# Toplevel Pubnub module.
module Pubnub
  # Validator module that holds all validators modules
  module Validator
    # Validator for Publish event
    module Publish
      include CommonValidator

      def validate!
        return if @skip_validate
        validate_publish_key!
        validate_channel!
        validate_message!
        validate_store!
        validate_meta!
      end

      private

      def validate_publish_key!
        return unless @publish_key.nil?
        raise(
          ArgumentError.new,
          ':publish_key is required for publish event.'
        )
      end

      def validate_store!
        return if @store.nil? || [true, false].include?(@store)
        raise(
          ArgumentError.new,
          ':store parameter invalid (should be true or false).'
        )
      end

      def validate_channel!
        return unless @channel.nil? || @channel.empty?
        raise(
          ArgumentError.new,
          ':channel is required for publish event.'
        )
      end

      def validate_message!
        return unless @message.nil?
        raise(
          ArgumentError.new,
          ':message is required for publish event.'
        )
      end

      def validate_meta!
        return unless !@meta.nil? && @meta.class != Hash
        raise(
          ArgumentError.new,
          ':meta parameter must me hash.'
        )
      end
    end
  end
end