# frozen_string_literal: true
require 'action_view/helpers'

module FoundationRailsHelper
  module FlashHelper
    # <div class="callout [success alert secondary]" data-closable>
    #   This is an alert box.
    #   <button name="button" type="submit" class="close-button" data-close="">
    #     <span>&times;</span>
    #   </button>
    # </div>
    DEFAULT_KEY_MATCHING = {
      alert:     :alert,
      notice:    :success,
      info:      :info,
      secondary: :secondary,
      success:   :success,
      error:     :alert,
      warning:   :warning,
      primary:   :primary
    }.freeze

    # Displays the flash messages found in ActionDispatch's +flash+ hash using
    # Foundation's +callout+ component.
    #
    # Parameters:
    # * +closable+ - A boolean to determine whether the displayed flash messages
    # should be closable by the user. Defaults to true.
    # * +key_matching+ - A Hash of key/value pairs mapping flash keys to the
    # corresponding class to use for the callout box.
    def display_flash_messages(closable: true, key_matching: {})
      key_matching = DEFAULT_KEY_MATCHING.merge(key_matching)
      key_matching.default = :primary

      capture do
        flash.each do |key, value|
          next if ignored_key?(key.to_sym)

          alert_class = key_matching[key.to_sym]
          concat alert_box(value, alert_class, closable)
        end
      end
    end

    private

    def alert_box(value, alert_class, closable)
      options = { class: "flash callout #{alert_class}" }
      options[:data] = { closable: '' } if closable
      content_tag(:div, options) do
        concat value
        concat close_link if closable
      end
    end

    def close_link
      button_tag(
        class: 'close-button',
        type: 'button',
        data: { close: '' },
        aria: { label: 'Dismiss alert' }
      ) do
        content_tag(:span, '&times;'.html_safe, aria: { hidden: true })
      end
    end

    def ignored_key?(key)
      FoundationRailsHelper.configuration.ignored_flash_keys.include?(key)
    end
  end
end