require 'active_support'
 

 site_url  = "http://yoursite.com"   # deployed site url for sitemap.xml generator
 port      = "4000"     # preview project port eg. http://localhost:4000
 site      = "site"     # compiled site directory
 source    = "source" # source file directory
 
 ## -- Rsync Deploy config -- ##

 ssh_user      = "user@host.com"    # for rsync deployment
 document_root = "~/document_root/" # for rsync deployment
 ## ---- ##
 

 ## -- Github Pages deploy config -- ##

 # Read http://pages.github.com for guidance

 # If you're not using this, you can remove it
 source_branch = "source" # this compiles to your deploy branch
 deploy_branch = "gh-pages" # For user pages, use "master" for project pages use "gh-pages"
 ## ---- ##

 def ok_failed(condition)
   if (condition)
     puts "OK"
   else
     puts "FAILED"
   end
 end
 

 desc "generate website in output directory"
 task :default => [:generate_site, :generate_style] do

   puts ">>> Site Generating Complete! <<<\n\n"

 end
 

 desc "list tasks"

 task :list do

   puts "Tasks: #{(Rake::Task.tasks - [Rake::Task[:list]]).to_sentence}"

   puts "(type rake -T for more detail)\n\n"
 end
 
 desc "remove files in output directory"
 task :clean do

   puts ">>> Removing output <<<"

   Dir["#{site}/*"].each { |f| rm_rf(f) }
 end
 

 task :clean_debug do

   puts ">>> Removing debug pages <<<"

   Dir["#{site}/test"].each { |f| rm_rf(f) }

 end
 

 desc "Generate styles only"
 task :generate_style do

   puts ">>> Generating styles <<<"

   system "compass"
 end
 
 desc "Generate site files only"

 task :generate_site => [:clean, :generate_style] do

   puts "\n\n>>> Generating site files <<<"

   system "jekyll --pygments"

   system "mv #{site}/atom.html #{site}/atom.xml"

 end
 

 def rebuild_site(relative)

   puts "\n"

   puts ">>> Change Detected to: #{relative} <<<"

   IO.popen('rake generate_site'){|io| print(io.readpartial(512)) until io.eof?}
   puts '>>> Update Complete <<<'
 end
 
 def rebuild_style(relative)

   puts "\n\n>>> Change Detected to: #{relative} <<<"

   IO.popen('rake generate_style'){|io| print(io.readpartial(512)) until io.eof?}

   puts '>>> Update Complete <<<'
 end
 
 desc "Watch the site and regenerate when it changes"
 task :watch do
   require 'fssm'
   puts ">>> Watching for Changes <<<"

   FSSM.monitor do
     path "#{File.dirname(__FILE__)}/#{source}" do
       update {|base, relative| rebuild_site(relative)}
       delete {|base, relative| rebuild_site(relative)}
       create {|base, relative| rebuild_site(relative)}
     end

     path "#{File.dirname(__FILE__)}/stylesheets" do

       glob '**/*.sass'
       update {|base, relative| rebuild_style(relative)}
       delete {|base, relative| rebuild_style(relative)}
       create {|base, relative| rebuild_style(relative)}
     end

   end
 end
 

 desc "generate and deploy website via rsync"

 multitask :deploy_rsync => [:default, :clean_debug] do

   print ">>> Deploying website <<<"

   ok_failed system("rsync -avz --delete #{site}/ #{ssh_user}:#{document_root}")

 end
 

 desc "generate and deploy website to github user pages"

 multitask :deploy_github => [:default, :clean_debug] do

   require 'git'
   repo = Git.open('.')

   repo.branch("#{deploy_branch}").checkout

   (Dir["*"] - [site]).each { |f| rm_rf(f) }

   Dir["#{site}/*"].each {|f| mv(f, ".")}

   rm_rf(site)

   Dir["**/*"].each {|f| repo.add(f) }
   repo.status.deleted.each {|f, s| repo.remove(f)}
   message = ENV["MESSAGE"] || "Site updated at #{Time.now.utc}"
   repo.commit(message)

   repo.push("origin #{deploy_branch}")

   repo.branch("#{source_branch}").checkout

 end
 

 desc "start up an instance of serve on the output files"
 task :start_serve => :stop_serve do
   cd "#{site}" do
     print "Starting serve..."
     ok_failed system("serve #{port} > /dev/null 2>&1 &")
   end
 end
 
 desc "stop all instances of serve"
 task :stop_serve do
   pid = `ps auxw | awk '/bin\\/serve\\ #{port}/ { print $2 }'`.strip
   if pid.empty?
     puts "Serve is not running"
   else
     print "Stoping serve..."
     ok_failed system("kill -9 #{pid}")
   end
 end
 
 desc "preview the site in a web browser"

 multitask :preview => [:default, :start_serve] do

   system "open http://localhost:#{port}"

 end
 
 
 desc "Build an XML sitemap of all html files."

 task :sitemap => :default do

   html_files = FileList.new("#{site}/**/*.html").map{|f| f[("#{site}".size)..-1]}.map do |f|
     if f.ends_with?("index.html")
       f[0..(-("index.html".size + 1))]
     else
       f
     end
   end.sort_by{|f| f.size}
   open("#{site}/sitemap.xml", 'w') do |sitemap|
     sitemap.puts %Q{<?xml version="1.0" encoding="UTF-8"?>}
     sitemap.puts %Q{<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">}
     html_files.each do |f|
       priority = case f
       when %r{^/$}
         1.0
       when %r{^/blog}
         0.9
       else
         0.8
       end
       sitemap.puts %Q{  <url>}
       sitemap.puts %Q{    <loc>#{site_url}#{f}</loc>}
       sitemap.puts %Q{    <lastmod>#{Time.to_s('%Y-%m-%d')}</lastmod>}
       sitemap.puts %Q{    <changefreq>weekly</changefreq>}
       sitemap.puts %Q{    <priority>#{priority}</priority>}
       sitemap.puts %Q{  </url>}
     end
     sitemap.puts %Q{</urlset>}
     puts "Created #{site}/sitemap.xml"
   end

 end