?.user?.id) {
      return apiErrors.unauthorized();
    }

    // Check if user is owner or admin
    const project = await db.project.findUnique({
      where: { id: projectId },
      include: { members: { where: { userId: session.user.id } } },
    });

    if (!project) {
      return apiErrors.notFound('Project');
    }

    const access = await checkProjectAccess(project, session.user.id, { intent: 'manage' });
    const isOwner = project.ownerId === session.user.id;
    const isAdmin = project.members[0]?.role === ProjectMemberRole.ADMIN;

    if (!access.canEdit || (!isOwner && !isAdmin)) {
      return apiErrors.forbidden('Only project owners and admins can invite members');
    }

    const body = await request.json();
    const { email, role } = body;

    if (!email || typeof email !== 'string') {
      return apiErrors.badRequest('Email is required');
    }

    const normalizedEmail = email.toLowerCase().trim();
    const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
    if (!emailRegex.test(normalizedEmail)) {
      return apiErrors.validationError('Invalid email format');
    }

    // Validate role
    const validRoles = ['ADMIN', 'COMMENTATOR'];
    const memberRole = validRoles.includes(role) ? role : 'COMMENTATOR';

    // If this email belongs to an existing user, validate owner/member conflicts.
    const userToInvite = await db.user.findUnique({
      where: { email: normalizedEmail },
      select: { id: true },
    });

    if (userToInvite?.id === project.ownerId) {
      return apiErrors.badRequest('Cannot invite the project owner as a member');
    }

    if (userToInvite) {
      const existingMember = await db.projectMember.findUnique({
        where: { projectId_userId: { projectId, userId: userToInvite.id } },
      });

      if (existingMember) {
        return apiErrors.conflict('User is already a member of this project');
      }
    }

    const invitation = await createOrRefreshInvitation({
      email: normalizedEmail,
      scope: 'PROJECT',
      role: memberRole as InvitationRole,
      invitedById: session.user.id,
      projectId,
    });

    const invitationUrl = buildInvitationUrl(invitation.token);
    void sendInvitationEmail({
      to: normalizedEmail,
      inviterName: session.user.name || 'A team member',
      role: invitation.role,
      scope: invitation.scope,
      targetName: project.name,
      invitationUrl,
    });

    const response = successResponse({ message: 'Invitation email sent.' });
    return withCacheControl(response, 'private, no-store');
  } catch (error) {
    logError('Error inviting project member:', error);
    return apiErrors.internalError('Failed to invite member');
  }
}