svenfuchs/cl

require 'cl'

# e.g. lib/owners/add.rb
module Owners
  class Add < Cl::Cmd
    register :add

    summary 'Add one or more owners to an existing owner group'

    description <<~str
      Use this command to add one or more owners to an existing
      owner group.

      [...]
    str

    args :owner

    opt '-t', '--to TO', 'An existing owner group'

    def run
      # implement adding the owner as given in `owner` (as well as `args`)
      # to the group given in `to` (as well as `opts[:to]`).
      p owner: owner, to: to, to?: to?, args: args, opts: opts
    end
  end
end

# Running this, e.g. using `bin/owners add one,two --to group` will instantiate the
# class `Owners::Add`, and call the method `run` on it.

# e.g. bin/owners
#
# args normally would be ARGV
args = %w(add one --to group)

Cl.new('owners').run(args)

# Output:
#
#   {:owner=>"one", :to=>"group", :to?=>true, :args=>["one"], :opts=>{:to=>"group"}}

Cl.new('owners').run(%w(add --help))

# Output:
#
#   Usage: owners add [owner] [options]
#
#   Summary:
#
#     Add one or more owners to an existing owner group
#
#   Description:
#
#     Use this command to add one or more owners to an existing
#     owner group.
#
#     [...]
#
#   Arguments:
#
#     owner           type: string
#
#   Options:
#
#     -t --to TO      An existing owner group (type: string)
#        --help       Get help on this command