relay/core/settings.py

"""
Django settings for core project.

Generated by 'django-admin startproject' using Django 5.2.6.

For more information on this file, see
https://docs.djangoproject.com/en/5.2/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/5.2/ref/settings/
"""

import os
from pathlib import Path

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/5.2/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = os.environ.get(
    "SECRET_KEY", "django-insecure-y315h5v5t^1c^rqqcpk1y&!7+f8%8rj3$3bh2k!xoco8x@a+kr"
)

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = os.environ.get("DEBUG", "False").lower() == "true"

ALLOWED_HOSTS = os.environ.get(
    "ALLOWED_HOSTS", "localhost,127.0.0.1,django,nginx"
).split(",")

# Site domain configuration
SITE_DOMAIN = os.environ.get("SITE_DOMAIN", "localhost:8080")

# Groups configuration
# Parse comma-separated groups from environment variable
# Groups can have spaces and capital letters (e.g., "Emacs,Org Social,Elisp")
# Slugs are auto-generated (lowercase, spaces become hyphens)


def slugify_group(name):
    """Convert group name to slug (lowercase, spaces to hyphens)."""
    return name.strip().lower().replace(" ", "-")


GROUPS_ENV = os.environ.get("GROUPS", "")
if GROUPS_ENV.strip():
    # Parse group names (can have spaces and capitals)
    group_names = [group.strip() for group in GROUPS_ENV.split(",") if group.strip()]

    # Create mappings between slugs and names
    GROUPS_MAP = {slugify_group(name): name for name in group_names}
    ENABLED_GROUPS = list(GROUPS_MAP.keys())  # List of slugs for backward compatibility
else:
    GROUPS_MAP = {}
    ENABLED_GROUPS = []


# Application definition

INSTALLED_APPS = [
    "django.contrib.contenttypes",
    "rest_framework",
    "django_filters",
    "huey.contrib.djhuey",
    "app.public.apps.PublicConfig",
    "app.feeds.apps.FeedsConfig",
    "app.feedcontent.apps.FeedcontentConfig",
    "app.polls.apps.PollsConfig",
    "app.replies.apps.RepliesConfig",
    "app.mentions.apps.MentionsConfig",
    "app.reactions.apps.ReactionsConfig",
    "app.repliesto.apps.RepliesToConfig",
    "app.notifications.apps.NotificationsConfig",
    "app.search.apps.SearchConfig",
    "app.groups.apps.GroupsConfig",
    "app.rss.apps.RssConfig",
    "app.boosts.apps.BoostsConfig",
    "app.interactions.apps.InteractionsConfig",
    "app.sse_notifications.apps.SseNotificationsConfig",
    "app.profile.apps.ProfileConfig",
    "app.stats.apps.StatsConfig",
    "app.bridge.apps.BridgeConfig",
]

MIDDLEWARE = [
    "django.middleware.security.SecurityMiddleware",
    "app.feeds.cors_middleware.CORSMiddleware",  # Add CORS headers to all responses
    "django.middleware.common.CommonMiddleware",
    "django.middleware.csrf.CsrfViewMiddleware",
    "app.feeds.middleware.RelayMetadataMiddleware",  # Add global ETag/Last-Modified headers
]

ROOT_URLCONF = "core.urls"

TEMPLATES = []

WSGI_APPLICATION = "core.wsgi.application"


# Database
# https://docs.djangoproject.com/en/5.2/ref/settings/#databases

DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.sqlite3",
        "NAME": BASE_DIR / "db.sqlite3",
    }
}


# No authentication system needed for this API


# Internationalization
# https://docs.djangoproject.com/en/5.2/topics/i18n/

LANGUAGE_CODE = "en-us"

TIME_ZONE = "UTC"

USE_I18N = True

USE_TZ = True


# No static files needed for API-only application

# Default primary key field type
# https://docs.djangoproject.com/en/5.2/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"

# Django REST Framework settings
REST_FRAMEWORK = {
    "DEFAULT_RENDERER_CLASSES": [
        "app.reactions.renderers.UTF8JSONRenderer",
    ],
    "DEFAULT_PAGINATION_CLASS": "rest_framework.pagination.PageNumberPagination",
    "PAGE_SIZE": 20,
    "DEFAULT_FILTER_BACKENDS": [
        "rest_framework.filters.SearchFilter",
        "rest_framework.filters.OrderingFilter",
    ],
    "DEFAULT_PERMISSION_CLASSES": [
        "rest_framework.permissions.AllowAny",
    ],
    "DEFAULT_AUTHENTICATION_CLASSES": [],
    "UNAUTHENTICATED_USER": None,
    "UNAUTHENTICATED_TOKEN": None,
}

# Cache configuration
# In DEBUG (dev/test) we use DummyCache so the suite runs without Redis.
# In production we always use Redis: a startup probe is unsafe because if Redis
# is still warming up at import time the process would silently fall back to
# DummyCache for its entire lifetime, breaking cache invalidation.

if DEBUG:
    CACHES = {
        "default": {
            "BACKEND": "django.core.cache.backends.dummy.DummyCache",
        }
    }
else:
    CACHES = {
        "default": {
            "BACKEND": "django.core.cache.backends.redis.RedisCache",
            "LOCATION": f"redis://{os.environ.get('REDIS_HOST', 'redis')}:{os.environ.get('REDIS_PORT', 6379)}/{os.environ.get('REDIS_CACHE_DB', 1)}",
        }
    }

# Huey configuration for task queue and cron jobs
HUEY = {
    "huey_class": "huey.RedisHuey",
    "name": "org-social-relay",
    "immediate": False,  # Required for consumer to run
    "connection": {
        "host": os.environ.get("REDIS_HOST", "redis"),
        "port": int(os.environ.get("REDIS_PORT", 6379)),
        "db": int(os.environ.get("REDIS_DB", 0)),
    },
    "consumer": {
        "workers": int(os.environ.get("HUEY_WORKERS", 1)),
        "worker_type": "thread",
    },
}