dblock/slack-ruby-client

#!/usr/bin/env ruby
require 'gli'
require 'slack_ruby_client'

module Slack
  module Cli
    class App
      extend GLI::App

      program_desc 'Slack client.'

      default_command :help

      switch %i[d debug], desc: 'Enable debug-level logging.', default_value: false
      flag [:t, 'slack-api-token'], desc: 'Slack API token.', default_value: ENV['SLACK_API_TOKEN']
      flag ['vcr-cassette-name'], desc: 'Offline VCR cassette.'

      commands_from File.expand_path('commands', __dir__)

      pre do |global_options, _command, options, _args|
        # global Slack configuration
        Slack.config.token = global_options['slack-api-token']
        help_now! 'Set Slack API token via --slack-api-token or SLACK_API_TOKEN.' unless Slack.config.token && !Slack.config.token.empty?

        if global_options['debug']
          require 'logger'
          logger = Logger.new(STDOUT)
          logger.level = Logger::DEBUG
          Slack::Web::Client.config.logger = logger
        end

        @client = Slack::Web::Client.new

        # Offline VCR cassette
        if global_options['vcr-cassette-name']
          require 'webmock'
          WebMock.enable!
          require 'vcr'
          VCR.configure do |config|
            config.cassette_library_dir = 'spec/fixtures/slack'
            config.hook_into :webmock
            config.default_cassette_options = { record: :new_episodes }
          end
          VCR.insert_cassette global_options['vcr-cassette-name']
        end

        # remove any nil values from options
        options.compact!

        true
      end
    end
  end
end

exit Slack::Cli::App.run(ARGV)