package aggregate

import (
	"github.com/pingcap-inc/clinic/pkg/ngm/statements/api"
	"github.com/pingcap-inc/clinic/pkg/ngm/statements/load"
)

func AggMaxRocksdbKeySkippedCount() Aggregator {
	return &MaxRocksdbKeySkippedCount{}
}

type MaxRocksdbKeySkippedCount struct {
	max uint64
}

func (a *MaxRocksdbKeySkippedCount) Add(record *load.StmtRecord) {
	if record.MaxRocksdbKeySkippedCount > a.max {
		a.max = record.MaxRocksdbKeySkippedCount
	}
}

func (a *MaxRocksdbKeySkippedCount) Merge(agg Aggregator) {
	if agg, ok := agg.(*MaxRocksdbKeySkippedCount); ok {
		if agg.max > a.max {
			a.max = agg.max
		}
	}
}

func (a *MaxRocksdbKeySkippedCount) Output(model *api.Model) {
	model.MaxRocksdbKeySkippedCount = uint(a.max)
}