[mod] searx.search.SearchQuery: remove categories parameter

The categories parameter is useless in the constructor:
it is always the categories from the EngineRef.

The categories becomes a property.

searx/search/__init__.py

@@ -69,22 +69,20 @@ class EngineRef:
 class SearchQuery:
     """container for all the search parameters (query, language, etc...)"""
 
-    __slots__ = 'query', 'engineref_list', 'categories', 'lang', 'safesearch', 'pageno', 'time_range',\
+    __slots__ = 'query', 'engineref_list', 'lang', 'safesearch', 'pageno', 'time_range',\
                 'timeout_limit', 'external_bang'
 
     def __init__(self,
                  query: str,
                  engineref_list: typing.List[EngineRef],
-                 categories: typing.List[str],
-                 lang: str,
-                 safesearch: int,
-                 pageno: int,
-                 time_range: typing.Optional[str],
+                 lang: str='all',
+                 safesearch: int=0,
+                 pageno: int=1,
+                 time_range: typing.Optional[str]=None,
                  timeout_limit: typing.Optional[float]=None,
                  external_bang: typing.Optional[str]=None):
         self.query = query
         self.engineref_list = engineref_list
-        self.categories = categories
         self.lang = lang
         self.safesearch = safesearch
         self.pageno = pageno
@@ -92,15 +90,18 @@ class SearchQuery:
         self.timeout_limit = timeout_limit
         self.external_bang = external_bang
 
+    @property
+    def categories(self):
+        return list(set(map(lambda engineref: engineref.category, self.engineref_list)))
+
     def __repr__(self):
-        return "SearchQuery({!r}, {!r}, {!r}, {!r}, {!r}, {!r}, {!r}, {!r}, {!r})".\
-               format(self.query, self.engineref_list, self.categories, self.lang, self.safesearch,
+        return "SearchQuery({!r}, {!r}, {!r}, {!r}, {!r}, {!r}, {!r}, {!r})".\
+               format(self.query, self.engineref_list, self.lang, self.safesearch,
                       self.pageno, self.time_range, self.timeout_limit, self.external_bang)
 
     def __eq__(self, other):
         return self.query == other.query\
             and self.engineref_list == other.engineref_list\
-            and self.categories == self.categories\
             and self.lang == other.lang\
             and self.safesearch == other.safesearch\
             and self.pageno == other.pageno\

searx/webadapter.py

@@ -117,8 +117,7 @@ def parse_specific(raw_text_query: RawTextQuery) -> Tuple[List[EngineRef], List[
             additional_categories.add('none')
         else:
             additional_categories.add(engineref.category)
-    query_categories = list(additional_categories)
-    return query_engineref_list, query_categories
+    return query_engineref_list
 
 
 def parse_category_form(query_categories: List[str], name: str, value: str) -> None:
@@ -171,8 +170,7 @@ def get_engineref_from_category_list(category_list: List[str], disabled_engines:
     return result
 
 
-def parse_generic(preferences: Preferences, form: Dict[str, str], disabled_engines: List[str])\
-        -> Tuple[List[EngineRef], List[str]]:
+def parse_generic(preferences: Preferences, form: Dict[str, str], disabled_engines: List[str]) -> List[EngineRef]:
     query_engineref_list = []
     query_categories = []
 
@@ -195,8 +193,6 @@ def parse_generic(preferences: Preferences, form: Dict[str, str], disabled_engin
         if query_categories:
             # add engines from referenced by the "categories" parameter and the "category_*"" parameters
             query_engineref_list.extend(get_engineref_from_category_list(query_categories, disabled_engines))
-        # get categories from the query_engineref_list
-        query_categories = list(set(engine.category for engine in query_engineref_list))
     else:
         # no "engines" parameters in the form
         if not query_categories:
@@ -208,7 +204,7 @@ def parse_generic(preferences: Preferences, form: Dict[str, str], disabled_engin
         # declared under the specific categories
         query_engineref_list.extend(get_engineref_from_category_list(query_categories, disabled_engines))
 
-    return query_engineref_list, query_categories
+    return query_engineref_list
 
 
 def get_search_query_from_webapp(preferences: Preferences, form: Dict[str, str])\
@@ -236,20 +232,18 @@ def get_search_query_from_webapp(preferences: Preferences, form: Dict[str, str])
     if not is_locked('categories') and raw_text_query.enginerefs and raw_text_query.specific:
         # if engines are calculated from query,
         # set categories by using that informations
-        query_engineref_list, query_categories = parse_specific(raw_text_query)
+        query_engineref_list = parse_specific(raw_text_query)
     else:
         # otherwise, using defined categories to
         # calculate which engines should be used
-        query_engineref_list, query_categories = parse_generic(preferences, form, disabled_engines)
+        query_engineref_list = parse_generic(preferences, form, disabled_engines)
 
     query_engineref_list = deduplicate_engineref_list(query_engineref_list)
     query_engineref_list, query_engineref_list_unknown, query_engineref_list_notoken =\
         validate_engineref_list(query_engineref_list, preferences)
 
-    return (SearchQuery(query, query_engineref_list, query_categories,
-                        query_lang, query_safesearch, query_pageno,
-                        query_time_range, query_timeout,
-                        external_bang=external_bang),
+    return (SearchQuery(query, query_engineref_list, query_lang, query_safesearch, query_pageno,
+                        query_time_range, query_timeout, external_bang=external_bang),
             raw_text_query,
             query_engineref_list_unknown,
             query_engineref_list_notoken)

tests/unit/test_search.py

@@ -23,13 +23,13 @@ TEST_ENGINES = [
 class SearchQueryTestCase(SearxTestCase):
 
     def test_repr(self):
-        s = SearchQuery('test', [EngineRef('bing', 'general', False)], ['general'], 'all', 0, 1, '1', 5.0, 'g')
+        s = SearchQuery('test', [EngineRef('bing', 'general', False)], 'all', 0, 1, '1', 5.0, 'g')
         self.assertEqual(repr(s),
-                         "SearchQuery('test', [EngineRef('bing', 'general', False)], ['general'], 'all', 0, 1, '1', 5.0, 'g')")  # noqa
+                         "SearchQuery('test', [EngineRef('bing', 'general', False)], 'all', 0, 1, '1', 5.0, 'g')")  # noqa
 
     def test_eq(self):
-        s = SearchQuery('test', [EngineRef('bing', 'general', False)], ['general'], 'all', 0, 1, None, None, None)
-        t = SearchQuery('test', [EngineRef('google', 'general', False)], ['general'], 'all', 0, 1, None, None, None)
+        s = SearchQuery('test', [EngineRef('bing', 'general', False)], 'all', 0, 1, None, None, None)
+        t = SearchQuery('test', [EngineRef('google', 'general', False)], 'all', 0, 1, None, None, None)
         self.assertEqual(s, s)
         self.assertNotEqual(s, t)
 
@@ -43,7 +43,7 @@ class SearchTestCase(SearxTestCase):
     def test_timeout_simple(self):
         searx.search.max_request_timeout = None
         search_query = SearchQuery('test', [EngineRef(PUBLIC_ENGINE_NAME, 'general')],
-                                   ['general'], 'en-US', SAFESEARCH, PAGENO, None, None)
+                                   'en-US', SAFESEARCH, PAGENO, None, None)
         search = searx.search.Search(search_query)
         search.search()
         self.assertEqual(search.actual_timeout, 3.0)
@@ -51,7 +51,7 @@ class SearchTestCase(SearxTestCase):
     def test_timeout_query_above_default_nomax(self):
         searx.search.max_request_timeout = None
         search_query = SearchQuery('test', [EngineRef(PUBLIC_ENGINE_NAME, 'general')],
-                                   ['general'], 'en-US', SAFESEARCH, PAGENO, None, 5.0)
+                                   'en-US', SAFESEARCH, PAGENO, None, 5.0)
         search = searx.search.Search(search_query)
         search.search()
         self.assertEqual(search.actual_timeout, 3.0)
@@ -59,7 +59,7 @@ class SearchTestCase(SearxTestCase):
     def test_timeout_query_below_default_nomax(self):
         searx.search.max_request_timeout = None
         search_query = SearchQuery('test', [EngineRef(PUBLIC_ENGINE_NAME, 'general')],
-                                   ['general'], 'en-US', SAFESEARCH, PAGENO, None, 1.0)
+                                   'en-US', SAFESEARCH, PAGENO, None, 1.0)
         search = searx.search.Search(search_query)
         search.search()
         self.assertEqual(search.actual_timeout, 1.0)
@@ -67,7 +67,7 @@ class SearchTestCase(SearxTestCase):
     def test_timeout_query_below_max(self):
         searx.search.max_request_timeout = 10.0
         search_query = SearchQuery('test', [EngineRef(PUBLIC_ENGINE_NAME, 'general')],
-                                   ['general'], 'en-US', SAFESEARCH, PAGENO, None, 5.0)
+                                   'en-US', SAFESEARCH, PAGENO, None, 5.0)
         search = searx.search.Search(search_query)
         search.search()
         self.assertEqual(search.actual_timeout, 5.0)
@@ -75,7 +75,7 @@ class SearchTestCase(SearxTestCase):
     def test_timeout_query_above_max(self):
         searx.search.max_request_timeout = 10.0
         search_query = SearchQuery('test', [EngineRef(PUBLIC_ENGINE_NAME, 'general')],
-                                   ['general'], 'en-US', SAFESEARCH, PAGENO, None, 15.0)
+                                   'en-US', SAFESEARCH, PAGENO, None, 15.0)
         search = searx.search.Search(search_query)
         search.search()
         self.assertEqual(search.actual_timeout, 10.0)
@@ -83,7 +83,7 @@ class SearchTestCase(SearxTestCase):
     def test_external_bang(self):
         search_query = SearchQuery('yes yes',
                                    [EngineRef(PUBLIC_ENGINE_NAME, 'general')],
-                                   ['general'], 'en-US', SAFESEARCH, PAGENO, None, None,
+                                   'en-US', SAFESEARCH, PAGENO, None, None,
                                    external_bang="yt")
         search = searx.search.Search(search_query)
         results = search.search()
@@ -92,7 +92,7 @@ class SearchTestCase(SearxTestCase):
 
         search_query = SearchQuery('youtube never gonna give you up',
                                    [EngineRef(PUBLIC_ENGINE_NAME, 'general')],
-                                   ['general'], 'en-US', SAFESEARCH, PAGENO, None, None)
+                                   'en-US', SAFESEARCH, PAGENO, None, None)
 
         search = searx.search.Search(search_query)
         results = search.search()

tests/unit/test_standalone_searx.py

@@ -102,7 +102,7 @@ class StandaloneSearx(SearxTestCase):
         search_q = sas.get_search_query(args)
         self.assertTrue(search_q)
         self.assertEqual(search_q, SearchQuery('rain', [EngineRef('engine1', 'general', False)],
-                         ['general'], 'all', 0, 1, None, None, None))
+                         'all', 0, 1, None, None, None))
 
     def test_no_parsed_url(self):
         """test no_parsed_url func"""