/**
 * 控制器基类
 * @author yutent<yutent.io@gmail.com>
 * @date 2020/09/24 15:45:17
 */

export default class Controller {
  #auth = null

  // 定义一个模板变量
  assign(key, val) {
    if (val === undefined || val === null) {
      val = ''
    }
    key += ''

    if (key) {
      this.context.$$views.assign(key, val)
    }
  }

  // 模板渲染, 参数是模板名, 可不带后缀, 默认是
  render(file, noParse = false) {
    this.context.$$views
      .render(file, noParse)
      .then(html => {
        this.response.render(html)
      })
      .catch(err => {
        this.response.error(err)
      })
  }

  get jwt() {
    return {
      result: this.#auth,
      sign(data) {
        let { ttl } = this.context.get('jwt')
        let { __mix_key__ } = this.request
        return this.context.$$jwt.sign(data, __mix_key__, ttl)
      },
      verify() {
        this.#auth = null
        let token = this.request.header('authorization')
        let { __mix_key__ } = this.request

        if (token) {
          this.#auth = this.context.$$jwt.verify(token, __mix_key__)
          return this.#auth
        }
      }
    }
  }

  // cookie读写
  cookie(key, val, opt) {
    if (arguments.length < 2) {
      return this.request.cookie(key)
    }

    if (!opt) {
      opt = {}
    }
    opt.domain = opt.domain || this.context.get('domain')

    if (val === null || val === undefined) {
      delete opt.expires
      opt.maxAge = -1
    }

    this.response.cookie(key, val, opt)
  }

  // 会话读写
  session(key, val) {
    var { enabled } = this.context.get('session')
    var { ssid } = this.request
    if (enabled) {
      if (arguments.length < 2) {
        // 这里返回的是Promise对象
        return this.context.$$session.get(ssid, key)
      }

      key += ''
      this.context.$$session.set(ssid, key, val)
    } else {
      throw Error('Session was disabled.')
    }
  }

  //针对框架定制的debug信息输出
  xdebug(err) {
    var msg = err
    if (this.context.get('debug')) {
      msg = err.message || err
    }

    msg = encodeURIComponent(msg + '')

    this.response.append('X-debug', msg)
  }
}