first commit

backend/app/core_settings.py

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+from __future__ import annotations
+
+from dataclasses import dataclass
+from functools import lru_cache
+
+import config
+from app.models.definitions import MetricDefinition
+
+
+@dataclass(frozen=True)
+class AppSettings:
+    app_name: str
+    version: str
+    debug: bool
+    api_prefix: str
+    timezone: str
+    host: str
+    port: int
+    site_name: str
+    installed_power_kwp: float
+    co2_factor: float
+    influx: dict
+    storage: dict
+    cors_origins: list[str]
+    modules: dict
+    realtime: dict
+    time_ranges: dict
+    analytics: dict
+    history: dict
+    strings: list[dict]
+    status_metrics: list[str]
+    visible_entity_table: list[str]
+    frontend_defaults: dict
+    auth: dict
+    i18n: dict
+    metrics: dict[str, MetricDefinition]
+
+
+@lru_cache(maxsize=1)
+def get_settings() -> AppSettings:
+    metric_catalog = {
+        metric_id: MetricDefinition(id=metric_id, **payload)
+        for metric_id, payload in config.METRICS.items()
+    }
+    return AppSettings(
+        app_name=config.APP_CONFIG["name"],
+        version=config.APP_CONFIG["version"],
+        debug=config.APP_CONFIG["debug"],
+        api_prefix=config.APP_CONFIG["api_prefix"],
+        timezone=config.APP_CONFIG["timezone"],
+        host=config.APP_CONFIG["host"],
+        port=config.APP_CONFIG["port"],
+        site_name=config.SITE_CONFIG["site_name"],
+        installed_power_kwp=config.SITE_CONFIG["installed_power_kwp"],
+        co2_factor=config.SITE_CONFIG["co2_factor_kg_per_kwh"],
+        influx=config.INFLUXDB_CONFIG,
+        storage=config.STORAGE_CONFIG,
+        cors_origins=config.CORS_ORIGINS,
+        modules=config.MODULES,
+        realtime=config.REALTIME,
+        time_ranges=config.TIME_RANGES,
+        analytics=config.ANALYTICS,
+        history=config.HISTORY,
+        strings=config.STRINGS,
+        status_metrics=config.STATUS_METRICS,
+        visible_entity_table=config.VISIBLE_ENTITY_TABLE,
+        frontend_defaults=config.FRONTEND_DEFAULTS,
+        auth=config.AUTH_CONFIG,
+        i18n=config.I18N,
+        metrics=metric_catalog,
+    )