[feat] engine: implementation of LibreTranslate

Co-authored-by: Markus Heiser <markus.heiser@darmarit.de>

searx/engines/libretranslate.py

@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: AGPL-3.0-or-later
+"""LibreTranslate (Free and Open Source Machine Translation API)"""
+
+import random
+from json import dumps
+
+about = {
+    "website": 'https://libretranslate.com',
+    "wikidata_id": None,
+    "official_api_documentation": 'https://libretranslate.com/docs/',
+    "use_official_api": True,
+    "require_api_key": False,
+    "results": 'JSON',
+}
+
+engine_type = 'online_dictionary'
+categories = ['general', 'translate']
+
+base_url = "https://translate.terraprint.co"
+api_key = ''
+
+
+def request(_query, params):
+    request_url = random.choice(base_url) if isinstance(base_url, list) else base_url
+    params['url'] = f"{request_url}/translate"
+
+    args = {'source': params['from_lang'][1], 'target': params['to_lang'][1], 'q': params['query']}
+    if api_key:
+        args['api_key'] = api_key
+    params['data'] = dumps(args)
+
+    params['method'] = 'POST'
+    params['headers'] = {'Content-Type': 'application/json'}
+
+    return params
+
+
+def response(resp):
+    results = []
+
+    json_resp = resp.json()
+    text = json_resp.get('translatedText')
+    if text:
+        results.append({'answer': text})
+
+    return results

searx/settings.yml

@@ -1060,6 +1060,16 @@ engines:
     shortcut: loc
     categories: images
 
+  - name: libretranslate
+    engine: libretranslate
+    # https://github.com/LibreTranslate/LibreTranslate?tab=readme-ov-file#mirrors
+    base_url:
+      - https://translate.terraprint.co
+      - https://trans.zillyhuhn.com
+    # api_key: abc123
+    shortcut: lt
+    disabled: true
+
   - name: lingva
     engine: lingva
     shortcut: lv