Marketplace: TaxRates connect to Bazaar

- #1137

OK this is a bit larger than I wanted it to be, but it should be a
purely structural change.

- Creates a `Marketplace::Bazaar` class to attach the `TaxRate`
- Migrates `TaxRate` connection to the `Bazaar` on migration
- Maintains the wiring of the `TaxRate` to the `Marketplace`

app/furniture/marketplace/bazaar.rb

@@ -0,0 +1,12 @@
+class Marketplace
+  # Serves as a connection point for cross-marketplace functionality, like
+  # {TaxRate} and {Shopper}.
+  class Bazaar < ::Space
+    has_many :marketplaces, through: :rooms, source: :furnitures, inverse_of: :bazaar, class_name: "Marketplace"
+    has_many :tax_rates, inverse_of: :bazaar, dependent: :destroy
+
+    def space
+      becomes(Space)
+    end
+  end
+end

app/furniture/marketplace/controller.rb

@@ -4,6 +4,9 @@ class Controller < FurnitureController
       @marketplace ||= policy_scope(Marketplace).find(params[:marketplace_id])
     end
 
+    delegate :bazaar, to: :marketplace
+    helper_method :bazaar
+
     helper_method def shopper
       @shopper ||= if current_person.is_a?(Guest)
         Shopper.find_or_create_by(id: session[:guest_shopper_id] ||= SecureRandom.uuid)

app/furniture/marketplace/marketplace.rb

@@ -5,11 +5,14 @@ class Marketplace < Furniture
     location(parent: :room)
     default_scope { where(furniture_kind: "marketplace") }
 
+    has_one :space, through: :room, inverse_of: :furnitures
+    has_one :bazaar, through: :room, inverse_of: :furnitures, source: :space, class_name: "Bazaar"
+    has_many :tax_rates, inverse_of: :marketplace
+
     has_many :products, inverse_of: :marketplace, dependent: :destroy
     has_many :carts, inverse_of: :marketplace, dependent: :destroy
     has_many :orders, inverse_of: :marketplace
 
-    has_many :tax_rates, inverse_of: :marketplace
     has_many :delivery_areas, inverse_of: :marketplace, dependent: :destroy
 
     setting :notify_emails

app/furniture/marketplace/products/_form.html.erb

@@ -3,7 +3,7 @@
     <%= render "text_field", { attribute: :name, form: f} %>
     <%= render "text_area", { attribute: :description, form: f} %>
     <%= render "money_field", { attribute: :price, form: f, min: 0, step: 0.01} %>
-    <%= render "collection_check_boxes", { attribute: :tax_rate_ids, collection: marketplace.tax_rates, value_method: :id, text_method: :label, form: f} %>
+    <%= render "collection_check_boxes", { attribute: :tax_rate_ids, collection: bazaar.tax_rates, value_method: :id, text_method: :label, form: f} %>
     <%- if product.photo.present? %>
       <div>
         <%= image_tag product.photo.variant(resize_to_limit: [150, 150]), class: "rounded-lg" %>

app/furniture/marketplace/tax_rate.rb

@@ -4,7 +4,8 @@ class TaxRate < Record
     location(parent: :marketplace)
 
     belongs_to :marketplace, inverse_of: :tax_rates
-    has_one :space, through: :marketplace
+    belongs_to :bazaar, inverse_of: :tax_rates
+    delegate :space, to: :bazaar
 
     validates :tax_rate, numericality: {greater_than: 0, less_than_or_equal_to: 100}, presence: true
     validates :label, presence: true

app/furniture/marketplace/tax_rates_controller.rb

@@ -77,16 +77,16 @@ def tax_rate_params
       @tax_rate ||= if params[:id]
         tax_rates.find(params[:id])
       elsif params[:tax_rate]
-        tax_rates.new(tax_rate_params)
+        tax_rates.new(tax_rate_params.merge(marketplace: marketplace))
       else
-        tax_rates.new
+        tax_rates.new(marketplace: marketplace)
       end.tap do |tax_rate|
         authorize(tax_rate)
       end
     end
 
     helper_method def tax_rates
-      @tax_rates ||= policy_scope(marketplace.tax_rates)
+      @tax_rates ||= policy_scope(bazaar.tax_rates)
     end
   end
 end

db/migrate/20230514174823_marketplace_add_bazaar_to_tax_rate.rb

@@ -0,0 +1,6 @@
+class MarketplaceAddBazaarToTaxRate < ActiveRecord::Migration[7.0]
+  disable_ddl_transaction!
+  def change
+    add_reference :marketplace_tax_rates, :bazaar, type: :uuid, null: true, index: {algorithm: :concurrently}
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2023_04_27_003441) do
+ActiveRecord::Schema[7.0].define(version: 2023_05_14_174823) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "pgcrypto"
   enable_extension "plpgsql"
@@ -22,12 +22,12 @@
     "expired",
     "ignored",
     "revoked",
-    "sent",
+    "sent"
   ], force: :cascade
 
   create_enum :membership_status, [
     "active",
-    "revoked",
+    "revoked"
   ], force: :cascade
 
   create_table "active_storage_attachments", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
@@ -190,6 +190,8 @@
     t.uuid "marketplace_id"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.uuid "bazaar_id"
+    t.index ["bazaar_id"], name: "index_marketplace_tax_rates_on_bazaar_id"
     t.index ["marketplace_id"], name: "index_marketplace_tax_rates_on_marketplace_id"
   end
 

lib/tasks/release.rake

@@ -5,5 +5,13 @@ namespace :release do
   task after_build: [:environment, "db:prepare"] do
     Lockbox.migrate(Marketplace::Order)
     SystemTestSpace.prepare
+    Marketplace::TaxRate.all.find_each do |tax_rate|
+      if tax_rate.marketplace.blank?
+        Marketplace::ProductTaxRate.where(tax_rate: tax_rate).each(&:destroy!)
+        tax_rate.destroy!
+        next
+      end
+      tax_rate.update!(bazaar: tax_rate.marketplace.bazaar)
+    end
   end
 end

spec/factories/furniture/marketplace.rb

@@ -63,6 +63,10 @@
     end
   end
 
+  factory :marketplace_bazaar, class: "Marketplace::Bazaar" do
+    sequence(:name) { |n| "The Market of #{Faker::Fantasy::Tolkien.location} #{n}" }
+  end
+
   factory :marketplace_product, class: "Marketplace::Product" do
     name { Faker::TvShows::DrWho.specie }
     price_cents { Random.rand(1_00..999_99) }
@@ -160,9 +164,10 @@
   end
 
   factory :marketplace_tax_rate, class: "Marketplace::TaxRate" do
+    marketplace { association(:marketplace) }
+    bazaar { marketplace&.bazaar }
     label { "#{Faker::TvShows::RuPaul.queen} Tax" }
     tax_rate { (1..45).to_a.sample }
-    marketplace { association(:marketplace) }
   end
 
   factory :marketplace_delivery_area, class: "Marketplace::DeliveryArea" do

spec/furniture/marketplace/bazaar_spec.rb

@@ -0,0 +1,6 @@
+require "rails_helper"
+
+RSpec.describe Marketplace::Bazaar, type: :model do
+  it { is_expected.to have_many(:marketplaces).through(:rooms).inverse_of(:bazaar) }
+  it { is_expected.to have_many(:tax_rates).inverse_of(:bazaar).dependent(:destroy) }
+end

spec/furniture/marketplace/tax_rate_spec.rb

@@ -7,6 +7,6 @@
 
   it { is_expected.to have_many(:product_tax_rates).inverse_of(:tax_rate) }
   it { is_expected.to have_many(:products).through(:product_tax_rates).inverse_of(:tax_rates) }
-  it { is_expected.to have_one(:space).through(:marketplace) }
+  it { is_expected.to belong_to(:bazaar).inverse_of(:tax_rates) }
   it { is_expected.to belong_to(:marketplace).inverse_of(:tax_rates) }
 end

spec/furniture/marketplace/tax_rates_controller_request_spec.rb

@@ -28,6 +28,10 @@
     end
 
     it { is_expected.to redirect_to(marketplace.location(child: :tax_rates)) }
+
+    specify do
+      expect { perform_request }.to change { marketplace.tax_rates.count }.by(1)
+    end
   end
 
   describe "#edit" do