Initial commit with Phase 0 Scaffolding

backend/app/config.py

@@ -0,0 +1,47 @@
+"""
+PaperJet backend configuration.
+
+All settings are driven by environment variables (see .env.example).
+"""
+
+from pathlib import Path
+from pydantic_settings import BaseSettings
+
+
+class Settings(BaseSettings):
+    """Application settings loaded from environment variables."""
+
+    # --- Security ---
+    SECRET_KEY: str = "change-me-in-production"
+
+    # --- Upload ---
+    MAX_UPLOAD_MB: int = 200
+
+    # --- Retention ---
+    TRASH_RETENTION_DAYS: int = 30
+    AUTO_VERSION_RETENTION_DAYS: int = 30
+
+    # --- Cookie ---
+    COOKIE_SECURE: bool = False  # Set True in production (behind HTTPS proxy)
+    COOKIE_MAX_AGE_SECONDS: int = 7 * 24 * 60 * 60  # 7 days
+    COOKIE_NAME: str = "paperjet_session"
+
+    # --- Database ---
+    DATABASE_PATH: Path = Path("/data/db/app.sqlite")
+
+    # --- Storage ---
+    PDF_STORAGE_PATH: Path = Path("/data/pdfs")
+    THUMBNAILS_PATH: Path = Path("/data/thumbnails")
+
+    # --- App ---
+    APP_VERSION: str = "0.1.0"
+    DEBUG: bool = False
+
+    # --- Rate Limiting ---
+    LOGIN_MAX_ATTEMPTS: int = 5
+    LOGIN_LOCKOUT_SECONDS: int = 900  # 15 minutes
+
+    model_config = {"env_prefix": "PAPERJET_", "env_file": ".env", "extra": "ignore"}
+
+
+settings = Settings()