Initial commit

app/config.py

@@ -0,0 +1,45 @@
+import os
+from dataclasses import dataclass
+from functools import lru_cache
+from pathlib import Path
+
+from dotenv import load_dotenv
+
+load_dotenv()
+
+
+@dataclass(frozen=True)
+class AppConfig:
+    app_username: str
+    app_password: str
+    app_password_hash: str | None
+    session_secret: str
+    database_path: Path
+    request_timeout_seconds: int
+    session_cookie_secure: bool
+    metrics_sampler_interval_seconds: int
+
+
+
+def _bool_env(name: str, default: bool) -> bool:
+    value = os.getenv(name)
+    if value is None:
+        return default
+    return value.strip().lower() in {"1", "true", "yes", "on"}
+
+
+@lru_cache(maxsize=1)
+def get_config() -> AppConfig:
+    data_dir = Path(os.getenv("DATA_DIR", "./data"))
+    data_dir.mkdir(parents=True, exist_ok=True)
+
+    return AppConfig(
+        app_username=os.getenv("APP_USERNAME", "admin"),
+        app_password=os.getenv("APP_PASSWORD", "changeme"),
+        app_password_hash=os.getenv("APP_PASSWORD_HASH"),
+        session_secret=os.getenv("SESSION_SECRET", "change-this-secret"),
+        database_path=Path(os.getenv("DB_PATH", str(data_dir / "dashboard.db"))),
+        request_timeout_seconds=int(os.getenv("RPC_TIMEOUT_SECONDS", "15")),
+        session_cookie_secure=_bool_env("SESSION_COOKIE_SECURE", False),
+        metrics_sampler_interval_seconds=max(15, int(os.getenv("METRICS_SAMPLER_INTERVAL_SECONDS", "60"))),
+    )