/*
Copyright © 2026 Thomas von Dein

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 <http://www.gnu.org/licenses/>.
*/
package es

import (
	"context"

	"codeberg.org/scip/esctl/pkg/cfg"
	"github.com/elastic/go-elasticsearch/v9/typedapi/esdsl"
	"github.com/elastic/go-elasticsearch/v9/typedapi/indices/rollover"
	"github.com/elastic/go-elasticsearch/v9/typedapi/types"
)

func RolloverConditions(conf *cfg.Config) types.RolloverConditionsVariant {
	cond := esdsl.NewRolloverConditions()

	if conf.MaxAge != "" {
		cond.MaxAge(esdsl.NewDuration().String(conf.MaxAge))
	}
	if conf.MaxDocs > 0 {
		cond.MaxDocs(int64(conf.MaxDocs))
	}
	if conf.MaxShardSize > 0 {
		bs := esdsl.NewByteSize()
		bs.Int64(int64(conf.MaxShardSize))
		cond.MaxPrimaryShardSize(bs)
	}
	if conf.MaxShardDocs > 0 {
		cond.MaxPrimaryShardDocs(int64(conf.MaxShardDocs))
	}

	return cond
}

func RolloverAlias(conf *cfg.Config, alias string) (*rollover.Response, error) {
	roll := conf.DefaultCluster.ES.Indices.Rollover(alias)

	if conf.Wait {
		roll.WaitForActiveShards("all")
	}

	if conf.DryRun {
		roll.DryRun(true)
	}

	cond := RolloverConditions(conf)

	roll.Conditions(cond)

	return roll.Do(context.Background())
}