require 'paint'

# list commands and display help
#
module App42
  module Base
    class Help
      
      # details, how to use app42 commands
      def self.how_to
        Paint["Usage: app42 COMMAND [command-specific-options]", :blue]
      end

      # list available commands or display help for a specific command
      def self.commands

       print  <<-USAGE

  #{how_to}

  Key
   keys                    #  List API key and Secret key
   addKeys                 #  Add API key and Secret key
   clearKeys               #  Clear API key and Secret key

  Applications 
   setupInfra              #  Setup your deployment and runtime environment i.e. Instance(Memory, CPU) and Technology Stack
   deploy                  #  Deploy the application over your runtime environment
   update                  #  Update the application over your runtime environment
   scale                   #  Scale application by number of instance(s)
   descale                 #  Descale application by number of instance(s)
   start                   #  Start the application
   stop                    #  Stop the application
   restart                 #  Restart the application
   deleteInfra             #  Delete the Infrastructure environment
   apps                    #  List all the deployed applications with their meta details
   appInfo                 #  Show meta information of the application
   appState                #  Show current state of the application
   logs                    #  Returns the log file URL(s) for the application

  Services 
   createService           #  Creates a new service e.g. MySQL, MongoDB, CouchDB, PostgreSQL etc.
   deleteService           #  Delete provisioned service
   startService            #  Start the service
   restartService          #  Restart the service
   stopService             #  Stop the service
   services                #  List all the provisioned services with their meta details
   serviceInfo             #  Show meta information of the provisioned service
   resetServicePassword    #  Reset password of provisioned service
   bindIP                  #  Bind IP to provisioned service
   unbindIP                #  Unbind IP from provisioned service
   bindInfo                #  Show IP bind information related to provisioned service

  Misc   
   supportedServices       #  List supported services by App42
   iaasProviders           #  List supported IaaS providers by App42
   runtimes                #  List supported runtimes by App42
   activities              #  List all activities with their status

  Setup
    setupCloudAPI          #  Setup App42 cloud API by choosing required configuration
    deleteCloudAPI         #  Delete App42 cloud API setup
    setupInfo              #  Show setup information
    setups                 #  List all the setups

  Help
   version                 #  Show Ruby client gem version
   help                    #  List available commands and their description
   COMMAND --help          #  Display detailed help of a specific command
        USAGE
      end

      def self.keys_help
        print <<-USAGE
  #{how_to}
  app42 api_key:add [KEY]       #  add a api key for the current user
  app42 secret_key:add [KEY]    #  add a Secret Key for the current user
  app42 keys:clear              #  remove all authentication keys from the current user

        USAGE

      end

      # call help methods
      def Help.usage command
        if self.respond_to?(command)
          send command 
        elsif self.respond_to?(command.split(':').last)
          send command.split(':').last
        elsif self.respond_to?(command.split('-').join('_'))
          send command.split('-').join('_')  
        else
          Paint["Sorry..!!, Help is not available.\n", :red]   
        end

      end

      class << self

        def keys
          print <<-DESC
Usage:
  app42 keys

  List API key and Secret key

Example:
  === API/Secret Key ===
  API Key      = <apiKey>
  Secret Key   = <secretKey>
          DESC
        end

        def addkeys
          print <<-DESC
Usage:
  app42 addKeys

  Add API key and Secret key

Options:
  [--apiKey=API_KEY]            # API Key to add.
  [--secretKey=SECRET_KEY]      # Secret Key to add.

Example:
  $app42 addKeys
  == Enter your App42PaaS keys ==
  Enter API Key:: <apiKey>
  Enter Secret Key:: <secretKey>
  Adding keys...done
          DESC
        end

        def clearkeys
          print <<-DESC
Usage:
  app42 clearKeys

  Clear API key and Secret key

Example:
  app42 clearKeys
  Do you want to delete existing keys? [Yn]: y

  === API key and Secret key have been deleted. ===
          DESC
        end
       
        def setupinfra
          print <<-DESC
Usage:
  app42 setupInfra

  Setup your deployment and runtime environment i.e. Instance(Memory, CPU) and Technology Stack

Example:
  $app42 setupInfra
  Application Name: demo

  Checking App Name Availability... OK

  1: Shared
  Select Instance Type [Shared]: 

  1: Amazon us-west-2
  Select IaaS Provider [Amazon us-west-2]: 

  1: Ruby 2.0.0
  2: Java 6
  3: Java 7
  4: PHP 5.3
  5: PHP 5.5
  Select Runtime [Ruby 2.0.0]: 

  1: Ruby on Rack 
  2: Rails 4.0
  3: Sinatra 1.4
  Select Framework [Ruby on Rack ]: 

  1: Nginx 1.4.1
  Select Web Server [Nginx 1.4.1]: 

  Specify Kontena Power: 5
 
  Setting up the infrastructure... OK
  
  Operation is in progress, Please wait.../
  
  Setup Infra completed successfully.

  Default application has been deployed. You can visit 'demo.aws.app42paas.com' to see the default application.
          DESC

        end

        def apps
          print <<-DESC
Usage:
  app42 apps

  List all the deployed applications with their meta details

Example:
  $app42 apps
          
+------------------------+------------+-----------------+---------------+---------+------+
|                                    === My Apps ===                                     |
+------------------------+------------+-----------------+---------------+---------+------+
| App Url                | App Status | Container Count | Iaas Provider | Vm Type | Name |
+------------------------+------------+-----------------+---------------+---------+------+
| demo.aws.app42paas.com | RUNNING    | 1               | Amazon        | Shared  | demo |
+------------------------+------------+-----------------+---------------+---------+------+
        DESC

        end

        def deploy
          print <<-DESC
Usage:
  app42 deploy

  Deploy the application over your runtime environment

Options:
  [--app APP]      # Name of app, you want to update

Example:
  $app42 deploy
  Enter App Name: demo
  1: Binary
  2: Source
  Choose Upload Type [Binary]: 2

  Enter Git URL?: https://github.com/shepHertz/demo.git
  Deploying Application... OK

  Operation is in progress, Please wait...|
  App deployed successfully.
          DESC

        end

        def update
          print <<-DESC
Usage:
  app42 update

  Update the application over your runtime environment

Options:
  [--app APP]      # Name of app, you want to update

Example:
  $app42 update
  Enter App Name: demo
  1: Binary
  2: Source
  Choose Upload Type [Binary]: 2

  Updating Application... OK

  Operation is in progress, Please wait...-
  App deployed successfully.
          DESC

        end

        def start
          print <<-DESC
Usage:
  app42 start

  Start the application

Options:
  [--app APP]      # Name of app, you want to start

Example:
  $app42 start --app demo
  Starting Application demo... OK

  Operation is in progress, Please wait...
  1 out of 3 started
  -
  2 out of 3 started
  |
  App started successfully.
          DESC

        end

        def stop
          print <<-DESC
Usage:
  app42 stop

  Stop the application

Options:
  [--app APP]      # Name of app, you want to stop

Example:
  $app42 stop --app demo
  Stopping Application demo... OK

  Operation is in progress, Please wait...-
  1 out of 3 stopped
  -
  2 out of 3 stopped
  -
  App stopped successfully.
          DESC
        end

        def restart
          print <<-DESC
Usage:
  app42 restart

  Restart the application

Options:
  [--app APP]      # Name of app, you want to restart

Example:
  $app42 start --app demo
  Restarting Application demo... OK

  Operation is in progress, Please wait...
  1 out of 3 restarted
  -
  2 out of 3 restarted
  |
  App restarted successfully.
          DESC
        end

        def deleteinfra
          print <<-DESC
Usage:
  app42 deleteInfra

  Delete the Infrastructure environment

Options:
  [--app APP]      # Name of app, you want to delete

Example:
  $app42 deleteInfra --app demo
  Deleting Application demo... OK

  Operation is in progress, Please wait...
  1 out of 3 deleted
  -
  2 out of 3 deleted
  |
  App deleted successfully.
          DESC
        end

        def descale
          print <<-DESC
Usage:
  app42 descale

  Descale application by number of instance(s)

Options:
  [--app APP]      # Name of app, you want to descale

Example:
  $app42 descale
  Enter App Name: demo
  Descale by instance(s) [1]: 2
  Descaling Application demo by instance 2... OK

  Operation is in progress, Please wait...|
  1 out of 2 descaled
  -
  Descale completed successfully.
          DESC
        end

        def scale
          print <<-DESC
Usage:
  app42 scale

  Scale application by number of instance(s)

Options:
  [--app APP]      # Name of app, you want to scale

Example:
  $app42 scale
  Enter App Name: demo
  Scale by instance(s) [1]: 2
  Scaling Application demo by instance 2... OK

  Operation is in progress, Please wait...-
  1 out of 2 scaled
  |
  Scale completed successfully.
          DESC
        end

        def appinfo
          print <<-DESC
Usage:
  app42 appInfo

  Show the meta information of the application

Options:
  [--app APP]      # Name of app, you want to info

Example:
  $app42 appInfo --app demo
  Application Name: demo
  +------------------------+------------+---------------+------+----------+----------------+--------+
  |                                        === demo Info ===                                        |
  +------------------------+------------+---------------+------+----------+----------------+--------+
  | App Url                | App Status | Iaas Provider | Name | Runtime  | Instance Count | Memory |
  +------------------------+------------+---------------+------+----------+----------------+--------+
  | demo.aws.app42paas.com | RUNNING    | Amazon        | demo | Ruby 2.0 | 1              | 512 MB |
  +------------------------+------------+---------------+------+----------+----------------+--------+
          DESC
        end

        def appstate
          print <<-DESC
Usage:
  app42 appState

  Show current state of the application

Options:
  [--app APP]      # Name of app

Example:
  $app42 appState --app demo
  +--------------------+
  | === demo State === |
  +--------------------+
  | RUNNING            |
  +--------------------+
          DESC
        end

        def logs
          print <<-DESC
Usage:
  app42 logs

  Returns the log URL(s) for the application

Example:
  $app42 logs
  Enter App Name: demo
  Please visit below URL(s) to access app logs

  +----------------------------------------------------------------------------+
  |                                Log URL(s)                                  |
  +----------------------------------------------------------------------------+
  | demo.aws.app42paas.com/getInstanceLog?id=fi1nyi7bh68nvz0riyqrfup8lkm57qiu  |
  | demo.aws.app42paas.com/getInstanceLog?id=v1bta5rg2tsycat31r3pzc28sa7d1bjy |
  +----------------------------------------------------------------------------+
          DESC
        end


        def createservice
          print <<-DESC
Usage:
  app42 createService

  Creates a new service e.g. MySQL, MongoDB, CouchDB, PostgreSQL etc.

Example:
  $app42 createService
  Enter Service Name: mysqldemo
  Checking Service Name Availability... OK

  1: MySQL 5.5.31
  2: Mongodb 2.4.4
  3: Couchdb 1.0.1
  4: PostgreSQL 9.1.9
  Select Service [MySQL 5.5.31]: 

  Enter Database Name: demo_db

  1: Shared
  Select Instance Type [Shared]: 

  1: Amazon us-west-2
  Select IaaS Provider [Amazon us-west-2]: 

  Specify Kontena Power: 5

  Creating Service... OK
  
  Operation is in progress, Please wait...|
  Service created successfully.

  +---------------+---------------+-----------+---------+------------------+---------+--------------+----------------------------------+--------+--------------+
  |                                                                 === mysqldemo Details ===                                                                  |
  +---------------+---------------+-----------+---------+------------------+---------+--------------+----------------------------------+--------+--------------+
  | Database Name | Iaas Provider | Vm Ip     | State   | User Name        | Vm Port | Service Type | Password                         | Memory | Service Name |
  +---------------+---------------+-----------+---------+------------------+---------+--------------+----------------------------------+--------+--------------+
  | demodb        | Amazon        | 10.0.0.52 | RUNNING | j7zz1jsx1bb4eiz1 | 49695   | MySQL 5.5.1  | teh77o4b6kpb22ab6oogfu9lwru9vrlj | 512 MB | mysqldemo    |
  +---------------+---------------+-----------+---------+------------------+---------+--------------+----------------------------------+--------+--------------+
          DESC
        end

        def deleteservice
          print <<-DESC
Usage:
  app42 deleteService

  Delete the provisioned service

Options:
  [--service SERVICE]      # Name of service  

Example:
  $app42 deleteService
  Enter Service Name: mysqldemo

  Deleting Service... OK
  
  Operation is in progress, Please wait...|
  Service deleted successfully.  
          DESC
        end

        def startservice
          print <<-DESC
Usage:
  app42 startService

  Start the service

Options:
  [--app Service]      # Name of service, you want to start

Example:
  $app42 startService
  Enter Service Name: mysql
  Starting Service mysql... OK

  Operation is in progress, Please wait...|
  Service started successfully.
          DESC

        end

        def stopservice
          print <<-DESC
Usage:
  app42 stopService

  Stop the service

Options:
  [--app Service]      # Name of service, you want to start

Example:
  $app42 stopService
  Enter Service Name: mysql
  Stopping Service mysql... OK

  Operation is in progress, Please wait...|
  Service stopped successfully.
          DESC

        end

        def restartservice
          print <<-DESC
Usage:
  app42 restartService

  Restart the service

Options:
  [--app Service]      # Name of service, you want to start

Example:
  $app42 restartService
  Enter Service Name: mysql
  Restarting Service mysql... OK

  Operation is in progress, Please wait...|
  Service restarted successfully.
          DESC

        end

        def services
          print <<-DESC
Usage:
  app42 services

  List the all provisioned services with their meta details

Example:
  $app42 services
  +---------------+---------------+-----------+-----------+---------+------------------+---------+--------------+----------------------------------+--------+
  |                                                                  === Service List ===                                                                   |
  +---------------+---------------+-----------+-----------+---------+------------------+---------+--------------+----------------------------------+--------+
  | Database Name | Iaas Provider | Name      | Vm Ip     | State   | User Name        | Vm Port | Service Type | Password                         | Memory |
  +---------------+---------------+-----------+-----------+---------+------------------+---------+--------------+----------------------------------+--------+
  | demodb        | Amazon        | mysqldemo | 10.0.0.52 | RUNNING | j7zz1jsx1bb4eiz1 | 49695   | MySQL 5.5.1  | teh77o4b6kpb22ab6oogfu9lwru9vrlj | 512 MB |
  +---------------+---------------+-----------+-----------+---------+------------------+---------+--------------+----------------------------------+--------+
          DESC
        end

        def serviceinfo
          print <<-DESC
Usage:
  app42 serviceInfo

  Show meta information of the provisioned service

Options:
  [--service SERVICE]      # Name of service

Example:
  $app42 serviceInfo
  1: mysqldemo
  Select Service: 1

  +---------------+---------------+-----------+---------+------------------+---------+--------------+----------------------------------+--------+--------------+
  |                                                                 === mysqldemo Details ===                                                                  |
  +---------------+---------------+-----------+---------+------------------+---------+--------------+----------------------------------+--------+--------------+
  | Database Name | Iaas Provider | Vm Ip     | State   | User Name        | Vm Port | Service Type | Password                         | Memory | Service Name |
  +---------------+---------------+-----------+---------+------------------+---------+--------------+----------------------------------+--------+--------------+
  | demodb        | Amazon        | 10.0.0.52 | RUNNING | 5hk1tmdmkr16b94f | 52108   | MySQL 5.5.1  | 2otwxwpu8mskmmvwt7bx4r2fzw4ytls0 | 512 MB | mysqldemo    |
  +---------------+---------------+-----------+---------+------------------+---------+--------------+----------------------------------+--------+--------------+
          DESC
        end

        def supportedservices
          print <<-DESC
Usage:
  app42 supportedServices

  List the supported services by App42

Example:
  $app42 supportedServices
  +--------------+--------------+
  | === App42 PaaS Services === |
  +--------------+--------------+
  | Name         | Version      |
  +--------------+--------------+
  | MySQL        | 5.5.1        |
  | Mongodb      | 2.4          |
  | Couchdb      | 10.1         |
  | PostgreSQL   | 9.1          |
  +--------------+--------------+
          DESC
        end

        def activities
          print <<-DESC
Usage:
  app42 activities

  List all activities with their status 

Example:
  $app42 activities
  +---------------+-----------+---------+---------+-----------------------+
  |                        === User Activities ===                        |
  +---------------+-----------+---------+---------+-----------------------+
  | Operation     | Status    | Name    | Type    | Date                  |
  +---------------+-----------+---------+---------+-----------------------+
  | setupInfra    | COMPLETED | demo    | APP     | 2013-08-27 06:24:03.0 |
  | scale         | COMPLETED | demo    | APP     | 2013-08-27 06:32:15.0 |
  | createService | COMPLETED | couchdb | SERVICE | 2013-08-27 06:33:56.0 |
  | setupInfra    | COMPLETED | demo1   | APP     | 2013-08-27 07:00:47.0 |
  +---------------+-----------+---------+---------+-----------------------+
          DESC
        end

        def runtimes
          print <<-DESC
Usage:
  app42 runtimes

  List the supported runtimes

Example:
  $app42 runtimes
  +--------------+--------------+
  | === Available Runtimes ===  |
  +--------------+--------------+
  | Name         | Version      |
  +--------------+--------------+
  | Ruby         | 2.0          |
  | Java         | 6.0          |
  | Java         | 7.0          |
  | Php          | 5.3          |
  | Php          | 5.5          |
  +--------------+--------------+
          DESC
        end
 
        def iaasproviders
          print <<-DESC
Usage:
  app42 iaasProviders

  List the supported IaaS providers by App42

Example:
  $app42 iaasProviders
  +-----------------+-----------------+
  | === Available IaaS Providers ===  |
  +-----------------+-----------------+
  | Name            | Zone            |
  +-----------------+-----------------+
  | Amazon          | US West-2a      |
  +-----------------+-----------------+

          DESC
        end


        def app42_update
        print <<-DESC
Usage:
  app42 app42-update

  Update App42PaaS client(app42)
  -> Download app42 client, In a terminal, go to the folder where you have downloaded the client and run client update command.

Example:
  $app42 app42-update
  Uninstalling current app42 client
  Remove executables:
    app42

  in addition to the gem? [Yn]  y
  Removing app42
  Successfully uninstalled app42-0.5.0
  Installing latest app42 client
  Successfully installed app42-0.5.0
  1 gem installed
  Installing ri documentation for app42-0.5.0...
  Installing RDoc documentation for app42-0.5.0...
          DESC
      end

      def resetservicepassword
        print <<-DESC
Usage:
  resetServicePassword

  Reset the password of provisioned service

Example:
  $resetServicePassword
  Enter Service Name: mysqldemo

  Enter Old Password: teh77o4b6kpb22ab6oogfu9lwru9vrlj

  Resetting Password... OK
  
  Operation is in progress, Please wait.../
  Service Password has been reset successfully.

  Your new password is: z2qo1vxeadak6jsmt9upobytwptc5eo0
          DESC
      end

      def bindip
        print <<-DESC
Usage:
  app42 bindIP

  Bind IP to provisioned service

Example:
  $app42 bindIP
  Enter Service Name: mysqldemo

  Please Provide Source IP
  (For public access, use '0.0.0.0'): <IP address>

  Binding IP to service... OK
  
  Operation is in progress, Please wait...-
  Service bind with IP successfully.

  +---------------+---------------+----------------+-----------------+---------+------------------+---------+--------------+----------------------------------+--------+--------------+
  |                                                                             === mysqldemo Details ===                                                                             |
  +---------------+---------------+----------------+-----------------+---------+------------------+---------+--------------+----------------------------------+--------+--------------+
  | Database Name | Iaas Provider | Vm Ip          | Source Ip       | State   | User Name        | Vm Port | Service Type | Password                         | Memory | Service Name |
  +---------------+---------------+----------------+-----------------+---------+------------------+---------+--------------+----------------------------------+--------+--------------+
  | demodb        | Amazon        | 54.218.127.245 | 122.162.124.222 | RUNNING | j7zz1jsx1bb4eiz1 | 49695   | MySQL 5.5.1  | z2qo1vxeadak6jsmt9upobytwptc5eo0 | 512 MB | mysqldemo    |
  +---------------+---------------+----------------+-----------------+---------+------------------+---------+--------------+----------------------------------+--------+--------------+
          DESC
      end

      def unbindip
        print <<-DESC
Usage:
  app42 unbindIP

  Unbind IP from provisioned service

Example:
  $app42 unbindIP
  Enter Service Name: mysqldemo

  Please Provide Source IP: <IP address>               

  Unbinding IP to service... OK
  
  Operation is in progress, Please wait...|
  Service unbind with IP successfully.
          DESC
      end

      def bindinfo
        print <<-DESC
Usage:
  app42 bindInfo

  Show IP bind information related to provisioned service

Example:
  $app42 bindInfo
  1: mysqldemo
  Select Service [mysqldemo]: 

  +---------------+---------------+----------------+-----------------+---------+------------------+---------+--------------+----------------------------------+--------+--------------+
  |                                                                             === mysqldemo Details ===                                                                             |
  +---------------+---------------+----------------+-----------------+---------+------------------+---------+--------------+----------------------------------+--------+--------------+
  | Database Name | Iaas Provider | Vm Ip          | Source Ip       | State   | User Name        | Vm Port | Service Type | Password                         | Memory | Service Name |
  +---------------+---------------+----------------+-----------------+---------+------------------+---------+--------------+----------------------------------+--------+--------------+
  | demodb        | Amazon        | 54.218.127.245 | 122.162.124.222 | RUNNING | j7zz1jsx1bb4eiz1 | 49695   | MySQL 5.5.1  | z2qo1vxeadak6jsmt9upobytwptc5eo0 | 512 MB | mysqldemo    |
  +---------------+---------------+----------------+-----------------+---------+------------------+---------+--------------+----------------------------------+--------+--------------+
          DESC
      end

      def setupcloudapi
        print <<-DESC
Usage:
  app42 setupCloudAPI

  Setup App42 cloud API by choosing required configuration

Example:
  $app42 setupCloudAPI
  Enter Setup Name: railsdemo
  Checking Setup Name Availability... OK

  1: Shared
  Select Instance Type [Shared]: 

  1: Amazon us-west-2
  Select IaaS Provider [Amazon us-west-2]: 

  1: App42CloudAPI
  Select Setup Type [App42CloudAPI]: 

  1: Light
  2: Medium
  3: Heavy
  Select Flavour [Light]: 1

  Setting up the infrastructure... OK

  Operation is in progress, Please wait...|

  Your setup has been completed successfully, For details, Login to your AppHQ console.

          DESC
      end

      def deletecloudapi
        print <<-DESC
Usage:
  app42 deleteCloudAPI

  Delete App42 cloud API setup

Example:
  $app42 deleteCloudAPI
  Enter Setup Name: demo
  Deleting Cloud API... OK

  Operation is in progress, Please wait...-
  Setup deleted successfully.
          DESC
      end

      def setupinfo
        print <<-DESC
Usage:
  app42 setupInfo

  Show setup information

Example:
  $app42 setupInfo
  Enter Setup Name: demo
  +-----------------------+--------------------------------+------------+------------------+------------+---------+---------------+--------------+-----------------------------+
  |                                                                            === demo Details ===                                                                            |
  +-----------------------+--------------------------------+------------+------------------+------------+---------+---------------+--------------+-----------------------------+
  | Created On            | Api Server Url                 | Setup Name | Iaas Provider    | Setup Type | Vm Type | Setup Flavour | Setup Status | App Hq Url                  |
  +-----------------------+--------------------------------+------------+------------------+------------+---------+---------------+--------------+-----------------------------+
  | 2013-10-16 13:05:12.0 | democloudapi.aws.app42paas.com | demo       | Amazon us-west-2 | CLOUDAPI   | Shared  | light         | RUNNING      | demoapphq.aws.app42paas.com |
  +-----------------------+--------------------------------+------------+------------------+------------+---------+---------------+--------------+-----------------------------+
          DESC
      end

      def setups
        print <<-DESC
Usage:
  app42 setups

  List all the setups

Example:
  $app42 setups
  +-----------------------+--------------------------------+------------+------------------+------------+---------+---------------+--------------+-----------------------------+
  |                                                                            === Setups List ===                                                                             |
  +-----------------------+--------------------------------+------------+------------------+------------+---------+---------------+--------------+-----------------------------+
  | Created On            | Api Server Url                 | Setup Name | Iaas Provider    | Setup Type | Vm Type | Setup Flavour | Setup Status | App Hq Url                  |
  +-----------------------+--------------------------------+------------+------------------+------------+---------+---------------+--------------+-----------------------------+
  | 2013-10-16 13:05:12.0 | democloudapi.aws.app42paas.com | demo       | Amazon us-west-2 | CLOUDAPI   | Shared  | light         | RUNNING      | demoapphq.aws.app42paas.com |
  +-----------------------+--------------------------------+------------+------------------+------------+---------+---------------+--------------+-----------------------------+
          DESC
      end

      def version
        print <<-DESC
Usage:
  app42 version

  Show Ruby client gem version 

Example:
  $app42 version
  App42 current version: 0.5.3
          DESC

      end

      end

    end
  end
end