# frozen_string_literal: true

module BootstrapForm
  module Inputs
    module CheckBox
      extend ActiveSupport::Concern
      include Base

      included do
        def check_box_with_bootstrap(name, options={}, checked_value="1", unchecked_value="0", &block)
          options = options.symbolize_keys!
          check_box_options = options.except(:class, :label, :label_class, :error_message, :help,
                                             :inline, :custom, :hide_label, :skip_label, :wrapper_class)
          check_box_options[:class] = check_box_classes(name, options)

          content_tag(:div, class: check_box_wrapper_class(options)) do
            html = check_box_without_bootstrap(name, check_box_options, checked_value, unchecked_value)
            html.concat(check_box_label(name, options, checked_value, &block)) unless options[:skip_label]
            html.concat(generate_error(name)) if options[:error_message]
            html
          end
        end

        bootstrap_alias :check_box
      end

      private

      def check_box_label(name, options, checked_value, &block)
        label_name = if options[:multiple]
                       check_box_value(name, checked_value)
                     else
                       name
                     end
        label_options = { class: check_box_label_class(options) }
        label_options[:for] = options[:id] if options[:id].present?
        label(label_name, check_box_description(name, options, &block), label_options)
      end

      def check_box_description(name, options, &block)
        content = block_given? ? capture(&block) : options[:label]
        content || (object && object.class.human_attribute_name(name)) || name.to_s.humanize
      end

      def check_box_value(name, value)
        # label's `for` attribute needs to match checkbox tag's id,
        # IE sanitized value, IE
        # https://github.com/rails/rails/blob/5-0-stable/actionview/lib/action_view/helpers/tags/base.rb#L123-L125
        "#{name}_#{value.to_s.gsub(/\s/, '_').gsub(/[^-[[:word:]]]/, '').mb_chars.downcase}"
      end

      def check_box_classes(name, options)
        classes = [options[:class]]
        classes << (options[:custom] ? "custom-control-input" : "form-check-input")
        classes << "is-invalid" if error?(name)
        classes << "position-static" if options[:skip_label] || options[:hide_label]
        classes.flatten.compact
      end

      def check_box_label_class(options)
        classes = []
        classes << (options[:custom] ? "custom-control-label" : "form-check-label")
        classes << options[:label_class]
        classes << hide_class if options[:hide_label]
        classes.flatten.compact
      end

      def check_box_wrapper_class(options)
        classes = []
        if options[:custom]
          classes << custom_check_box_wrapper_class(options)
        else
          classes << "form-check"
          classes << "form-check-inline" if layout_inline?(options[:inline])
        end
        classes << options[:wrapper_class] if options[:wrapper_class].present?
        classes.flatten.compact
      end

      def custom_check_box_wrapper_class(options)
        classes = []
        classes << "custom-control"
        classes << (options[:custom] == :switch ? "custom-switch" : "custom-checkbox")
        classes << "custom-control-inline" if layout_inline?(options[:inline])
        classes
      end
    end
  end
end