refactor: update code gen strategy (branch user)

src/controllers/branch-user-controller.ts

@@ -1,4 +1,4 @@
-import { Prisma, Status, UserType } from "@prisma/client";
+import { Branch, Prisma, Status, User, UserType } from "@prisma/client";
 import {
   Body,
   Controller,
@@ -20,6 +20,37 @@ import { RequestWithUser } from "../interfaces/user";
 
 type BranchUserBody = { user: string[] };
 
+async function userBranchCodeGen(branch: Branch, user: User[]) {
+  await prisma.$transaction(
+    async (tx) => {
+      for (const usr of user) {
+        if (usr.code !== null) continue;
+
+        const typ = usr.userType;
+
+        const last = await tx.runningNo.upsert({
+          where: {
+            key: `BR_USR_${branch.code.slice(4).padEnd(3, "0")}${typ !== "USER" ? typ.charAt(0) : ""}`,
+          },
+          create: {
+            key: `BR_USR_${branch.code.slice(4).padEnd(3, "0")}${typ !== "USER" ? typ.charAt(0) : ""}`,
+            value: 1,
+          },
+          update: { value: { increment: 1 } },
+        });
+
+        await prisma.user.update({
+          where: { id: usr.id },
+          data: {
+            code: `${last.key.slice(7)}${last.value.toString().padStart(4, "0")}`,
+          },
+        });
+      }
+    },
+    { isolationLevel: Prisma.TransactionIsolationLevel.Serializable },
+  );
+}
+
 @Route("api/branch/{branchId}/user")
 @Tags("Branch User")
 @Security("keycloak")
@@ -114,42 +145,7 @@ export class BranchUserController extends Controller {
       }),
     ]);
 
-    const group: Record<UserType, string[]> = {
-      USER: [],
-      AGENCY: [],
-      DELEGATE: [],
-      MESSENGER: [],
-    };
-
-    for (const u of user) group[u.userType].push(u.id);
-
-    for (const g of Object.values(UserType)) {
-      if (group[g].length === 0) continue;
-
-      const last = await prisma.branchUser.findFirst({
-        orderBy: { createdAt: "desc" },
-        include: { user: true },
-        where: {
-          branchId,
-          user: {
-            userType: g,
-            code: { startsWith: `${branch.code.slice(4).padEnd(3, "0")}` },
-          },
-        },
-      });
-
-      const code = (idx: number) =>
-        `${branch.code.slice(4).padEnd(3, "0")}${g !== "USER" ? g.charAt(0) : ""}${(+(last?.user.code?.slice(-4) || 0) + idx + 1).toString().padStart(4, "0")}`;
-
-      await prisma.$transaction(
-        group[g].map((v, i) =>
-          prisma.user.updateMany({
-            where: { id: v, code: null },
-            data: { code: code(i) },
-          }),
-        ),
-      );
-    }
+    await userBranchCodeGen(branch, user);
   }
 
   @Delete()