From b8f9ee1fb7d7eea17bc81fa5bfeea0d37d23d21b Mon Sep 17 00:00:00 2001
From: xxnuo <54252779+xxnuo@users.noreply.github.com>
Date: Sat, 10 Jan 2026 17:00:40 +0800
Subject: [PATCH] Create deeplx.controller.ts

---
 src/controllers/plugins/deeplx.controller.ts | 74 ++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 src/controllers/plugins/deeplx.controller.ts

diff --git a/src/controllers/plugins/deeplx.controller.ts b/src/controllers/plugins/deeplx.controller.ts
new file mode 100644
index 0000000..fc5ad39
--- /dev/null
+++ b/src/controllers/plugins/deeplx.controller.ts
@@ -0,0 +1,74 @@
+import { Controller, Post, Body, Route, Tags, SuccessResponse, Header, Query } from 'tsoa';
+
+interface DeeplxTranslateRequest {
+  text: string;
+  source_lang: string;
+  target_lang: string;
+}
+
+interface DeeplxTranslateResponse {
+  alternatives: string[];
+  code: number;
+  data: string;
+  id: number;
+  method: string;
+  source_lang: string;
+  target_lang: string;
+}
+
+@Route('deeplx')
+@Tags('Compatible APIs')
+export class DeeplxController extends Controller {
+  @Post('/')
+  @SuccessResponse('200', 'Success')
+  public async translate(
+    @Body() body: DeeplxTranslateRequest,
+    @Header('Authorization') authorization?: string,
+    @Query('token') tokenQuery?: string
+  ): Promise<DeeplxTranslateResponse> {
+    const { NormalizeLanguageCode } = await import('@/utils/index.js');
+    const { translateWithPivot } = await import('@/services/index.js');
+    const { getConfig } = await import('@/config/index.js');
+
+    const config = getConfig();
+    const apiToken = config.apiToken;
+
+    if (apiToken) {
+      let token = '';
+      if (authorization) {
+        if (authorization.startsWith('Bearer ')) {
+          token = authorization.replace('Bearer ', '');
+        } else {
+           token = authorization;
+        }
+      } else if (tokenQuery) {
+        token = tokenQuery;
+      }
+
+      if (token !== apiToken) {
+        this.setStatus(401);
+        throw new Error('Unauthorized');
+      }
+    }
+
+    const sourceLang = body.source_lang ? NormalizeLanguageCode(body.source_lang) : 'auto';
+    const targetLang = NormalizeLanguageCode(body.target_lang);
+
+    const text = body.text;
+
+    // Use pivot translation. Assuming plain text for simplicity as per DeepLX usual usage.
+    const result = await translateWithPivot(sourceLang, targetLang, text, false);
+
+    const id = Math.floor(Math.random() * 10000000000);
+
+    return {
+      alternatives: [],
+      code: 200,
+      data: result,
+      id: id,
+      method: 'Free',
+      source_lang: sourceLang.toUpperCase(),
+      target_lang: targetLang.toUpperCase()
+    };
+  }
+}