require 'yaml'

module AppRb
  class Cli
    def initialize(args)
      @args = args
      Thread.abort_on_exception = true
    end

    def run
      if @args.count < 2
        usage
        exit
      end
      config = Config.new(YAML.load(File.read(@args[0])))
      command = @args[1]

      if AppRb::Util.compare_versions(config.tool_version, AppRb::VERSION) > 0
        puts "FATAL: need at least '#{config.tool_version}' tool version but current version is '#{AppRb::VERSION}'"
        exit -1
      end

      if command == "deploy" || command == "d"
        Command.new(config).deploy(@args[2])
      elsif command == "status" || command == "s"
        Command.new(config).status
      elsif command == "restart"
        Command.new(config).restart
      elsif command == "clean"
        Command.new(config).clean
      elsif command == "stop"
        Command.new(config).stop
      else
        puts "FATAL: unknown command '#{command}'"
        exit -1
      end
    end

  private

    def usage
      puts "Just deploy your apps with docker and consul. Nothing else."
      puts "Version: #{AppRb::VERSION}"
      puts ""
      puts "  app-rb <yml> <command>"
      puts ""
      puts "  deploy [hash]      - deploy new version of app"
      puts "  status             - status of app"
      puts "  stop               - stop app"
    end
  end
end