initial stab at screenshots

Gemfile

@@ -10,6 +10,9 @@ gem 'sinatra-xsendfile', require: 'sinatra/xsendfile'
 gem 'puma',               require: nil
 gem 'rubyzip'
 gem 'rack-recaptcha',     require: 'rack/recaptcha'
+gem 'rmagick',            require: nil
+gem 'selenium-webdriver', require: nil
+gem 'backburner'
 
 platform :mri do
   gem 'magic' # sudo apt-get install file, For OSX: brew install libmagic

Gemfile.lock

@@ -3,11 +3,18 @@ GEM
   specs:
     addressable (2.3.4)
     ansi (1.4.3)
+    backburner (0.3.4)
+      beaneater (~> 0.3.0)
+      dante (~> 0.1.5)
     bcrypt-ruby (3.0.1)
+    beaneater (0.3.0)
     builder (3.2.0)
+    childprocess (0.3.9)
+      ffi (~> 1.0, >= 1.0.11)
     coderay (1.0.9)
     columnize (0.3.6)
     crack (0.3.2)
+    dante (0.1.5)
     debugger (1.6.0)
       columnize (>= 0.3.1)
       debugger-linecache (~> 1.2.0)
@@ -63,7 +70,13 @@ GEM
     raindrops (0.10.0)
     rake (10.0.4)
     redis (3.0.4)
+    rmagick (2.13.2)
     rubyzip (0.9.9)
+    selenium-webdriver (2.33.0)
+      childprocess (>= 0.2.5)
+      multi_json (~> 1.0)
+      rubyzip
+      websocket (~> 1.0.4)
     sequel (3.47.0)
     sequel_pg (1.6.6)
       pg (>= 0.8.0)
@@ -95,11 +108,13 @@ GEM
     webmock (1.11.0)
       addressable (>= 2.2.7)
       crack (>= 0.3.2)
+    websocket (1.0.7)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
+  backburner
   bcrypt-ruby
   fabrication
   faker
@@ -120,8 +135,10 @@ DEPENDENCIES
   rainbows
   rake
   redis
+  rmagick
   ruby-debug
   rubyzip
+  selenium-webdriver
   sequel
   sequel_pg
   shotgun

Rakefile

@@ -1,4 +1,5 @@
 require "rake/testtask"
+require 'backburner/tasks'
 
 desc "Run all tests"
 Rake::TestTask.new do |t|

app.rb

@@ -143,6 +143,8 @@ post '/site_files/upload' do
   FileUtils.mv params[:newfile][:tempfile].path, dest_path
   File.chmod(0640, dest_path) if self.class.production?
   
+  Backburner.enqueue ScreenshotJob, current_site.username
+
   flash[:success] = "Successfully uploaded file #{sanitized_filename}."
   redirect '/dashboard'
 end
@@ -200,6 +202,9 @@ post '/site_files/save/:filename' do |filename|
 
   FileUtils.mv tmpfile.path, dest_path
   File.chmod(0640, dest_path) if self.class.production?
+
+  Backburner.enqueue ScreenshotJob, current_site.username
+
   'ok'
 end
 

config.yml.template

@@ -3,3 +3,4 @@ development:
   session_secret: SETSOMETHINGHERE
   recaptcha_public_key: ddsfsdfsdf
   recaptcha_private_key: fsdgfdsdfd
+  phantomjs_url: http://localhost:40000

environment.rb

@@ -24,6 +24,8 @@ if defined?(Pry)
   Pry.commands.alias_command 'f', 'finish'
 end
 
+require File.join(DIR_ROOT, 'jobs', 'screenshot_job.rb')
+
 Sequel.datetime_class = Time
 Sequel.extension :pagination
 Sequel.extension :migration

jobs/screenshot_job.rb

@@ -0,0 +1,28 @@
+require 'selenium-webdriver'
+require 'RMagick'
+
+class ScreenshotJob
+  include Backburner::Queue
+
+  queue_priority 1000
+
+  def self.perform(username)
+    screenshot = Tempfile.new 'neocities_screenshot'
+    screenshot.close
+
+    driver = Selenium::WebDriver.for :remote, url: $config['phantomjs_url']
+    driver.manage.window.resize_to 1280, 720
+
+    wait = Selenium::WebDriver::Wait.new(:timeout => 5) # seconds
+    wait.until {
+      driver.navigate.to "http://#{username}.neocities.org"
+      driver.save_screenshot screenshot.path
+    }
+
+    driver.quit
+
+    img = Magick::Image.read(screenshot.path).first
+    img.crop_resized!(600, 400, Magick::NorthGravity)
+    img.write File.join(DIR_ROOT, 'public', 'site_screenshots', "#{user}.jpg")
+  end
+end