/**
 * Module dependencies.
 */
var scripts = require('../utils/scripts')
    , path = require('path')
    , fs = require('fs')
    , existsSync = fs.existsSync || path.existsSync; // node <=0.6


/**
 * Route drawing phase.
 *
 * This phase will `require` a routes file, allowing the application to draw its
 * routes.
 *
 * This phase is typically the last phase before instructing the server to
 * listen.  Any initializers should be run prior to drawing routes, ensuring
 * that the application is fully prepared to handle requests.
 *
 * Examples:
 *
 *   app.phase(bootable.routes('routes.js'));
 *
 * @param {String|Object} options
 * @return {Function}
 * @api public
 */
module.exports = function (options) {
    if ('string' == typeof options) {
        options = { filename: options };
    }
    options = options || {};
    var filename = options.filename || 'routes'
        , extensions = options.extensions;

    return function routes() {
        var script = scripts.resolve(path.resolve(filename), extensions);

        if (!existsSync(script)) { return; }
        require(script).call(this);
    };
};