/**
 * Shared utilities for share modals across workshop types.
 */

import type { ShareRole } from '@prisma/client';

export interface ShareUser {
  id: string;
  name: string | null;
  email: string;
}

export interface Share {
  id: string;
  role: ShareRole;
  user: ShareUser;
  createdAt?: Date;
}

export interface TeamMemberUser {
  id: string;
  email: string;
  name: string | null;
}

export interface TeamWithMembers {
  id: string;
  name: string;
  description: string | null;
  userRole?: 'ADMIN' | 'MEMBER';
  members?: { user: TeamMemberUser }[];
}

/**
 * Flatten team members from all teams, dedupe by userId, exclude current user.
 */
export function getTeamMembersForShare(
  userTeams: TeamWithMembers[],
  currentUserId: string
): TeamMemberUser[] {
  const seen = new Set<string>();
  return userTeams
    .flatMap((t) => t.members ?? [])
    .map((m) => m.user)
    .filter((u) => {
      if (u.id === currentUserId || seen.has(u.id)) return false;
      seen.add(u.id);
      return true;
    });
}