Implement downloading progress

Gemfile

@@ -10,3 +10,6 @@ git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }
 
 gem 'rake', '~> 13.0'
 gem 'rubocop', '~> 1.7', require: false
+
+gem 'progressbar', '~> 1.11'
+gem 'term-ansicolor', '~> 1.7'

Gemfile.lock

@@ -6,6 +6,7 @@ GEM
     parallel (1.22.1)
     parser (3.1.2.1)
       ast (~> 2.4.1)
+    progressbar (1.11.0)
     rainbow (3.1.1)
     rake (13.0.6)
     regexp_parser (2.6.0)
@@ -23,14 +24,21 @@ GEM
     rubocop-ast (1.23.0)
       parser (>= 3.1.1.0)
     ruby-progressbar (1.11.0)
+    sync (0.5.0)
+    term-ansicolor (1.7.1)
+      tins (~> 1.0)
+    tins (1.32.1)
+      sync
     unicode-display_width (2.3.0)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
+  progressbar (~> 1.11)
   rake (~> 13.0)
   rubocop (~> 1.7)
+  term-ansicolor (~> 1.7)
 
 BUNDLED WITH
    2.2.33

lib/download.rb

@@ -8,6 +8,8 @@ require_relative '../config/config'
 require_relative 'package'
 require 'net/http'
 require 'pathname'
+require 'progressbar'
+require 'term/ansicolor'
 
 module SlackBuilder
   extend Rake::FileUtilsExt
@@ -28,16 +30,22 @@ module SlackBuilder
   end
 end
 
+def write_chunk(response, checksum, progressbar, io)
+  response.read_body do |chunk|
+    progressbar.progress += chunk.length
+    io << chunk
+    checksum << chunk
+  end
+end
+
 def write_download(target, response)
   checksum = Digest::MD5.new
+  progressbar = ProgressBar.create title: target, total: response.header.content_length
 
   File.open target, 'w' do |io|
-    response.read_body do |chunk|
-      print '.'
-      io << chunk
-      checksum << chunk
-    end
+    write_chunk response, checksum, progressbar, io
   end
+  progressbar.finish
 
   checksum
 end
@@ -63,7 +71,7 @@ def start_download(uri, target, http)
 end
 
 def download(uri, target)
-  print "Downloading #{uri} "
+  print Term::ANSIColor.green "Downloading #{uri} "
   checksum = nil
 
   Net::HTTP.start(uri.host, uri.port, use_ssl: uri.scheme == 'https') do |http|