# frozen_string_literal: true

module Lipstick
  module Helpers
    module FormHelper
      include ActionView::Helpers::FormTagHelper

      def field_block(html_opts = {})
        add_css_class(html_opts, 'form-group')
        content_tag('div', html_opts) { yield }
      end

      def radio_button_tag(name, value, checked = false, options = {})
        content_tag('div', class: 'radio') do
          content_tag('label') do
            concat(super)
            concat(capture { yield })
          end
        end
      end

      def check_box_tag(*)
        content_tag('div', class: 'checkbox') do
          content_tag('label') do
            concat(super)
            concat(capture { yield })
          end
        end
      end

      alias orig_form_tag form_tag

      def inline_form_tag(url_for_options = {}, options = {})
        add_css_class(options, 'form-inline')
        form_tag(url_for_options, options) { yield }
      end

      def search_form_tag(filter, url: nil)
        form_tag(url, method: :get) do
          field_block { search_form_input_tag(filter) }
        end
      end

      def search_form_input_tag(filter)
        content_tag('div', class: 'row') do
          content_tag('div', grouped_search_field(filter), class: 'col-lg-12')
        end
      end

      def search_filter_text_field(filter)
        orig_text_field_tag(:filter, filter,
                            placeholder: 'Search within these entries',
                            autocomplete: 'off',
                            class: 'form-control')
      end

      def search_button
        button_tag(type: 'submit') do
          concat(icon_tag('search'))
          concat(' Search')
        end
      end

      def grouped_search_field(filter)
        content_tag('div', class: 'input-group') do
          concat(search_filter_text_field(filter))
          concat(content_tag('span', search_button, class: 'input-group-btn'))
        end
      end

      def hidden_fields(&block)
        content_tag('div', style: 'display: none;', &block)
      end

      alias orig_text_field_tag text_field_tag

      def text_field_tag(name, value = nil, opts = {})
        add_css_class(opts, 'form-control')
        super
      end

      def text_area_tag(name, content = nil, opts = {})
        add_css_class(opts, 'form-control')
        super
      end

      def date_field_tag(name, value = nil, **opts)
        opts[:class] = "#{opts[:class]} date-picker".strip
        text_field_tag(name, value, opts)
      end

      def select_tag(name, option_tags = nil, **opts)
        add_css_class(opts, 'form-control')
        super
      end

      def button_tag(content_or_options = nil, options = nil, &block)
        if content_or_options.is_a?(Hash)
          content_or_options[:class] ||= 'btn-default'
          add_css_class(content_or_options, 'btn')
          super
        else
          options ||= {}
          options[:class] ||= 'btn-default'
          add_css_class(options, 'btn')
          super(content_or_options, options, &block)
        end
      end

      def delete_button_tag(url, text: true, **opts)
        action = text && text.is_a?(String) ? text : 'Delete'

        content_tag('div', class: 'btn-group') do
          concat(delete_dropdown_opener(text && action, opts))
          concat(confirm_delete_dropdown(url, action))
        end
      end

      def form_for(obj, opts = {}, &block)
        opts[:builder] = BootstrapFormBuilder
        super(obj, opts, &block)
      end

      # Generates the wrapping code for validating a form. The selector is
      # passed to jQuery, and must uniquely select the form being validated.
      # `sym` is the object name when using a `form_for` helper to generate the
      # form.
      #
      # e.g.
      # <%=
      #   validate_form('#new-test-object', :test_object) do |v|
      #     v.validate_field(:name, ...) # Validate the test_object[name] field
      #   end
      # %>
      def validate_form(selector, sym = nil)
        opts = {
          type: 'application/vnd.aaf.lipstick.validations+json',
          'data-target': selector,
          class: 'lipstick-validations'
        }

        content_tag('script', opts) do
          validation_json(sym) { |v| yield v }.html_safe
        end
      end

      private

      def validation_json(sym)
        v = FormValidationBuilder.new(sym)
        yield v
        JSON.generate(v.to_h)
      end

      def delete_dropdown_opener(label, **opts)
        opts = { 'aria-expanded': 'false', 'data-toggle': 'dropdown',
                 type: 'button', 'aria-haspopup': 'true' }.merge(opts)

        add_css_class(opts, 'btn-small btn-danger dropdown-toggle')

        button_tag(opts) do
          concat(icon_tag('trash'))
          concat(' ')
          concat(label)
        end
      end

      def confirm_delete_dropdown(url, action)
        link = link_to("Confirm #{action}", url, class: 'confirm-delete')
        item = content_tag('li', link)
        content_tag('ul', item, class: 'dropdown-menu')
      end

      def add_css_class(opts, class_name)
        opts[:class] = "#{opts[:class]} #{class_name}".strip
      end
    end
  end
end