little mongo wrapper for node.js

mongo_wrapper.coffee

mongodb = require 'mongodb'
db = {}
options = {} 

check_for_errors = (err)->
    if err then console.log "#{err}"

# configurate and connect to the database, `options` must be an object
# literal
#
#     db  : <string>
#     host: <string>
#     port: <int>
#     user: <optional:string>
#     pwd : <optional:string>
#
exports.ready = (callback)-> 
  db.open (err, client)->
    # authentication
    if options.user? and options.pwd?
      db.authenticate options.user, options.pwd, (err)->
        check_for_errors err
        callback()
    else
      callback()

exports.config = (opts)->
  options = opts
  server = new mongodb.Server options.host, options.port, auto_reconnect: true
  db     = new mongodb.Db options.db, server, {}
  @

# appends a collection, to the module
exports.collection = (collection)->
  db.collection collection, (err, col)-> exports[collection] = col
  @

exports.db = db


# Usage
#
#     db = require('./mongo')

#     db.config
#       db: 'industrials'
#       host: 'localhost'
#       port: 27017
#
#     db.ready ->

#       db.collection 'daily'

#       db.daily.find {symbol: 'IBM'}, (err, results)->
#         results.toArray (err, docs)->
#           console.log docs