Capistrano::Configuration.instance.load do

  abort "You must run this using 'bundle exec ...'" unless ENV['BUNDLE_BIN_PATH'] || ENV['BUNDLE_GEMFILE']
  abort "You must set :user before using defaults" unless fetch(:user, nil)
  abort "You must set :repository before using defaults" unless fetch(:repository, nil)
  abort "You must set :branch before using defaults" unless fetch(:branch, nil)
  abort "You must set :deploy_to before using defaults" unless fetch(:deploy_to, nil)

  set :uptodate_scm, :git
  set :uptodate_branch, fetch(:branch)
  #:uptodate_scm_bynary ('git') - path to SCM binary
  #:uptodate_remote_repository ('origin') - remote repository
  #:uptodate_time (60) - time in seconds for checking remote repository
  #:uptodate_behaviour - (:confirm)
  # :confirm - show outdated message and ask to confirm the further execution
  # :abort - show outdated message and abort further execution
  require 'capistrano/uptodate'

  require 'capistrano_colors'
  capistrano_color_matchers = [
    { :match => /command finished/,       :color => :hide,      :prio => 10 },
    { :match => /executing command/,      :color => :blue,      :prio => 10, :attribute => :underscore },
    { :match => /^transaction: commit$/,  :color => :magenta,   :prio => 10, :attribute => :blink },
    { :match => /git/,                    :color => :white,     :prio => 20, :attribute => :reverse },
  ]
  colorize( capistrano_color_matchers )

  #Dynamically skip Capistrano hooks example
  # before 'deploy:update_code', 'db:dump' unless fetch(:skip_dump, false)
  # $ cap staging deploy -S skip_dump=true

  set :keep_releases, 10
  set :use_sudo, false

  set :group, user

  set :protocol, :both

  set :scm, :git
  set :git_enable_submodules, true

  # set deployment strategy
  set :deploy_via, :remote_cache
  set :copy_exclude, %w(.git .svn .DS_Store test doc .gitkeep)
  #set :repository_cache, "cached-copy" # defaults to :shared_path + 'cached-copy/'

  # :forward_agent allows us to avoid using and distributing a deploy key.
  # On problems run 'ssh-add' locally
  # In your /etc/ssh/ssh_config or ~/.ssh/config you need to have ForwardAgent enabled for this to work.
  set :ssh_options, {:port => fetch(:ssh_port, 22), :forward_agent => true, :paranoid => true}

  default_run_options[:pty] = true

  before 'deploy:setup', 'deploy:prepare:database';
  after 'deploy:update', 'deploy:cleanup'

  desc "Show currently deployed revision on server."
  task :revisions, :roles => :app do
    current, previous, latest = current_revision[0,7], previous_revision[0,7], real_revision[0,7]
    puts "\n" << "-"*63
    puts "===== Master Revision: \033[1;33m#{latest}\033[0m\n\n"
    puts "===== [ \033[1;36m#{application.capitalize} - #{stage.capitalize}\033[0m ]"
    puts "=== Deployed Revision: \033[1;32m#{current}\033[0m"
    puts "=== Previous Revision: \033[1;32m#{previous}\033[0m\n\n"

    # If deployed and master are the same, show the difference between the last 2 deployments.
    base_label, new_label, base_rev, new_rev = latest != current ? \
         ["deployed", "master", current, latest] : \
         ["previous", "deployed", previous, current]

    # Show difference between master and deployed revisions.
    if (diff = `git log #{base_rev}..#{new_rev} --oneline`) != ""
      # Colorize refs
      diff.gsub!(/^([a-f0-9]+) /, "\033[1;32m\\1\033[0m - ")
      diff = "    " << diff.gsub("\n", "\n    ") << "\n"
      # Indent commit messages nicely, max 80 chars per line, line has to end with space.
      diff = diff.split("\n").map{|l|l.scan(/.{1,120}/).join("\n"<<" "*14).gsub(/([^ ]*)\n {14}/m,"\n"<<" "*14<<"\\1")}.join("\n")
      puts "=== Difference between #{base_label} revision and #{new_label} revision:\n\n"
      puts diff
    end
  end

  after "deploy", "revisions"
end