import tomllib
from pathlib import Path
from fastapi import APIRouter, HTTPException
import socket

from bd import Settings
from redis_db import get_redis_client

# Создаем базовый router для FastAPI
router = APIRouter(tags=["base"])

def get_version():
    """Получить версию из pyproject.toml"""
    try:
        pyproject_path = Path(__file__).parent.parent / "pyproject.toml"
        with open(pyproject_path, "rb") as f:
            pyproject = tomllib.load(f)
            return pyproject["project"]["version"]
    except:
        return "0.1.0"

@router.get("/")
async def root():
    return {"message": "API is running"}

@router.get("/health")
async def health():
    return {"status": "ok"}

@router.get("/version")
async def version():
    return {"version": get_version()}


@router.get("/health/db")
async def health_db():
    """Проверка доступности БД по TCP (host:port)"""
    settings = Settings()
    host = settings.DB_HOST
    port = settings.DB_PORT
    try:
        # Пробуем открыть TCP-соединение к хосту:порту
        with socket.create_connection((host, port), timeout=3):
            return {"status": "ok", "db": "reachable", "host": host, "port": port}
    except Exception as e:
        raise HTTPException(status_code=503, detail=f"db unreachable: {e}")


@router.get("/health/redis")
async def health_redis():
    """Проверка подключения к Redis через ping()"""
    client = get_redis_client()
    try:
        if client.ping():
            # Получаем параметры соединения для удобства в ответе
            conn_kwargs = getattr(client, "connection_pool", None)
            info = {}
            if conn_kwargs:
                info = conn_kwargs.connection_kwargs if hasattr(conn_kwargs, 'connection_kwargs') else {}
            return {"status": "ok", "redis": "reachable", "info": info}
        else:
            raise HTTPException(status_code=503, detail="redis ping failed")
    except Exception as e:
        raise HTTPException(status_code=503, detail=f"redis unreachable: {e}")