Fix users being able to claim a card twice if the user has multiple of it already

src/database/entities/app/Claim.ts

@@ -0,0 +1,27 @@
+import { Column, Entity, ManyToOne } from "typeorm";
+import AppBaseEntity from "../../../contracts/AppBaseEntity";
+import Inventory from "./Inventory";
+import AppDataSource from "../../dataSources/appDataSource";
+
+@Entity()
+export default class Claim extends AppBaseEntity {
+    constructor(claimId: string) {
+        super();
+
+        this.ClaimId = claimId;
+    }
+
+    @Column()
+    ClaimId: string;
+
+    @ManyToOne(() => Inventory, x => x.Claims)
+    Inventory: Inventory;
+
+    public static async FetchOneByClaimId(claimId: string): Promise<Claim | null> {
+        const repository = AppDataSource.getRepository(Claim);
+
+        const single = await repository.findOne({ where: { ClaimId: claimId }});
+
+        return single;
+    }
+}

src/database/entities/app/Inventory.ts

@@ -1,16 +1,16 @@
-import { Column, Entity } from "typeorm";
+import { Column, Entity, OneToMany } from "typeorm";
 import AppBaseEntity from "../../../contracts/AppBaseEntity";
 import AppDataSource from "../../dataSources/appDataSource";
+import Claim from "./Claim";
 
 @Entity()
 export default class Inventory extends AppBaseEntity {
-    constructor(userId: string, cardNumber: string, quantity: number, claimId: string) {
+    constructor(userId: string, cardNumber: string, quantity: number) {
         super();
 
         this.UserId = userId;
         this.CardNumber = cardNumber;
         this.Quantity = quantity;
-        this.ClaimId = claimId;
     }
 
     @Column()
@@ -22,13 +22,17 @@ export default class Inventory extends AppBaseEntity {
     @Column()
     Quantity: number;
 
-    @Column()
-    ClaimId: string;
+    @OneToMany(() => Claim, x => x.Inventory)
+    Claims: Claim[];
 
     public SetQuantity(quantity: number) {
         this.Quantity = quantity;
     }
 
+    public AddClaim(claim: Claim) {
+        this.Claims.push(claim);
+    }
+
     public static async FetchOneByCardNumberAndUserId(userId: string, cardNumber: string): Promise<Inventory | null> {
         const repository = AppDataSource.getRepository(Inventory);
 
@@ -36,12 +40,4 @@ export default class Inventory extends AppBaseEntity {
 
         return single;
     }
-
-    public static async FetchOneByClaimId(claimId: string): Promise<Inventory | null> {
-        const repository = AppDataSource.getRepository(Inventory);
-
-        const single = await repository.findOne({ where: { ClaimId: claimId }});
-
-        return single;
-    }
 }