"""Health check router."""
from fastapi import APIRouter, Depends, Request
from sqlalchemy import text
from sqlalchemy.ext.asyncio import AsyncSession

from app.api.deps import get_current_admin, get_db
from app.core.redis import check_redis_health

router = APIRouter(prefix="/health", tags=["health"])


@router.get("")
async def health_check(request: Request, db: AsyncSession = Depends(get_db)):
    """Basic health check."""
    db_ok = False
    try:
        await db.execute(text("SELECT 1"))
        db_ok = True
    except Exception:
        db_ok = False

    redis_ok = await check_redis_health()

    status_code = "ok" if db_ok and redis_ok else "degraded"

    response = {
        "status": status_code,
        "service": "rss-platform",
        "db": "ok" if db_ok else "error",
        "redis": "ok" if redis_ok else "error",
    }
    warnings = getattr(request.app.state, "startup_warnings", None)
    if warnings:
        response["warnings"] = warnings
    return response


@router.get("/db", dependencies=[Depends(get_current_admin)])
async def db_health(db: AsyncSession = Depends(get_db)):
    """Database health check."""
    try:
        await db.execute(text("SELECT 1"))
        return {"status": "ok", "component": "database"}
    except Exception as exc:
        return {"status": "error", "component": "database", "detail": str(exc)}


@router.get("/redis", dependencies=[Depends(get_current_admin)])
async def redis_health():
    """Redis health check."""
    ok = await check_redis_health()
    return {"status": "ok" if ok else "error", "component": "redis"}