neuron-cli/lib/command/watch.js

The neuron command line tool

'use strict'

var watch = exports
var gaze = require('gaze')
var paths = require('../paths')
var async = require('async')
var comfort = require('comfort')
var neuron_config = require('neuron-project-config')
var mix = require('mix2')
var error_handler = comfort.errorHandler({
  harmony: true,
  logger: require('../../config/logger')
})


watch.run = function (options, callback) {
  var self = this

  this.logger.info(
    options._watch_at
      ? '{{cyan watcher started}} at "' + options._watch_at + '"'
      : '{{cyan watcher started ...}}'
  )

  gaze(options.src + '/**/*', function (err, watcher) {
    if (err) {
      return callback(err)
    }

    this.on('all', function(event, filepath) {
      self._build(filepath, options)
    })
  })
}


watch._build = function (filepath, options) {
  if (this.building) {
    return
  }

  this.building = true

  var logger = this.logger
  var self = this
  function callback (err) {
    self.building = false
    if (err) {
      return error_handler(err)
    }
  }

  neuron_config.read(filepath, function (err, config) {
    if (err) {
      return callback(err)
    }

    var root = config.src
    var dest = config.dist

    paths.get_names_from_path(filepath, root, function (err, name) {
      if (err) {
        return callback(err)
      }

      var build_options = mix({
        name: name,
      }, options, false)

      self.commander.commander('build', function (err, commander) {
        if (err) {
          return callback(err)
        }

        commander.run(build_options, callback)
      })
    })
  })
}