fix: honor registered DeepSeek endpoint

server-tools/bingshuo-tcs-controller/model-client.mjs

@@ -1,5 +1,11 @@
 const DEFAULT_TIMEOUT_MS = 45_000;
 
+function completionEndpoint(apiUrl) {
+  const value = String(apiUrl || "").replace(/\/+$/, "");
+  if (/\/chat\/completions$/i.test(value)) return value;
+  return `${value}/chat/completions`;
+}
+
 function extractJson(text) {
   const value = String(text || "").trim();
   if (!value) throw new Error("model_response_empty");
@@ -36,7 +42,7 @@ export class DeepSeekJsonClient {
     const controller = new AbortController();
     const timer = setTimeout(() => controller.abort(), this.timeoutMs);
     try {
-      const response = await this.fetchImpl(`${this.apiUrl}/chat/completions`, {
+      const response = await this.fetchImpl(completionEndpoint(this.apiUrl), {
         method: "POST",
         headers: {
           authorization: `Bearer ${this.apiKey}`,
@@ -78,4 +84,4 @@ export class DeepSeekJsonClient {
   }
 }
 
-export { extractJson };
+export { completionEndpoint, extractJson };

server-tools/bingshuo-tcs-controller/model-client.test.mjs

@@ -1,12 +1,27 @@
 import assert from "node:assert/strict";
 import test from "node:test";
-import { DeepSeekJsonClient, extractJson } from "./model-client.mjs";
+import {
+  DeepSeekJsonClient,
+  completionEndpoint,
+  extractJson,
+} from "./model-client.mjs";
 
 test("extractJson accepts strict JSON and fenced JSON", () => {
   assert.deepEqual(extractJson('{"ok":true}'), { ok: true });
   assert.deepEqual(extractJson('```json\n{"ok":true}\n```'), { ok: true });
 });
 
+test("completionEndpoint accepts either a base URL or a complete registered endpoint", () => {
+  assert.equal(
+    completionEndpoint("https://api.deepseek.com/v1"),
+    "https://api.deepseek.com/v1/chat/completions",
+  );
+  assert.equal(
+    completionEndpoint("https://api.deepseek.com/chat/completions"),
+    "https://api.deepseek.com/chat/completions",
+  );
+});
+
 test("DeepSeek client sends the secret only as authorization and returns JSON", async () => {
   let observed;
   const client = new DeepSeekJsonClient({