from __future__ import annotations

import logging

from fastapi import APIRouter

from app.api.schemas import AuthConfigOut, HealthOut, SearchStatusOut
from app.electronics.db.connection import check_connection
from app.infrastructure.security import auth_config_summary
from app.infrastructure.settings import (
    DB_NAME, EMBEDDINGS_MODEL, OLLAMA_MODEL_NAME, USE_DDG_SEARCH, USE_GOOGLE_CSE,
)
from app.services import ollama_service

logger = logging.getLogger(__name__)
router = APIRouter(tags=["health"])


@router.get("/health", response_model=HealthOut)
def health() -> HealthOut:
    """Liveness/readiness probe used by the React app to show a banner when
    Postgres or Ollama aren't reachable, instead of failing silently.

    Ollama being down does not make the service degraded: it is only used to
    fill spec gaps, and the pipeline runs deterministically without it."""
    db_ok = check_connection()
    return HealthOut(
        status="ok" if db_ok else "degraded",
        database=db_ok,
        database_name=DB_NAME,
        ollama=bool(ollama_service._ensure_client()),
        ollama_model=OLLAMA_MODEL_NAME,
        embeddings_model=EMBEDDINGS_MODEL,
        search=SearchStatusOut(ddg=USE_DDG_SEARCH, google_cse=USE_GOOGLE_CSE),
        auth=AuthConfigOut(**auth_config_summary()),
    )