[enh] archive.today option for results page (#3308)

Adds an option to the oscar theme that puts an archive.today link next to the web.archive.org cache link. In preferences change 'Show archive.today links' to 'On'

searx/preferences.py

@@ -354,6 +354,16 @@ class Preferences:
                     'True': True
                 }
             ),
+            'archive_today': MapSetting(
+                settings['ui'].get('archive_today', True),
+                is_locked('archive_today'),
+                map={
+                    '0': False,
+                    '1': True,
+                    'False': False,
+                    'True': True
+                }
+            ),
             'image_proxy': MapSetting(
                 settings['server'].get('image_proxy', False),
                 is_locked('image_proxy'),

searx/settings.yml

@@ -38,6 +38,7 @@ server:
 
 ui:
     autofocus : True # Autofocus search input
+    archive_today : False # show archive.today links
     static_path : "" # Custom static path - leave it blank if you didn't change
     templates_path : "" # Custom templates path - leave it blank if you didn't change
     default_theme : oscar # ui theme

searx/templates/oscar/macros.html

@@ -36,6 +36,9 @@
             <small>{{ result_link(result.cached_url, icon('link') + _('cached'), "text-info", id) }}</small>
             {%- elif not result.is_onion -%}
             <small>{{ result_link("https://web.archive.org/web/" + result.url, icon('link') + _('cached'), "text-info", id) }}</small>
+	        {% if archive_today %}
+	    <small>{{ result_link("https://archive.today/" + result.url, icon('link') + _('archive'), "text-info", id) }}</small>
+                {% endif %}
             {%- endif -%}
         {%- endif -%}
         {%- if proxify -%}
@@ -72,6 +75,9 @@
         <small>{{ result_link(result.cached_url, icon('link') + _('cached'), "text-info", id) }}</small>
         {%- elif not result.is_onion -%}
         <small>{{ result_link("https://web.archive.org/web/" + result.url, icon('link') + _('cached'), "text-info", id) }}</small>
+	    {% if archive_today %}
+	<small>{{ result_link("https://archive.today/" + result.url, icon('link') + _('archive'), "text-info", id) }}</small>
+	    {% endif %}
         {%- endif -%}
     {%- endif -%}
     {%- if proxify -%}

searx/templates/oscar/preferences.html

@@ -161,6 +161,17 @@
                     {{ preferences_item_footer(info, label, rtl) }}
                     {% endif %}
 
+                    {% if 'archive_today' not in locked_preferences %}
+                    {% set label = _('Show archive.today links') %}
+                    {% set info = _('Alternative link cache service') %}
+                    {{ preferences_item_header(info, label, rtl, 'archive_today') }}
+                        <select class="form-control {{ custom_select_class(rtl) }}" name="archive_today" id="archive_today">
+                            <option value="1" {% if archive_today %}selected="selected"{% endif %}>{{ _('On') }}</option>
+                            <option value="0" {% if not archive_today %}selected="selected"{% endif %}>{{ _('Off')}}</option>
+                        </select>
+                    {{ preferences_item_footer(info, label, rtl) }}
+                    {% endif %}
+
                     {% set label = _('Show advanced settings') %}
                     {% set info = _('Show advanced settings panel in the home page by default') %}
                     {{ preferences_item_header(info, label, rtl, 'advanced_search') }}

searx/webapp.py

@@ -389,6 +389,8 @@ def render(template_name, override_theme=None, **kwargs):
 
     kwargs['autofocus'] = request.preferences.get_value('autofocus')
 
+    kwargs['archive_today'] = request.preferences.get_value('archive_today')
+
     kwargs['safesearch'] = str(request.preferences.get_value('safesearch'))
 
     kwargs['language_codes'] = languages