import { ITokenHandler, Tokens } from './ITokenHandler'
import { FileTokenHandler } from './FileTokenHandler'
import { OptionsTokenHandler } from './OptionsTokenHandler'

export class TokenHandlerFactory{
  static createTokenHandler(options?: Tokens): ITokenHandler {
    if(isOptionsPassed(options, 'access_token', 'url')){
      return new OptionsTokenHandler(options)
    }

    return new FileTokenHandler()
  }
}

function isOptionsPassed(options: any, ...keys: string[]): boolean{
  return options && [].every.call(keys, function(key: string){
    return options[key] !== undefined
  })
}