Ari and Kirsten

.gitignore

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+# See https://help.github.com/articles/ignoring-files for more about ignoring files.
+#
+# If you find yourself ignoring temporary files generated by your text editor
+# or operating system, you probably want to add a global ignore instead:
+#   git config --global core.excludesfile '~/.gitignore_global'
+
+# Ignore bundler config.
+/.bundle
+
+# Ignore all logfiles and tempfiles.
+/log/*
+/tmp/*
+!/log/.keep
+!/tmp/.keep
+
+# Ignore uploaded files in development
+/storage/*
+!/storage/.keep
+
+.byebug_history
+
+# Ignore master key for decrypting credentials and more.
+/config/master.key

.ruby-version

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+ruby-2.5.1

Gemfile

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+source 'https://rubygems.org'
+git_source(:github) { |repo| "https://github.com/#{repo}.git" }
+
+ruby '2.5.1'
+
+# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
+gem 'rails', '~> 5.2.3'
+# Use postgresql as the database for Active Record
+gem 'pg', '>= 0.18', '< 2.0'
+# Use Puma as the app server
+gem 'puma', '~> 3.11'
+
+
+# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
+# gem 'jbuilder', '~> 2.5'
+# Use Redis adapter to run Action Cable in production
+# gem 'redis', '~> 4.0'
+# Use ActiveModel has_secure_password
+# gem 'bcrypt', '~> 3.1.7'
+
+# Use ActiveStorage variant
+# gem 'mini_magick', '~> 4.8'
+
+# Use Capistrano for deployment
+# gem 'capistrano-rails', group: :development
+
+# Reduces boot times through caching; required in config/boot.rb
+gem 'bootsnap', '>= 1.1.0', require: false
+
+# Use Rack CORS for handling Cross-Origin Resource Sharing (CORS), making cross-origin AJAX possible
+# gem 'rack-cors'
+
+group :development, :test do
+  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
+  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
+end
+
+group :development do
+  gem 'listen', '>= 3.0.5', '< 3.2'
+  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
+  gem 'spring'
+  gem 'spring-watcher-listen', '~> 2.0.0'
+end
+
+
+# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
+gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
+
+group :development, :test do
+  gem 'will_paginate', '~> 3.1.0'
+  gem 'pry-rails'
+end
+
+group :test do
+  gem 'minitest-rails'
+  gem 'minitest-reporters'
+end

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    actioncable (5.2.3)
+      actionpack (= 5.2.3)
+      nio4r (~> 2.0)
+      websocket-driver (>= 0.6.1)
+    actionmailer (5.2.3)
+      actionpack (= 5.2.3)
+      actionview (= 5.2.3)
+      activejob (= 5.2.3)
+      mail (~> 2.5, >= 2.5.4)
+      rails-dom-testing (~> 2.0)
+    actionpack (5.2.3)
+      actionview (= 5.2.3)
+      activesupport (= 5.2.3)
+      rack (~> 2.0)
+      rack-test (>= 0.6.3)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    actionview (5.2.3)
+      activesupport (= 5.2.3)
+      builder (~> 3.1)
+      erubi (~> 1.4)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.0.3)
+    activejob (5.2.3)
+      activesupport (= 5.2.3)
+      globalid (>= 0.3.6)
+    activemodel (5.2.3)
+      activesupport (= 5.2.3)
+    activerecord (5.2.3)
+      activemodel (= 5.2.3)
+      activesupport (= 5.2.3)
+      arel (>= 9.0)
+    activestorage (5.2.3)
+      actionpack (= 5.2.3)
+      activerecord (= 5.2.3)
+      marcel (~> 0.3.1)
+    activesupport (5.2.3)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 0.7, < 2)
+      minitest (~> 5.1)
+      tzinfo (~> 1.1)
+    ansi (1.5.0)
+    arel (9.0.0)
+    bootsnap (1.4.4)
+      msgpack (~> 1.0)
+    builder (3.2.3)
+    byebug (11.0.1)
+    coderay (1.1.2)
+    concurrent-ruby (1.1.5)
+    crass (1.0.4)
+    erubi (1.8.0)
+    ffi (1.10.0)
+    globalid (0.4.2)
+      activesupport (>= 4.2.0)
+    i18n (1.6.0)
+      concurrent-ruby (~> 1.0)
+    listen (3.1.5)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
+      ruby_dep (~> 1.2)
+    loofah (2.2.3)
+      crass (~> 1.0.2)
+      nokogiri (>= 1.5.9)
+    mail (2.7.1)
+      mini_mime (>= 0.1.1)
+    marcel (0.3.3)
+      mimemagic (~> 0.3.2)
+    method_source (0.9.2)
+    mimemagic (0.3.3)
+    mini_mime (1.0.1)
+    mini_portile2 (2.4.0)
+    minitest (5.11.3)
+    minitest-rails (3.0.0)
+      minitest (~> 5.8)
+      railties (~> 5.0)
+    minitest-reporters (1.3.6)
+      ansi
+      builder
+      minitest (>= 5.0)
+      ruby-progressbar
+    msgpack (1.2.10)
+    nio4r (2.3.1)
+    nokogiri (1.10.3)
+      mini_portile2 (~> 2.4.0)
+    pg (1.1.4)
+    pry (0.12.2)
+      coderay (~> 1.1.0)
+      method_source (~> 0.9.0)
+    pry-rails (0.3.9)
+      pry (>= 0.10.4)
+    puma (3.12.1)
+    rack (2.0.7)
+    rack-test (1.1.0)
+      rack (>= 1.0, < 3)
+    rails (5.2.3)
+      actioncable (= 5.2.3)
+      actionmailer (= 5.2.3)
+      actionpack (= 5.2.3)
+      actionview (= 5.2.3)
+      activejob (= 5.2.3)
+      activemodel (= 5.2.3)
+      activerecord (= 5.2.3)
+      activestorage (= 5.2.3)
+      activesupport (= 5.2.3)
+      bundler (>= 1.3.0)
+      railties (= 5.2.3)
+      sprockets-rails (>= 2.0.0)
+    rails-dom-testing (2.0.3)
+      activesupport (>= 4.2.0)
+      nokogiri (>= 1.6)
+    rails-html-sanitizer (1.0.4)
+      loofah (~> 2.2, >= 2.2.2)
+    railties (5.2.3)
+      actionpack (= 5.2.3)
+      activesupport (= 5.2.3)
+      method_source
+      rake (>= 0.8.7)
+      thor (>= 0.19.0, < 2.0)
+    rake (12.3.2)
+    rb-fsevent (0.10.3)
+    rb-inotify (0.10.0)
+      ffi (~> 1.0)
+    ruby-progressbar (1.10.0)
+    ruby_dep (1.5.0)
+    spring (2.0.2)
+      activesupport (>= 4.2)
+    spring-watcher-listen (2.0.1)
+      listen (>= 2.7, < 4.0)
+      spring (>= 1.2, < 3.0)
+    sprockets (3.7.2)
+      concurrent-ruby (~> 1.0)
+      rack (> 1, < 3)
+    sprockets-rails (3.2.1)
+      actionpack (>= 4.0)
+      activesupport (>= 4.0)
+      sprockets (>= 3.0.0)
+    thor (0.20.3)
+    thread_safe (0.3.6)
+    tzinfo (1.2.5)
+      thread_safe (~> 0.1)
+    websocket-driver (0.7.0)
+      websocket-extensions (>= 0.1.0)
+    websocket-extensions (0.1.3)
+    will_paginate (3.1.7)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  bootsnap (>= 1.1.0)
+  byebug
+  listen (>= 3.0.5, < 3.2)
+  minitest-rails
+  minitest-reporters
+  pg (>= 0.18, < 2.0)
+  pry-rails
+  puma (~> 3.11)
+  rails (~> 5.2.3)
+  spring
+  spring-watcher-listen (~> 2.0.0)
+  tzinfo-data
+  will_paginate (~> 3.1.0)
+
+RUBY VERSION
+   ruby 2.5.1p57
+
+BUNDLED WITH
+   2.0.1

Guardfile

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+guard :minitest, autorun: false, spring: true do
+  watch(%r{^app/(.+).rb$})                               { |m| "test/#{m[1]}_test.rb" }
+  watch(%r{^app/controllers/application_controller.rb$}) { 'test/controllers' }
+  watch(%r{^app/controllers/(.+)_controller.rb$})        { |m| "test/integration/#{m[1]}_test.rb" }
+  watch(%r{^app/views/(.+)_mailer/.+})                    { |m| "test/mailers/#{m[1]}_mailer_test.rb" }
+  watch(%r{^lib/(.+).rb$})                               { |m| "test/lib/#{m[1]}_test.rb" }
+  watch(%r{^test/.+_test.rb$})
+  watch(%r{^test/test_helper.rb$}) { 'test' }
+end

Rakefile

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+# 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.
+
+require_relative 'config/application'
+
+Rails.application.load_tasks

app/channels/application_cable/channel.rb

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+module ApplicationCable
+  class Channel < ActionCable::Channel::Base
+  end
+end

app/channels/application_cable/connection.rb

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+module ApplicationCable
+  class Connection < ActionCable::Connection::Base
+  end
+end

app/controllers/application_controller.rb

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+class ApplicationController < ActionController::API
+end

app/controllers/customers_controller.rb

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+class CustomersController < ApplicationController
+  def index
+    if valid?(params)
+      customers = Customer.paginate(page: params[:p], per_page: params[:n]).order(params[:sort])
+
+      render status: :ok, json: customers.as_json(only: [:id, :name, :registered_at, :postal_code, :phone, :movies_checked_out_count])
+    else
+      render status: :bad_request, json: { errors: { "query": ["#{params} not a valid query parameter"] } }
+    end
+  end
+
+  def show
+    customer = Customer.find_by(id: params[:id])
+
+    if customer
+      render status: :ok, json: customer.as_json(only: [:id, :name, :registered_at, :postal_code, :phone, :movies_checked_out_count])
+    else
+      render status: :not_found, json: { errors: { "name": ["Customer #{params[:id]} not found"] } }
+    end
+  end
+
+  private
+
+  def valid?(params)
+    sorts = ["name", "registered_at", "postal_code", nil]
+    return false unless sorts.include?(params[:sort])
+
+    unless params[:p].nil?
+      begin Integer(params[:p]) 
+      rescue ArgumentError
+        return false       
+      end
+    end
+
+    unless params[:n].nil?
+      begin Integer(params[:n])
+      rescue ArgumentError
+        return false       
+      end
+    end
+
+    true
+  end
+end

app/controllers/movies_controller.rb

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+# frozen_string_literal: true
+
+class MoviesController < ApplicationController
+  def zomg
+    render json: { message: 'it works!' }
+  end
+
+  def index
+    if valid?(params)
+      movies = Movie.paginate(page: params[:p], per_page: params[:n]).order(params[:sort])
+      render json: movies.as_json(only: %i[id title release_date])
+    else
+      render json: { ok: false, message: 'Query params not valid' }, status: :not_found
+    end
+  end
+
+  def show
+    movie = Movie.find_by(id: params[:id])
+
+    if movie
+      render json: movie.as_json(only: %i[title overview release_date inventory available_inventory]), status: :ok
+    else
+      render json: { ok: false, message: 'Movie not found' }, status: :not_found
+    end
+  end
+
+  def create
+    movie = Movie.new(movie_params)
+    movie.available_inventory = movie.inventory
+
+    if movie.save
+      render json: movie.as_json(only: %i[title overview release_date inventory id available_inventory]), status: :ok
+    else
+      render json: { ok: false, message: movie.errors.messages }, status: :bad_request
+    end
+  end
+
+  private
+
+  def valid?(params)
+    sorts = ['title', 'release_date', nil]
+    return false unless sorts.include?(params[:sort])
+
+    unless params[:p].nil?
+      begin Integer(params[:p])
+      rescue ArgumentError
+        return false
+      end
+    end
+
+    unless params[:n].nil?
+      begin Integer(params[:n])
+      rescue ArgumentError
+        return false
+      end
+    end
+
+    true
+  end
+
+  def movie_params
+    params.require(:movie).permit(:title, :overview, :release_date, :inventory, :available_inventory)
+  end
+end