Refactor logger usage and add discount field to checkout

This commit refactors the logger usage in various files to make it more streamlined and consistent. It also introduces a new 'enableDiscountField' feature for the checkout that can be toggled on specific products. This allows customers to apply discounts at checkout if the product or subscription plan has the 'enableDiscountField' set to true.

apps/web/app/(dashboard)/home/(user)/billing/_lib/server/user-billing.service.ts

@@ -17,6 +17,8 @@ import billingConfig from '~/config/billing.config';
 import pathsConfig from '~/config/paths.config';
 
 export class UserBillingService {
+  private readonly namespace = 'billing.personal-account';
+
   constructor(private readonly client: SupabaseClient<Database>) {}
 
   async createCheckoutSession({
@@ -73,6 +75,7 @@ export class UserBillingService {
         customerId,
         plan,
         variantQuantities: [],
+        enableDiscountField: product.enableDiscountField,
       });
 
       logger.info(
@@ -111,6 +114,7 @@ export class UserBillingService {
     }
 
     const service = await getBillingGatewayProvider(this.client);
+    const logger = await getLogger();
 
     const accountId = data.id;
     const customerId = await getCustomerIdFromAccountId(accountId);
@@ -120,14 +124,14 @@ export class UserBillingService {
       throw new Error('Customer not found');
     }
 
-    const logger = await getLogger();
+    const ctx = {
+      name: this.namespace,
+      customerId,
+      accountId,
+    };
 
     logger.info(
-      {
-        name: `billing.personal-account`,
-        customerId,
-        accountId,
-      },
+      ctx,
       `User requested a Billing Portal session. Contacting provider...`,
     );
 
@@ -144,8 +148,7 @@ export class UserBillingService {
       logger.error(
         {
           error,
-          customerId,
-          accountId,
+          ...ctx,
         },
         `Failed to create a Billing Portal session`,
       );
@@ -155,14 +158,7 @@ export class UserBillingService {
       );
     }
 
-    logger.info(
-      {
-        name: `billing.personal-account`,
-        customerId,
-        accountId,
-      },
-      `Session successfully created.`,
-    );
+    logger.info(ctx, `Session successfully created.`);
 
     // redirect user to billing portal
     return url;