Move all business logic to `lib`

It wasn't clear why certain business logic should live in `app/services`
while other should live in `lib`. By unifying everything in one directory,
we make it easier for developers to inspect the code and reduce the
cognitive load when implementing new classes.

9 files changed, 0 insertions, 275 deletions

diff --git a/app/services/solidus_subscriptions/checkout.rb b/app/services/solidus_subscriptions/checkout.rb
deleted file mode 100644
index 83fc35c..0000000
--- a/app/services/solidus_subscriptions/checkout.rb
+++ /dev/null
@@ -1,73 +0,0 @@
-# frozen_string_literal: true
-
-module SolidusSubscriptions
-  class Checkout
-    attr_reader :installment
-
-    def initialize(installment)
-      @installment = installment
-    end
-
-    def process
-      order = create_order
-
-      begin
-        populate_order(order)
-        finalize_order(order)
-
-        SolidusSubscriptions.configuration.success_dispatcher_class.new(installment, order).dispatch
-      rescue StateMachines::InvalidTransition
-        if order.payments.any?(&:failed?)
-          SolidusSubscriptions.configuration.payment_failed_dispatcher_class.new(installment, order).dispatch
-        else
-          SolidusSubscriptions.configuration.failure_dispatcher_class.new(installment, order).dispatch
-        end
-      rescue ::Spree::Order::InsufficientStock
-        SolidusSubscriptions.configuration.out_of_stock_dispatcher_class.new(installment, order).dispatch
-      end
-
-      order
-    end
-
-    private
-
-    def create_order
-      ::Spree::Order.create(
-        user: installment.subscription.user,
-        email: installment.subscription.user.email,
-        store: installment.subscription.store || ::Spree::Store.default,
-        subscription_order: true,
-        subscription: installment.subscription
-      )
-    end
-
-    def populate_order(order)
-      installment.subscription.line_items.each do |line_item|
-        order.contents.add(line_item.subscribable, line_item.quantity)
-      end
-    end
-
-    def finalize_order(order)
-      ::Spree::PromotionHandler::Cart.new(order).activate
-      order.recalculate
-
-      order.checkout_steps[0...-1].each do
-        case order.state
-        when 'address'
-          order.ship_address = installment.subscription.shipping_address_to_use
-          order.bill_address = installment.subscription.billing_address_to_use
-        when 'payment'
-          order.payments.create(
-            payment_method: installment.subscription.payment_method_to_use,
-            source: installment.subscription.payment_source_to_use,
-            amount: order.total,
-          )
-        end
-
-        order.next!
-      end
-
-      order.complete!
-    end
-  end
-end
diff --git a/app/services/solidus_subscriptions/dispatcher/base.rb b/app/services/solidus_subscriptions/dispatcher/base.rb
deleted file mode 100644
index 30c5034..0000000
--- a/app/services/solidus_subscriptions/dispatcher/base.rb
+++ /dev/null
@@ -1,18 +0,0 @@
-# frozen_string_literal: true
-
-module SolidusSubscriptions
-  module Dispatcher
-    class Base
-      attr_reader :installment, :order
-
-      def initialize(installment, order)
-        @installment = installment
-        @order = order
-      end
-
-      def dispatch
-        raise NotImplementedError
-      end
-    end
-  end
-end
diff --git a/app/services/solidus_subscriptions/dispatcher/failure_dispatcher.rb b/app/services/solidus_subscriptions/dispatcher/failure_dispatcher.rb
deleted file mode 100644
index 54f8f2b..0000000
--- a/app/services/solidus_subscriptions/dispatcher/failure_dispatcher.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-# frozen_string_literal: true
-
-module SolidusSubscriptions
-  module Dispatcher
-    class FailureDispatcher < Base
-      def dispatch
-        order.touch(:completed_at)
-        order.cancel
-        installment.failed!(order)
-      end
-    end
-  end
-end
diff --git a/app/services/solidus_subscriptions/dispatcher/out_of_stock_dispatcher.rb b/app/services/solidus_subscriptions/dispatcher/out_of_stock_dispatcher.rb
deleted file mode 100644
index fe3e701..0000000
--- a/app/services/solidus_subscriptions/dispatcher/out_of_stock_dispatcher.rb
+++ /dev/null
@@ -1,11 +0,0 @@
-# frozen_string_literal: true
-
-module SolidusSubscriptions
-  module Dispatcher
-    class OutOfStockDispatcher < Base
-      def dispatch
-        installment.out_of_stock
-      end
-    end
-  end
-end
diff --git a/app/services/solidus_subscriptions/dispatcher/payment_failed_dispatcher.rb b/app/services/solidus_subscriptions/dispatcher/payment_failed_dispatcher.rb
deleted file mode 100644
index a56332e..0000000
--- a/app/services/solidus_subscriptions/dispatcher/payment_failed_dispatcher.rb
+++ /dev/null
@@ -1,19 +0,0 @@
-# frozen_string_literal: true
-
-module SolidusSubscriptions
-  module Dispatcher
-    class PaymentFailedDispatcher < Base
-      def dispatch
-        order.touch(:completed_at)
-        order.cancel
-        installment.payment_failed!(order)
-
-        ::Spree::Event.fire(
-          'solidus_subscriptions.installment_failed_payment',
-          installment: installment,
-          order: order,
-        )
-      end
-    end
-  end
-end
diff --git a/app/services/solidus_subscriptions/dispatcher/success_dispatcher.rb b/app/services/solidus_subscriptions/dispatcher/success_dispatcher.rb
deleted file mode 100644
index 0ae71dc..0000000
--- a/app/services/solidus_subscriptions/dispatcher/success_dispatcher.rb
+++ /dev/null
@@ -1,17 +0,0 @@
-# frozen_string_literal: true
-
-module SolidusSubscriptions
-  module Dispatcher
-    class SuccessDispatcher < Base
-      def dispatch
-        installment.success!(order)
-
-        ::Spree::Event.fire(
-          'solidus_subscriptions.installment_succeeded',
-          installment: installment,
-          order: order,
-        )
-      end
-    end
-  end
-end
diff --git a/app/services/solidus_subscriptions/line_item_builder.rb b/app/services/solidus_subscriptions/line_item_builder.rb
deleted file mode 100644
index c9aedb9..0000000
--- a/app/services/solidus_subscriptions/line_item_builder.rb
+++ /dev/null
@@ -1,36 +0,0 @@
-# frozen_string_literal: true
-
-# This class is responsible for taking SubscriptionLineItems and building
-# them into Spree::LineItems which can be added to an order
-module SolidusSubscriptions
-  class LineItemBuilder
-    attr_reader :subscription_line_items
-
-    # Get a new instance of a LineItemBuilder
-    #
-    # @param subscription_line_items[Array<SolidusSubscriptions::LineItem>] The
-    #   subscription line item to be converted into a Spree::LineItem
-    #
-    # @return [SolidusSubscriptions::LineItemBuilder]
-    def initialize(subscription_line_items)
-      @subscription_line_items = subscription_line_items
-    end
-
-    # Get a new (unpersisted) Spree::LineItem which matches the details of
-    # :subscription_line_item
-    #
-    # @return [Array<Spree::LineItem>]
-    def spree_line_items
-      line_items = subscription_line_items.map do |subscription_line_item|
-        variant = subscription_line_item.subscribable
-
-        next unless variant.can_supply?(subscription_line_item.quantity)
-
-        ::Spree::LineItem.new(variant: variant, quantity: subscription_line_item.quantity)
-      end
-
-      # Either all line items for an installment are fulfilled or none are
-      line_items.all? ? line_items : []
-    end
-  end
-end
diff --git a/app/services/solidus_subscriptions/subscription_generator.rb b/app/services/solidus_subscriptions/subscription_generator.rb
deleted file mode 100644
index 8153912..0000000
--- a/app/services/solidus_subscriptions/subscription_generator.rb
+++ /dev/null
@@ -1,65 +0,0 @@
-# frozen_string_literal: true
-
-# This module is responsible for taking SolidusSubscriptions::LineItem
-# objects and creating SolidusSubscriptions::Subscription Objects
-module SolidusSubscriptions
-  module SubscriptionGenerator
-    extend self
-
-    SubscriptionConfiguration = Struct.new(:interval_length, :interval_units, :end_date)
-
-    # Create and persist a subscription for a collection of subscription
-    #   line items
-    #
-    # @param subscription_line_items [Array<SolidusSubscriptions::LineItem>] The
-    #   subscription_line_items to be activated
-    #
-    # @return [SolidusSubscriptions::Subscription]
-    def activate(subscription_line_items)
-      return if subscription_line_items.empty?
-
-      order = subscription_line_items.first.order
-      configuration = subscription_configuration(subscription_line_items.first)
-
-      subscription_attributes = {
-        user: order.user,
-        line_items: subscription_line_items,
-        store: order.store,
-        shipping_address: order.ship_address,
-        billing_address: order.bill_address,
-        payment_source: order.payments.valid.last&.payment_source,
-        payment_method: order.payments.valid.last&.payment_method,
-        **configuration.to_h
-      }
-
-      Subscription.create!(subscription_attributes) do |sub|
-        sub.actionable_date = sub.next_actionable_date
-      end
-    end
-
-    # Group a collection of line items by common subscription configuration
-    # options. Grouped subscription_line_items can belong to a single
-    # subscription.
-    #
-    # @param subscription_line_items [Array<SolidusSubscriptions::LineItem>] The
-    #   subscription_line_items to be grouped.
-    #
-    # @return [Array<Array<SolidusSubscriptions::LineItem>>]
-    def group(subscription_line_items)
-      subscription_line_items.group_by do |li|
-        subscription_configuration(li)
-      end.
-        values
-    end
-
-    private
-
-    def subscription_configuration(subscription_line_item)
-      SubscriptionConfiguration.new(
-        subscription_line_item.interval_length,
-        subscription_line_item.interval_units,
-        subscription_line_item.end_date
-      )
-    end
-  end
-end
diff --git a/app/services/solidus_subscriptions/subscription_line_item_builder.rb b/app/services/solidus_subscriptions/subscription_line_item_builder.rb
deleted file mode 100644
index 7354102..0000000
--- a/app/services/solidus_subscriptions/subscription_line_item_builder.rb
+++ /dev/null
@@ -1,23 +0,0 @@
-# frozen_string_literal: true
-
-module SolidusSubscriptions
-  module SubscriptionLineItemBuilder
-    private
-
-    def create_subscription_line_item(line_item)
-      SolidusSubscriptions::LineItem.create!(
-        subscription_params.merge(spree_line_item: line_item)
-      )
-
-      # Rerun the promotion handler to pickup subscription promotions
-      ::Spree::PromotionHandler::Cart.new(line_item.order).activate
-      line_item.order.recalculate
-    end
-
-    def subscription_params
-      params.require(:subscription_line_item).permit(
-        SolidusSubscriptions.configuration.subscription_line_item_attributes
-      )
-    end
-  end
-end