import type { Bot } from '../../bot'
// import { check } from 'mirai-ts'
import consola from 'consola'

/**
 * 面向用户的指令
 */
export class Command {
  /**
   * 指令名称
   */
  name = ''
  /**
   * 指令描述
   */
  desc = ''
  /**
   * 回调函数
   */
  callback = (options: string[]) => {
    consola.info(options)
  }

  children = new Map<string, Command>()

  constructor(public ctx: Bot) {}

  /**
   * 注册指令
   * @param name
   */
  command(name: string) {
    this.name = name

    return this
  }

  /**
   * 命令描述
   * @param desc
   */
  description(desc: string) {
    this.desc = desc
    return this
  }

  /**
   * 只有有回调执行操作的命令才会被加入 command 列表
   * @param callback
   */
  action(callback: (options: string[]) => any) {
    this.callback = callback
    if (this.children.has(this.name)) {
      this.ctx.logger.error(`指令【${this.name}】已存在`)
    }
    else {
      this.children.set(this.name, this)
      this.name = ''
      this.desc = ''
    }
    return this
  }

  parse(text: string) {
    const cmds = text.split(' ')
    const filteredCmds = cmds.filter(cmd => cmd !== '')

    const cmdKey = filteredCmds[0]
    if (this.children.has(cmdKey)) {
      const command = this.children.get(cmdKey)
      if (command)
        command.callback(filteredCmds.slice(1))
      else
        this.ctx.logger.warn(`指令【${cmdKey}】的行为未定义`)
    }
  }

  listen() {
    // const { mirai } = this.ctx
    // mirai.on('message', (msg) => {
    //   // if (check.isAt(msg, this.ctx.el.qq) && msg.plain.trim() === '帮助') {
    //   //   const content = getHelpContent(this.children)
    //   //   msg.reply(content)
    //   //   return
    //   // }

    //   this.parse(msg.plain.trim())
    // })
  }
}