require "rubygems"
 require "bundler"
 Bundler.setup
 

 require 'source/_helpers'

 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
 stash       = "_stash"    # directory to stash posts for speedy generation
 posts       = "_posts"    # directory for blog files
 post_format = "markdown"  # file format for new posts when using the post rake task

 
 ## -- 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 = "master" # For user pages, use "master" for project pages use "gh-pages"

 ## ---- ##

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

 ## if you're deploying with github, change the default deploy to deploy_github
 desc "default deploy task"

 task :deploy => [:deploy_rsync] do
 end
 
 desc "Generate and deploy task"
 task :generate_deploy => [:integrate, :generate, :clean_debug, :deploy] do

 end
 

 desc "generate website in output directory"

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

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

 end
 

 # usage rake post[my-new-post] or rake post['my new post'] or rake post (defaults to "new-post")
 desc "Begin a new post in #{source}/_posts"
 task :post, :filename do |t, args|
   args.with_defaults(:filename => 'new-post')

   open("#{source}/_posts/#{Time.now.strftime('%Y-%m-%d_%H-%M')}-#{args.filename.downcase.gsub(/[ _]/, '-')}.#{post_format}", 'w') do |post|

     post.puts "---"
     post.puts "title: \"#{args.filename.gsub(/[-_]/, ' ').titlecase}\""
     post.puts "---"
   end
 end
 

 # usage rake isolate[my-post]
 desc "Move all other posts than the one currently being worked on to a temporary stash location (stash) so regenerating the site happens much quicker."
 task :isolate, :filename do |t, args|
   stash_dir = "#{source}/#{stash}"
   FileUtils.mkdir(stash_dir) unless File.exist?(stash_dir)
   Dir.glob("#{source}/#{posts}/*.*") do |post|
     FileUtils.mv post, stash_dir unless post.include?(args.filename)
   end
 end
 
 desc "Move all stashed posts back into the posts directory, ready for site generation."
 task :integrate do
   FileUtils.mv Dir.glob("#{source}/#{stash}/*.*"), "#{source}/#{posts}/"
 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 compile"

 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\n>>> 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 do

   puts ">>> Deploying website to #{site_url} <<<"

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

 end
 

 desc "generate and deploy website to github user pages"

 multitask :deploy_github do

   puts ">>> Deploying #{deploy_branch} branch to Github Pages <<<"

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

   puts "\n>>> Checking out #{deploy_branch} branch <<<\n"

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

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

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

   rm_rf(site)

   puts "\n>>> Moving generated site files <<<\n"

   Dir["**/*"].each {|f| repo.add(f) }
   repo.status.deleted.each {|f, s| repo.remove(f)}

   puts "\n>>> Commiting: Site updated at #{Time.now.utc} <<<\n"

   message = ENV["MESSAGE"] || "Site updated at #{Time.now.utc}"
   repo.commit(message)

   puts "\n>>> Pushing generated site to #{deploy_branch} branch <<<\n"

   repo.push

   puts "\n>>> Github Pages deploy complete <<<\n"

   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 => [:start_serve] do

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

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

 task :sitemap 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{^/articles}

         0.9
       else
         0.8
       end
       sitemap.puts %Q{  <url>}
       sitemap.puts %Q{    <loc>#{site_url}#{f}</loc>}

       sitemap.puts %Q{    <lastmod>#{Time.now.strftime('%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