fix: prefer primary Tenant.domain in get_user/get_version matching

When multiple tenants claim the same host via domains aliases, resolve the tenant whose primary domain matches first so branding edits apply to the expected version.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/get-user/get-user.service.ts

@@ -17,7 +17,7 @@ export class GetUserService {
       where: { isActive: true },
     });
 
-    const tenant = tenants.find((item) => this.matchesHost(item, host));
+    const tenant = this.findTenantForHost(tenants, host);
     if (!tenant) {
       throw new NotFoundException('tenant not found for domain');
     }
@@ -181,6 +181,46 @@ export class GetUserService {
     return out;
   }
 
+  /**
+   * اول دامنهٔ اصلی (Tenant.domain)، بعد aliases داخل domains[].
+   * اگر چند نسخه یک دامنه را داشته باشند، نسخهٔ primary برنده است.
+   */
+  private findTenantForHost<
+    T extends {
+      domain: string;
+      domains: unknown;
+    },
+  >(tenants: T[], host: string): T | undefined {
+    const normalizedHost = this.normalizeHost(host);
+    const hostNoWww = normalizedHost.replace(/^www\./, '');
+
+    const primary = tenants.find((item) => {
+      const d = this.normalizeHost(item.domain);
+      return d === normalizedHost || d.replace(/^www\./, '') === hostNoWww;
+    });
+    if (primary) return primary;
+
+    return tenants.find((item) => this.matchesAliasHost(item, normalizedHost));
+  }
+
+  private matchesAliasHost(
+    tenant: {
+      domain: string;
+      domains: unknown;
+    },
+    host: string,
+  ) {
+    const hostNoWww = host.replace(/^www\./, '');
+    for (const value of this.readDomains(tenant.domains)) {
+      const normalized = this.normalizeHost(value);
+      if (!normalized) continue;
+      if (normalized === host || normalized.replace(/^www\./, '') === hostNoWww) {
+        return true;
+      }
+    }
+    return false;
+  }
+
   private matchesHost(
     tenant: {
       domain: string;
@@ -188,15 +228,7 @@ export class GetUserService {
     },
     host: string,
   ) {
-    const candidates = new Set<string>();
-    for (const value of [tenant.domain, ...this.readDomains(tenant.domains)]) {
-      const normalized = this.normalizeHost(value);
-      if (!normalized) continue;
-      candidates.add(normalized);
-      candidates.add(normalized.replace(/^www\./, ''));
-      candidates.add(`www.${normalized.replace(/^www\./, '')}`);
-    }
-    return candidates.has(host) || candidates.has(host.replace(/^www\./, ''));
+    return Boolean(this.findTenantForHost([tenant], host));
   }
 
   private readDomains(raw: unknown): string[] {