openfoodfoundation/openfoodnetwork

# frozen_string_literal: true

module Api
  module V0
    class OrderCyclesController < Api::V0::BaseController
      include EnterprisesHelper
      include ApiActionCaching

      skip_authorization_check
      skip_before_action :authenticate_user, :ensure_api_key, only: [:taxons, :properties]

      caches_action :taxons, :properties,
                    expires_in: CacheService::FILTERS_EXPIRY,
                    cache_path: proc { |controller| controller.request.url }

      def products
        return render_no_products unless order_cycle.open?

        products = ProductsRenderer.new(
          distributor,
          order_cycle,
          customer,
          search_params
        ).products_json

        render plain: products
      rescue ProductsRenderer::NoProducts
        render_no_products
      end

      def taxons
        taxons = Spree::Taxon.
          joins(:products).
          where(spree_products: { id: distributed_products }).
          select('DISTINCT spree_taxons.*')

        render plain: ActiveModel::ArraySerializer.new(
          taxons, each_serializer: Api::TaxonSerializer
        ).to_json
      end

      def properties
        render plain: ActiveModel::ArraySerializer.new(
          product_properties | producer_properties, each_serializer: Api::PropertySerializer
        ).to_json
      end

      private

      def render_no_products
        render status: :not_found, json: {}
      end

      def product_properties
        Spree::Property.
          joins(:products).
          where(spree_products: { id: distributed_products }).
          select('DISTINCT spree_properties.*')
      end

      def producer_properties
        producers = Enterprise.
          joins(:supplied_products).
          where(spree_products: { id: distributed_products })

        Spree::Property.
          joins(:producer_properties).
          where(producer_properties: { producer_id: producers }).
          select('DISTINCT spree_properties.*')
      end

      def search_params
        params.slice :q, :page, :per_page
      end

      def distributor
        @distributor ||= Enterprise.find_by(id: params[:distributor])
      end

      def order_cycle
        @order_cycle ||= OrderCycle.find_by(id: params[:id])
      end

      def customer
        @current_api_user&.customer_of(distributor) || nil
      end

      def distributed_products
        OrderCycles::DistributedProductsService.new(distributor, order_cycle,
                                                    customer).products_relation
      end
    end
  end
end