Yan Matveichuk Test Task

.browserslistrc

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+defaults

.gitignore

@@ -13,4 +13,37 @@ capybara-*.html
 /spec/tmp/*
 **.orig
 rerun.txt
-pickle-email-*.html
+pickle-email-*.html
+# 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 pidfiles, but keep the directory.
+/tmp/pids/*
+!/tmp/pids/
+!/tmp/pids/.keep
+
+
+/public/assets
+.byebug_history
+
+# Ignore master key for decrypting credentials and more.
+/config/master.key
+
+/public/packs
+/public/packs-test
+/node_modules
+/yarn-error.log
+yarn-debug.log*
+.yarn-integrity

.rspec

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+--require spec_helper

.ruby-version

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+ruby-2.7.0

Gemfile

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+source 'https://rubygems.org'
+git_source(:github) { |repo| "https://github.com/#{repo}.git" }
+
+ruby '2.7.0'
+
+gem 'rails', '~> 6.0.3', '>= 6.0.3.6'
+gem 'pg', '>= 0.18', '< 2.0'
+gem 'puma', '~> 4.1'
+gem 'webpacker', '~> 4.0'
+gem 'jbuilder', '~> 2.7'
+gem 'bootsnap', '>= 1.4.2', require: false
+gem 'draper'
+
+group :development do
+  gem 'listen', '~> 3.2'
+end
+
+group :development, :test do
+  gem 'byebug'
+end
+
+group :test do
+  gem 'database_cleaner-active_record'
+  gem 'rspec-rails', '~> 5.0.0'
+  gem 'capybara'
+  gem "factory_bot_rails"
+  gem 'faker'
+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/controllers/application_controller.rb

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+class ApplicationController < ActionController::Base
+end

app/controllers/charges_controller.rb

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+class ChargesController < ApplicationController
+  def index
+    render :index, locals: { view: ChargesViewObject.new(view_object_context) }
+  end
+
+  private
+
+  def view_object_context
+    {
+      successful_charges: ChargeDecorator.decorate_collection(charges_repo.all_by_status(:successful)),
+      failed_charges: ChargeDecorator.decorate_collection(charges_repo.all_by_status(:failed)),
+      disputed_charges: ChargeDecorator.decorate_collection(charges_repo.all_by_status(:disputed))
+    }
+  end
+
+  def charges_repo
+    @charges_repo ||= ChargeRepo.new(model: Charge, customer_model: Customer)
+  end
+end

app/decorators/application_decorator.rb

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+class ApplicationDecorator < Draper::Decorator
+end

app/decorators/charge_decorator.rb

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+class ChargeDecorator < ApplicationDecorator
+  def customer_name
+    helpers.content_tag :p do
+      "Customer name: #{customer.first_name} #{customer.last_name}"
+    end
+  end
+
+  def amount
+    helpers.content_tag :p do
+      "Amount: #{object.amount}"
+    end
+  end
+
+  def created
+    helpers.content_tag :p do
+      "Charge date: #{object.created.strftime('%a %m/%d/%y%l:%M %p')}"
+    end
+  end
+
+  private
+
+  def customer
+    @customer ||= object.customer
+  end
+end

app/javascript/packs/application.js

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+// This file is automatically compiled by Webpack, along with any other files
+// present in this directory. You're encouraged to place your actual application logic in
+// a relevant structure within app/javascript and only use these pack files to reference
+// that code so it'll be compiled.
+import '../stylesheets/charges.css'
+
+require("@rails/ujs").start()
+
+
+
+// Uncomment to copy all static images under ../images to the output folder and reference
+// them with the image_pack_tag helper in views (e.g <%= image_pack_tag 'rails.png' %>)
+// or the `imagePath` JavaScript helper below.
+//
+// const images = require.context('../images', true)
+// const imagePath = (name) => images(name, true)

app/javascript/stylesheets/charges.css

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+.charges {
+    display: flex;
+}
+.charges_block {
+    flex: 1;
+}
+
+.charges_block__list_failed {
+    background-color: #FF0000
+}
+
+.charges_block__list_disputed {
+    background-color: #FF5400
+}
+
+.charges_block__title {
+    text-align: center;
+}

app/models/application_record.rb

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+class ApplicationRecord < ActiveRecord::Base
+  self.abstract_class = true
+end

app/models/charge.rb

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+class Charge < ApplicationRecord
+  USD_CURRENCY = 'USD'.freeze
+
+  belongs_to :customer
+end

app/models/customer.rb

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+class Customer < ApplicationRecord
+  has_many :charges, dependent: :restrict_with_exception
+end

app/repos/application_repo.rb

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+class ApplicationRepo
+  attr_reader :model
+
+  def initialize(model:)
+    @model = model
+  end
+end

app/repos/charge_repo.rb

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+class ChargeRepo < ApplicationRepo
+  CHARGE_STATUSES = {
+    successful: { paid: true, refunded: false },
+    failed: { paid: false, refunded: true },
+    disputed: { paid: false, refunded: false }
+  }.freeze
+
+  attr_reader :customer_model
+
+  def initialize(model:, customer_model: nil)
+    @customer_model = customer_model
+    super(model: model)
+  end
+
+  def create!(customer_id:, amount:, created:, status:)
+    record = build_default(customer_id: customer_id, amount: amount, created: created)
+    record.assign_attributes(CHARGE_STATUSES[status])
+    record.save!
+  end
+
+  def all_by_status(status)
+    model.includes(customer_name).where(CHARGE_STATUSES[status]).references(customer_name).all
+  end
+
+  private
+
+  def customer_name
+    @_customer_name ||= customer_model.name.downcase
+  end
+
+  def build_default(customer_id:, amount:, created:)
+    model.new(
+      paid: true,
+      currency: Charge::USD_CURRENCY,
+      refunded: false,
+      customer_id: customer_id,
+      amount: amount,
+      created: created
+    )
+  end
+end

app/view_objects/application_view_object.rb

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+class ApplicationViewObject < BasicObject
+  attr_reader :context
+
+  def initialize(context)
+    @context = context
+  end
+end

app/view_objects/charges_view_object.rb

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+class ChargesViewObject < ApplicationViewObject
+  def successful_charges
+    {
+      charges: context[:successful_charges],
+      title: 'Successful Charges',
+      id: 'successful-charges',
+      list_class: ''
+    }
+  end
+
+  def failed_charges
+    {
+      charges: context[:failed_charges],
+      title: 'Failed Charges',
+      id: 'failed-charges',
+      list_class: 'charges_block__list_failed'
+    }
+  end
+
+  def disputed_charges
+    {
+      charges: context[:disputed_charges],
+      title: 'Disputed Charges',
+      id: 'disputed-charges',
+      list_class: 'charges_block__list_disputed'
+    }
+  end
+end

app/views/charges/_charges.html.erb

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+<div class="charges_block" id=<%= id %>>
+  <h3 class="charges_block__title"><%= title %></h3>
+
+  <ul>
+    <% charges.each do |charge| %>
+      <li class=<%= list_class %>>
+        <%= charge.customer_name %>
+        <%= charge.amount %>
+        <%= charge.created %>
+      </li>
+    <% end %>
+  </ul>
+</div>

app/views/charges/index.html.erb

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+<div class="charges">
+  <%= render partial: 'charges', locals: view.failed_charges %>
+  <%= render partial: 'charges', locals: view.disputed_charges %>
+  <%= render partial: 'charges', locals: view.successful_charges %>
+</div>

app/views/layouts/application.html.erb

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+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Source</title>
+    <%= csrf_meta_tags %>
+    <%= csp_meta_tag %>
+
+    <%= javascript_pack_tag 'application' %>
+  </head>
+
+  <body>
+    <%= yield %>
+  </body>
+</html>

babel.config.js

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+module.exports = function(api) {
+  var validEnv = ['development', 'test', 'production']
+  var currentEnv = api.env()
+  var isDevelopmentEnv = api.env('development')
+  var isProductionEnv = api.env('production')
+  var isTestEnv = api.env('test')
+
+  if (!validEnv.includes(currentEnv)) {
+    throw new Error(
+      'Please specify a valid `NODE_ENV` or ' +
+        '`BABEL_ENV` environment variables. Valid values are "development", ' +
+        '"test", and "production". Instead, received: ' +
+        JSON.stringify(currentEnv) +
+        '.'
+    )
+  }
+
+  return {
+    presets: [
+      isTestEnv && [
+        '@babel/preset-env',
+        {
+          targets: {
+            node: 'current'
+          }
+        }
+      ],
+      (isProductionEnv || isDevelopmentEnv) && [
+        '@babel/preset-env',
+        {
+          forceAllTransforms: true,
+          useBuiltIns: 'entry',
+          corejs: 3,
+          modules: false,
+          exclude: ['transform-typeof-symbol']
+        }
+      ]
+    ].filter(Boolean),
+    plugins: [
+      'babel-plugin-macros',
+      '@babel/plugin-syntax-dynamic-import',
+      isTestEnv && 'babel-plugin-dynamic-import-node',
+      '@babel/plugin-transform-destructuring',
+      [
+        '@babel/plugin-proposal-class-properties',
+        {
+          loose: true
+        }
+      ],
+      [
+        '@babel/plugin-proposal-object-rest-spread',
+        {
+          useBuiltIns: true
+        }
+      ],
+      [
+        '@babel/plugin-transform-runtime',
+        {
+          helpers: false,
+          regenerator: true,
+          corejs: false
+        }
+      ],
+      [
+        '@babel/plugin-transform-regenerator',
+        {
+          async: false
+        }
+      ]
+    ].filter(Boolean)
+  }
+}

bin/rails

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+#!/usr/bin/env ruby
+APP_PATH = File.expand_path('../config/application', __dir__)
+require_relative '../config/boot'
+require 'rails/commands'

bin/rake

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+#!/usr/bin/env ruby
+require_relative '../config/boot'
+require 'rake'
+Rake.application.run