module ActiveScaffold
  module Helpers
    # All extra helpers that should be included in the View.
    # Also a dumping ground for uncategorized helpers.
    module ActionLinkHelpers
      # params which mustn't be copying to nested links
      NESTED_PARAMS = %i[eid embedded association parent_scaffold].freeze

      def skip_action_link?(link, *args)
        !link.ignore_method.nil? && controller.respond_to?(link.ignore_method, true) && controller.send(link.ignore_method, *args)
      end

      def action_link_authorized?(link, *args)
        auth, reason =
          if link.security_method_set? || controller.respond_to?(link.security_method, true)
            controller.send(link.security_method, *args)
          else
            args.empty? ? true : args.first.authorized_for?(:crud_type => link.crud_type, :action => link.action, :reason => true)
          end
        [auth, reason]
      end

      def display_dynamic_action_group(action_link, links, record_or_ul_options = nil, ul_options = nil)
        ul_options = record_or_ul_options if ul_options.nil? && record_or_ul_options.is_a?(Hash)
        record = record_or_ul_options unless record_or_ul_options.is_a?(Hash)
        html = content_tag :ul, ul_options do
          safe_join(links.map { |link| content_tag :li, link })
        end
        raw "ActiveScaffold.display_dynamic_action_group('#{get_action_link_id action_link, record}', '#{escape_javascript html}');" # rubocop:disable Rails/OutputSafety
      end

      def display_action_links(action_links, record, options, &block)
        options[:level_0_tag] ||= nil
        options[:options_level_0_tag] ||= nil
        options[:level] ||= 0
        options[:first_action] = true
        output = ActiveSupport::SafeBuffer.new

        action_links.each(:reverse => options.delete(:reverse), :groups => true) do |link|
          if link.is_a? ActiveScaffold::DataStructures::ActionLinks
            unless link.empty?
              options[:level] += 1
              content = display_action_links(link, record, options, &block)
              options[:level] -= 1
              if content.present?
                output << display_action_link(link, content, record, options)
                options[:first_action] = false
              end
            end
          elsif !skip_action_link?(link, *Array(options[:for]))
            authorized, reason = action_link_authorized?(link, *Array(options[:for]))
            next if !authorized && options[:skip_unauthorized]
            output << display_action_link(link, nil, record, options.merge(:authorized => authorized, :not_authorized_reason => reason))
            options[:first_action] = false
          end
        end
        output
      end

      def display_action_link(link, content, record, options)
        if content
          html_classes = hover_via_click? ? 'hover_click ' : ''
          if (options[:level]).zero?
            html_classes << 'action_group'
            group_tag = :div
          else
            html_classes << 'top' if options[:first_action]
            group_tag = :li
          end
          content = content_tag(group_tag, :class => html_classes.presence, :onclick => ('' if hover_via_click?)) do
            content_tag(:div, as_(link.label), :class => link.name.to_s.downcase) << content_tag(:ul, content)
          end
        else
          content = render_action_link(link, record, options)
          content = content_tag(:li, content, :class => ('top' if options[:first_action])) unless (options[:level]).zero?
        end
        content = content_tag(options[:level_0_tag], content, options[:options_level_0_tag]) if (options[:level]).zero? && options[:level_0_tag]
        content
      end

      def render_action_link(link, record = nil, options = {})
        if link.action.nil? || link.column&.association&.polymorphic?
          link = action_link_to_inline_form(link, record) if link.column&.association
          options[:authorized] = false if link.action.nil? || link.controller.nil?
          options.delete :link if link.crud_type == :create
        end
        if link.action.nil? || (link.type == :member && options.key?(:authorized) && !options[:authorized])
          html_class = "disabled #{link.action}#{" #{link.html_options[:class]}" if link.html_options[:class].present?}"
          html_options = {:link => action_link_text(link, options), :class => html_class, :title => options[:not_authorized_reason]}
          action_link_html(link, nil, html_options, record)
        else
          url = action_link_url(link, record)
          html_options = action_link_html_options(link, record, options)
          action_link_html(link, url, html_options, record)
        end
      end

      # setup the action link to inline form
      def action_link_to_inline_form(link, record)
        link = link.dup
        associated = record.send(link.column.association.name)
        if link.column.association&.polymorphic?
          link.controller = controller_path_for_activerecord(associated.class)
          return link if link.controller.nil?
        end
        link = configure_column_link(link, record, associated) if link.action.nil?
        link
      end

      def configure_column_link(link, record, associated, actions = nil)
        actions ||= link.controller_actions || []
        if column_empty?(associated) # if association is empty, we only can link to create form
          if actions.include?(:new)
            link.action = 'new'
            link.crud_type = :create
            link.label ||= :create_new
          end
        elsif actions.include?(:edit)
          link.action = 'edit'
          link.crud_type = :update
        elsif actions.include?(:show)
          link.action = 'show'
          link.crud_type = :read
        elsif actions.include?(:list)
          link.action = 'index'
          link.crud_type = :read
        end

        unless column_link_authorized?(link, link.column, record, associated)[0]
          link.action = nil
          # if action is edit and is not authorized, fallback to show if it's enabled
          if link.crud_type == :update && actions.include?(:show)
            link = configure_column_link(link, record, associated, [:show])
          end
        end
        link
      end

      def column_link_authorized?(link, column, record, associated)
        if column.association
          associated_for_authorized =
            if column.association.collection? || associated.nil?
              column.association.klass
            else
              associated
            end
          authorized, reason = associated_for_authorized.authorized_for?(:crud_type => link.crud_type, :reason => true)
          if link.crud_type == :create && authorized
            authorized, reason = record.authorized_for?(:crud_type => :update, :column => column.name, :reason => true)
          end
          [authorized, reason]
        else
          action_link_authorized?(link, record)
        end
      end

      def sti_record?(record)
        return unless active_scaffold_config.active_record?
        model = active_scaffold_config.model
        record && model.columns_hash.include?(model.inheritance_column) &&
          record[model.inheritance_column].present? && !record.instance_of?(model)
      end

      def cache_action_link_url?(link, record)
        active_scaffold_config.user.cache_action_link_urls && link.type == :member && !link.dynamic_parameters.is_a?(Proc) && !sti_record?(record)
      end

      def cached_action_link_url(link, record)
        @action_links_urls ||= {}
        @action_links_urls[link.name_to_cache.to_s] || begin
          url_options = cached_action_link_url_options(link, record)
          if cache_action_link_url?(link, record)
            @action_links_urls[link.name_to_cache.to_s] = url_for(url_options)
          else
            url_options.merge! eid: nil, embedded: nil if link.nested_link?
            url_for(params_for(url_options))
          end
        end
      end

      def replace_id_params_in_action_link_url(link, record, url)
        url = record ? url.sub('--ID--', record.to_param.to_s) : url.clone
        if link.column&.association&.singular?
          child_id = record.send(link.column.association.name)&.to_param
          if child_id.present?
            url.sub!('--CHILD_ID--', child_id)
          else
            url.sub!(/\w+=--CHILD_ID--&?/, '')
            url.sub!(/\?$/, '')
          end
        elsif nested?
          url.sub!('--CHILD_ID--', params[nested.param_name].to_s)
        end
        url
      end

      def add_query_string_to_cached_url(link, url)
        query_string, non_nested_query_string = query_string_for_action_links(link)
        nested_params = (!link.nested_link? && non_nested_query_string)
        if query_string || nested_params
          url << (url.include?('?') ? '&' : '?')
          url << query_string if query_string
          url << non_nested_query_string if nested_params
        end
        url
      end

      def action_link_url(link, record)
        url = replace_id_params_in_action_link_url(link, record, cached_action_link_url(link, record))
        url = add_query_string_to_cached_url(link, url) if @action_links_urls[link.name_to_cache.to_s]
        url
      end

      def column_in_params_conditions?(key)
        if key =~ /!$/
          conditions_from_params[1..-1].any? { |node| node.left.name.to_s == key[0..-2] }
        else
          conditions_from_params[0].include?(key)
        end
      end

      def ignore_param_for_nested?(key)
        NESTED_PARAMS.include?(key) || column_in_params_conditions?(key) || (nested? && nested.param_name == key)
      end

      def query_string_for_action_links(link)
        if defined?(@query_string) && link.parameters.none? { |k, _| @query_string_params.include? k }
          return [@query_string, @non_nested_query_string]
        end
        keep = true
        @query_string_params ||= Set.new
        query_string_options = {}
        non_nested_query_string_options = {}

        params_for.except(:controller, :action, :id).each do |key, value|
          @query_string_params << key
          if link.parameters.include? key
            keep = false
            next
          end
          if ignore_param_for_nested?(key)
            non_nested_query_string_options[key] = value
          else
            query_string_options[key] = value
          end
        end
        if nested_singular_association? && action_name == 'index'
          # pass current path as return_to, for nested listing on singular association, so forms doesn't return to parent listing
          @query_string_params << :return_to
          non_nested_query_string_options[:return_to] = request.fullpath
        end

        query_string = query_string_options.to_query if query_string_options.present?
        if non_nested_query_string_options.present?
          non_nested_query_string = "#{'&' if query_string}#{non_nested_query_string_options.to_query}"
        end
        if keep
          @query_string = query_string
          @non_nested_query_string = non_nested_query_string
        end
        [query_string, non_nested_query_string]
      end

      def cache_action_link_url_options?(link, record)
        active_scaffold_config.user.cache_action_link_urls && (link.type == :collection || !link.dynamic_parameters.is_a?(Proc)) && !sti_record?(record)
      end

      def cached_action_link_url_options(link, record)
        @action_links_url_options ||= {}
        @action_links_url_options[link.name_to_cache.to_s] || begin
          options = action_link_url_options(link, record)
          if cache_action_link_url_options?(link, record)
            @action_links_url_options[link.name_to_cache.to_s] = options
          end
          options
        end
      end

      def action_link_url_options(link, record)
        url_options = {:action => link.action}
        url_options[:id] = '--ID--' unless record.nil?
        url_options[:controller] = link.controller.to_s if link.controller
        url_options.merge! link.parameters if link.parameters
        if link.dynamic_parameters.is_a?(Proc)
          if record.nil?
            url_options.merge! instance_exec(&link.dynamic_parameters)
          else
            url_options.merge! instance_exec(record, &link.dynamic_parameters)
          end
        end
        if link.nested_link?
          url_options_for_nested_link(link.column, record, link, url_options)
        elsif nested?
          url_options[nested.param_name] = '--CHILD_ID--'
        end
        url_options_for_sti_link(link.column, record, link, url_options) unless record.nil? || active_scaffold_config.sti_children.nil?
        url_options[:_method] = link.method if !link.confirm? && link.inline? && link.method != :get
        url_options
      end

      def action_link_text(link, options)
        text = image_tag(link.image[:name], :size => link.image[:size], :alt => options[:link] || link.label, :title => options[:link] || link.label) if link.image
        text || options[:link]
      end

      def replaced_action_link_url_options(link, record)
        url = cached_action_link_url_options(link, record)
        url[:controller] ||= params[:controller]
        missing_options, url_options = url.partition { |_, v| v.nil? }
        replacements = {}
        replacements['--ID--'] = record.id.to_s if record
        if link.column&.association&.singular?
          replacements['--CHILD_ID--'] = record.send(link.column.association.name)&.id.to_s
        elsif nested?
          replacements['--CHILD_ID--'] = params[nested.param_name].to_s
        end
        url_options.collect! do |k, v|
          [k.to_s, replacements[v] || v]
        end
        [missing_options, url_options]
      end

      def action_link_selected?(link, record)
        missing_options, url_options = replaced_action_link_url_options(link, record)
        safe_params = params.to_unsafe_h
        (url_options - safe_params.to_a).blank? && missing_options.all? { |k, _| params[k].nil? }
      end

      def action_link_html_options(link, record, options)
        link_id = get_action_link_id(link, record)
        html_options = link.html_options.merge(:class => [link.html_options[:class], link.action.to_s].compact.join(' '))
        html_options[:link] = action_link_text(link, options)

        # Needs to be in html_options to as the adding _method to the url is no longer supported by Rails
        html_options[:method] = link.method if link.method != :get

        html_options[:data] ||= {}
        html_options[:data] = html_options[:data].deep_dup if html_options[:data].frozen?
        html_options[:data][:confirm] = link.confirm(h(record&.to_label)) if link.confirm?
        if !options[:page] && !options[:popup] && (options[:inline] || link.inline?)
          html_options[:class] << ' as_action'
          html_options[:data][:position] = link.position if link.position
          html_options[:data][:action] = link.action
          html_options[:data][:cancel_refresh] = true if link.refresh_on_close
          html_options[:data][:keep_open] = true if link.keep_open?
          html_options[:remote] = true
        end

        if link.toggle
          html_options[:class] << ' toggle'
          html_options[:class] << ' active' if action_link_selected?(link, record)
        end

        if !options[:page] && !options[:inline] && (options[:popup] || link.popup?)
          html_options[:target] = '_blank'
          html_options[:rel] = [html_options[:rel], 'noopener noreferrer'].compact.join(' ')
        end
        html_options[:id] = link_id
        if link.dhtml_confirm?
          unless link.inline?
            html_options[:class] << ' as_action'
            html_options[:page_link] = 'true'
          end
          html_options[:dhtml_confirm] = link.dhtml_confirm.value
          html_options[:onclick] = link.dhtml_confirm.onclick_function(controller, link_id)
        end
        html_options
      end

      def get_action_link_id(link, record = nil)
        column = link.column
        if column&.association && record
          associated = record.send(column.association.name) unless column.association.collection?
          id =
            if associated
              "#{column.association.name}-#{associated.id}-#{record.id}"
            else
              "#{column.association.name}-#{record.id}"
            end
        end
        id ||= record&.id&.to_s || (nested? ? nested_parent_id.to_s : '')
        action_link_id = ActiveScaffold::Registry.cache :action_link_id, link.name_to_cache.to_s do
          action_id = "#{id_from_controller("#{link.controller}-") if params[:parent_controller] || (link.controller && link.controller != controller.controller_path)}#{link.action}"
          action_link_id(action_id, '--ID--')
        end
        action_link_id.sub('--ID--', id)
      end

      def action_link_html(link, url, html_options, record)
        label = html_options.delete(:link)
        label ||= link.label
        if url.nil?
          content_tag(:a, label, html_options)
        else
          link_to(label, url, html_options)
        end
      end

      def url_options_for_nested_link(column, record, link, url_options)
        if column&.association
          url_options[:parent_scaffold] = controller_path
          url_options[column.model.name.foreign_key.to_sym] = url_options.delete(:id)
          url_options[:id] = if column.association.singular? && url_options[:action].to_sym != :index
                               '--CHILD_ID--'
                             end
        elsif link.parameters&.dig(:named_scope)
          url_options[:parent_scaffold] = controller_path
          url_options[active_scaffold_config.model.name.foreign_key.to_sym] = url_options.delete(:id)
          url_options[:id] = nil
        end
      end

      def url_options_for_sti_link(column, record, link, url_options)
        # need to find out controller of current record type and set parameters
        # it's quite difficult to detect an sti link
        # if link.column.nil? we are sure that it isn't a singular association inline autolink
        # however that will not work if a sti parent is a singular association inline autolink
        return unless link.column.nil?
        return if (sti_controller_path = controller_path_for_activerecord(record.class)).nil?
        url_options[:controller] = sti_controller_path
        url_options[:parent_sti] = controller_path
      end
    end
  end
end