diff --git a/Gemfile b/Gemfile
index 8d98a1a6..97df7455 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 git_source(:github) do |repo_name|
@@ -67,12 +69,16 @@ group :development, :test do
 
   # Environment configuration.
   gem 'dotenv-rails'
+
+  # Ruby linting.
+  gem 'rubocop'
 end
 
 group :test do
   # Include Rspec and other testing utilities.
   gem 'rspec-rails', '~> 3.7'
   gem 'action-cable-testing'
+  gem 'rails-controller-testing'
   gem 'shoulda-matchers', '~> 3.1'
   gem 'faker'
   gem "factory_bot_rails"
diff --git a/Gemfile.lock b/Gemfile.lock
index 0477756c..fe663602 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -41,6 +41,7 @@ GEM
       minitest (~> 5.1)
       tzinfo (~> 1.1)
     arel (7.1.4)
+    ast (2.4.0)
     autoprefixer-rails (8.6.2)
       execjs
     bcrypt (3.1.12)
@@ -84,6 +85,7 @@ GEM
     hashie (3.5.7)
     i18n (1.0.1)
       concurrent-ruby (~> 1.0)
+    jaro_winkler (1.5.1)
     jbuilder (2.7.0)
       activesupport (>= 4.2.0)
       multi_json (>= 1.2)
@@ -133,8 +135,12 @@ GEM
     omniauth-twitter (1.4.0)
       omniauth-oauth (~> 1.1)
       rack
+    parallel (1.12.1)
+    parser (2.5.1.0)
+      ast (~> 2.4.0)
     pg (0.21.0)
     popper_js (1.12.9)
+    powerpack (0.1.2)
     puma (3.11.4)
     rack (2.0.5)
     rack-test (0.6.3)
@@ -151,6 +157,10 @@ GEM
       bundler (>= 1.3.0)
       railties (= 5.0.7)
       sprockets-rails (>= 2.0.0)
+    rails-controller-testing (1.0.2)
+      actionpack (~> 5.x, >= 5.0.1)
+      actionview (~> 5.x, >= 5.0.1)
+      activesupport (~> 5.x)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
@@ -162,6 +172,7 @@ GEM
       method_source
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
+    rainbow (3.0.0)
     rake (12.3.1)
     rb-fsevent (0.10.3)
     rb-inotify (0.9.10)
@@ -184,6 +195,15 @@ GEM
       rspec-mocks (~> 3.7.0)
       rspec-support (~> 3.7.0)
     rspec-support (3.7.1)
+    rubocop (0.57.2)
+      jaro_winkler (~> 1.5.1)
+      parallel (~> 1.10)
+      parser (>= 2.5)
+      powerpack (~> 0.1)
+      rainbow (>= 2.2.2, < 4.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (~> 1.0, >= 1.0.1)
+    ruby-progressbar (1.9.0)
     sass (3.5.6)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
@@ -222,6 +242,7 @@ GEM
       thread_safe (~> 0.1)
     uglifier (4.1.11)
       execjs (>= 0.3.0, < 3)
+    unicode-display_width (1.4.0)
     web-console (3.6.2)
       actionview (>= 5.0)
       activemodel (>= 5.0)
@@ -254,8 +275,10 @@ DEPENDENCIES
   pg (~> 0.18)
   puma (~> 3.0)
   rails (~> 5.0.7)
+  rails-controller-testing
   redis (~> 3.0)
   rspec-rails (~> 3.7)
+  rubocop
   sass-rails (~> 5.0)
   shoulda-matchers (~> 3.1)
   spring
diff --git a/Rakefile b/Rakefile
index e85f9139..488c551f 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Add your own tasks in files placed in lib/tasks ending in .rake,
 # for example lib/tasks/capistrano.rake, and they will automatically be available to Rake.
 
diff --git a/app/channels/application_cable/channel.rb b/app/channels/application_cable/channel.rb
index d6726972..9aec2305 100644
--- a/app/channels/application_cable/channel.rb
+++ b/app/channels/application_cable/channel.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module ApplicationCable
   class Channel < ActionCable::Channel::Base
   end
diff --git a/app/channels/application_cable/connection.rb b/app/channels/application_cable/connection.rb
index 0ff5442f..8d6c2a1b 100644
--- a/app/channels/application_cable/connection.rb
+++ b/app/channels/application_cable/connection.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module ApplicationCable
   class Connection < ActionCable::Connection::Base
   end
diff --git a/app/channels/waiting_channel.rb b/app/channels/waiting_channel.rb
index 8c28e236..318872e8 100644
--- a/app/channels/waiting_channel.rb
+++ b/app/channels/waiting_channel.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class WaitingChannel < ApplicationCable::Channel
   def subscribed
     stream_from "#{params[:uid]}_waiting_channel"
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 91673a70..0f07f83b 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'bigbluebutton_api'
 
 class ApplicationController < ActionController::Base
@@ -43,18 +45,18 @@ class ApplicationController < ActionController::Base
 
   # Determines if a form field needs the is-invalid class.
   def form_is_invalid?(obj, key)
-    'is-invalid' if !obj.errors.messages[key].empty?
+    'is-invalid' unless obj.errors.messages[key].empty?
   end
   helper_method :form_is_invalid?
-  
+
   # Default, unconfigured meeting options.
   def default_meeting_options
+    invite_msg = "To invite someone to the meeting, send them this link:"
     {
       user_is_moderator: false,
       meeting_logout_url: request.base_url + logout_room_path(@room),
       meeting_recorded: true,
-      moderator_message: "To invite someone to the meeting, send them this link:\n\n
-        #{request.base_url + relative_root + room_path(@room)}"
+      moderator_message: "#{invite_msg}\n\n #{request.base_url + relative_root + room_path(@room)}",
     }
   end
 end
diff --git a/app/controllers/errors_controller.rb b/app/controllers/errors_controller.rb
index fd44434d..73c623f0 100644
--- a/app/controllers/errors_controller.rb
+++ b/app/controllers/errors_controller.rb
@@ -1,9 +1,10 @@
+# frozen_string_literal: true
+
 class ErrorsController < ApplicationController
-  
   def not_found
     render status: 404
   end
-  
+
   def unprocessable
     render status: 422
   end
diff --git a/app/controllers/main_controller.rb b/app/controllers/main_controller.rb
index 41632536..b7f7ff97 100644
--- a/app/controllers/main_controller.rb
+++ b/app/controllers/main_controller.rb
@@ -1,6 +1,7 @@
-class MainController < ApplicationController
+# frozen_string_literal: true
 
-  #before_action :redirect_to_room
+class MainController < ApplicationController
+  # before_action :redirect_to_room
 
   # GET /
   def index
diff --git a/app/controllers/rooms_controller.rb b/app/controllers/rooms_controller.rb
index 8180bb36..e8da0d64 100644
--- a/app/controllers/rooms_controller.rb
+++ b/app/controllers/rooms_controller.rb
@@ -1,5 +1,6 @@
-class RoomsController < ApplicationController
+# frozen_string_literal: true
 
+class RoomsController < ApplicationController
   before_action :validate_accepted_terms, unless: -> { !Rails.configuration.terms }
   before_action :find_room, except: :create
   before_action :verify_room_ownership, except: [:create, :show, :join, :logout]
@@ -9,7 +10,7 @@ class RoomsController < ApplicationController
   # POST /
   def create
     redirect_to root_path unless current_user
-    
+
     @room = Room.new(name: room_params[:name])
     @room.owner = current_user
 
@@ -19,9 +20,6 @@ class RoomsController < ApplicationController
       else
         redirect_to @room
       end
-    else
-      # Handle room didn't save.
-
     end
   end
 
@@ -29,7 +27,7 @@ class RoomsController < ApplicationController
   def show
     if current_user && @room.owned_by?(current_user)
       @recordings = @room.recordings
-      @is_running = @room.is_running?
+      @is_running = @room.running?
     else
       render :join
     end
@@ -47,7 +45,7 @@ class RoomsController < ApplicationController
       return
     end
 
-    if @room.is_running?
+    if @room.running?
       if current_user
         redirect_to @room.join_path(current_user.name, opts, current_user.uid)
       else
@@ -92,13 +90,13 @@ class RoomsController < ApplicationController
     current_user.main_room = @room
     current_user.save
 
-    redirect_to @room    
+    redirect_to @room
   end
 
   # POST /:room_uid/:record_id
   def update_recording
     meta = {
-      "meta_#{META_LISTED}" => (params[:state] == "public")
+      "meta_#{META_LISTED}" => (params[:state] == "public"),
     }
 
     res = @room.update_recording(params[:record_id], meta)
@@ -124,12 +122,10 @@ class RoomsController < ApplicationController
 
     if len > 60
       "#{len / 60} hrs"
+    elsif len == 0
+      "< 1 min"
     else
-      if len == 0
-        "< 1 min"
-      else
-        "#{len} min"
-      end
+      "#{len} min"
     end
   end
   helper_method :recording_length
@@ -147,7 +143,7 @@ class RoomsController < ApplicationController
 
   # Ensure the user is logged into the room they are accessing.
   def verify_room_ownership
-    bring_to_room if !@room.owned_by?(current_user)
+    bring_to_room unless @room.owned_by?(current_user)
   end
 
   # Redirects a user to their room.
diff --git a/app/controllers/sessions_controller.rb b/app/controllers/sessions_controller.rb
index deee494e..8f9b0028 100644
--- a/app/controllers/sessions_controller.rb
+++ b/app/controllers/sessions_controller.rb
@@ -1,5 +1,6 @@
-class SessionsController < ApplicationController
+# frozen_string_literal: true
 
+class SessionsController < ApplicationController
   # GET /users/login
   def new
   end
@@ -13,11 +14,8 @@ class SessionsController < ApplicationController
   # POST /users/login
   def create
     user = User.find_by(email: session_params[:email])
-    if user && user.authenticate(session_params[:password])
+    if user.&authenticate(session_params[:password])
       login(user)
-    else
-      # Login unsuccessful, display error message.
-      
     end
   end
 
diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index f7af4543..d231c994 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -1,5 +1,6 @@
-class UsersController < ApplicationController
+# frozen_string_literal: true
 
+class UsersController < ApplicationController
   before_action :find_user, only: [:edit, :update]
   before_action :ensure_unauthenticated, only: [:new, :create]
 
@@ -12,7 +13,7 @@ class UsersController < ApplicationController
     @user.provider = "greenlight"
 
     if @user.save
-     login(@user)
+      login(@user)
     else
       # Handle error on user creation.
       render :new
@@ -61,16 +62,13 @@ class UsersController < ApplicationController
         redirect_to edit_user_path(@user), notice: "Information successfully updated."
       else
         # Append custom errors.
-        errors.each do |k, v| @user.errors.add(k, v) end
+        errors.each { |k, v| @user.errors.add(k, v) }
         render :edit
       end
+    elsif @user.update_attributes(user_params)
+      redirect_to edit_user_path(@user), notice: "Information successfully updated."
     else
-      # Update the core user attributes.
-      if @user.update_attributes(user_params)
-        redirect_to edit_user_path(@user), notice: "Information successfully updated."
-      else
-        render :edit
-      end
+      render :edit
     end
   end
 
@@ -83,7 +81,7 @@ class UsersController < ApplicationController
       redirect_to current_user.main_room
     end
   end
-  
+
   private
 
   def find_user
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 039b657b..4795f423 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module ApplicationHelper
   include MeetingsHelper
 
@@ -12,7 +14,7 @@ module ApplicationHelper
   def omniauth_login_url(provider)
     "#{Rails.configuration.relative_url_root}/auth/#{provider}"
   end
-  
+
   # Determine if Greenlight is configured to allow user signups.
   def allow_user_signup?
     Rails.configuration.allow_user_signup
diff --git a/app/helpers/errors_helper.rb b/app/helpers/errors_helper.rb
index 8e3b415c..4e0bcb87 100644
--- a/app/helpers/errors_helper.rb
+++ b/app/helpers/errors_helper.rb
@@ -1,2 +1,4 @@
+# frozen_string_literal: true
+
 module ErrorsHelper
 end
diff --git a/app/helpers/main_helper.rb b/app/helpers/main_helper.rb
index 826effed..b95f19dc 100644
--- a/app/helpers/main_helper.rb
+++ b/app/helpers/main_helper.rb
@@ -1,2 +1,4 @@
+# frozen_string_literal: true
+
 module MainHelper
 end
diff --git a/app/helpers/meetings_helper.rb b/app/helpers/meetings_helper.rb
index bdf52802..381b3326 100644
--- a/app/helpers/meetings_helper.rb
+++ b/app/helpers/meetings_helper.rb
@@ -1,2 +1,4 @@
+# frozen_string_literal: true
+
 module MeetingsHelper
 end
diff --git a/app/helpers/rooms_helper.rb b/app/helpers/rooms_helper.rb
index 1d0f4c73..60bf7cc6 100644
--- a/app/helpers/rooms_helper.rb
+++ b/app/helpers/rooms_helper.rb
@@ -1,2 +1,4 @@
+# frozen_string_literal: true
+
 module RoomsHelper
 end
diff --git a/app/helpers/sessions_helper.rb b/app/helpers/sessions_helper.rb
index 8b45de68..d5f11bdb 100644
--- a/app/helpers/sessions_helper.rb
+++ b/app/helpers/sessions_helper.rb
@@ -1,11 +1,12 @@
+# frozen_string_literal: true
+
 module SessionsHelper
-  
   # Logs a user into GreenLight.
   def login(user)
     session[:user_id] = user.id
 
     # If there are not terms, or the user has accepted them, go to their room.
-    if !Rails.configuration.terms || user.accepted_terms then
+    if !Rails.configuration.terms || user.accepted_terms
       redirect_to user.main_room
     else
       redirect_to terms_path
diff --git a/app/helpers/users_helper.rb b/app/helpers/users_helper.rb
index 2310a240..4dc909ed 100644
--- a/app/helpers/users_helper.rb
+++ b/app/helpers/users_helper.rb
@@ -1,2 +1,4 @@
+# frozen_string_literal: true
+
 module UsersHelper
 end
diff --git a/app/jobs/application_job.rb b/app/jobs/application_job.rb
index a009ace5..d92ffddc 100644
--- a/app/jobs/application_job.rb
+++ b/app/jobs/application_job.rb
@@ -1,2 +1,4 @@
+# frozen_string_literal: true
+
 class ApplicationJob < ActiveJob::Base
 end
diff --git a/app/jobs/notify_user_waiting_job.rb b/app/jobs/notify_user_waiting_job.rb
index 3c399c5a..e3da86e7 100644
--- a/app/jobs/notify_user_waiting_job.rb
+++ b/app/jobs/notify_user_waiting_job.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class NotifyUserWaitingJob < ApplicationJob
   queue_as :default
 
diff --git a/app/mailers/application_mailer.rb b/app/mailers/application_mailer.rb
index 286b2239..d84cb6e7 100644
--- a/app/mailers/application_mailer.rb
+++ b/app/mailers/application_mailer.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ApplicationMailer < ActionMailer::Base
   default from: 'from@example.com'
   layout 'mailer'
diff --git a/app/models/application_record.rb b/app/models/application_record.rb
index e0f5f7bb..7c4440de 100644
--- a/app/models/application_record.rb
+++ b/app/models/application_record.rb
@@ -1,7 +1,9 @@
+# frozen_string_literal: true
+
 class ApplicationRecord < ActiveRecord::Base
   self.abstract_class = true
-  
+
   def to_param
-    uid  
+    uid
   end
 end
diff --git a/app/models/room.rb b/app/models/room.rb
index 65d5bb5d..52bf5262 100644
--- a/app/models/room.rb
+++ b/app/models/room.rb
@@ -1,5 +1,6 @@
-class Room < ApplicationRecord
+# frozen_string_literal: true
 
+class Room < ApplicationRecord
   before_create :setup
 
   validates :name, presence: true
@@ -8,7 +9,6 @@ class Room < ApplicationRecord
 
   RETURNCODE_SUCCESS = "SUCCESS"
   META_LISTED = "gl-listed"
-  UID_LENGTH = 6
 
   # Determines if a user owns a room.
   def owned_by?(user)
@@ -17,7 +17,7 @@ class Room < ApplicationRecord
   end
 
   # Checks if a room is running on the BigBlueButton server.
-  def is_running?
+  def running?
     bbb.is_meeting_running?(bbb_id)
   end
 
@@ -34,16 +34,11 @@ class Room < ApplicationRecord
       moderatorPW: random_password(12),
       attendeePW: random_password(12),
       moderatorOnlyMessage: options[:moderator_message],
-      "meta_#{META_LISTED}": false
+      "meta_#{META_LISTED}": false,
     }
 
     # Update session info.
-    self.update_attributes(sessions: sessions + 1, last_session: DateTime.now)
-
-    #meeting_options.merge!(
-      #{ "meta_room-id": options[:room_owner],
-      #  "meta_meeting-name": options[:meeting_name]}
-    #) if options[:room_owner]
+    update_attributes(sessions: sessions + 1, last_session: DateTime.now)
 
     # Send the create request.
     begin
@@ -56,7 +51,7 @@ class Room < ApplicationRecord
   # Returns a URL to join a user into a meeting.
   def join_path(name, options = {}, uid = nil)
     # Create the meeting if it isn't running.
-    start_session(options) unless is_running?
+    start_session(options) unless running?
 
     # Set meeting options.
     options[:meeting_logout_url] ||= nil
@@ -64,7 +59,7 @@ class Room < ApplicationRecord
     options[:user_is_moderator] ||= false
     options[:meeting_recorded] ||= false
 
-    return call_invalid_res if !bbb
+    return call_invalid_res unless bbb
 
     # Get the meeting info.
     meeting_info = bbb.get_meeting_info(bbb_id, nil)
@@ -78,30 +73,26 @@ class Room < ApplicationRecord
 
     # Generate the join URL.
     join_opts = {}
-    join_opts.merge!({userID: uid}) if uid
-    join_opts.merge!({joinViaHtml5: true}) if Rails.configuration.html5_enabled
-    
+    join_opts[:userID] = uid if uid
+    join_opts[:joinViaHtml5] = true if Rails.configuration.html5_enabled
+
     bbb.join_meeting_url(bbb_id, name, password, join_opts)
   end
 
   # Notify waiting users that a meeting has started.
   def notify_waiting
-    ActionCable.server.broadcast("#{uid}_waiting_channel", {
-      action: "started"
-    })
+    ActionCable.server.broadcast("#{uid}_waiting_channel", action: "started")
   end
 
   # Retrieves all the users in a room.
   def participants
-    begin
-      res = bbb.get_meeting_info(bbb_id, nil)
-      res[:attendees].map do |att|
-        User.find_by(uid: att[:userID], name: att[:fullName])
-      end
-    rescue BigBlueButton::BigBlueButtonException => exc
-      # The meeting is most likely not running.
-      []
+    res = bbb.get_meeting_info(bbb_id, nil)
+    res[:attendees].map do |att|
+      User.find_by(uid: att[:userID], name: att[:fullName])
     end
+  rescue BigBlueButton::BigBlueButtonException
+    # The meeting is most likely not running.
+    []
   end
 
   # Fetches all recordings for a room.
@@ -120,18 +111,18 @@ class Room < ApplicationRecord
       end
 
       r.delete(:playback)
-    end 
+    end
 
     res[:recordings]
   end
 
   # Fetches a rooms public recordings.
   def public_recordings
-    recordings.select do |r| r[:metadata][:"gl-listed"] == "true" end
+    recordings.select { |r| r[:metadata][:"gl-listed"] == "true" }
   end
 
   def update_recording(record_id, meta)
-    meta.merge!({recordID: record_id})
+    meta[:recordID] = record_id
     bbb.send_api_request("updateRecordings", meta)
   end
 
@@ -153,12 +144,12 @@ class Room < ApplicationRecord
   # Sets a BigBlueButtonApi object for interacting with the API.
   def bbb
     @bbb ||= BigBlueButton::BigBlueButtonApi.new(remove_slash(bbb_endpoint), bbb_secret, "0.8")
-    #@bbb ||= if Rails.configuration.loadbalanced_configuration
-    #  lb_user = retrieve_loadbalanced_credentials(self.room.owner.provider)
-    #  BigBlueButton::BigBlueButtonApi.new(remove_slash(lb_user["apiURL"]), lb_user["secret"], "0.8")
-    #else
-    #  BigBlueButton::BigBlueButtonApi.new(remove_slash(bbb_endpoint), bbb_secret, "0.8")
-    #end
+    # @bbb ||= if Rails.configuration.loadbalanced_configuration
+    #   lb_user = retrieve_loadbalanced_credentials(self.room.owner.provider)
+    #   BigBlueButton::BigBlueButtonApi.new(remove_slash(lb_user["apiURL"]), lb_user["secret"], "0.8")
+    # else
+    #   BigBlueButton::BigBlueButtonApi.new(remove_slash(bbb_endpoint), bbb_secret, "0.8")
+    # end
   end
 
   # Generates a uid for the room and BigBlueButton.
@@ -167,10 +158,15 @@ class Room < ApplicationRecord
     self.bbb_id = Digest::SHA1.hexdigest(Rails.application.secrets[:secret_key_base] + Time.now.to_i.to_s).to_s
   end
 
+  # Generates a three character uid chunk.
+  def uid_chunk
+    charset = ("a".."z").to_a - %w(b i l o s) + ("2".."9").to_a - %w(5 8)
+    (0...3).map { charset.to_a[rand(charset.size)] }.join
+  end
+
   # Generates a random room uid that uses the users name.
   def random_room_uid
-    charset = %w{ 2 3 4 6 7 9 a c d e f g h j k m n p q r t v w x y z}
-    owner.firstname.downcase + "-" + (0...UID_LENGTH).map{ charset.to_a[rand(charset.size)] }.join.insert(UID_LENGTH / 2, "-")
+    [owner.firstname, uid_chunk, uid_chunk].join('-').downcase
   end
 
   # Rereives the loadbalanced BigBlueButton credentials for a user.
@@ -182,7 +178,7 @@ class Room < ApplicationRecord
     uri = encode_bbb_url(
       Rails.configuration.loadbalancer_endpoint,
       Rails.configuration.loadbalancer_secret,
-      {name: provider}
+      name: provider
     )
 
     # Make the request.
@@ -190,7 +186,7 @@ class Room < ApplicationRecord
     http.use_ssl = (uri.scheme == 'https')
     response = http.get(uri.request_uri)
 
-    unless response.kind_of?(Net::HTTPSuccess)
+    unless response.is_a?(Net::HTTPSuccess)
       raise "Error retrieving provider credentials: #{response.code} #{response.message}"
     end
 
@@ -209,7 +205,7 @@ class Room < ApplicationRecord
     encoded_params = OAuth::Helper.normalize(params)
     string = "getUser" + encoded_params + secret
     checksum = OpenSSL::Digest.digest('sha1', string).unpack("H*").first
-    
+
     URI.parse("#{base_url}?#{encoded_params}&checksum=#{checksum}")
   end
 
@@ -220,7 +216,7 @@ class Room < ApplicationRecord
 
   # Generates a random password for a meeting.
   def random_password(length)
-    o = ([('a'..'z'), ('A'..'Z')].map do |i| i.to_a end).flatten
-    ((0...length).map do o[rand(o.length)] end).join
+    charset = ("a".."z").to_a + ("A".."Z").to_a
+    ((0...length).map { charset[rand(charset.length)] }).join
   end
 end
diff --git a/app/models/user.rb b/app/models/user.rb
index 2c63c7b3..a89becb2 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -1,17 +1,18 @@
-class User < ApplicationRecord
+# frozen_string_literal: true
 
+class User < ApplicationRecord
   after_create :initialize_main_room
-  before_save { email.downcase! unless email.nil? }
+  before_save { email.try(:downcase!) }
 
   has_many :rooms
   belongs_to :main_room, class_name: 'Room', foreign_key: :room_id, required: false
 
   validates :name, length: { maximum: 24 }, presence: true
   validates :provider, presence: true
-  validates :image, format: {with: /\.(png|jpg)\Z/i}, allow_blank: true
+  validates :image, format: { with: /\.(png|jpg)\Z/i }, allow_blank: true
   validates :email, length: { maximum: 60 }, allow_blank: true,
                     uniqueness: { case_sensitive: false },
-                    format: {with: /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i }
+                    format: { with: /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i }
 
   validates :password, length: { minimum: 6 }, confirmation: true, if: :greenlight_account?
 
@@ -19,26 +20,15 @@ class User < ApplicationRecord
   has_secure_password(validations: false)
 
   class << self
-    
     # Generates a user from omniauth.
     def from_omniauth(auth)
-      user = find_or_initialize_by(
-        social_uid: auth['uid'],
-        provider: auth['provider']
-      )
-
-      user.name = send("#{auth['provider']}_name", auth)
-      user.username = send("#{auth['provider']}_username", auth)
-      user.email = send("#{auth['provider']}_email", auth)
-      user.image = send("#{auth['provider']}_image", auth)
-
-      user.save!
-      user
-    end
-
-    # Generates a user from a trusted launcher.
-    def from_launch(auth)
-
+      find_or_initialize_by(social_uid: auth['uid'], provider: auth['provider']).tap do |u|
+        u.name = send("#{auth['provider']}_name", auth)
+        u.username = send("#{auth['provider']}_username", auth)
+        u.email = send("#{auth['provider']}_email", auth)
+        u.image = send("#{auth['provider']}_image", auth)
+        u.save!
+      end
     end
 
     private
@@ -80,9 +70,9 @@ class User < ApplicationRecord
   # Retrives a list of all a users rooms that are not the main room, sorted by last session date.
   def secondary_rooms
     secondary = (rooms - [main_room])
-    no_session, session = secondary.partition do |r| r.last_session.nil? end
-    sorted = session.sort_by do |r| r.last_session end
-    session + no_session
+    no_session, session = secondary.partition { |r| r.last_session.nil? }
+    sorted = session.sort_by(&:last_session)
+    sorted + no_session
   end
 
   def firstname
@@ -99,6 +89,6 @@ class User < ApplicationRecord
   def initialize_main_room
     self.uid = "gl-#{(0...12).map { (65 + rand(26)).chr }.join.downcase}"
     self.main_room = Room.create!(owner: self, name: firstname + "'s Room")
-    self.save
+    save
   end
 end
diff --git a/bin/bundle b/bin/bundle
index 66e9889e..58115ecf 100755
--- a/bin/bundle
+++ b/bin/bundle
@@ -1,3 +1,5 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../Gemfile', __FILE__)
 load Gem.bin_path('bundler', 'bundle')
diff --git a/bin/rails b/bin/rails
index 5badb2fd..a3655392 100755
--- a/bin/rails
+++ b/bin/rails
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 begin
   load File.expand_path('../spring', __FILE__)
 rescue LoadError => e
diff --git a/bin/rake b/bin/rake
index d87d5f57..169c9396 100755
--- a/bin/rake
+++ b/bin/rake
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 begin
   load File.expand_path('../spring', __FILE__)
 rescue LoadError => e
diff --git a/bin/setup b/bin/setup
index e620b4da..629e3584 100755
--- a/bin/setup
+++ b/bin/setup
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 require 'pathname'
 require 'fileutils'
 include FileUtils
diff --git a/bin/spring b/bin/spring
index fb2ec2eb..df22d97b 100755
--- a/bin/spring
+++ b/bin/spring
@@ -1,4 +1,5 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
 
 # This file loads spring without using Bundler, in order to be fast.
 # It gets overwritten when you run the `spring binstub` command.
diff --git a/bin/update b/bin/update
index a8e4462f..fdac831b 100755
--- a/bin/update
+++ b/bin/update
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 require 'pathname'
 require 'fileutils'
 include FileUtils
diff --git a/config.ru b/config.ru
index 66285118..d5199a18 100644
--- a/config.ru
+++ b/config.ru
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # This file is used by Rack-based servers to start the application.
 
 require_relative 'config/environment'
diff --git a/config/application.rb b/config/application.rb
index a65ba8f8..ae323d4d 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative 'boot'
 
 require 'rails/all'
@@ -13,12 +15,16 @@ module Greenlight
     # -- all .rb files in that directory are automatically loaded.
 
     # Use custom error routes.
-    config.exceptions_app = self.routes
+    config.exceptions_app = routes
 
     config.loadbalanced_configuration = (ENV["USE_LOADBALANCED_CONFIGURATION"] == "true")
 
     # Setup BigBlueButton configuration.
-    unless config.loadbalanced_configuration
+    if config.loadbalanced_configuration
+      # Fetch credentials from a loadbalancer based on provider.
+      config.loadbalancer_endpoint = ENV["LOADBALANCER_ENDPOINT"]
+      config.loadbalancer_secret = ENV["LOADBALANCER_SECRET"]
+    else
       # Default credentials (test-install.blindsidenetworks.com/bigbluebutton).
       config.bigbluebutton_endpoint_default = "http://test-install.blindsidenetworks.com/bigbluebutton/api/"
       config.bigbluebutton_secret_default = "8cd8ef52e8e101574e400365b55e11a6"
@@ -35,10 +41,6 @@ module Greenlight
 
       # Fix endpoint format if required.
       config.bigbluebutton_endpoint += "api/" unless config.bigbluebutton_endpoint.ends_with?('api/')
-    else
-      # Fetch credentials from a loadbalancer based on provider.
-      config.loadbalancer_endpoint = ENV["LOADBALANCER_ENDPOINT"]
-      config.loadbalancer_secret = ENV["LOADBALANCER_SECRET"]
     end
 
     # Determine if GreenLight should allow non-omniauth signup/login.
diff --git a/config/boot.rb b/config/boot.rb
index 30f5120d..30e594e2 100644
--- a/config/boot.rb
+++ b/config/boot.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../Gemfile', __dir__)
 
 require 'bundler/setup' # Set up gems listed in the Gemfile.
diff --git a/config/environment.rb b/config/environment.rb
index 426333bb..d5abe558 100644
--- a/config/environment.rb
+++ b/config/environment.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Load the Rails application.
 require_relative 'application'
 
diff --git a/config/environments/development.rb b/config/environments/development.rb
index 4b601329..3027e432 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
 
@@ -18,7 +20,7 @@ Rails.application.configure do
 
     config.cache_store = :memory_store
     config.public_file_server.headers = {
-      'Cache-Control' => 'public, max-age=172800'
+      'Cache-Control' => 'public, max-age=172800',
     }
   else
     config.action_controller.perform_caching = false
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 1e6aa690..42d2e076 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
 
@@ -47,7 +49,7 @@ Rails.application.configure do
   config.log_level = :debug
 
   # Prepend all log lines with the following tags.
-  config.log_tags = [ :request_id ]
+  config.log_tags = [:request_id]
 
   # Use a different cache store in production.
   # config.cache_store = :mem_cache_store
@@ -85,9 +87,6 @@ Rails.application.configure do
   config.active_record.dump_schema_after_migration = false
 
   # Set the relative url root for deployment to a subdirectory.
-  if ENV['RELATIVE_URL_ROOT'].present?
-    config.relative_url_root = ENV['RELATIVE_URL_ROOT']
-  else
-    config.relative_url_root = "/"
-  end
+  config.relative_url_root = "/"
+  config.relative_url_root = ENV['RELATIVE_URL_ROOT'] if ENV['RELATIVE_URL_ROOT'].present?
 end
diff --git a/config/environments/test.rb b/config/environments/test.rb
index 30587ef6..0c28efe9 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
 
@@ -15,7 +17,7 @@ Rails.application.configure do
   # Configure public file server for tests with Cache-Control for performance.
   config.public_file_server.enabled = true
   config.public_file_server.headers = {
-    'Cache-Control' => 'public, max-age=3600'
+    'Cache-Control' => 'public, max-age=3600',
   }
 
   # Show full error reports and disable caching.
diff --git a/config/initializers/application_controller_renderer.rb b/config/initializers/application_controller_renderer.rb
index 89d2efab..6d56e439 100644
--- a/config/initializers/application_controller_renderer.rb
+++ b/config/initializers/application_controller_renderer.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Be sure to restart your server when you modify this file.
 
 # ActiveSupport::Reloader.to_prepare do
diff --git a/config/initializers/assets.rb b/config/initializers/assets.rb
index 54a967b3..3d3fd61d 100644
--- a/config/initializers/assets.rb
+++ b/config/initializers/assets.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Be sure to restart your server when you modify this file.
 
 # Version of your assets, change this if you want to expire all your assets.
diff --git a/config/initializers/backtrace_silencers.rb b/config/initializers/backtrace_silencers.rb
index 59385cdf..4b63f289 100644
--- a/config/initializers/backtrace_silencers.rb
+++ b/config/initializers/backtrace_silencers.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Be sure to restart your server when you modify this file.
 
 # You can add backtrace silencers for libraries that you're using but don't wish to see in your backtraces.
diff --git a/config/initializers/cookies_serializer.rb b/config/initializers/cookies_serializer.rb
index 5a6a32d3..ee8dff9c 100644
--- a/config/initializers/cookies_serializer.rb
+++ b/config/initializers/cookies_serializer.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Be sure to restart your server when you modify this file.
 
 # Specify a serializer for the signed and encrypted cookie jars.
diff --git a/config/initializers/filter_parameter_logging.rb b/config/initializers/filter_parameter_logging.rb
index 4a994e1e..7a4f47b4 100644
--- a/config/initializers/filter_parameter_logging.rb
+++ b/config/initializers/filter_parameter_logging.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Be sure to restart your server when you modify this file.
 
 # Configure sensitive parameters which will be filtered from the log file.
diff --git a/config/initializers/html5.rb b/config/initializers/html5.rb
index b5994f85..635767a5 100644
--- a/config/initializers/html5.rb
+++ b/config/initializers/html5.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Send a request to check if the HTML5 client is enabled on the BigBlueButton server.
 uri = URI.parse(Rails.configuration.bigbluebutton_endpoint.gsub('bigbluebutton/api', 'html5client/check'))
 res = Net::HTTP.get_response(uri)
diff --git a/config/initializers/inflections.rb b/config/initializers/inflections.rb
index ac033bf9..dc847422 100644
--- a/config/initializers/inflections.rb
+++ b/config/initializers/inflections.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Be sure to restart your server when you modify this file.
 
 # Add new inflection rules using the following format. Inflections
diff --git a/config/initializers/mime_types.rb b/config/initializers/mime_types.rb
index dc189968..be6fedc5 100644
--- a/config/initializers/mime_types.rb
+++ b/config/initializers/mime_types.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Be sure to restart your server when you modify this file.
 
 # Add new mime types for use in respond_to blocks:
diff --git a/config/initializers/new_framework_defaults.rb b/config/initializers/new_framework_defaults.rb
index dd236b5f..377b6532 100644
--- a/config/initializers/new_framework_defaults.rb
+++ b/config/initializers/new_framework_defaults.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Be sure to restart your server when you modify this file.
 #
 # This file contains migration options to ease your Rails 5.0 upgrade.
diff --git a/config/initializers/omniauth.rb b/config/initializers/omniauth.rb
index cb6a02ca..16f154ad 100644
--- a/config/initializers/omniauth.rb
+++ b/config/initializers/omniauth.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # List of supported Omniauth providers.
 Rails.application.config.providers = [:google, :twitter]
 
@@ -10,8 +12,8 @@ Rails.application.config.middleware.use OmniAuth::Builder do
   provider :twitter, ENV['TWITTER_ID'], ENV['TWITTER_SECRET']
 
   provider :google_oauth2, ENV['GOOGLE_OAUTH2_ID'], ENV['GOOGLE_OAUTH2_SECRET'],
-    scope: ['profile', 'email'],
+    scope: %w(profile email),
     access_type: 'online',
     name: 'google',
     hd: ENV['GOOGLE_OAUTH2_HD'].blank? ? nil : ENV['GOOGLE_OAUTH2_HD']
-end
\ No newline at end of file
+end
diff --git a/config/initializers/session_store.rb b/config/initializers/session_store.rb
index a65e450f..f8324089 100644
--- a/config/initializers/session_store.rb
+++ b/config/initializers/session_store.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Be sure to restart your server when you modify this file.
 
 Rails.application.config.session_store :cookie_store, key: '_greenlight-2_0_session'
diff --git a/config/initializers/terms.rb b/config/initializers/terms.rb
index ebfdb57d..26e5da70 100644
--- a/config/initializers/terms.rb
+++ b/config/initializers/terms.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Load terms and conditions.
 
 terms = "#{Rails.root}/config/terms.txt"
diff --git a/config/initializers/wrap_parameters.rb b/config/initializers/wrap_parameters.rb
index bbfc3961..2f3c0db4 100644
--- a/config/initializers/wrap_parameters.rb
+++ b/config/initializers/wrap_parameters.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Be sure to restart your server when you modify this file.
 
 # This file contains settings for ActionController::ParamsWrapper which
diff --git a/config/puma.rb b/config/puma.rb
index c7f311f8..991c3a6f 100644
--- a/config/puma.rb
+++ b/config/puma.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Puma can serve each request in a thread from an internal thread pool.
 # The `threads` method setting takes two numbers a minimum and maximum.
 # Any libraries that use thread pools should be configured to match
diff --git a/config/routes.rb b/config/routes.rb
index 047f1d46..924b1191 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,5 +1,6 @@
-Rails.application.routes.draw do
+# frozen_string_literal: true
 
+Rails.application.routes.draw do
   # Error routes.
   match '/404', to: 'errors#not_found', via: :all
   match '/422', to: 'errors#unprocessable', via: :all
@@ -15,7 +16,7 @@ Rails.application.routes.draw do
 
     # Handles login of greenlight provider accounts.
     post '/login',  to: 'sessions#create', as: :create_session
-  
+
     # Log the user out of the session.
     get '/logout', to: 'sessions#destroy'
 
@@ -39,7 +40,7 @@ Rails.application.routes.draw do
     post '/start', to: 'rooms#start', as: :start_room
     get '/logout', to: 'rooms#logout', as: :logout_room
     post '/home', to: 'rooms#home', as: :make_home
-    
+
     # Mange recordings.
     scope '/:record_id' do
       post '/', to: 'rooms#update_recording', as: :update_recording
diff --git a/config/spring.rb b/config/spring.rb
index c9119b40..ff5ba06b 100644
--- a/config/spring.rb
+++ b/config/spring.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 %w(
   .ruby-version
   .rbenv-vars
diff --git a/db/migrate/20180504131648_create_users.rb b/db/migrate/20180504131648_create_users.rb
index f919e286..74dd9bf3 100644
--- a/db/migrate/20180504131648_create_users.rb
+++ b/db/migrate/20180504131648_create_users.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class CreateUsers < ActiveRecord::Migration[5.0]
   def change
     create_table :users do |t|
diff --git a/db/migrate/20180504131705_create_rooms.rb b/db/migrate/20180504131705_create_rooms.rb
index 995d108e..5d946354 100644
--- a/db/migrate/20180504131705_create_rooms.rb
+++ b/db/migrate/20180504131705_create_rooms.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class CreateRooms < ActiveRecord::Migration[5.0]
   def change
     create_table :rooms do |t|
diff --git a/db/seeds.rb b/db/seeds.rb
index 1beea2ac..ebd18895 100644
--- a/db/seeds.rb
+++ b/db/seeds.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # This file should contain all the record creation needed to seed the database with its default values.
 # The data can then be loaded with the rails db:seed command (or created alongside the database with db:setup).
 #
diff --git a/lib/tasks/configuration.rake b/lib/tasks/configuration.rake
index 4beb92ec..bb15c066 100644
--- a/lib/tasks/configuration.rake
+++ b/lib/tasks/configuration.rake
@@ -1,11 +1,13 @@
+# frozen_string_literal: true
+
 require 'net/http'
 require 'nokogiri'
 require 'digest/sha1'
 
-namespace :conf  do
+namespace :conf do
   desc "Check Configuration"
-  task :check => :environment do
-    ENV_VARIABLES = ['SECRET_KEY_BASE', 'BIGBLUEBUTTON_ENDPOINT', 'BIGBLUEBUTTON_SECRET']
+  task check: :environment do
+    ENV_VARIABLES = %w(SECRET_KEY_BASE BIGBLUEBUTTON_ENDPOINT BIGBLUEBUTTON_SECRET)
 
     # Initial check that variables are set
     print "\nChecking environment"
@@ -31,17 +33,15 @@ end
 
 # takes the full URL including the protocol
 def test_request(url)
-  begin
-    uri = URI(url)
-    res = Net::HTTP.get(uri)
+  uri = URI(url)
+  res = Net::HTTP.get(uri)
 
-    doc = Nokogiri::XML(res)
-    if doc.css("returncode").text != "SUCCESS"
-      failed("Could not get a valid response from BigBlueButton server - #{res}")
-    end
-  rescue => exc
-    failed("Error connecting to BigBlueButton server - #{exc}")
+  doc = Nokogiri::XML(res)
+  if doc.css("returncode").text != "SUCCESS"
+    failed("Could not get a valid response from BigBlueButton server - #{res}")
   end
+rescue => exc
+  failed("Error connecting to BigBlueButton server - #{exc}")
 end
 
 def failed(msg)
@@ -49,6 +49,6 @@ def failed(msg)
   exit
 end
 
-def passed()
+def passed
   print(": Passed\n")
 end
diff --git a/spec/factories.rb b/spec/factories.rb
index 6cf52189..d99ff9d0 100644
--- a/spec/factories.rb
+++ b/spec/factories.rb
@@ -1,10 +1,11 @@
+# frozen_string_literal: true
+
 FactoryBot.define do
-  
   factory :user do
     password = Faker::Internet.password(8)
 
     provider { %w(greenlight google twitter).sample }
-    uid { rand(10 ** 8) }
+    uid { rand(10**8) }
     name { Faker::Name.first_name }
     username { Faker::Internet.user_name }
     email { Faker::Internet.email }
diff --git a/spec/models/room_spec.rb b/spec/models/room_spec.rb
index 7e9361a0..12f0df90 100644
--- a/spec/models/room_spec.rb
+++ b/spec/models/room_spec.rb
@@ -1,12 +1,13 @@
+# frozen_string_literal: true
+
 require "rails_helper"
 require 'bigbluebutton_api'
 
 describe Room, type: :model do
-
-  before {
+  before do
     @user = create(:user)
     @room = @user.main_room
-  }
+  end
 
   context 'validations' do
     it { should validate_presence_of(:name) }
@@ -45,14 +46,14 @@ describe Room, type: :model do
     end
   end
 
-  context "#is_running?" do
+  context "#running?" do
     it "should return false when not running" do
-      expect(@room.is_running?).to be false
+      expect(@room.running?).to be false
     end
 
     it "should return true when running" do
       allow_any_instance_of(BigBlueButton::BigBlueButtonApi).to receive(:is_meeting_running?).and_return(true)
-      expect(@room.is_running?).to be true
+      expect(@room.running?).to be true
     end
   end
 
@@ -60,11 +61,9 @@ describe Room, type: :model do
     it "should update latest session info" do
       allow_any_instance_of(BigBlueButton::BigBlueButtonApi).to receive(:create_meeting).and_return(true)
 
-      expect{
+      expect do
         @room.start_session
-      }.to change {
-        @room.sessions
-      }.by(1)
+      end.to change { @room.sessions }.by(1)
 
       expect(@room.last_session.utc.to_i).to eq(Time.now.to_i)
     end
@@ -72,33 +71,31 @@ describe Room, type: :model do
 
   context "#join_path" do
     it "should return correct join URL for user" do
-      allow_any_instance_of(BigBlueButton::BigBlueButtonApi).to receive(:get_meeting_info).and_return({
+      allow_any_instance_of(BigBlueButton::BigBlueButtonApi).to receive(:get_meeting_info).and_return(
         attendeePW: "testpass"
-      })
+      )
 
       endpoint = Rails.configuration.bigbluebutton_endpoint
       secret = Rails.configuration.bigbluebutton_secret
       fullname = "fullName=Example"
-      html = if Rails.configuration.html5_enabled then "&joinViaHtml5=true" else "" end
-      meetingID = "&meetingID=#{@room.bbb_id}"
+      html = Rails.configuration.html5_enabled ? "&joinViaHtml5=true" : ""
+      meeting_id = "&meetingID=#{@room.bbb_id}"
       password = "&password=testpass"
 
-      query = fullname + html + meetingID + password
+      query = fullname + html + meeting_id + password
       checksum_string = "join#{query + secret}"
 
       checksum = OpenSSL::Digest.digest('sha1', checksum_string).unpack("H*").first
 
-      expect(@room.join_path("Example")).to eql(
-        "#{endpoint}join?#{query}&checksum=#{checksum}"
-      )
+      expect(@room.join_path("Example")).to eql("#{endpoint}join?#{query}&checksum=#{checksum}")
     end
   end
 
   context "#notify_waiting" do
     it "should broadcast to waiting channel with started action" do
-      expect{
+      expect do
         @room.notify_waiting
-      }.to have_broadcasted_to("#{@room.uid}_waiting_channel").with(a_hash_including(action: "started"))
+      end.to have_broadcasted_to("#{@room.uid}_waiting_channel").with(a_hash_including(action: "started"))
     end
   end
 
@@ -107,13 +104,13 @@ describe Room, type: :model do
       user1 = create(:user)
       user2 = create(:user)
 
-      allow_any_instance_of(BigBlueButton::BigBlueButtonApi).to receive(:get_meeting_info).and_return({
+      allow_any_instance_of(BigBlueButton::BigBlueButtonApi).to receive(:get_meeting_info).and_return(
         attendees: [
-          {userID: user1.uid, fullName: user1.name},
-          {userID: "non-matching-uid", fullName: "Guest User"},
-          {userID: user2.uid, fullName: user2.name}
-        ]
-      })
+          { userID: user1.uid, fullName: user1.name },
+          { userID: "non-matching-uid", fullName: "Guest User" },
+          { userID: user2.uid, fullName: user2.name },
+        ],
+      )
 
       expect(@room.participants).to contain_exactly(user1, nil, user2)
     end
@@ -121,21 +118,21 @@ describe Room, type: :model do
 
   context "#recordings" do
     it "should properly find meeting recordings" do
-      allow_any_instance_of(BigBlueButton::BigBlueButtonApi).to receive(:get_recordings).and_return({
+      allow_any_instance_of(BigBlueButton::BigBlueButtonApi).to receive(:get_recordings).and_return(
         recordings: [
           {
             name: "Example",
             playback: {
-              format: "presentation"
-            }
+              format: "presentation",
+            },
           },
-        ]
-      })
+        ],
+      )
 
-      expect(@room.recordings).to contain_exactly({
+      expect(@room.recordings).to contain_exactly(
         name: "Example",
-        playbacks: ["presentation"]
-      })
+        playbacks: %w(presentation),
+      )
     end
   end
 end
diff --git a/spec/models/user_spec.rb b/spec/models/user_spec.rb
index b5aef16c..cb0b497c 100644
--- a/spec/models/user_spec.rb
+++ b/spec/models/user_spec.rb
@@ -1,7 +1,11 @@
+# frozen_string_literal: true
+
 require "rails_helper"
 
 describe User, type: :model do
-  before { @user = create(:user) }
+  before do
+    @user = create(:user)
+  end
 
   context 'validations' do
     it { should validate_presence_of(:name) }
@@ -21,8 +25,8 @@ describe User, type: :model do
     it { should allow_value("", nil).for(:image) }
 
     it "should convert email to downcase on save" do
-      user = create(:user, email: "EXAMPLE@EXAMPLE.COM")
-      expect(user.email).to eq("example@example.com")
+      user = create(:user, email: "DOWNCASE@DOWNCASE.COM")
+      expect(user.email).to eq("downcase@downcase.com")
     end
 
     context 'is greenlight account' do
@@ -63,11 +67,11 @@ describe User, type: :model do
           "name" => "Test Name",
           "nickname" => "username",
           "email" => "test@example.com",
-          "image" => "example.png"
-        }
+          "image" => "example.png",
+        },
       }
-  
-      expect {
+
+      expect do
         user = User.from_omniauth(auth)
 
         expect(user.name).to eq("Test Name")
@@ -75,9 +79,7 @@ describe User, type: :model do
         expect(user.image).to eq("example.png")
         expect(user.provider).to eq("twitter")
         expect(user.social_uid).to eq("123456789")
-      }.to change {
-        User.count
-      }.by(1)
+      end.to change { User.count }.by(1)
     end
   end
 
diff --git a/spec/rails_helper.rb b/spec/rails_helper.rb
index 853cb7e1..26bffbde 100644
--- a/spec/rails_helper.rb
+++ b/spec/rails_helper.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # This file is copied to spec/ when you run 'rails generate rspec:install'
 require 'spec_helper'
 
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 67faf007..979abe7c 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'faker'
 require 'factory_bot_rails'
 
@@ -50,53 +52,42 @@ RSpec.configure do |config|
   # Include FactoryGirl.
   config.include FactoryBot::Syntax::Methods
 
-# The settings below are suggested to provide a good initial experience
-# with RSpec, but feel free to customize to your heart's content.
-=begin
+  # The settings below are suggested to provide a good initial experience
+  # with RSpec, but feel free to customize to your heart's content.
+
   # This allows you to limit a spec run to individual examples or groups
   # you care about by tagging them with `:focus` metadata. When nothing
   # is tagged with `:focus`, all examples get run. RSpec also provides
   # aliases for `it`, `describe`, and `context` that include `:focus`
   # metadata: `fit`, `fdescribe` and `fcontext`, respectively.
-  config.filter_run_when_matching :focus
+  # config.filter_run_when_matching :focus
 
   # Allows RSpec to persist some state between runs in order to support
   # the `--only-failures` and `--next-failure` CLI options. We recommend
   # you configure your source control system to ignore this file.
-  config.example_status_persistence_file_path = "spec/examples.txt"
+  # config.example_status_persistence_file_path = "spec/examples.txt"
 
   # Limits the available syntax to the non-monkey patched syntax that is
   # recommended. For more details, see:
   #   - http://rspec.info/blog/2012/06/rspecs-new-expectation-syntax/
   #   - http://www.teaisaweso.me/blog/2013/05/27/rspecs-new-message-expectation-syntax/
   #   - http://rspec.info/blog/2014/05/notable-changes-in-rspec-3/#zero-monkey-patching-mode
-  config.disable_monkey_patching!
-
-  # Many RSpec users commonly either run the entire suite or an individual
-  # file, and it's useful to allow more verbose output when running an
-  # individual spec file.
-  if config.files_to_run.one?
-    # Use the documentation formatter for detailed output,
-    # unless a formatter has already been configured
-    # (e.g. via a command-line flag).
-    config.default_formatter = "doc"
-  end
+  # config.disable_monkey_patching!
 
   # Print the 10 slowest examples and example groups at the
   # end of the spec run, to help surface which specs are running
   # particularly slow.
-  config.profile_examples = 10
+  # config.profile_examples = 10
 
   # Run specs in random order to surface order dependencies. If you find an
   # order dependency and want to debug it, you can fix the order by providing
   # the seed, which is printed after each run.
   #     --seed 1234
-  config.order = :random
+  # config.order = :random
 
   # Seed global randomization in this process using the `--seed` CLI option.
   # Setting this allows you to use `--seed` to deterministically reproduce
   # test failures related to randomization by passing the same `--seed` value
   # as the one that triggered the failure.
-  Kernel.srand config.seed
-=end
-end
\ No newline at end of file
+  # Kernel.srand config.seed
+end
diff --git a/spec/support/shoulda_matchers.rb b/spec/support/shoulda_matchers.rb
index e5f3a067..37cafb19 100644
--- a/spec/support/shoulda_matchers.rb
+++ b/spec/support/shoulda_matchers.rb
@@ -1,9 +1,10 @@
-# Configure Shoulda-Matchers.
+# frozen_string_literal: true
 
+# Configure Shoulda-Matchers.
 Shoulda::Matchers.configure do |config|
   config.integrate do |with|
     with.test_framework :rspec
-    
+
     with.library :rails
   end
 end