Initial Plast Track MVP

backend/app/config.py

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+from functools import lru_cache
+
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+
+class Settings(BaseSettings):
+    model_config = SettingsConfigDict(env_file=".env", env_file_encoding="utf-8", extra="ignore")
+
+    app_name: str = "Plast Track MVP"
+    database_url: str = "postgresql+psycopg://plasttrack:plasttrack@database:5432/plasttrack"
+    mqtt_host: str = "mqtt"
+    mqtt_port: int = 1883
+    mqtt_topic: str = "plasttrack/machines/+/events"
+    mqtt_client_id: str = "plast-track-backend"
+    frontend_origin: str = "http://localhost:5173"
+    downtime_check_interval_sec: int = 5
+
+
+@lru_cache
+def get_settings() -> Settings:
+    return Settings()