update

src/common/decorators/tokenInfo.decorator.ts

@@ -13,12 +13,10 @@ export const TokenAccount = createParamDecorator(
       const request = ctx.switchToHttp().getRequest<Request>()
       const account = request.decodedToken
 
-      // ✅ if middleware didn't populate req.account, return undefined or throw
       if (!account || !account.user?.id) {
         throw new UnauthorizedException('شما به این بخش دسترسی ندارید')
       }
 
-      // ✅ if decorator called with a key (e.g. @account('accountId'))
       if (data) {
         if (data === 'userId') {
           return account.user?.id
@@ -26,7 +24,6 @@ export const TokenAccount = createParamDecorator(
         return account[data]
       }
 
-      // ✅ if called with no param — return full account object
       return account
     } catch (err) {
       throw new BadRequestException('مشکلی در ساختار درخواست شما وجود دارد.')

src/common/utils/tracking-code-generator.util.ts

@@ -0,0 +1,35 @@
+import { randomBytes } from 'crypto'
+
+export function generateTrackingCode(prefix: string, suffixLength: number) {
+  const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
+  const bytes = randomBytes(suffixLength)
+
+  let suffix = ''
+  for (let i = 0; i < suffixLength; i++) {
+    suffix += chars[bytes[i] % chars.length]
+  }
+
+  return `${prefix}-${suffix}`
+}
+
+export function isTrackingCodeUniqueViolation(error: unknown) {
+  const prismaError = error as {
+    code?: string
+    meta?: { target?: string[] | string }
+  }
+
+  if (prismaError?.code !== 'P2002') {
+    return false
+  }
+
+  const target = prismaError.meta?.target
+  if (Array.isArray(target)) {
+    return target.includes('tracking_code')
+  }
+
+  if (typeof target === 'string') {
+    return target.includes('tracking_code')
+  }
+
+  return true
+}