if if if

buckets.coffee

###
Creates a new bucket for a user using the given parameters (if not already above the user's limit)

@param {Object} user the document of the authenticated user
@param {String} name to be used for the bucket
@param {Number} limit to be used for the bucket (in Byte)
@param {Function} callback gets two parameters - error object (if an error occured) and the new bucket document if successful.

@api public
###
Buckets.prototype.create = (user, name, limit, callback) ->

  c = true
  self = this

  this.list user, (err, info) ->

    if err 
      callback err
      c = false

    # check the bucket name (for already taken)
    if c
      info.buckets.forEach (bucket) ->
        if bucket.name == name
          callback 
            message: "The name \"#{name}\" is already taken."
          c = false

    # check the userlimit
    if c && user.limit != 0

      if (info.totalSize + limit) <= user.limit
        c = true
      else
        max = user.limit - info.totalSize
        callback
          message: "The desired limit of #{limit} exceeds the total limit of #{user.limit} by #{limit-max}. The maximum limit is #{max}."
        c = false
   
    if c
      bucket = 
        name: name
        owner: user._id.toHexString()
        limit: limit
        size: 0

      options =
        safe: true

      self.collection.insert bucket, (err,docs) ->

        if err
          return callback err

        else
          return callback null, docs[0]