"""YakPanel - Configuration"""
import os
from typing import Any
from pydantic_settings import BaseSettings
from functools import lru_cache

# Runtime config loaded from DB on startup (overrides Settings)
_runtime_config: dict[str, Any] = {}


class Settings(BaseSettings):
    """Application settings"""
    app_name: str = "YakPanel"
    app_version: str = "1.0.0"
    debug: bool = False

    # Paths (Ubuntu/Debian default)
    panel_path: str = "/www/server/YakPanel-server"
    setup_path: str = "/www/server"
    www_root: str = "/www/wwwroot"
    www_logs: str = "/www/wwwlogs"
    vhost_path: str = "/www/server/panel/vhost"

    # Database (relative SQLite paths are resolved to backend/data/, not process CWD)
    database_url: str = "sqlite+aiosqlite:///./data/default.db"

    # Redis
    redis_url: str = "redis://localhost:6379/0"

    # Auth
    secret_key: str = "YakPanel-server-secret-change-in-production"
    algorithm: str = "HS256"
    access_token_expire_minutes: int = 60 * 24  # 24 hours

    # Panel
    panel_port: int = 8888
    webserver_type: str = "nginx"  # nginx, apache, openlitespeed

    # CORS (comma-separated origins, e.g. https://panel.example.com)
    cors_extra_origins: str = ""

    # Remote SSH installer (disabled by default — high risk; see docs)
    enable_remote_installer: bool = False
    remote_install_default_url: str = "https://www.yakpanel.com/YakPanel-server/install.sh"
    remote_install_rate_limit_per_ip: int = 10
    remote_install_rate_window_minutes: int = 60
    # Comma-separated CIDRs; empty = no restriction (e.g. "10.0.0.0/8,192.168.0.0/16")
    remote_install_allowed_target_cidrs: str = ""

    class Config:
        env_file = ".env"
        env_file_encoding = "utf-8"


@lru_cache
def get_settings() -> Settings:
    return Settings()


def get_runtime_config() -> dict[str, Any]:
    """Get effective panel config (Settings + DB overrides)."""
    s = get_settings()
    base = {
        "panel_port": s.panel_port,
        "www_root": s.www_root,
        "setup_path": s.setup_path,
        "www_logs": s.www_logs,
        "vhost_path": s.vhost_path,
        "webserver_type": s.webserver_type,
        "mysql_root": "",
    }
    for k, v in _runtime_config.items():
        if k in base:
            if k == "panel_port":
                try:
                    base[k] = int(v)
                except (ValueError, TypeError):
                    pass
            else:
                base[k] = v
    base["backup_path"] = os.path.join(base["setup_path"], "backup")
    return base


def set_runtime_config_overrides(overrides: dict[str, str]) -> None:
    """Set runtime config from DB (called on startup)."""
    global _runtime_config
    _runtime_config = dict(overrides)