module Dhatu
  class CategoriesController < ResourceController
    
    before_action :require_update_permission, only: [:update_status, :make_parent, :mark_as_featured, :remove_from_featured]
    before_action :get_features

    def update_status
      @category = @r_object = Dhatu::Category.find(params[:id])
      case params[:status]
      when "unpublished"
        @category.unpublish!
      when "removed"
        @category.remove!
      when "published"
        @category.publish!
      end
      set_notification(true, I18n.t('status.success'), I18n.t('state.changed', item: default_item_name.titleize, new_state: @r_object.status))
      render_row
    end

    def make_parent
      @category = @r_object = Dhatu::Category.find(params[:id])
      @category.update_attribute(:parent_id, nil)
      get_collections
      render_accordingly
    end

    def mark_as_featured
      @category = @r_object = Dhatu::Category.find(params[:id])
      @category.update_attribute(:featured, true) if @category.published?
      render_row
    end

    def remove_from_featured
      @category = @r_object = Dhatu::Category.find(params[:id])
      @category.update_attribute(:featured, false) if @category.featured?
      render_row
    end

    private

    def save_resource
      if @r_object.valid?
        previous_parent_id = @r_object.parent_id_was
        @r_object.save
        if @r_object.parent_id != previous_parent_id
          @r_object.parent.set_end_node!
          previous_category = Dhatu::Category.find_by_id(previous_parent_id)
          previous_category.set_end_node! if previous_category
        end

        get_collections if @resource_options[:layout] = :table
        set_flash_message(I18n.translate("forms.save", item: default_item_name.titleize), :success) 
      end
      set_resource_notification(@r_object)
      action_name = params[:action].to_s == "create" ? "new" : "edit"
      url = @r_object.persisted? ? resource_url(@r_object) : nil
      render_or_redirect(@r_object.errors.any?, url, action_name)
    end

    def get_features
      @features = Feature.categorisable.published.order("name ASC").all
    end

    def permitted_params
      params[:category].permit(:name, :permalink, :one_liner, :description, :parent_id, :priority, :category_type)
    end

    def set_navs
      set_nav("admin/categories")
    end

    def get_collections
      @current_category = Dhatu::Category.find_by_id(params[:parent_id])

      filter_param_mapping
      parse_filters

      if @query
        @relation = Dhatu::Category.includes(:parent)
      else
        if @current_category
          @relation = @current_category.sub_categories.includes(:parent)
        else
          @relation = Dhatu::Category.where("parent_id IS NULL")
        end
      end
      
      @relation = @relation.order("priority ASC, name ASC")
      apply_filters
      @categories = @r_objects = @relation.page(@current_page).per(@per_page)
      return true
    end

    def apply_filters
      @category_type = params[:category_type] || "All"
      case @category_type 
      when "none"
        @relation = @relation.joins("LEFT JOIN features f on f.name = categories.category_type").where("f.name is NULL")
      when "all_including_children"
        @relation = Dhatu::Category.where("")
      when "All"
        @relation = @relation.where("")
      else 
        @relation = @relation.where("category_type = ?", params[:category_type])
      end
      @relation = @relation.search(@query) if @query
      @relation = @relation.status(@status) if @status
      @relation = @relation.featured(@featured) unless @featured.nil?
    end

    def filter_config
      @filter_config = {
        boolean_filters: [
          { filter_name: :featured }
        ],
        string_filters: [
          { filter_name: :query },
          { filter_name: :status }
        ],
        reference_filters: [],
        variable_filters: [],
      }
    end

    def resource_controller_configuration
      {
        page_title: "Categories",
        js_view_path: "/kuppayam/workflows/peacock",
        view_path: "/dhatu/categories",
        collection_name: :categories,
        item_name: :category,
        class: Dhatu::Category
      }
    end

    def breadcrumbs_configuration
      {
        heading: "Manage Categories",
        icon: "fa-sitemap",
        description: "Listing all Categories",
        links: [{name: "Home", link: breadcrumb_home_path, icon: 'fa-home'}, 
                  {name: "Manage Categories", link: dhatu.categories_path, icon: 'fa-sitemap', active: true}]
      }
    end

    def permitted_params
      params.require("dhatu/category").permit(:name, :one_liner, :description, :priority, :parent_id, :category_type)
    end

    def set_navs
      set_nav("dhatu/categories")
    end

  end
end