harden business rules

core/racing/domain/value-objects/TrackName.ts

@@ -1,25 +1,36 @@
-import { RacingDomainValidationError } from '../errors/RacingDomainError';
-import type { IValueObject } from '@core/shared/domain';
+import { z } from "zod";
 
-export class TrackName implements IValueObject<string> {
-  private constructor(private readonly value: string) {}
+const TrackNameSchema = z
+  .string()
+  .trim()
+  .min(1, "Track name cannot be empty")
+  .max(100, "Track name must be 100 characters or less");
 
-  get props(): string {
-    return this.value;
+export class TrackName {
+  private readonly _value: string;
+
+  private constructor(value: string) {
+    this._value = value;
   }
 
   static create(value: string): TrackName {
-    if (!value || value.trim().length === 0) {
-      throw new RacingDomainValidationError('Track name is required');
-    }
-    return new TrackName(value.trim());
+    const validated = TrackNameSchema.parse(value);
+    return new TrackName(validated);
+  }
+
+  static fromString(value: string): TrackName {
+    return new TrackName(value);
+  }
+
+  get value(): string {
+    return this._value;
+  }
+
+  equals(other: TrackName): boolean {
+    return this._value === other._value;
   }
 
   toString(): string {
-    return this.value;
-  }
-
-  equals(other: IValueObject<string>): boolean {
-    return this.value === other.props;
+    return this._value;
   }
 }