const path = require('path')
const Rsync = require('rsync')

class Sync {
  constructor(opts) {
    this.options = opts
    this.rsync = new Rsync()
      .archive()
      .delete()
      .compress()
      .dirs()
      .exclude('node_modules/')
      .exclude('.git/')
      .source(path.join(opts.source, '/'))
      .destination(`${opts.ssh.username}@${opts.ssh.host}:${path.join(opts.target)}`)
    // can pass array of string of addition exlcudes - from a list likely
    if (opts.excludes) {
      this.rsync.exclude(opts.excludes)
    }
    if (opts.ssh.agent) {
      this.rsync.shell(`ssh -p ${opts.ssh.port}`)
    }
    if (opts.ssh.keyfilePath) {
      // This does NOT work with keys with pass phrase, use an ssh agent!
      this.rsync.shell(`ssh -i ${opts.ssh.keyfilePath} -p ${opts.ssh.port}`)
    }
    if (opts.ssh.password) {
      this.rsync.shell(`sshpass -p ${opts.ssh.password} ssh -o StrictHostKeyChecking=no -l ${opts.ssh.username}`)
    }
    console.log(this.rsync.command())
    this.syncInProgress = false
    return this
  }

  addStdOutStream(stream) {
    this.stdOutStream = stream
    return this
  }

  addStdErrStream(stream) {
    this.stdErrStream = stream
    return this
  }

  execute() {
    this.syncInProgress = true
    return new Promise((resolve, reject) => {
      this.rsync.execute((err, resCode) => {
        if (err) {
          return reject(err)
        }
        this.syncInProgress = false
        resolve(resCode)
      },
      this.stdOutStream,
      this.stdErrStream)
    })
  }
}

module.exports = Sync