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,
    )