The Superroute!

main.js

var router = express.Router()
  , Response = require('../models/response.js');

// NOTE(jordan): LET'S BUILD TEH SUPERROUTE

router.get('/:program/:pfilter?/:endpoint/:efilter?/:action?', function(req, res) {
  // NOTE(jordan): so many optional parameters!!!
  var program   = req.params.program
    , pfilter   = req.params.pfilter
    , endpoint  = req.params.endpoint
    , efilter   = req.params.efilter
    , action    = req.params.action
    , query;

  var send = function(err, data) {
    if(err) console.log(err) && res.send(500, 'Whoa, popped a gasket. Whoops.');
    if (data == '' || data == [])
      res.send([]);
    else res.send(isNaN(data) ? data : data.toString());
  }

  // NOTE(jordan): all queries should be 'startsWith' and case insensitive
  var rxsi = function (val) { return new RegExp('^' + val, 'i'); }

  if (pfilter && pfilter.indexOf(':') < 0)
    action = efilter, efilter = endpoint, endpoint = pfilter, pfilter = undefined;
  if (efilter && efilter.indexOf(':') < 0)
    action = efilter, efilter = undefined;

  if(endpoint = 'applications') {
    query = Response.find({});
  }

  // TODO(jordan): same for pfilter...

  efilter && efilter.split(',').forEach(function(filterArg) {
    filterArg = filterArg.split(':');
    if (filterArg[0].charAt(0) == '~')
      query = filterArg.length == 2
        ? query[filterArg[0].slice(1)](filterArg[1])
        : query;
    else query = filterArg.length == 2
      ? query.where(filterArg[0]).equals(rxsi(filterArg[1]))
      : query.where(filterArg[0])[filterArg[1]](rxsi(filterArg[2]));
  })

  if (action == 'count') {
    query.count(send);
  } else {
    query.exec(send);
  }
})