Rebuild and update project functionality

app/api/qwen/chat/route.ts

@@ -0,0 +1,70 @@
+import { NextRequest, NextResponse } from "next/server";
+import { createQwenHeaders } from "../constants";
+
+const DEFAULT_QWEN_ENDPOINT = "https://dashscope-intl.aliyuncs.com/compatible-mode/v1";
+
+function normalizeEndpoint(raw?: string | null): string {
+  const trimmed = (raw || "").trim();
+  if (!trimmed) {
+    return DEFAULT_QWEN_ENDPOINT;
+  }
+
+  if (trimmed.endsWith("/chat/completions")) {
+    return trimmed;
+  }
+
+  const cleaned = trimmed.replace(/\/$/, "");
+  return `${cleaned}/chat/completions`;
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const body = await request.json().catch(() => ({}));
+    const { endpoint, model, messages, stream } = body || {};
+    const authorization = request.headers.get("authorization") || body?.authorization;
+
+    if (!authorization) {
+      return NextResponse.json(
+        { error: "Authorization header required" },
+        { status: 401 }
+      );
+    }
+
+    const url = normalizeEndpoint(endpoint);
+    const response = await fetch(url, {
+      method: "POST",
+      headers: {
+        ...createQwenHeaders("application/json"),
+        Authorization: authorization,
+      },
+      body: JSON.stringify({
+        model,
+        messages,
+        stream,
+      }),
+    });
+
+    const payload = await response.text();
+    if (!response.ok) {
+      return NextResponse.json(
+        { error: payload || response.statusText || "Qwen chat failed" },
+        { status: response.status }
+      );
+    }
+
+    try {
+      const data = JSON.parse(payload);
+      return NextResponse.json(data, { status: response.status });
+    } catch {
+      return NextResponse.json(
+        { error: payload || "Unexpected response format" },
+        { status: 502 }
+      );
+    }
+  } catch (error) {
+    return NextResponse.json(
+      { error: "internal_server_error", message: error instanceof Error ? error.message : "Qwen chat failed" },
+      { status: 500 }
+    );
+  }
+}