CheckRole Decoration on Adonis 5

Role.ts

import { HttpContext } from '@adonisjs/http-server/build/standalone'
import UnAuthorized from 'App/Exceptions/UnAuthorizedException'

const message = 'You are not authorized'
const status = 403
const errorCode = 'E_UNAUTHORIZED'

function CheckRole(permitted: string[]) {
  return function (target: Object, propertyKey: string, descriptor: PropertyDescriptor) {
    const current = descriptor.value
    descriptor.value = function (...args: any[]) {
      const ctx: HttpContext = args[0]
      const filtered = permitted.filter((item) => ctx.request.role === item)
      if (filtered.length === 1) {
        current(ctx)
      } else {
        throw new UnAuthorized(message, status, errorCode)
      }
    }
  }
}

export { CheckRole }

SomeController.ts

import { HttpContextContract } from '@ioc:Adonis/Core/HttpContext'
import { CheckRole } from 'App/Services/auth/RoleCheckService'

export default class AuthTestsController {
  @CheckRole(['satpam'])
  public async index(ctx: HttpContextContract) {
    return ctx.response.send('siap')
  }
}