Disable autocomplete via WHOOGLE_AUTOCOMPLETE var

Setting WHOOGLE_AUTOCOMPLETE to 0 now disables the autocomplete/search
suggestion feature.

Closes #462

README.md

@@ -297,7 +297,7 @@ There are a few optional environment variables available for customizing a Whoog
 - With `docker build/run`: Add `--env-file ./whoogle.env` to your command
 
 | Variable             | Description                                                                               |
-| ------------------ | ----------------------------------------------------------------------------------------- |
+| -------------------- | ----------------------------------------------------------------------------------------- |
 | WHOOGLE_DOTENV       | Load environment variables in `whoogle.env`                                               |
 | WHOOGLE_USER         | The username for basic auth. WHOOGLE_PASS must also be set if used.                       |
 | WHOOGLE_PASS         | The password for basic auth. WHOOGLE_USER must also be set if used.                       |
@@ -312,6 +312,7 @@ There are a few optional environment variables available for customizing a Whoog
 | WHOOGLE_ALT_IG       | The instagram.com alternative to use when site alternatives are enabled in the config.    |
 | WHOOGLE_ALT_RD       | The reddit.com alternative to use when site alternatives are enabled in the config.       |
 | WHOOGLE_ALT_TL       | The Google Translate alternative to use. This is used for all "translate ____" searches.  |
+| WHOOGLE_AUTOCOMPLETE | Controls visibility of autocomplete/search suggestions. Default on -- use '0' to disable  |
 
 ### Config Environment Variables
 These environment variables allow setting default config values, but can be overwritten manually by using the home page config menu. These allow a shortcut for destroying/rebuilding an instance to the same config state every time.

app/models/config.py

@@ -1,15 +1,10 @@
+from app.utils.misc import read_config_bool
 from flask import current_app
 import os
 
 
 class Config:
     def __init__(self, **kwargs):
-        def read_config_bool(var: str) -> bool:
-            val = os.getenv(var, '0')
-            if val.isdigit():
-                return bool(int(val))
-            return False
-
         app_config = current_app.config
         self.url = os.getenv('WHOOGLE_CONFIG_URL', '')
         self.lang_search = os.getenv('WHOOGLE_CONFIG_SEARCH_LANGUAGE', '')

app/routes.py

@@ -16,6 +16,7 @@ from app import app
 from app.models.config import Config
 from app.request import Request, TorError
 from app.utils.bangs import resolve_bang
+from app.utils.misc import read_config_bool
 from app.utils.session import generate_user_key, valid_user_session
 from app.utils.search import *
 
@@ -178,6 +179,10 @@ def search_html():
 
 @app.route('/autocomplete', methods=['GET', 'POST'])
 def autocomplete():
+    ac_var = 'WHOOGLE_AUTOCOMPLETE'
+    if os.getenv(ac_var) and not read_config_bool(ac_var):
+        return jsonify({})
+
     q = g.request_params.get('q')
     if not q:
         # FF will occasionally (incorrectly) send the q field without a

app/utils/misc.py

@@ -8,3 +8,10 @@ def gen_file_hash(path: str, static_file: str) -> str:
     filename_split = os.path.splitext(static_file)
 
     return filename_split[0] + '.' + file_hash + filename_split[-1]
+
+
+def read_config_bool(var: str) -> bool:
+    val = os.getenv(var, '0')
+    if val.isdigit():
+        return bool(int(val))
+    return False