"""Minimal FastAPI entrypoint; product endpoints are added in stage 2."""

from typing import Any

import psycopg
import uvicorn
from fastapi import FastAPI, HTTPException, status

from app import __version__
from app.core.config import get_settings
from app.core.secrets import SecretFileError

app = FastAPI(title="Geological RAG API", version=__version__)


@app.get("/api/v1/health/live", tags=["health"])
def live() -> dict[str, str]:
    return {"status": "ok", "version": __version__}


@app.get("/api/v1/health/ready", tags=["health"])
def ready() -> dict[str, str]:
    settings = get_settings()
    try:
        dsn = settings.database_url().set(drivername="postgresql")
        with psycopg.connect(
            dsn.render_as_string(hide_password=False),
            connect_timeout=2,
        ) as connection:
            connection.execute("SELECT 1")
    except (OSError, SecretFileError, psycopg.Error) as exc:
        raise HTTPException(
            status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
            detail="database unavailable",
        ) from exc
    return {"status": "ready"}


@app.get("/api/v1/meta", tags=["meta"])
def meta() -> dict[str, Any]:
    settings = get_settings()
    return {
        "name": settings.app_name,
        "environment": settings.app_env,
        "version": __version__,
        "models": {
            "embedding": settings.embedding_model,
            "rerank": settings.rerank_model,
            "generation": settings.llm_model,
        },
    }


if __name__ == "__main__":
    # Container ingress is controlled by Compose; only the edge proxy publishes a port.
    uvicorn.run("app.main:app", host="0.0.0.0", port=8000)  # noqa: S104