FEATURE: Site Setting to enable automatic tax (#218)

FEATURE: Site Setting to enable automatic tax

There is now a new site setting called
`discourse_subscriptions_enable_automatic_tax` that can be enabled if
you would like to automatically compute tax rates on all new
subscriptions.

app/controllers/discourse_subscriptions/subscribe_controller.rb

@@ -85,14 +85,19 @@ module DiscourseSubscriptions
 
           promo_code_id = promo_code[:id] if promo_code
 
-          transaction =
-            ::Stripe::Subscription.create(
-              customer: customer[:id],
-              items: [{ price: params[:plan] }],
-              metadata: metadata_user,
-              trial_period_days: trial_days,
-              promotion_code: promo_code_id,
-            )
+          subscription_params = {
+            customer: customer[:id],
+            items: [{ price: params[:plan] }],
+            metadata: metadata_user,
+            trial_period_days: trial_days,
+            promotion_code: promo_code_id,
+          }
+
+          if SiteSetting.discourse_subscriptions_enable_automatic_tax
+            subscription_params[:automatic_tax] = { enabled: true }
+          end
+
+          transaction = ::Stripe::Subscription.create(subscription_params)
 
           payment_intent = retrieve_payment_intent(transaction[:latest_invoice]) if transaction[
             :status
@@ -100,7 +105,13 @@ module DiscourseSubscriptions
         else
           coupon_id = promo_code[:coupon][:id] if promo_code && promo_code[:coupon] &&
             promo_code[:coupon][:id]
-          invoice = ::Stripe::Invoice.create(customer: customer[:id])
+
+          invoice_params = { customer: customer[:id] }
+          if SiteSetting.discourse_subscriptions_enable_automatic_tax
+            invoice_params[:automatic_tax] = { enabled: true }
+          end
+          invoice = ::Stripe::Invoice.create(invoice_params)
+
           invoice_item =
             ::Stripe::InvoiceItem.create(
               customer: customer[:id],

config/locales/client.en.yml

@@ -21,6 +21,8 @@ en:
     discourse_subscriptions_campaign_banner_bg_image: Upload a custom image to use as the background on the campaign banner.
     discourse_subscriptions_campaign_show_contributors: Show avatars of the most recent purchases of subscription products.
     discourse_subscriptions_campaign_product: The Stripe product id to send supporters when they click the button on the campaign. If this setting is blank, supporters will be directed to the main products page.
+    discourse_subscriptions_enable_automatic_tax: Enables automatic tax calculation which will automatically compute tax rates on all invoices generated by the subscription.
+
     errors:
       discourse_patrons_amount_must_be_currency: "Currency amounts must be currencies without dollar symbol (eg 1.50)"
   js:

config/settings.yml

@@ -80,3 +80,5 @@ discourse_subscriptions:
   discourse_subscriptions_campaign_group:
     default: ""
     hidden: true
+  discourse_subscriptions_enable_automatic_tax:
+    default: false

spec/requests/subscribe_controller_spec.rb

@@ -237,7 +237,8 @@ RSpec.describe DiscourseSubscriptions::SubscribeController do
       describe "#create" do
         before { ::Stripe::Customer.expects(:create).returns(id: "cus_1234") }
 
-        it "creates a subscription" do
+        it "creates a subscription without automatic_tax param" do
+          SiteSetting.discourse_subscriptions_enable_automatic_tax = false
           ::Stripe::Price.expects(:retrieve).returns(
             type: "recurring",
             product: "product_12345",
@@ -247,18 +248,57 @@ RSpec.describe DiscourseSubscriptions::SubscribeController do
             },
           )
 
+          expected_subscription_params = {
+            customer: "cus_1234",
+            items: [{ price: "plan_1234" }],
+            metadata: {
+              user_id: user.id,
+              username: user.username_lower,
+            },
+            trial_period_days: 0,
+            promotion_code: nil,
+          }
+
           ::Stripe::Subscription
             .expects(:create)
-            .with(
-              customer: "cus_1234",
-              items: [price: "plan_1234"],
-              metadata: {
-                user_id: user.id,
-                username: user.username_lower,
-              },
+            .with do |params|
+              params == expected_subscription_params && !params.key?(:automatic_tax)
+            end
+            .returns(status: "active", customer: "cus_1234")
+
+          expect {
+            post "/s/create.json", params: { plan: "plan_1234", source: "tok_1234" }
+          }.to change { DiscourseSubscriptions::Customer.count }
+        end
+
+        it "creates a subscription with automatic tax" do
+          SiteSetting.discourse_subscriptions_enable_automatic_tax = true
+          ::Stripe::Price.expects(:retrieve).returns(
+            type: "recurring",
+            product: "product_12345",
+            metadata: {
+              group_name: "awesome",
               trial_period_days: 0,
-              promotion_code: nil,
-            )
+            },
+          )
+
+          expected_subscription_params = {
+            customer: "cus_1234",
+            items: [{ price: "plan_1234" }],
+            metadata: {
+              user_id: user.id,
+              username: user.username_lower,
+            },
+            trial_period_days: 0,
+            promotion_code: nil,
+            automatic_tax: {
+              enabled: true,
+            },
+          }
+
+          ::Stripe::Subscription
+            .expects(:create)
+            .with(expected_subscription_params)
             .returns(status: "active", customer: "cus_1234")
 
           expect {
@@ -295,7 +335,8 @@ RSpec.describe DiscourseSubscriptions::SubscribeController do
           expect(response.status).to eq 422
         end
 
-        it "creates a one time payment subscription" do
+        it "creates a one time payment subscription without automatic tax" do
+          SiteSetting.discourse_subscriptions_enable_automatic_tax = false
           ::Stripe::Price.expects(:retrieve).returns(
             type: "one_time",
             product: "product_12345",
@@ -306,7 +347,52 @@ RSpec.describe DiscourseSubscriptions::SubscribeController do
 
           ::Stripe::InvoiceItem.expects(:create)
 
-          ::Stripe::Invoice.expects(:create).returns(status: "open", id: "in_123")
+          expected_one_time_params = { customer: "cus_1234" }
+
+          ::Stripe::Invoice
+            .expects(:create)
+            .with { |params| params == expected_one_time_params && !params.key?(:automatic_tax) }
+            .returns(status: "open", id: "in_123")
+
+          ::Stripe::Invoice.expects(:finalize_invoice).returns(
+            id: "in_123",
+            status: "open",
+            payment_intent: "pi_123",
+          )
+
+          ::Stripe::Invoice.expects(:retrieve).returns(
+            id: "in_123",
+            status: "open",
+            payment_intent: "pi_123",
+          )
+
+          ::Stripe::PaymentIntent.expects(:retrieve).returns(status: "successful")
+
+          ::Stripe::Invoice.expects(:pay).returns(status: "paid", customer: "cus_1234")
+
+          expect {
+            post "/s/create.json", params: { plan: "plan_1234", source: "tok_1234" }
+          }.to change { DiscourseSubscriptions::Customer.count }
+        end
+
+        it "creates a one time payment subscription" do
+          SiteSetting.discourse_subscriptions_enable_automatic_tax = true
+          ::Stripe::Price.expects(:retrieve).returns(
+            type: "one_time",
+            product: "product_12345",
+            metadata: {
+              group_name: "awesome",
+            },
+          )
+
+          ::Stripe::InvoiceItem.expects(:create)
+
+          expected_one_time_params = { customer: "cus_1234", automatic_tax: { enabled: true } }
+
+          ::Stripe::Invoice
+            .expects(:create)
+            .with(expected_one_time_params)
+            .returns(status: "open", id: "in_123")
 
           ::Stripe::Invoice.expects(:finalize_invoice).returns(
             id: "in_123",
@@ -410,18 +496,20 @@ RSpec.describe DiscourseSubscriptions::SubscribeController do
                 },
               )
 
+              expected_subscription_params = {
+                customer: "cus_1234",
+                items: [price: "plan_1234"],
+                metadata: {
+                  user_id: user.id,
+                  username: user.username_lower,
+                },
+                trial_period_days: 0,
+                promotion_code: "promo123",
+              }
+
               ::Stripe::Subscription
                 .expects(:create)
-                .with(
-                  customer: "cus_1234",
-                  items: [price: "plan_1234"],
-                  metadata: {
-                    user_id: user.id,
-                    username: user.username_lower,
-                  },
-                  trial_period_days: 0,
-                  promotion_code: "promo123",
-                )
+                .with(expected_subscription_params)
                 .returns(status: "active", customer: "cus_1234")
 
               expect {