// Copyright 2025 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//go:build !vm_histogram

package promutil

import "github.com/prometheus/client_golang/prometheus"

func (defaultFactory) NewHistogram(opts prometheus.HistogramOpts) Histogram {
	return prometheus.NewHistogram(opts)
}

func (defaultFactory) NewHistogramVec(opts prometheus.HistogramOpts, labelNames []string) HistogramVec {
	return prometheus.NewHistogramVec(opts, labelNames)
}

// RegisterHistogram registers a histogram with the default Prometheus registry.
func RegisterHistogram(h Histogram) {
	prometheus.MustRegister(h)
}

// RegisterHistogramVec registers a histogram vector with the default Prometheus registry.
func RegisterHistogramVec(h HistogramVec) {
	prometheus.MustRegister(h)
}

// AsPrometheusHistogramVec converts a HistogramVec to *prometheus.HistogramVec.
// This is needed for compatibility with APIs that require the concrete type.
func AsPrometheusHistogramVec(h HistogramVec) *prometheus.HistogramVec {
	return h.(*prometheus.HistogramVec)
}