"""Shared configuration management using Pydantic Settings."""

from functools import lru_cache

from pydantic_settings import BaseSettings, SettingsConfigDict


class BaseConfig(BaseSettings):
    """Base configuration shared across all services."""

    model_config = SettingsConfigDict(
        env_file=".env",
        env_file_encoding="utf-8",
        extra="ignore",
    )

    # Service identification
    service_name: str = "unknown"
    machine_id: str = "local"

    # Logging
    log_level: str = "INFO"
    log_format: str = "json"  # "json" or "console"

    # Redis
    redis_url: str = "redis://localhost:6379"

    # Events
    events_backend: str = "redis_pubsub"


class CollectorConfig(BaseConfig):
    """Collector service configuration."""

    service_name: str = "collector"

    # Aggregator connection
    aggregator_url: str = "localhost:50051"

    # Collection settings
    collection_interval: int = 5  # seconds

    # Metrics to collect
    collect_cpu: bool = True
    collect_memory: bool = True
    collect_disk: bool = True
    collect_network: bool = True
    collect_load: bool = True


class AggregatorConfig(BaseConfig):
    """Aggregator service configuration."""

    service_name: str = "aggregator"

    # gRPC server
    grpc_port: int = 50051

    # TimescaleDB - can be set directly via TIMESCALE_URL
    timescale_url: str = "postgresql://monitor:monitor@localhost:5432/monitor"


class GatewayConfig(BaseConfig):
    """Gateway service configuration."""

    service_name: str = "gateway"

    # HTTP server
    http_port: int = 8000

    # Aggregator connection
    aggregator_url: str = "localhost:50051"

    # TimescaleDB - can be set directly via TIMESCALE_URL
    timescale_url: str = "postgresql://monitor:monitor@localhost:5432/monitor"

    # Edge forwarding (optional - for pushing to cloud edge)
    edge_url: str = ""  # e.g., wss://sysmonstm.mcrn.ar/ws
    edge_api_key: str = ""


class AlertsConfig(BaseConfig):
    """Alerts service configuration."""

    service_name: str = "alerts"

    # TimescaleDB - can be set directly via TIMESCALE_URL or built from components
    timescale_url: str = "postgresql://monitor:monitor@localhost:5432/monitor"


@lru_cache
def get_collector_config() -> CollectorConfig:
    return CollectorConfig()


@lru_cache
def get_aggregator_config() -> AggregatorConfig:
    return AggregatorConfig()


@lru_cache
def get_gateway_config() -> GatewayConfig:
    return GatewayConfig()


@lru_cache
def get_alerts_config() -> AlertsConfig:
    return AlertsConfig()