module Ona

  class Cli

    def initialize(stack)
      @stack = stack
    end

    def selected_servers string
      @stack.find_all(*string.scan(/\d+/).map { |id| id.to_i })
    end

    def help
      puts "
      Ona -- Deployment simplified.

      deploy 1          # Deploy a specific server
      exit              # Same as *quit*
      help              # Show this help
      http 1            # Open the server in default browser.
      key 1             # Uploads my public ssh-key to remote server (root)
      keys              # Uploads my public ssh-key to all servers (root)
      ls                # Short list for available servers
      quit              # Termintes the ona shell.
      rake              # Shows rake tasks.
      setup 1           # Upload ssh-keys and bootstrap server
      show 1            # Detailed info for a specific server
      ssh 1             # Open a ssh session as *deploy* on remote server (new window)
      ssh# 1            # Open a ssh session as *root* to a remote server (new window)

      --

      Note: 1 is a server id, you can use many ids!

      show 1 2 3        # Will display info for three servers.

      "
    end

    def http string
      selected_servers(string).each do |server|
        system server.to_http
      end
    end

    def key string
      selected_servers(string).each do |server|
        puts 'Setting up key for root'
        system server.setup_ssh
      end
    end


    def show string
      selected_servers(string).each do |server|
        puts server.to_s
      end
    end

    def ls
      @stack.to_a.each do |server|
        puts server.to_short_s
      end
    end

    def ssh_deploy string
      selected_servers(string).each do |server|
        system server.to_ssh 'deploy'
      end
    end

    def ssh_root string
      selected_servers(string).each do |server|
        system server.to_ssh 'root'
      end
    end

    def deploy string
      selected_servers(string).each do |server|
        prompt_for_continuation server
        system server.say_sure_to_deploy
        line = gets
        next unless line.chomp == 'yes'
        system server.deploy
        system server.say_deployed
      end
    end

    def setup string
      key string
      selected_servers(string).each do |server|
        prompt_for_continuation server
        system server.say_sure_to_setup
        line = gets
        next unless line.chomp == 'yes'
        system server.bootstrap
        system server.say_finished_setup
      end
    end

    def rake string
      selected_servers(string).each do |server|
        server.to_s
        server.rake.each do |task|
          puts task
        end
      end
    end

    def keys
      @stack.to_a.each do |server|
        puts 'Setting up key for root'
        system server.setup_ssh
      end
    end

    protected

    def prompt_for_continuation server
      puts server.to_s
      puts 'Type [yes] to continue. or anything else to skip.'
      print 'What to do? >'
    end

  end

end