import * as Querystring from 'querystring'

import { Model } from '@oyst/utils'
import { ONECLICK_FRONT_URL } from '../lib/constants'
import parseUrl from 'url-parse'

export default class Url extends Model {
  private _token: string = null
  private _merchantID: string = null
  private _url: string = null
  private _version: number = null

  constructor (o?: Partial<Url>) {
    super()
    this.init(o)
  }

  public set token (value: string) {
    this._token = value
  }

  public get token (): string {
    return this._token
  }

  public set version (value: number) {
    this._version = value
  }

  public get version (): number {
    return this._version || 1
  }

  public set merchantID (value: string) {
    this._merchantID = value
  }

  public get merchantID (): string {
    return this._merchantID
  }

  public set url (value: string) {
    this._url = value
  }

  public get url (): string {
    return this._url
  }

  public encode (): string {
    this._url =  `${ONECLICK_FRONT_URL}?${Querystring.stringify({
      m: this._merchantID,
      t: this._token,
      v: this.version
    })}`
    return this._url
  }

  public decode (): void {
    const parsed = parseUrl(this._url, true)
    this._merchantID = parsed.query.m
    this._token = parsed.query.t
  }
}