refator: google

app/api/google/[...path]/route.ts

@@ -1,7 +1,15 @@
 import { NextRequest, NextResponse } from "next/server";
 import { auth } from "../../auth";
 import { getServerSideConfig } from "@/app/config/server";
-import { GEMINI_BASE_URL, Google, ModelProvider } from "@/app/constant";
+import {
+  ApiPath,
+  GEMINI_BASE_URL,
+  Google,
+  ModelProvider,
+} from "@/app/constant";
+import { prettyObject } from "@/app/utils/format";
+
+const serverConfig = getServerSideConfig();
 
 async function handle(
   req: NextRequest,
@@ -13,32 +21,6 @@ async function handle(
     return NextResponse.json({ body: "OK" }, { status: 200 });
   }
 
-  const controller = new AbortController();
-
-  const serverConfig = getServerSideConfig();
-
-  let baseUrl = serverConfig.googleUrl || GEMINI_BASE_URL;
-
-  if (!baseUrl.startsWith("http")) {
-    baseUrl = `https://${baseUrl}`;
-  }
-
-  if (baseUrl.endsWith("/")) {
-    baseUrl = baseUrl.slice(0, -1);
-  }
-
-  let path = `${req.nextUrl.pathname}`.replaceAll("/api/google/", "");
-
-  console.log("[Proxy] ", path);
-  console.log("[Base Url]", baseUrl);
-
-  const timeoutId = setTimeout(
-    () => {
-      controller.abort();
-    },
-    10 * 60 * 1000,
-  );
-
   const authResult = auth(req, ModelProvider.GeminiPro);
   if (authResult.error) {
     return NextResponse.json(authResult, {
@@ -49,9 +31,9 @@ async function handle(
   const bearToken = req.headers.get("Authorization") ?? "";
   const token = bearToken.trim().replaceAll("Bearer ", "").trim();
 
-  const key = token ? token : serverConfig.googleApiKey;
+  const apiKey = token ? token : serverConfig.googleApiKey;
 
-  if (!key) {
+  if (!apiKey) {
     return NextResponse.json(
       {
         error: true,
@@ -62,10 +44,63 @@ async function handle(
       },
     );
   }
+  try {
+    const response = await request(req, apiKey);
+    return response;
+  } catch (e) {
+    console.error("[Google] ", e);
+    return NextResponse.json(prettyObject(e));
+  }
+}
 
-  const fetchUrl = `${baseUrl}/${path}?key=${key}${
+export const GET = handle;
-    req?.nextUrl?.searchParams?.get("alt") == "sse" ? "&alt=sse" : ""
+export const POST = handle;
+
+export const runtime = "edge";
+export const preferredRegion = [
+  "bom1",
+  "cle1",
+  "cpt1",
+  "gru1",
+  "hnd1",
+  "iad1",
+  "icn1",
+  "kix1",
+  "pdx1",
+  "sfo1",
+  "sin1",
+  "syd1",
+];
+
+async function request(req: NextRequest, apiKey: string) {
+  const controller = new AbortController();
+
+  let baseUrl = serverConfig.googleUrl || GEMINI_BASE_URL;
+
+  let path = `${req.nextUrl.pathname}`.replaceAll(ApiPath.Google, "");
+
+  if (!baseUrl.startsWith("http")) {
+    baseUrl = `https://${baseUrl}`;
+  }
+
+  if (baseUrl.endsWith("/")) {
+    baseUrl = baseUrl.slice(0, -1);
+  }
+
+  console.log("[Proxy] ", path);
+  console.log("[Base Url]", baseUrl);
+
+  const timeoutId = setTimeout(
+    () => {
+      controller.abort();
+    },
+    10 * 60 * 1000,
+  );
+  const fetchUrl = `${baseUrl}${path}?key=${apiKey}${
+    req?.nextUrl?.searchParams?.get("alt") === "sse" ? "&alt=sse" : ""
   }`;
+
+  console.log("[Fetch Url] ", fetchUrl);
   const fetchOptions: RequestInit = {
     headers: {
       "Content-Type": "application/json",
@@ -97,22 +132,3 @@ async function handle(
     clearTimeout(timeoutId);
   }
 }
-
-export const GET = handle;
-export const POST = handle;
-
-export const runtime = "edge";
-export const preferredRegion = [
-  "bom1",
-  "cle1",
-  "cpt1",
-  "gru1",
-  "hnd1",
-  "iad1",
-  "icn1",
-  "kix1",
-  "pdx1",
-  "sfo1",
-  "sin1",
-  "syd1",
-];

app/client/platforms/google.ts

@@ -1,4 +1,4 @@
-import { Google, REQUEST_TIMEOUT_MS } from "@/app/constant";
+import { ApiPath, Google, REQUEST_TIMEOUT_MS } from "@/app/constant";
 import { ChatOptions, getHeaders, LLMApi, LLMModel, LLMUsage } from "../api";
 import { useAccessStore, useAppConfig, useChatStore } from "@/app/store";
 import { getClientConfig } from "@/app/config/client";
@@ -16,6 +16,34 @@ import {
 } from "@/app/utils";
 
 export class GeminiProApi implements LLMApi {
+  path(path: string): string {
+    const accessStore = useAccessStore.getState();
+
+    let baseUrl = "";
+    if (accessStore.useCustomConfig) {
+      baseUrl = accessStore.googleUrl;
+    }
+
+    if (baseUrl.length === 0) {
+      const isApp = !!getClientConfig()?.isApp;
+      baseUrl = isApp
+        ? DEFAULT_API_HOST + `/api/proxy/google?key=${accessStore.googleApiKey}`
+        : ApiPath.Google;
+    }
+    if (baseUrl.endsWith("/")) {
+      baseUrl = baseUrl.slice(0, baseUrl.length - 1);
+    }
+    if (!baseUrl.startsWith("http") && !baseUrl.startsWith(ApiPath.Google)) {
+      baseUrl = "https://" + baseUrl;
+    }
+
+    console.log("[Proxy Endpoint] ", baseUrl, path);
+
+    let chatPath = [baseUrl, path].join("/");
+
+    chatPath += chatPath.includes("?") ? "&alt=sse" : "?alt=sse";
+    return chatPath;
+  }
   extractMessage(res: any) {
     console.log("[Response] gemini-pro response: ", res);
 
@@ -108,30 +136,13 @@ export class GeminiProApi implements LLMApi {
       ],
     };
 
-    const accessStore = useAccessStore.getState();
-
-    let baseUrl = "";
-
-    if (accessStore.useCustomConfig) {
-      baseUrl = accessStore.googleUrl;
-    }
-
-    const isApp = !!getClientConfig()?.isApp;
-
     let shouldStream = !!options.config.stream;
     const controller = new AbortController();
     options.onController?.(controller);
     try {
-      if (!baseUrl && isApp) {
+      // https://github.com/google-gemini/cookbook/blob/main/quickstarts/rest/Streaming_REST.ipynb
-        baseUrl = DEFAULT_API_HOST + "/api/proxy/google/";
+      const chatPath = this.path(Google.ChatPath(modelConfig.model));
-      }
+
-      baseUrl = `${baseUrl}/${Google.ChatPath(modelConfig.model)}`.replaceAll(
-        "//",
-        "/",
-      );
-      if (isApp) {
-        baseUrl += `?key=${accessStore.googleApiKey}`;
-      }
       const chatPayload = {
         method: "POST",
         body: JSON.stringify(requestPayload),
@@ -181,10 +192,6 @@ export class GeminiProApi implements LLMApi {
 
         controller.signal.onabort = finish;
 
-        // https://github.com/google-gemini/cookbook/blob/main/quickstarts/rest/Streaming_REST.ipynb
-        const chatPath =
-          baseUrl.replace("generateContent", "streamGenerateContent") +
-          (baseUrl.indexOf("?") > -1 ? "&alt=sse" : "?alt=sse");
         fetchEventSource(chatPath, {
           ...chatPayload,
           async onopen(res) {
@@ -259,7 +266,7 @@ export class GeminiProApi implements LLMApi {
           openWhenHidden: true,
         });
       } else {
-        const res = await fetch(baseUrl, chatPayload);
+        const res = await fetch(chatPath, chatPayload);
         clearTimeout(requestTimeoutId);
         const resJson = await res.json();
         if (resJson?.promptFeedback?.blockReason) {
@@ -285,14 +292,4 @@ export class GeminiProApi implements LLMApi {
   async models(): Promise<LLMModel[]> {
     return [];
   }
-  path(path: string): string {
-    return "/api/google/" + path;
-  }
-}
-
-function ensureProperEnding(str: string) {
-  if (str.startsWith("[") && !str.endsWith("]")) {
-    return str + "]";
-  }
-  return str;
 }

app/constant.ts

@@ -118,7 +118,8 @@ export const Azure = {
 
 export const Google = {
   ExampleEndpoint: "https://generativelanguage.googleapis.com/",
-  ChatPath: (modelName: string) => `v1beta/models/${modelName}:generateContent`,
+  ChatPath: (modelName: string) =>
+    `v1beta/models/${modelName}:streamGenerateContent`,
 };
 
 export const Baidu = {