Local number middleware
=======================

    pkg = require '../package.json'
    @name = "#{pkg.name}:middleware:local-number"
    {debug} = (require 'tangible') @name

    @include = () ->

      return unless @session?.direction is 'lcr'

      provisioning = new CouchDB (Nimble @cfg).provisioning

      return if @res.finalized()

Used by `astonishing-competition`.

      @session.destination_onnet = false

      debug "Checking whether #{@destination} is local."
      doc = await provisioning
        .get "number:#{@destination}"
        .catch -> null

      return unless doc?

      if doc.disabled
        debug "#{doc._id} is local but is disabled."
        return
      if not doc.account?
        debug "#{doc._id} is local but has no account."
        return

      gw = @res.sendto doc.inbound_uri
      gw.headers =
        'P-Charge-Info': url.format {
          protocol:'sip:'
          auth: doc.account
          hostname: @cfg.sip_domain_name ? @cfg.host ? 'local'
        }
      gw.name = 'local number'
      gw.local_number = true
      gw.carrier = 'LOCAL'
      gw.source_number = @res.source
      @session.destination_onnet = true
      null

Toolbox

    assert = require 'assert'
    url = require 'url'
    Nimble = require 'nimble-direction'
    CouchDB = require 'most-couchdb'