configuration = Capistrano::Configuration.respond_to?(:instance) ?
  Capistrano::Configuration.instance(:must_exist) :
  Capistrano.configuration(:must_exist)

configuration.load do
  def with_role(role, &block)
    original, ENV['HOSTS'] = ENV['HOSTS'], find_servers(:roles =>role).map{|d| d.host}.join(",")
    begin
      yield
    ensure
      ENV['HOSTS'] = original 
    end
  end
  
  task :symlink_init_d_script do
    puts "ensuring init_d script is symlinked"
    run "test -L  /etc/init.d/#{application_stub} || #{sudo} ln -s #{script_path}/init_d /etc/init.d/#{application_stub}"
  end

  task :symlink_log_dirs do
    puts "ensuring #{std_log_dir} exists"
    mkdir_unless_exists( std_log_dir )
    puts "setting ownership on #{std_log_dir} & files to #{user}"
    run "#{sudo} chown -R #{user} #{std_log_dir}"

    shared_log_dir = "#{shared_dir}/log"
    puts "ensuring #{shared_log_dir} exists"
    mkdir_unless_exists( shared_log_dir )

    puts "ensuring log dir #{shared_log_dir} is symlinked to #{std_log_dir}"
    symlink_dir( std_log_dir, shared_log_dir )
    puts "setting ownership on #{shared_log_dir} & files to #{user}"
    run "#{sudo} chown -R #{user} #{shared_log_dir}"

    puts "ensuring log dir #{web_dir}/log is symlinked to #{std_log_dir}"
    symlink_dir( std_log_dir, "#{web_dir}/log" )

    puts "setting ownership on log dir & files to #{user}"
    run "#{sudo} chown -R #{user} #{web_dir}/log"

    puts "removing default #{current_path}/log symlink"
    run "#{sudo} rm #{current_path}/log"
  end

  task :symlink_pid_dirs do
    std_pid_dir = "#{web_dir}/tmp/pids"
    shared_pid_dir = "#{shared_dir}/pids"
  
    puts "ensuring #{shared_pid_dir} exists"
    mkdir_unless_exists( shared_pid_dir )
  
    puts "ensuring #{std_pid_dir} exists"
    mkdir_unless_exists( std_pid_dir )

    puts "ensuring pid dir #{std_pid_dir} is symlinked to #{shared_pid_dir}"
    symlink_dir( shared_pid_dir, std_pid_dir )

    puts "setting ownership on #{web_dir}/tmp & files to #{user}"
    run "#{sudo} chown -R #{user} #{web_dir}/tmp"
  
    puts "setting ownership on #{shared_pid_dir} & files to #{user}"
    run "#{sudo} chown -R #{user} #{shared_pid_dir}"
  end

  task :symlink_site_cache_dir do
    puts "Removing existing symlink from /tmp/cache/sites"
    run "(test -d #{web_dir}/tmp/cache && #{sudo} rm -rf #{web_dir}/tmp/cache) || echo 'no existing /tmp/cache dir'"
  
    puts "Creating /shared/cache/sites dir if needed"
    run "mkdir -p #{shared_dir}/cache/sites && #{sudo} chown -R #{user} #{shared_dir}/cache"
  
    puts "Symlinking /shared/cache into /tmp/"
    symlink_dir("#{shared_dir}/cache","#{web_dir}/tmp/cache")
  
  end

  task :regenerate_monit do
    puts "regenerating monit config file"
    run "(test -d #{web_dir}/config/monit && #{sudo} rm -rf #{web_dir}/config/monit/*) || mkdir -p #{web_dir}/config/monit"
    run "cd #{web_dir} && ruby script/generate monit"
    puts "setting permissions & ownership on monit config files"
    run "#{sudo} chmod 0700 #{web_dir}/config/monit/* && #{sudo} chown root #{web_dir}/config/monit/*"
  end

  task :resymlink_monit do  
    std_monit_file = "/etc/monit/conf.d/#{application_stub}"
    puts "re-symlinking monit config"
    run "(test -L #{std_monit_file} && #{sudo} rm #{std_monit_file}) || echo 'no existing link'"
    run "#{sudo} ln -s #{web_dir}/config/monit/monit.`readlink /etc/trigga_config_file | xargs basename`.config #{std_monit_file} "  
  end

  task :reload_monit do
    run "#{sudo} monit reload"
  end

  task :regenerate_logrotate do
    puts "regenerating logrotate config file"
    run "#{sudo} rm #{web_dir}/config/log_rotate/* && cd #{web_dir} && ruby script/generate logrotate"
    puts "setting permissions & ownership on logrotate config files"
    run "#{sudo} chmod 0700 #{web_dir}/config/log_rotate/* && #{sudo} chown root #{web_dir}/config/log_rotate/*"
  end

  task :resymlink_logrotate do
    logrotate_config_file = "#{web_dir}/config/log_rotate/log_rotate.#{File.basename(trigga_config_file)}.config"
    std_logrotate_file = "/etc/logrotate.d/#{application_stub}"
    puts "re-symlinking logrotate config"
    run "(test -L #{std_logrotate_file} && #{sudo} rm #{std_logrotate_file}) || echo nothing to remove"
    run "#{sudo} ln -s #{web_dir}/config/log_rotate/log_rotate.`readlink /etc/trigga_config_file | xargs basename`.config #{std_logrotate_file} "
  end

  task :chown_entire_project_dir do
    puts "chowning entire #{application_stub} dir to #{user}"
    run "#{sudo} chown -R #{user} #{deploy_to}"
  end
end