package metrics

import (
	"time"

	"github.com/prometheus/client_golang/prometheus"
)

type shardMetrics struct {
	shardOperationDuration *prometheus.HistogramVec
}

func newShardMetrics() shardMetrics {
	return shardMetrics{
		shardOperationDuration: prometheus.NewHistogramVec(prometheus.HistogramOpts{
			Namespace: namespace,
			Subsystem: "shard",
			Name:      "operation_duration_seconds",
			Help:      "Accumulated shard operations duration",
		}, []string{"id", "operation"}),
	}
}

func (s *shardMetrics) register() {
	prometheus.MustRegister(s.shardOperationDuration)
}

func (s *shardMetrics) AddShardOperationDuration(shardID string, operation string, d time.Duration) {
	s.shardOperationDuration.WithLabelValues(shardID, operation).Observe(d.Seconds())
}