module PDK
  module CLI
    @get_config_cmd = @get_cmd.define_command do
      name 'config'
      usage 'config [name]'
      summary 'Retrieve the configuration for <name>. If not specified, retrieve all configuration settings'

      run do |_opts, args, _cmd|
        item_name = args[0]
        resolved_config = PDK.config.resolve(item_name)
        # If the user wanted to know a setting but it doesn't exist, raise an error
        if resolved_config.empty? && !item_name.nil?
          PDK.logger.error(format("Configuration item '%{name}' does not exist", name: item_name))
          exit 1
        end
        # If the user requested a setting and it's the only one resolved, then just output the value
        if resolved_config.count == 1 && resolved_config.keys[0] == item_name
          puts format('%{value}', value: resolved_config.values[0])
          exit 0
        end
        # Otherwise just output everything
        resolved_config.keys.sort.each { |key| puts format('%{name}=%{value}', name: key, value: resolved_config[key]) }
      end
    end
  end
end