calebburke.dev/api/src/services/users/ensure-from-auth0-token-service.ts

import { auth0Integration } from "@/integrations"
import { User } from "@/models"
import { Op } from "@sequelize/core"
import BaseService from "@/services/base-service"
import { Users } from "@/services"

export class EnsureFromAuth0TokenService extends BaseService {
  constructor(private token: string) {
    super()
  }

  async perform(): Promise<User> {
    const { auth0Subject, email, firstName, lastName } = await auth0Integration.getUserInfo(
      this.token
    )

    const existingUser = await User.withScope(["asCurrentUser"]).findOne({
      where: { auth0Subject },
    })

    if (existingUser) {
      return existingUser
    }

    const firstTimeUser = await User.withScope(["asCurrentUser"]).findOne({
      where: { [Op.or]: [{ auth0Subject: email }, { email: email }] },
    })

    if (firstTimeUser) {
      await firstTimeUser.update({ auth0Subject })
      return firstTimeUser
    }

    await Users.CreateService.perform({
      auth0Subject,
      email,
      firstName,
      lastName,
    })

    const newUser = await User.withScope(["asCurrentUser"]).findOne({
      where: { auth0Subject },
      rejectOnEmpty: true,
    })

    return newUser
  }
}

export default EnsureFromAuth0TokenService