import { removeFromArray } from '@standardnotes/snjs'

type StatusCallback = (string: string) => void

export class StatusManager {
  private _message = ''
  private observers: StatusCallback[] = []

  get message(): string {
    return this._message
  }

  setMessage(message: string) {
    this._message = message
    this.notifyObservers()
  }

  onStatusChange(callback: StatusCallback) {
    this.observers.push(callback)
    return () => {
      removeFromArray(this.observers, callback)
    }
  }

  private notifyObservers() {
    for (const observer of this.observers) {
      observer(this._message)
    }
  }
}