package httpapi

import (
	"context"
	"net/http"
	"time"

	"github.com/jackc/pgx/v5/pgxpool"
)

// HealthHandler exposes /healthz (liveness) and /readyz (readiness + DB ping).
type HealthHandler struct {
	Pool *pgxpool.Pool
}

func (h *HealthHandler) Healthz(w http.ResponseWriter, r *http.Request) {
	renderJSON(w, http.StatusOK, map[string]string{"status": "ok"})
}

func (h *HealthHandler) Readyz(w http.ResponseWriter, r *http.Request) {
	ctx, cancel := context.WithTimeout(r.Context(), 2*time.Second)
	defer cancel()
	if err := h.Pool.Ping(ctx); err != nil {
		renderError(w, http.StatusServiceUnavailable, "Database unavailable", err.Error())
		return
	}
	renderJSON(w, http.StatusOK, map[string]string{"status": "ready"})
}