HOT-FIX: add workshop participant limit

src/repository/rpkm/rpkmRepository.ts

@@ -118,4 +118,48 @@ export class RpkmRepository {
       );
     }
   }
+
+  async getWorkshopParticipantCountsByTypeAndTime(
+    workshopType: WorkshopType,
+    workshopTime: number
+  ): Promise<number> {
+    try {
+      const count = await prisma.rPKMworkshop.count({
+        where: {
+          workshopType: workshopType,
+          workshopTime: workshopTime,
+        },
+      });
+      return count;
+    } catch (error) {
+      console.log(
+        `Error getting participant counts of RPKM workshops by type ${workshopType} and time ${workshopTime}: `,
+        error
+      );
+      throw new Error(
+        `Failed to get participant counts of RPKM workshops by type ${workshopType} and time ${workshopTime}.`
+      );
+    }
+  }
+
+  async getWorkshopParticipantCountsByType(
+    workshopType: WorkshopType
+  ): Promise<number> {
+    try {
+      const count = await prisma.rPKMworkshop.count({
+        where: {
+          workshopType: workshopType,
+        },
+      });
+      return count;
+    } catch (error) {
+      console.log(
+        `Error getting participant counts of RPKM workshops by type ${workshopType}: `,
+        error
+      );
+      throw new Error(
+        `Failed to get participant counts of RPKM workshops by type ${workshopType}.`
+      );
+    }
+  }
 }

src/usecase/rpkm/rpkmUsecase.ts

@@ -51,6 +51,28 @@ export class RpkmUsecase {
         );
       }
 
+      // max 100 participants per workshop time slot
+      const timeSlotParticipantCount =
+        await this.rpkmRepository.getWorkshopParticipantCountsByTypeAndTime(
+          body.workshopType,
+          body.workshopTime
+        );
+      if (timeSlotParticipantCount >= 100) {
+        throw new AppError(
+          `Workshop ${body.workshopType} at time slot ${body.workshopTime} is full.`,
+          400
+        );
+      }
+
+      // max 600 participants per workshop type
+      const workshopParticipantCount =
+        await this.rpkmRepository.getWorkshopParticipantCountsByType(
+          body.workshopType
+        );
+      if (workshopParticipantCount >= 600) {
+        throw new AppError(`Workshop ${body.workshopType} is full.`, 400);
+      }
+
       const registrationResult =
         await this.rpkmRepository.userRegisterNewWorkshop(body, userId);
       return registrationResult;