// Fenrir console screen reader.
// Copyright (c) 2026 Storm Dragon
// SPDX-License-Identifier: GPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation, either version 3 of the License, or (at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License along with
// this program. If not, see <https://www.gnu.org/licenses/gpl-3.0.html>.

// Package diagnostic records opt-in timings and reader decisions without text or key values.
package diagnostic

import (
	"context"
	"log/slog"
	"time"
)

func Enabled() bool {
	return slog.Default().Enabled(context.Background(), slog.LevelDebug)
}

func Record(stage string, attributes ...any) {
	if !Enabled() {
		return
	}
	attributes = append(attributes, "at", time.Now())
	slog.Debug(stage, attributes...)
}

func Timing(stage string, started time.Time, attributes ...any) {
	if !Enabled() {
		return
	}
	attributes = append(attributes, "elapsed", time.Since(started))
	Record(stage, attributes...)
}