Upload backend/hue_portal/settings.py with huggingface_hub

backend/hue_portal/settings.py

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+import os
+import time
+from pathlib import Path
+import environ
+
+BASE_DIR = Path(__file__).resolve().parent.parent
+env = environ.Env()
+environ.Env.read_env(os.path.join(BASE_DIR, "..", ".env"))
+
+SECRET_KEY = env("DJANGO_SECRET_KEY", default="change-me")
+DEBUG = env.bool("DJANGO_DEBUG", default=False)
+ALLOWED_HOSTS = env.list("DJANGO_ALLOWED_HOSTS", default=["*"])
+
+INSTALLED_APPS = [
+    "django.contrib.admin",
+    "django.contrib.auth",
+    "django.contrib.contenttypes",
+    "django.contrib.sessions",
+    "django.contrib.messages",
+    "django.contrib.staticfiles",
+    "django.contrib.postgres",
+    "corsheaders",
+    "rest_framework",
+    "hue_portal.core",
+    "hue_portal.chatbot",
+]
+
+MIDDLEWARE = [
+    "django.middleware.security.SecurityMiddleware",
+    "whitenoise.middleware.WhiteNoiseMiddleware",
+    "django.middleware.gzip.GZipMiddleware",
+    "corsheaders.middleware.CorsMiddleware",
+    "django.middleware.common.CommonMiddleware",
+    "django.middleware.csrf.CsrfViewMiddleware",
+    "django.contrib.sessions.middleware.SessionMiddleware",
+    "django.contrib.auth.middleware.AuthenticationMiddleware",
+    "django.contrib.messages.middleware.MessageMiddleware",
+    "django.middleware.clickjacking.XFrameOptionsMiddleware",
+    "hue_portal.core.middleware.SecurityHeadersMiddleware",
+    "hue_portal.core.middleware.AuditLogMiddleware",
+]
+
+ROOT_URLCONF = "hue_portal.hue_portal.urls"
+
+TEMPLATES = [
+    {
+        "BACKEND": "django.template.backends.django.DjangoTemplates",
+        "DIRS": [],
+        "APP_DIRS": True,
+        "OPTIONS": {
+            "context_processors": [
+                "django.template.context_processors.debug",
+                "django.template.context_processors.request",
+                "django.contrib.auth.context_processors.auth",
+                "django.contrib.messages.context_processors.messages",
+            ],
+        },
+    },
+]
+
+WSGI_APPLICATION = "hue_portal.hue_portal.wsgi.application"
+
+def _mask(value: str) -> str:
+    if not value:
+        return ""
+    return value[:4] + "***"
+
+database_url = env("DATABASE_URL", default=None)
+
+if database_url:
+    DATABASES = {"default": env.db("DATABASE_URL")}
+    masked = database_url.replace(env("POSTGRES_PASSWORD", default=""), "***")
+    print(f"[DB] Using DATABASE_URL: {masked}", flush=True)
+else:
+    print("[DB] DATABASE_URL not provided – thử kết nối qua POSTGRES_* / tunnel.", flush=True)
+try:
+    import psycopg2
+
+        host = env("POSTGRES_HOST", default="localhost")
+        port = env("POSTGRES_PORT", default="5543")
+        user = env("POSTGRES_USER", default="hue")
+        password = env("POSTGRES_PASSWORD", default="huepass")
+        database = env("POSTGRES_DB", default="hue_portal")
+
+        last_error = None
+        for attempt in range(1, 4):
+            try:
+    test_conn = psycopg2.connect(
+                    host=host,
+                    port=port,
+                    user=user,
+                    password=password,
+                    database=database,
+                    connect_timeout=3,
+    )
+    test_conn.close()
+                last_error = None
+                break
+            except psycopg2.OperationalError as exc:
+                last_error = exc
+                print(
+                    f"[DB] Attempt {attempt}/3 failed to reach PostgreSQL ({exc}).",
+                    flush=True,
+                )
+                time.sleep(1)
+
+        if last_error:
+            raise last_error
+
+    DATABASES = {
+        "default": {
+            "ENGINE": "django.db.backends.postgresql",
+                "NAME": database,
+                "USER": user,
+                "PASSWORD": password,
+                "HOST": host,
+                "PORT": port,
+            }
+        }
+        print(
+            f"[DB] Connected to PostgreSQL at {host}:{port} as {_mask(user)}",
+            flush=True,
+        )
+    except Exception as db_error:
+        print(
+            f"[DB] ⚠️ Falling back to SQLite because PostgreSQL is unavailable ({db_error})",
+            flush=True,
+        )
+    DATABASES = {
+        "default": {
+            "ENGINE": "django.db.backends.sqlite3",
+            "NAME": BASE_DIR / "db.sqlite3",
+        }
+    }
+
+# Cache configuration: opt-in Redis, otherwise safe local cache
+USE_REDIS_CACHE = env.bool("ENABLE_REDIS_CACHE", default=False)
+_redis_configured = False
+
+if USE_REDIS_CACHE:
+    try:
+        import redis
+        from urllib.parse import urlparse
+
+        redis_url = env("REDIS_URL", default="redis://localhost:6380/0")
+        parsed = urlparse(redis_url)
+        test_client = redis.Redis(
+            host=parsed.hostname or "localhost",
+            port=parsed.port or 6380,
+            username=parsed.username,
+            password=parsed.password,
+            db=int(parsed.path.lstrip("/") or 0),
+            socket_connect_timeout=1,
+        )
+        test_client.ping()
+        test_client.close()
+
+        CACHES = {
+            "default": {
+                "BACKEND": "django.core.cache.backends.redis.RedisCache",
+                "LOCATION": redis_url,
+            }
+        }
+        _redis_configured = True
+        print(f"[CACHE] ✅ Using Redis cache at {redis_url}", flush=True)
+    except Exception as redis_error:
+        print(f"[CACHE] ⚠️ Redis unavailable ({redis_error}), falling back to local cache.", flush=True)
+
+if not _redis_configured:
+    # LocMemCache keeps throttling functional without external services
+    CACHES = {
+        "default": {
+            "BACKEND": "django.core.cache.backends.locmem.LocMemCache",
+            "LOCATION": "hue-portal-default-cache",
+        }
+    }
+    # Reduce throttling aggressiveness failures by ensuring predictable cache
+    print("[CACHE] ℹ️ Using in-memory cache (LocMemCache).", flush=True)
+
+REST_FRAMEWORK = {
+    "DEFAULT_RENDERER_CLASSES": ["rest_framework.renderers.JSONRenderer"],
+    "DEFAULT_PARSER_CLASSES": ["rest_framework.parsers.JSONParser"],
+    "DEFAULT_PAGINATION_CLASS": "rest_framework.pagination.PageNumberPagination",
+    "PAGE_SIZE": 20,
+    "DEFAULT_THROTTLE_CLASSES": [
+        "rest_framework.throttling.AnonRateThrottle",
+    ],
+    "DEFAULT_THROTTLE_RATES": {
+        "anon": "60/minute",
+    },
+}
+
+STATIC_URL = "/static/"
+STATIC_ROOT = BASE_DIR / "static"
+
+CORS_ALLOW_ALL_ORIGINS = env.bool("CORS_ALLOW_ALL_ORIGINS", default=True)  # Allow all in dev
+CORS_ALLOWED_ORIGINS = env.list("CORS_ALLOWED_ORIGINS", default=["http://localhost:3000", "http://127.0.0.1:3000", "http://localhost:5173", "http://127.0.0.1:5173"])
+CORS_ALLOW_CREDENTIALS = True
+CORS_ALLOW_METHODS = ["GET", "POST", "PUT", "PATCH", "DELETE", "OPTIONS"]
+CORS_ALLOW_HEADERS = ["*"]
+
+SECURE_HSTS_SECONDS = 31536000
+SECURE_SSL_REDIRECT = False
+SESSION_COOKIE_SECURE = True
+CSRF_COOKIE_SECURE = True
+SECURE_CONTENT_TYPE_NOSNIFF = True
+SECURE_BROWSER_XSS_FILTER = True
+
+DEFAULT_AUTO_FIELD = "django.db.models.AutoField"
+