Add logic for parsing Gemfile.lock & comparating it to Rubygems

.browserslistrc

@@ -0,0 +1 @@
+defaults

.gitignore

@@ -32,6 +32,7 @@
 !/tmp/storage/.keep
 
 /public/assets
+/public/data
 
 # Ignore master key for decrypting credentials and more.
 /config/master.key
@@ -43,3 +44,8 @@ logfile
 .DS_Store
 config/application.yml
 node_modules
+
+/node_modules
+/yarn-error.log
+yarn-debug.log*
+.yarn-integrity

Gemfile

@@ -9,10 +9,12 @@ gem 'bootsnap', require: false
 gem 'bugsnag'
 gem 'figaro'
 gem 'importmap-rails'
+gem 'progress_bar'
 gem 'pg', '~> 1.1'
 gem 'pry-byebug'
 gem 'pry-rails'
 gem 'puma', '>= 5.0'
+gem 'rails_charts'
 gem 'slim'
 gem 'sprockets-rails'
 gem 'stimulus-rails'

Gemfile.lock

@@ -195,6 +195,7 @@ GEM
       racc (~> 1.4)
     nokogiri (1.16.7-x86_64-linux)
       racc (~> 1.4)
+    options (2.3.2)
     overcommit (0.64.0)
       childprocess (>= 0.6.3, < 6)
       iniparse (~> 1.4)
@@ -206,6 +207,9 @@ GEM
     pastel (0.8.0)
       tty-color (~> 0.5)
     pg (1.5.7)
+    progress_bar (1.3.4)
+      highline (>= 1.6)
+      options (~> 2.3.0)
     pry (0.14.2)
       coderay (~> 1.1)
       method_source (~> 1.0)
@@ -248,6 +252,8 @@ GEM
     rails-html-sanitizer (1.6.0)
       loofah (~> 2.21)
       nokogiri (~> 1.14)
+    rails_charts (0.0.6)
+      rails
     railties (7.1.3.4)
       actionpack (= 7.1.3.4)
       activesupport (= 7.1.3.4)
@@ -395,10 +401,12 @@ DEPENDENCIES
   mina-infinum
   overcommit
   pg (~> 1.1)
+  progress_bar
   pry-byebug
   pry-rails
   puma (>= 5.0)
   rails (~> 7.1.3, >= 7.1.3.2)
+  rails_charts
   rspec-rails
   rubocop-infinum
   slim

app/assets/config/manifest.js

@@ -1,2 +1,3 @@
 //= link_tree ../images
 //= link_directory ../stylesheets .css
+//= link application.js

app/controllers/projects_controller.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+require 'csv'
+
+class ProjectsController < ApplicationController
+  def show
+    project_file_name = Chart::FileStorage.find(params[:id])
+
+    @project = Project.new(
+      project_file_name: project_file_name,
+      data: CSV.read(project_file_name, col_sep: ';').to_h
+    )
+  end
+end

app/domains/chart.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+module Chart
+  def self.generate(**args)
+    generator = Chart::Generator.new(**args).create
+
+    Chart::FileStorage.create(name: generator.project_name, days: generator.days)
+  end
+end

app/domains/chart/day.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+module Chart
+  class Day
+    attr_reader :date
+    attr_reader :outdated_gem_count
+
+    def initialize(date:, outdated_gem_count:)
+      @date = date
+      @outdated_gem_count = outdated_gem_count
+    end
+  end
+end

app/domains/chart/file_storage.rb

@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+module Chart
+  class FileStorage
+    class << self
+      def create(**args)
+        new(**args).create
+      end
+
+      def find(name)
+        file = new(name: name)
+        raise ActiveRecord::RecordNotFound, 'file not found' unless File.exist?(file.file_path)
+
+        file.file_path
+      end
+    end
+
+    attr_reader :name
+
+    def initialize(name:, days: [])
+      @name = name
+      @days = days
+      @file = nil
+    end
+
+    def create
+      self.file = File.open(file_path, 'w') do |file|
+        days.each do |day|
+          file.puts "#{day.date};#{day.outdated_gem_count}"
+        end
+      end
+
+      self
+    end
+
+    def file_path
+      "#{Rails.root}/public/data/#{name}.csv"
+    end
+
+    private
+
+    attr_reader :days
+    attr_writer :file
+  end
+end

app/domains/chart/generator.rb

@@ -0,0 +1,70 @@
+# frozen_string_literal: true
+
+module Chart
+  class Generator
+    attr_reader :days
+
+    def initialize(start_date:, end_date:, repo:)
+      @start_date = start_date
+      @end_date = end_date
+      @repo = repo
+      @days = []
+      @progress = ProgressBar.new((end_date - start_date).to_i + 1)
+    end
+
+    def create
+      self.days = map_days
+
+      self
+    end
+
+    def project_name
+      repo.split('/').last
+    end
+
+    private
+
+    attr_reader :start_date
+    attr_reader :end_date
+    attr_reader :progress
+    attr_reader :repo
+    attr_writer :days
+
+    def map_days
+      previous_sha = nil
+
+      (start_date..end_date).map do |date|
+        sha = `cd #{repo} && git rev-list -1 --before="#{date}" master`.strip
+
+        `cd #{repo} && OVERCOMMIT_DISABLE=1 git checkout #{sha} Gemfile.lock > /dev/null 2>&1` if previous_sha != sha
+
+        count = outdated_gem_count(date)
+        previous_sha = sha
+        progress.increment!
+
+        Day.new(date:, outdated_gem_count: count)
+      end
+    end
+
+    def outdated_gem_count(time)
+      count = 0
+      parser.specs.each do |gem_specification|
+        gem = Rubygem.find_by(name: gem_specification.name)
+        current_version = gem.versions.release.find_by(number: gem_specification.version.to_s)
+        next if current_version.nil? || gem.versions.release.empty?
+
+        count += 1 if gem.versions.release.where(position: ...current_version.position, created_at: ...time).any?
+      end
+
+      count
+    end
+
+    def parser
+      Bundler::LockfileParser.new(gemfile_lock)
+    end
+
+    def gemfile_lock
+      Bundler.read_file("#{repo}/Gemfile.lock")
+    end
+  end
+end

app/javascript/application.js

@@ -0,0 +1,4 @@
+// Configure your import map in config/importmap.rb. Read more: https://github.com/rails/importmap-rails
+
+import "echarts"
+import "echarts/theme/dark"

app/models/project.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class Project
+  include ActiveModel::Model
+
+  attr_accessor :project_file_name, :data
+
+  def name
+    project_file_name.split('/').last.split('.csv').first
+  end
+end

app/models/rubygem.rb

@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+# == Schema Information
+#
+# Table name: rubygems
+#
+#  id         :integer          not null, primary key
+#  name       :string
+#  token      :string
+#  created_at :datetime
+#  updated_at :datetime
+#  user_id    :integer
+#
+class Rubygem < ApplicationRecord
+  has_many :versions, dependent: :destroy
+end

app/models/version.rb

@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+# == Schema Information
+#
+# Table name: versions
+#
+#  id          :integer          not null, primary key
+#  authors     :string
+#  description :text
+#  downloads   :integer          default(0)
+#  number      :string
+#  position    :integer
+#  created_at  :datetime
+#  updated_at  :datetime
+#  rubygem_id  :integer
+#
+# Indexes
+#
+#  index_versions_on_position  (position)
+#
+class Version < ApplicationRecord
+  belongs_to :rubygem
+
+  scope :release, -> { where(prerelease: false) }
+end

app/views/layouts/application.html.erb

@@ -7,6 +7,7 @@
     <%= csp_meta_tag %>
 
     <%= stylesheet_link_tag "application", "data-turbo-track": "reload" %>
+    <%= javascript_importmap_tags %>
   </head>
 
   <body>

app/views/projects/show.slim

@@ -0,0 +1,2 @@
+h1 = @project.name
+= bar_chart @project.data, class: 'box', theme: 'sakura', options: { series: { barWidth: '50%' } }

bin/importmap

@@ -0,0 +1,4 @@
+#!/usr/bin/env ruby
+
+require_relative "../config/application"
+require "importmap/commands"

config/application.rb

@@ -39,6 +39,8 @@ class Application < Rails::Application
     # Don't generate system test files.
     config.generators.system_tests = nil
 
+    routes.default_url_options[:host] = 'http://localhost:3000'
+
     def secrets
       config_for(:secrets)
     end

config/importmap.rb

@@ -0,0 +1,5 @@
+# Pin npm packages by running ./bin/importmap
+
+pin "application", to: "application.js"
+pin "echarts", to: "echarts.min.js"
+pin "echarts/theme/dark", to: "echarts/theme/dark.js"

config/routes.rb

@@ -1,10 +1,3 @@
 Rails.application.routes.draw do
-  # Define your application routes per the DSL in https://guides.rubyonrails.org/routing.html
-
-  # Reveal health status on /up that returns 200 if the app boots with no exceptions, otherwise 500.
-  # Can be used by load balancers and uptime monitors to verify that the app is live.
-  get "up" => "rails/health#show", as: :rails_health_check
-
-  # Defines the root path route ("/")
-  # root "posts#index"
+  resources :projects, only: [:show]
 end

db/migrate/20090527122639_create_rubygems.rb

@@ -0,0 +1,14 @@
+class CreateRubygems < ActiveRecord::Migration[4.2]
+  def self.up
+    create_table :rubygems do |table|
+      table.string :name
+      table.string :token
+      table.integer :user_id
+      table.timestamps
+    end
+  end
+
+  def self.down
+    drop_table :rubygems
+  end
+end

db/migrate/20090527122649_create_versions.rb

@@ -0,0 +1,13 @@
+class CreateVersions < ActiveRecord::Migration[4.2]
+  def change
+    create_table :versions do |table|
+      table.string :authors
+      table.text :description
+      table.integer :downloads, default: 0
+      table.string :number
+      table.integer :rubygem_id
+      table.integer :position, index: true
+      table.timestamps
+    end
+  end
+end