package observability

import (
	"context"
	"os"
	"strings"

	"evobgp/internal/logging"
)

// StartOTelIfEnabled is an opt-in stub for OpenTelemetry (EVOBGP_OTEL_ENDPOINT).
// Full exporter wiring lands when the ops stack provides a collector; this logs intent only.
func StartOTelIfEnabled(ctx context.Context) (shutdown func(context.Context) error) {
	ep := strings.TrimSpace(os.Getenv("EVOBGP_OTEL_ENDPOINT"))
	if ep == "" {
		return func(context.Context) error { return nil }
	}
	logging.Default().Info("otel opt-in enabled (stub; export not wired yet)", "endpoint", ep)
	_ = ctx
	return func(context.Context) error { return nil }
}