feat: Support timezone and language query params

Support setting the timezone as well as the language via query params:
The timezone parameter previously only worked on certain pages.
While we're at it, let's also add the language as a param.
Refactor code for timezone and language functions.
Remove unused AURTZ cookie.

Signed-off-by: moson <moson@archlinux.org>

aurweb/l10n.py

@@ -64,11 +64,24 @@ class Translator:
 translator = Translator()
 
 
-def get_request_language(request: Request):
-    if request.user.is_authenticated():
+def get_request_language(request: Request) -> str:
+    """Get a request's language from either query param, user setting or
+    cookie. We use the configuration's [options] default_lang otherwise.
+
+    @param request FastAPI request
+    """
+    request_lang = request.query_params.get("language")
+    cookie_lang = request.cookies.get("AURLANG")
+    if request_lang and request_lang in SUPPORTED_LANGUAGES:
+        return request_lang
+    elif (
+        request.user.is_authenticated()
+        and request.user.LangPreference in SUPPORTED_LANGUAGES
+    ):
         return request.user.LangPreference
-    default_lang = aurweb.config.get("options", "default_lang")
-    return request.cookies.get("AURLANG", default_lang)
+    elif cookie_lang and cookie_lang in SUPPORTED_LANGUAGES:
+        return cookie_lang
+    return aurweb.config.get_with_fallback("options", "default_lang", "en")
 
 
 def get_raw_translator_for_request(request: Request):

aurweb/templates.py

@@ -3,7 +3,6 @@ import functools
 import os
 from http import HTTPStatus
 from typing import Callable
-from zoneinfo import ZoneInfoNotFoundError
 
 import jinja2
 from fastapi import Request
@@ -75,10 +74,7 @@ def make_context(request: Request, title: str, next: str = None):
         # Shorten commit_hash to a short Git hash.
         commit_hash = commit_hash[:7]
 
-    try:
-        timezone = time.get_request_timezone(request)
-    except ZoneInfoNotFoundError:
-        timezone = DEFAULT_TIMEZONE
+    timezone = time.get_request_timezone(request)
     language = l10n.get_request_language(request)
     return {
         "request": request,
@@ -110,9 +106,7 @@ async def make_variable_context(request: Request, title: str, next: str = None):
     )
 
     for k, v in to_copy.items():
-        if k == "timezone":
-            context[k] = v if v in time.SUPPORTED_TIMEZONES else DEFAULT_TIMEZONE
-        elif k not in context:
+        if k not in context:
             context[k] = v
     context["q"] = dict(request.query_params)
 

aurweb/time.py

@@ -1,7 +1,6 @@
 import zoneinfo
 from collections import OrderedDict
 from datetime import datetime
-from urllib.parse import unquote
 from zoneinfo import ZoneInfo
 
 from fastapi import Request
@@ -58,16 +57,20 @@ SUPPORTED_TIMEZONES = OrderedDict(
 )
 
 
-def get_request_timezone(request: Request):
-    """Get a request's timezone by its AURTZ cookie. We use the
-    configuration's [options] default_timezone otherwise.
+def get_request_timezone(request: Request) -> str:
+    """Get a request's timezone from either query param or user settings.
+    We use the configuration's [options] default_timezone otherwise.
 
     @param request FastAPI request
     """
-    default_tz = aurweb.config.get("options", "default_timezone")
-    if request.user.is_authenticated():
-        default_tz = request.user.Timezone
-    return unquote(request.cookies.get("AURTZ", default_tz))
+    request_tz = request.query_params.get("timezone")
+    if request_tz and request_tz in SUPPORTED_TIMEZONES:
+        return request_tz
+    elif (
+        request.user.is_authenticated() and request.user.Timezone in SUPPORTED_TIMEZONES
+    ):
+        return request.user.Timezone
+    return aurweb.config.get_with_fallback("options", "default_timezone", "UTC")
 
 
 def now(timezone: str) -> datetime:

test/test_l10n.py

@@ -1,5 +1,5 @@
 """ Test our l10n module. """
-from aurweb import filters, l10n
+from aurweb import config, filters, l10n
 from aurweb.testing.requests import Request
 
 
@@ -10,13 +10,55 @@ def test_translator():
 
 
 def test_get_request_language():
-    """First, tests default_lang, then tests a modified AURLANG cookie."""
+    """Test getting the language setting from a request."""
+    # Default language
+    default_lang = config.get("options", "default_lang")
     request = Request()
-    assert l10n.get_request_language(request) == "en"
+    assert l10n.get_request_language(request) == default_lang
 
+    # Language setting from cookie: de
     request.cookies["AURLANG"] = "de"
     assert l10n.get_request_language(request) == "de"
 
+    # Language setting from cookie: nonsense
+    # Should fallback to default lang
+    request.cookies["AURLANG"] = "nonsense"
+    assert l10n.get_request_language(request) == default_lang
+
+    # Language setting from query param: de
+    request.cookies = {}
+    request.query_params = {"language": "de"}
+    assert l10n.get_request_language(request) == "de"
+
+    # Language setting from query param: nonsense
+    # Should fallback to default lang
+    request.query_params = {"language": "nonsense"}
+    assert l10n.get_request_language(request) == default_lang
+
+    # Language setting from query param: de and cookie
+    # Query param should have precedence
+    request.query_params = {"language": "de"}
+    request.cookies["AURLANG"] = "fr"
+    assert l10n.get_request_language(request) == "de"
+
+    # Language setting from authenticated user
+    request.cookies = {}
+    request.query_params = {}
+    request.user.authenticated = True
+    request.user.LangPreference = "de"
+    assert l10n.get_request_language(request) == "de"
+
+    # Language setting from authenticated user with query param
+    # Query param should have precedence
+    request.query_params = {"language": "fr"}
+    assert l10n.get_request_language(request) == "fr"
+
+    # Language setting from authenticated user with cookie
+    # DB setting should have precedence
+    request.query_params = {}
+    request.cookies["AURLANG"] = "fr"
+    assert l10n.get_request_language(request) == "de"
+
 
 def test_get_raw_translator_for_request():
     """Make sure that get_raw_translator_for_request is giving us

test/test_time.py

@@ -15,18 +15,22 @@ def test_tz_offset_mst():
 
 def test_request_timezone():
     request = Request()
-    tz = get_request_timezone(request)
-    assert tz == aurweb.config.get("options", "default_timezone")
 
+    # Default timezone
+    dtz = aurweb.config.get("options", "default_timezone")
+    assert get_request_timezone(request) == dtz
 
-def test_authenticated_request_timezone():
-    # Modify a fake request to be authenticated with the
-    # America/Los_Angeles timezone.
-    request = Request()
+    # Timezone from query params
+    request.query_params = {"timezone": "Europe/Berlin"}
+    assert get_request_timezone(request) == "Europe/Berlin"
+
+    # Timezone from authenticated user.
+    request.query_params = {}
     request.user.authenticated = True
     request.user.Timezone = "America/Los_Angeles"
+    assert get_request_timezone(request) == "America/Los_Angeles"
 
-    # Get the request's timezone, it should be America/Los_Angeles.
-    tz = get_request_timezone(request)
-    assert tz == request.user.Timezone
-    assert tz == "America/Los_Angeles"
+    # Timezone from authenticated user with query param
+    # Query param should have precedence
+    request.query_params = {"timezone": "Europe/Berlin"}
+    assert get_request_timezone(request) == "Europe/Berlin"