text: import path from 'path'
  import {Connection  as OriginalConnection } from "ssh-pool"
  
  import { tmpName as asyncTmpName } from 'tmp'
  import { formatRsyncCommand, isRsyncSupported } from 'ssh-pool/lib/commands/rsync'
  import { formatTarCommand } from 'ssh-pool/lib/commands/tar'
  import { formatCdCommand } from 'ssh-pool/lib/commands/cd'
  import { formatMkdirCommand } from 'ssh-pool/lib/commands/mkdir'
  import { formatRawCommand } from 'ssh-pool/lib/commands/raw'
  import { formatRmCommand } from 'ssh-pool/lib/commands/rm'
  import { joinCommandArgs } from 'ssh-pool/lib/commands/util'
  import { parseRemote, formatRemote } from 'ssh-pool/lib/remote'
  import { exec, series, deprecateV3, deprecateV5 } from 'ssh-pool/lib/util'
  
  
  import { formatSshCommand } from './commands/ssh'
  import { formatScpCommand } from './commands/scp'
  const tmpName = async options =>
    new Promise((resolve, reject) =>
      asyncTmpName(options, (err, name) => {
        if (err) reject(err)
        else resolve(name)
      }),
    )
  
  /**
   * An ExecResult returned when a command is executed with success.
   * @typedef {object} ExecResult
   * @property {Buffer} stdout
   * @property {Buffer} stderr
   * @property {ChildProcess} child
   */
  
  /**
   * An ExecResult returned when a command is executed with success.
   * @typedef {object} MultipleExecResult
   * @property {Buffer} stdout
   * @property {Buffer} stderr
   * @property {ChildProcess[]} children
   */
  
  /**
   * An ExecError returned when a command is executed with an error.
   * @typedef {Error} ExecError
   * @property {Buffer} stdout
   * @property {Buffer} stderr
   * @property {ChildProcess} child
   */
  
  /**
   * Materialize a connection to a remote server.
   */
  class Connection extends  OriginalConnection{
    /**
     * Initialize a new `Connection` with `options`.
     *
     * @param {object} options Options
     * @param {string|object} options.remote Remote
     * @param {Stream} [options.stdout] Stdout stream
     * @param {Stream} [options.stderr] Stderr stream
     * @param {string} [options.key] SSH key
     * @param {function} [options.log] Log method
     * @param {boolean} [options.asUser] Use a custom user to run command
     * @param {number} [options.verbosityLevel] The SSH verbosity level: 0 (none), 1 (-v), 2 (-vv), 3+ (-vvv)
     */
    constructor(options = {}) {
       super(options);
    }
    /**
     * Copy data from a standard connection to the proxy connection
     * @param {Connection} ssh-pool Connection
     * @returns {null}
     */
    setFromOriginalConnection(originalConnection) {
  	  this.options = originalConnection.options;
  	  this.remote = originalConnection.remote;
    }
    
  /**
     * Merge new options onto the existing options
     * @param {object } [options] Options
     * @returns {null}
     */
    addOptions(newOptions) {
      this.options = Object.assign({}, this.options, newOptions);
       }
    /**
     * Run a command remotely using SSH.
     * All exec options are also available.
     *
     * @see https://nodejs.org/dist/latest-v8.x/docs/api/child_process.html#child_process_child_process_exec_command_options_callback
     * @param {string} command Command to run
     * @param {object} [options] Options
     * @param {boolean} [options.tty] Force a TTY allocation.
     * @returns {ExecResult}
     * @throws {ExecError}
     */
    async run(command, { tty: ttyOption, cwd,proxyHost, proxyUser, forwardAgent,  ...cmdOptions } = {}) {
      let tty = ttyOption
      if (command.startsWith('sudo') && typeof ttyOption === 'undefined') {
        deprecateV3('You should set "tty" option explictly when you use "sudo".')
        tty = true
      }
  
      this.log('Running "%s" on host "%s".', command, this.remote.host)
      const cmd = this.buildSSHCommand(command, { tty, cwd ,proxyHost, proxyUser, forwardAgent})
  	  return this.runLocally(cmd, cmdOptions)
    }
  
  
  
  
  
    /**
     * Run a copy from the local to the remote using scp.
     * All exec options are also available.
     *
     * @see https://nodejs.org/dist/latest-v8.x/docs/api/child_process.html#child_process_child_process_exec_command_options_callback
     * @param {string} src Source
     * @param {string} dest Destination
     * @param {object} [options] Options
     * @param {string[]} [options.ignores] Specify a list of files to ignore.
     * @param {...object} [cmdOptions] Command options
     * @returns {ExecResult}
     * @throws {ExecError}
     */
    async scpCopyToRemote(src, dest, { ignores, proxy, forwardAgent,...cmdOptions } = {}) {
      const archive = path.basename(await tmpName({ postfix: '.tar.gz' }))
      const srcDir = path.dirname(src)
      const remoteDest = `${formatRemote(this.remote)}:${dest}`
  
      const compress = joinCommandArgs([
        formatCdCommand({ folder: srcDir }),
        '&&',
        formatTarCommand({
          mode: 'compress',
          file: path.basename(src),
          archive,
          excludes: ignores,
        }),
      ])
  
      const createDestFolder = formatMkdirCommand({ folder: dest })
  
      const copy = joinCommandArgs([
        formatCdCommand({ folder: srcDir }),
        '&&',
        formatScpCommand({
  
          port: this.remote.port,
          key: this.options.key,
          proxy,
          forwardAgent,
          src: archive,
          dest: remoteDest,
        }),
      ])
  
      const cleanSrc = joinCommandArgs([
        formatCdCommand({ folder: srcDir }),
        '&&',
        formatRmCommand({ file: archive }),
      ])
  
      const extract = joinCommandArgs([
        formatCdCommand({ folder: dest }),
        '&&',
        formatTarCommand({ mode: 'extract', archive }),
      ])
  
      const cleanDest = joinCommandArgs([
        formatCdCommand({ folder: dest }),
        '&&',
        formatRmCommand({ file: archive }),
      ])
  
      return this.aggregate([
        () => this.runLocally(compress, cmdOptions),
        () => this.run(createDestFolder, cmdOptions),
        () => this.runLocally(copy, cmdOptions),
        () => this.runLocally(cleanSrc, cmdOptions),
        () => this.run(extract, cmdOptions),
        () => this.run(cleanDest, cmdOptions),
      ])
    }
  
    /**
     * Run a copy from the remote to the local using scp.
     * All exec options are also available.
     *
     * @see https://nodejs.org/dist/latest-v8.x/docs/api/child_process.html#child_process_child_process_exec_command_options_callback
     * @param {string} src Source
     * @param {string} dest Destination
     * @param {object} [options] Options
     * @param {string[]} [options.ignores] Specify a list of files to ignore.
     * @param {...object} [cmdOptions] Command options
     * @returns {MultipleExecResult}
     * @throws {ExecError}
     */
    async scpCopyFromRemote(src, dest, { ignores,proxy, forwardAgent, ...cmdOptions } = {}) {
      const archive = path.basename(await tmpName({ postfix: '.tar.gz' }))
      const srcDir = path.dirname(src)
      const srcArchive = path.join(srcDir, archive)
      const remoteSrcArchive = `${formatRemote(this.remote)}:${srcArchive}`
  
      const compress = joinCommandArgs([
        formatCdCommand({ folder: srcDir }),
        '&&',
        formatTarCommand({
          mode: 'compress',
          file: path.basename(src),
          archive,
          excludes: ignores,
        }),
      ])
  
      const createDestFolder = formatMkdirCommand({ folder: dest })
  
      const copy = formatScpCommand({
  
        port: this.remote.port,
        key: this.options.key,
        proxy,
        forwardAgent,
        src: remoteSrcArchive,
        dest,
      })
  
      const cleanSrc = joinCommandArgs([
        formatCdCommand({ folder: srcDir }),
        '&&',
        formatRmCommand({ file: archive }),
      ])
  
      const extract = joinCommandArgs([
        formatCdCommand({ folder: dest }),
        '&&',
        formatTarCommand({ mode: 'extract', archive }),
      ])
  
      const cleanDest = joinCommandArgs([
        formatCdCommand({ folder: dest }),
        '&&',
        formatRmCommand({ file: archive }),
      ])
  
      return this.aggregate([
        () => this.run(compress, cmdOptions),
        () => this.runLocally(createDestFolder, cmdOptions),
        () => this.runLocally(copy, cmdOptions),
        () => this.run(cleanSrc, cmdOptions),
        () => this.runLocally(extract, cmdOptions),
        () => this.runLocally(cleanDest, cmdOptions),
      ])
    }
  
    
    /**
     * Build an SSH command.
     *
     * @private
     * @param {string} command
     * @param {object} options
     * @returns {string}
     */
    buildSSHCommand(command, options) {
      Object.keys(options).forEach(key => options[key] === undefined && delete options[key])
      return formatSshCommand({
        port: this.remote.port,
        key: this.options.key,
        strict: this.options.strict,
        tty: this.options.tty,
        proxyUser:   this.options.proxyUser,
        proxyHost: this.options.proxyHost,
        forwardAgent: this.options.forwardAgent,
        verbosityLevel: this.options.verbosityLevel,
        remote: formatRemote(this.remote),
        command: formatRawCommand({ command, asUser: this.options.asUser }),
        ...options,
      })
    }
  
    /**
     * Abstract method to copy using rsync.
     *
     * @private
     * @param {string} src
     * @param {string} dest
     * @param {object} options
     * @param {string[]|string} rsync Additional arguments
     * @param {string[]} ignores Files to ignore
     * @param {...object} cmdOptions Command options
     * @returns {ExecResult}
     * @throws {ExecError}
     */
    async rsyncCopy(src, dest, { rsync, ignores, ...cmdOptions } = {}) {
      this.log('Copy "%s" to "%s" via rsync', src, dest)
      const sshCommand = formatSshCommand({
        port: this.remote.port,
        key: this.options.key,
        strict: this.options.strict,
        tty: this.options.tty,
        proxyUser:   this.options.proxyUser,
        proxyHost: this.options.proxyHost,
        forwardAgent: this.options.forwardAgent,
      })
  
      const cmd = formatRsyncCommand({
        src,
        dest,
        remoteShell: sshCommand,
        additionalArgs: typeof rsync === 'string' ? [rsync] : rsync,
        excludes: ignores,
      })
   
      return this.runLocally(cmd, cmdOptions)
    }
  
  
  
  
  }
  
  export default Connection
  