From a17a73af71931916cd52d44020de99ba86a8210f Mon Sep 17 00:00:00 2001
From: lekss361 <alexey.kondratev@balance-pl.ru>
Date: Thu, 21 May 2026 01:13:46 +0300
Subject: [PATCH] =?UTF-8?q?fix(tradein):=20=D0=BF=D1=80=D0=B5=D1=84=D0=B8?=
 =?UTF-8?q?=D0=BA=D1=81=D0=B8=D1=82=D1=8C=20API=5FBASE=5FURL=20=D1=87?=
 =?UTF-8?q?=D0=B5=D1=80=D0=B5=D0=B7=20basePath?=
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Без префикса /trade-in клиентский fetch шёл на gendsgn.ru/api/v1/...
который Caddy маршрутизировал в main gendesign backend (не tradein).
Теперь NEXT_PUBLIC_API_BASE_URL fallback на NEXT_PUBLIC_BASE_PATH —
build с BASE_PATH=/trade-in корректно префиксит запросы.
---
 tradein-mvp/frontend/src/lib/api.ts | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/tradein-mvp/frontend/src/lib/api.ts b/tradein-mvp/frontend/src/lib/api.ts
index beb34d43..89793996 100644
--- a/tradein-mvp/frontend/src/lib/api.ts
+++ b/tradein-mvp/frontend/src/lib/api.ts
@@ -1,8 +1,11 @@
 import { getOrCreateSessionId } from "@/lib/sessionId";
 
-// Empty default = same-origin relative URLs.
-// In prod Caddy proxies /api/* to backend; in dev Next.js rewrites do the same.
-export const API_BASE_URL = process.env.NEXT_PUBLIC_API_BASE_URL ?? "";
+// При basePath=/trade-in (production behind gendsgn.ru/trade-in/*) API calls
+// должны идти на `/trade-in/api/...`, чтобы Caddy `handle_path /trade-in/api/*`
+// проксировал на tradein-backend — а не в main `handle /api/*` (gendesign).
+// В dev (без basePath) — empty prefix, Next.js rewrites относительный путь.
+const BASE_PATH = process.env.NEXT_PUBLIC_BASE_PATH ?? "";
+export const API_BASE_URL = process.env.NEXT_PUBLIC_API_BASE_URL ?? BASE_PATH;
 
 /**
  * Merges a global X-Session-Id header into the request init.