[Third] add progress bars

Author: Nikita

Gemfile

@@ -7,4 +7,5 @@ gem 'ruby-prof'
 gem 'vernier', '~> 1.0'
 gem 'rspec'
 gem 'byebug'
-gem 'oj'
+gem 'oj'
+gem 'progressbar'

Gemfile.lock

@@ -8,6 +8,7 @@ GEM
       bigdecimal (>= 3.0)
       ostruct (>= 0.2)
     ostruct (0.6.1)
+    progressbar (1.13.0)
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)
@@ -32,6 +33,7 @@ PLATFORMS
 DEPENDENCIES
   byebug
   oj
+  progressbar
   rspec
   ruby-prof
   stackprof

main.rb

@@ -1,10 +1,16 @@
+require 'progressbar'
+
 class Main
   PARTIAL_VOLUME_FILE_NAME = "dataN.txt"
 
   def initialize(options: {})
     @source_file_name = options[:source_file_name] || 'data_large.txt'
     @count_lines = options[:count_lines]
     @with_gc = options[:with_gc] || true
+    @read_progress_bar = options[:with_progress_bar] ? ProgressBar.create(title: "Read") : nil
+    @process_file_progress_bar = options[:with_progress_bar] ? ProgressBar.create(title: "Process file") : nil
+    @collect_report_progress_bar = options[:with_progress_bar] ? ProgressBar.create(title: "Collect report") : nil
+    @write_to_result_file_progress_bar = options[:with_progress_bar] ? ProgressBar.create(title: "Write to result file") : nil
   end
 
   def call
@@ -15,11 +21,12 @@ def call
 
   private
 
-  attr_reader :source_file_name, :count_lines, :with_gc
+  attr_reader :source_file_name, :count_lines, :with_gc, :read_progress_bar, :process_file_progress_bar, :collect_report_progress_bar, :write_to_result_file_progress_bar
 
   def work
     `head -n #{count_lines} #{source_file_name} > #{PARTIAL_VOLUME_FILE_NAME}` if count_lines
     file_lines = File.read(count_lines ? PARTIAL_VOLUME_FILE_NAME : source_file_name).split("\n")
+    read_progress_bar&.progress = 100
 
     users = []
     sessions = []
@@ -34,7 +41,7 @@ def work
         sessions << session
       end
     end
-  
+    process_file_progress_bar&.progress = 100
     # Отчёт в json
     #   - Сколько всего юзеров +
     #   - Сколько всего уникальных браузеров +
@@ -104,13 +111,15 @@ def work
     collect_stats_from_users(report, users_objects) do |user|
       { 'alwaysUsedChrome' => user.sessions.map{|s| s['browser']}.all? { |b| b.upcase =~ /CHROME/ } }
     end
-  
+
     # Даты сессий через запятую в обратном порядке в формате iso8601
     collect_stats_from_users(report, users_objects) do |user|
       { 'dates' => user.sessions.map{|s| s['date']}.map {|d| Date.strptime(d, '%Y-%m-%d')}.sort.reverse.map { |d| d.iso8601 } }
     end
+    collect_report_progress_bar&.progress = 100
 
     File.write('result.json', "#{report.to_json}\n")
+    write_to_result_file_progress_bar&.progress = 100
   end
 
   def parse_user(fields)