[mod] engines: remove stract engine (#5800)

Engine probably dead, developer doesn't have time to maintain it anymore:

- https://github.com/StractOrg/stract/issues/267

Related:

- https://github.com/searxng/searxng/pull/3099

docs/admin/settings/settings_search.rst

@@ -47,7 +47,6 @@
   - ``seznam``
   - ``sogou``
   - ``startpage``
-  - ``stract``
   - ``swisscows``
   - ``wikipedia``
   - ``yandex``

docs/dev/search_api.rst

@@ -87,7 +87,7 @@ Parameters
 
 ``autocomplete`` : default from :ref:`settings search`
   [ ``google``, ``dbpedia``, ``duckduckgo``, ``mwmbl``, ``startpage``,
-  ``wikipedia``, ``stract``, ``swisscows``, ``qwant`` ]
+  ``wikipedia``, ``swisscows``, ``qwant`` ]
 
   Service which completes words as you type.
 

searx/autocomplete.py

@@ -3,9 +3,8 @@
 # pylint: disable=use-dict-literal
 
 import json
-import html
 import typing as t
-from urllib.parse import urlencode, quote_plus
+from urllib.parse import urlencode
 
 import lxml.etree
 import lxml.html
@@ -16,7 +15,7 @@ from searx.engines import (
     engines,
     google,
 )
-from searx.network import get as http_get, post as http_post  # pyright: ignore[reportUnknownVariableType]
+from searx.network import get as http_get, post as http_post
 from searx.exceptions import SearxEngineResponseException
 from searx.utils import extr, gen_useragent
 
@@ -268,18 +267,6 @@ def startpage(query: str, sxng_locale: str) -> list[str]:
     return results
 
 
-def stract(query: str, _sxng_locale: str) -> list[str]:
-    # stract autocompleter (beta)
-    url = f"https://stract.com/beta/api/autosuggest?q={quote_plus(query)}"
-    resp = post(url)
-    results: list[str] = []
-
-    if resp.ok:
-        results = [html.unescape(suggestion['raw']) for suggestion in resp.json()]
-
-    return results
-
-
 def swisscows(query: str, _sxng_locale: str) -> list[str]:
     # swisscows autocompleter
     url = 'https://swisscows.ch/api/suggest?{query}&itemsCount=5'
@@ -355,7 +342,6 @@ backends: dict[str, t.Callable[[str, str], list[str]]] = {
     'seznam': seznam,
     'sogou': sogou,
     'startpage': startpage,
-    'stract': stract,
     'swisscows': swisscows,
     'wikipedia': wikipedia,
     'yandex': yandex,

searx/engines/stract.py

@@ -1,79 +0,0 @@
-# SPDX-License-Identifier: AGPL-3.0-or-later
-"""Stract is an independent open source search engine.  At this state, it's
-still in beta and hence this implementation will need to be updated once beta
-ends.
-
-"""
-
-from json import dumps
-from searx.utils import searxng_useragent
-from searx.enginelib.traits import EngineTraits
-
-about = {
-    "website": "https://stract.com/",
-    "use_official_api": True,
-    "official_api_documentation": "https://stract.com/beta/api/docs/#/search/api",
-    "require_api_key": False,
-    "results": "JSON",
-}
-categories = ['general']
-paging = True
-
-base_url = "https://stract.com/beta/api"
-search_url = base_url + "/search"
-
-
-def request(query, params):
-    params['url'] = search_url
-    params['method'] = "POST"
-    params['headers'] = {
-        'Accept': 'application/json',
-        'Content-Type': 'application/json',
-        'User-Agent': searxng_useragent(),
-    }
-    region = traits.get_region(params["searxng_locale"], default=traits.all_locale)
-    params['data'] = dumps(
-        {
-            'query': query,
-            'page': params['pageno'] - 1,
-            'selectedRegion': region,
-        }
-    )
-
-    return params
-
-
-def response(resp):
-    results = []
-
-    for result in resp.json()["webpages"]:
-        results.append(
-            {
-                'url': result['url'],
-                'title': result['title'],
-                'content': ''.join(fragment['text'] for fragment in result['snippet']['text']['fragments']),
-            }
-        )
-
-    return results
-
-
-def fetch_traits(engine_traits: EngineTraits):
-    # pylint: disable=import-outside-toplevel
-    from searx import network
-    from babel import Locale, languages
-    from searx.locales import region_tag
-
-    territories = Locale("en").territories
-
-    json = network.get(base_url + "/docs/openapi.json").json()
-    regions = json['components']['schemas']['Region']['enum']
-
-    engine_traits.all_locale = regions[0]
-
-    for region in regions[1:]:
-        for code, name in territories.items():
-            if region not in (code, name):
-                continue
-            for lang in languages.get_official_languages(code, de_facto=True):
-                engine_traits.regions[region_tag(Locale(lang, code))] = region

searx/settings.yml

@@ -33,7 +33,7 @@ search:
   # Filter results. 0: None, 1: Moderate, 2: Strict
   safe_search: 0
   # Existing autocomplete backends: "360search", "baidu", "brave", "dbpedia", "duckduckgo", "google", "yandex",
-  # "mwmbl", "naver", "seznam", "sogou", "startpage", "stract", "swisscows", "quark", "qwant", "wikipedia" -
+  # "mwmbl", "naver", "seznam", "sogou", "startpage", "swisscows", "quark", "qwant", "wikipedia" -
   # leave blank to turn it off by default.
   autocomplete: ""
   # minimun characters to type before autocompleter starts
@@ -2498,11 +2498,6 @@ engines:
       results: HTML
       language: de
 
-  - name: stract
-    engine: stract
-    shortcut: str
-    disabled: true
-
   - name: svgrepo
     engine: svgrepo
     shortcut: svg