use axum::{Json, extract::State, http::StatusCode};
use serde::Serialize;
use ts_rs::TS;

use crate::{db, state::AppState};

#[derive(Serialize, TS)]
#[ts(export)]
pub struct HealthResponse {
    /// `ok` veya `degraded`
    status: &'static str,
    /// `ok` veya `error`
    db: &'static str,
    version: &'static str,
}

/// Sağlık kontrolü (Dokploy health check bunu kullanır).
/// DB erişilemezse 503 döner.
pub async fn health(State(state): State<AppState>) -> (StatusCode, Json<HealthResponse>) {
    let version = env!("CARGO_PKG_VERSION");

    match db::ping(&state.db).await {
        Ok(()) => (
            StatusCode::OK,
            Json(HealthResponse {
                status: "ok",
                db: "ok",
                version,
            }),
        ),
        Err(e) => {
            tracing::warn!(error = %e, "health: veritabanına erişilemiyor");
            (
                StatusCode::SERVICE_UNAVAILABLE,
                Json(HealthResponse {
                    status: "degraded",
                    db: "error",
                    version,
                }),
            )
        }
    }
}