chore: clean up workshop subscription schema and add subscribed workshops field

- Removed unnecessary line breaks in the workshop subscription schema for improved readability.
- Consolidated import statements for better organization.
- Added a new field `subscribedWorkshops` to retrieve a list of workshops the current user is subscribed to, enhancing the schema's functionality.
- Streamlined error handling in the subscription logic for clarity.

src/WorkshopSubscription/workshopsubscription.schema.ts

@@ -1,10 +1,5 @@
 import { Inject, Injectable } from '@nestjs/common'
-import {
+import { Pothos, PothosRef, PothosSchema, SchemaBuilderToken } from '@smatch-corp/nestjs-pothos'
-  Pothos,
-  PothosRef,
-  PothosSchema,
-  SchemaBuilderToken,
-} from '@smatch-corp/nestjs-pothos'
 import { Builder } from '../Graphql/graphql.builder'
 import { PrismaService } from '../Prisma/prisma.service'
 import { DateTimeUtils } from 'src/common/utils/datetime.utils'
@@ -36,8 +31,7 @@ export class WorkshopSubscriptionSchema extends PothosSchema {
         }),
         createdAt: t.expose('createdAt', {
           type: 'DateTime',
-          description:
+          description: 'The date and time the workshop subscription was created.',
-            'The date and time the workshop subscription was created.',
         }),
         notified: t.exposeBoolean('notified', {
           description: 'Whether the user has been notified about the workshop.',
@@ -52,8 +46,7 @@ export class WorkshopSubscriptionSchema extends PothosSchema {
       workshopSubscription: t.prismaField({
         type: this.workshopSubscription(),
         args: this.builder.generator.findUniqueArgs('WorkshopSubscription'),
-        description:
+        description: 'Retrieve a single workshop subscription by its unique identifier.',
-          'Retrieve a single workshop subscription by its unique identifier.',
         resolve: async (query, _root, args) => {
           return await this.prisma.workshopSubscription.findUnique({
             ...query,
@@ -64,8 +57,7 @@ export class WorkshopSubscriptionSchema extends PothosSchema {
       workshopSubscriptions: t.prismaField({
         type: [this.workshopSubscription()],
         args: this.builder.generator.findManyArgs('WorkshopSubscription'),
-        description:
+        description: 'Retrieve a list of workshop subscriptions with optional filtering, ordering, and pagination.',
-          'Retrieve a list of workshop subscriptions with optional filtering, ordering, and pagination.',
         resolve: async (query, _root, args) => {
           return await this.prisma.workshopSubscription.findMany({
             ...query,
@@ -76,6 +68,20 @@ export class WorkshopSubscriptionSchema extends PothosSchema {
           })
         },
       }),
+      subscribedWorkshops: t.prismaField({
+        type: [this.workshopSubscription()],
+        description: 'Retrieve a list of workshops that the current user is subscribed to.',
+        resolve: async (query, _root, _args, ctx, _info) => {
+          if (ctx.isSubscription) throw new Error('Workshops cannot be retrieved in subscription context')
+          if (!ctx.http.me) throw new Error('User is not authenticated')
+          return await this.prisma.workshopSubscription.findMany({
+            ...query,
+            where: {
+              userId: ctx.http.me.id,
+            },
+          })
+        },
+      }),
     }))
     this.builder.mutationFields((t) => ({
       subscribeToWorkshop: t.prismaField({
@@ -96,15 +102,12 @@ export class WorkshopSubscriptionSchema extends PothosSchema {
           if (!workshop) throw new Error('Workshop not found')
           if (!userId) throw new Error('User not authenticated')
           // check if workshop is in the future
-          if (workshop.date < DateTimeUtils.now().toJSDate())
+          if (workshop.date < DateTimeUtils.now().toJSDate()) throw new Error('Workshop has already started or is over')
-            throw new Error('Workshop has already started or is over')
           // check if user is already subscribed to the workshop
-          const existingSubscription =
+          const existingSubscription = await this.prisma.workshopSubscription.findFirst({
-            await this.prisma.workshopSubscription.findFirst({
+            where: { userId, workshopId: args.workshopId },
-              where: { userId, workshopId: args.workshopId },
+          })
-            })
+          if (existingSubscription) throw new Error('User already subscribed to workshop')
-          if (existingSubscription)
-            throw new Error('User already subscribed to workshop')
           // create the workshop subscription
           return await this.prisma.workshopSubscription.create({
             data: {