import type { AuthUser, PermissionKey } from "@mrp/shared";

import { prisma } from "./prisma.js";

export async function getCurrentUserById(userId: string): Promise<AuthUser | null> {
  const user = await prisma.user.findUnique({
    where: { id: userId },
    include: {
      userRoles: {
        include: {
          role: {
            include: {
              rolePermissions: {
                include: {
                  permission: true,
                },
              },
            },
          },
        },
      },
    },
  });

  if (!user) {
    return null;
  }

  const permissionKeys = new Set<PermissionKey>();
  const roleNames = user.userRoles.map(({ role }) => {
    for (const rolePermission of role.rolePermissions) {
      permissionKeys.add(rolePermission.permission.key as PermissionKey);
    }

    return role.name;
  });

  return {
    id: user.id,
    email: user.email,
    firstName: user.firstName,
    lastName: user.lastName,
    roles: roleNames,
    permissions: [...permissionKeys],
  };
}