require 'tty/command'
require 'tty/prompt'
require 'tty/which'

require 'toolrack'

require_relative 'command_result'

module Dockerun
  module Cli
    class Command
      include TR::CondUtils

      class CommandError < StandardError; end

      attr_accessor :command_buffer
      def initialize(cmd, required_interaction = false)
        
        #cmdOut = ENV["DOCKERUN_COMMAND_OUT"]
        #if not_empty?(cmdOut)
        #  @runner = TTY::Command.new(printer: cmdOut.to_sym)
        #else
        #  @runner = TTY::Command.new(printer: :null)
        #end

        #@runner = TTY::Command.new
        @command_buffer = cmd
        @required_interaction = required_interaction
        @required_interaction = false if not_bool?(@required_interaction)
      end

      def interactive_session?
        @required_interaction
      end

      def run(log_console = false, &block)

        if interactive_session?
          
          pmt = TTY::Prompt.new
          terminal = pmt.select " Command is an interactive command. New terminal session is required. Please select one of the session below to proceed:" do |m|
            detect_terminal.each do |t|
              m.choice t, t
            end

            m.choice "Quit", :quit
          end

          if terminal != :quit
            case terminal
            when "terminator"
              `#{terminal} -e "#{@command_buffer.join(" ")}; bash"`
            when "gnome-terminal"
              `#{terminal} -- bash -c "#{@command_buffer.join(" ")}; exec bash"`
            when "konsole"
              `#{terminal} --hold -e "#{@command_buffer.join(" ")}" &`
            when "iTerm2"
              `osascript -e \
               'tell application "iTerm"
               activate

               create window with default profile
               delay 0.5

               set currentWindow to current window

               tell current session of currentWindow
               write text "#{@command_buffer.join(" ")}"
               end tell

               end tell'
              `
            when "Terminal" 
              `osascript -e \
               'tell application "Terminal"
               activate
               do script "#{@command_buffer.join(" ")}"
               end tell'
              `
            else
              raise Error, "Unfinished supporting terminal : #{terminal}"
            end

            pmt.puts "\n Prompt running inside the Docker shall be opened in a new window\n\n"
          end

        else
          @outStream = []
          @errStream = []

          if(log_console)
            runner = TTY::Command.new(printer: :pretty)
          else
            runner = TTY::Command.new(printer: :null)
          end

          result = runner.run!(@command_buffer.join(" "))  do |out, err|
            if block
              block.call(:outstream, out)
              block.call(:errstream, err)
            else
              @outStream << out if not_empty?(out)
              @errStream << err if not_empty?(err)
            end
          end

          CommandResult.new(result, @outStream, @errStream)
          #{ outStream: @outStream, errStream: @errStream, result: @result }
        end
      end

      def to_string
        @command_buffer
      end
      def to_s
        to_string.join(" ")
      end

      private
      def detect_terminal
        avail = []
        if TR::RTUtils.on_linux?
          #possible = [ "gnome-terminal","konsole","tilix", "terminator" ]
          possible = [ "gnome-terminal", "terminator" ]
          possible.each do |app|
            avail << app if not TTY::Which.which(app).nil?
          end
        elsif TR::RTUtils.on_windows?
          avail << "cmd.exe"
        elsif TR::RTUtils.on_mac?
          avail << "Terminal"
          avail << "iTerm2"
        end
        avail
      end

    end
  end
end