'use strict'
var url = require('url')
var RouteNode = require('./route-node')
var utils = require('./utils')
var assign = utils.assign
var noop = utils.noop

function Router(options) {
  options = options || {}
  this.routes = new RouteNode()
}

assign(Router.prototype, {
  add: function add(path, handler) {
    return this.routes.add(this._uriToParts(path), handler)
  },

  route: function route(path, done) {
    var parts = this._uriToParts(path)
    done = done || noop
    return this.routes.get(parts, [], function (err, func, context, args) {
      if (err) {
        return done(err)
      } else {
        return done(null, func.apply(context, args))
      }
    })
  },

  _uriToParts: function _uriToParts(uri) {
    return url.parse(uri)
      .pathname
      .split('/')
      .filter(function (str) { return str !== ''})
  }
})

module.exports = Router