Add user profile with a timezone

poetry.lock

@@ -1100,7 +1100,7 @@ postgresql = ["psycopg2"]
 
 [[package]]
 name = "pytz"
-version = "2022.7"
+version = "2022.7.1"
 description = "World timezone definitions, modern and historical"
 category = "main"
 optional = false
@@ -1487,7 +1487,7 @@ testing = ["flake8 (<5)", "func-timeout", "jaraco.functools", "jaraco.itertools"
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.8"
-content-hash = "f2e10b828fa5d1a92dd93e7549c06425b4b70a7910f57d22f56e4c6ad9d80a00"
+content-hash = "d17f83d59ef4f4e588d10a40d71090833fa7604880abde498d37771d8ca8b698"
 
 [metadata.files]
 amqp = [
@@ -2224,8 +2224,8 @@ python3-openid = [
     {file = "python3_openid-3.2.0-py3-none-any.whl", hash = "sha256:6626f771e0417486701e0b4daff762e7212e820ca5b29fcc0d05f6f8736dfa6b"},
 ]
 pytz = [
-    {file = "pytz-2022.7-py2.py3-none-any.whl", hash = "sha256:93007def75ae22f7cd991c84e02d434876818661f8df9ad5df9e950ff4e52cfd"},
+    {file = "pytz-2022.7.1-py2.py3-none-any.whl", hash = "sha256:78f4f37d8198e0627c5f1143240bb0206b8691d8d7ac6d78fee88b78733f8c4a"},
-    {file = "pytz-2022.7.tar.gz", hash = "sha256:7ccfae7b4b2c067464a6733c6261673fdb8fd1be905460396b97a073e9fa683a"},
+    {file = "pytz-2022.7.1.tar.gz", hash = "sha256:01a0681c4b9684a28304615eba55d1ab31ae00bf68ec157ec3708a8182dbbcd0"},
 ]
 pyyaml = [
     {file = "PyYAML-6.0-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:d4db7c7aef085872ef65a8fd7d6d09a14ae91f691dec3e87ee5ee0539d516f53"},

pyproject.toml

@@ -31,6 +31,7 @@ musicbrainzngs = "^0.7.1"
 cinemagoer = "^2022.12.27"
 pysportsdb = "^0.1.0"
 django-cachalot = "^2.5.2"
+pytz = "^2022.7.1"
 
 [tool.poetry.dev-dependencies]
 Werkzeug = "2.0.3"

vrobbler/apps/profiles/admin.py

@@ -0,0 +1,9 @@
+from django.contrib import admin
+
+from profiles.models import UserProfile
+
+
+@admin.register(UserProfile)
+class UserProfileAdmin(admin.ModelAdmin):
+    date_hierarchy = "created"
+    ordering = ("-created",)

vrobbler/apps/profiles/constants.py

@@ -0,0 +1,17 @@
+from datetime import datetime
+
+import pytz
+
+ALL_TIMEZONE_CHOICES = tuple(zip(pytz.all_timezones, pytz.all_timezones))
+COMMON_TIMEZONE_CHOICES = tuple(
+    zip(pytz.common_timezones, pytz.common_timezones)
+)
+PRETTY_TIMEZONE_CHOICES = []
+
+for tz in pytz.common_timezones:
+    now = datetime.now(pytz.timezone(tz))
+    ofs = now.strftime("%z")
+    PRETTY_TIMEZONE_CHOICES.append((int(ofs), tz, "(GMT%s) %s" % (ofs, tz)))
+PRETTY_TIMEZONE_CHOICES.sort()
+for i in range(len(PRETTY_TIMEZONE_CHOICES)):
+    PRETTY_TIMEZONE_CHOICES[i] = PRETTY_TIMEZONE_CHOICES[i][1:]

vrobbler/apps/profiles/models.py

@@ -0,0 +1,18 @@
+from django.contrib.auth import get_user_model
+from django.db import models
+from django_extensions.db.models import TimeStampedModel
+from profiles.constants import PRETTY_TIMEZONE_CHOICES
+
+User = get_user_model()
+
+
+class UserProfile(TimeStampedModel):
+    user = models.OneToOneField(
+        User, on_delete=models.CASCADE, related_name="profile"
+    )
+    timezone = models.CharField(
+        max_length=255, choices=PRETTY_TIMEZONE_CHOICES
+    )
+
+    def __str__(self):
+        return f"User profile for {self.user}"

vrobbler/apps/profiles/signals.py

@@ -0,0 +1,13 @@
+from django.contrib.auth import get_user_model
+from django.db.models.base import post_save
+from django.dispatch import receiver
+
+from profiles.models import UserProfile
+
+User = get_user_model()
+
+
+@receiver(post_save, sender=User)
+def create_profile(sender, instance, created, **kwargs):
+    if created:
+        UserProfile.objects.create(user=instance)

vrobbler/apps/profiles/utils.py

@@ -0,0 +1,25 @@
+import datetime
+import settings
+import pytz
+
+# need to translate to a non-naive timezone, even if timezone == settings.TIME_ZONE, so we can compare two dates
+def to_user_timezone(date, profile):
+    timezone = profile.timezone if profile.timezone else settings.TIME_ZONE
+    return date.replace(tzinfo=pytz.timezone(settings.TIME_ZONE)).astimezone(
+        pytz.timezone(timezone)
+    )
+
+
+def to_system_timezone(date, profile):
+    timezone = profile.timezone if profile.timezone else settings.TIME_ZONE
+    return date.replace(tzinfo=pytz.timezone(timezone)).astimezone(
+        pytz.timezone(settings.TIME_ZONE)
+    )
+
+
+def now_timezone():
+    return (
+        datetime.datetime.now()
+        .replace(tzinfo=pytz.timezone(settings.TIME_ZONE))
+        .astimezone(pytz.timezone(settings.TIME_ZONE))
+    )

vrobbler/settings.py

@@ -84,6 +84,7 @@ INSTALLED_APPS = [
     "django_extensions",
     'rest_framework.authtoken',
     "cachalot",
+    "profiles",
     "scrobbles",
     "videos",
     "music",