// Licensed to the LF AI & Data foundation under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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.

package balance

import (
	"context"
	"time"

	"github.com/milvus-io/milvus/internal/querycoordv2/task"
)

func CreateSegmentTasksFromPlans(ctx context.Context, checkerID int64, timeout time.Duration, plans []SegmentAssignPlan) []task.Task {
	ret := make([]task.Task, 0)
	for _, p := range plans {
		actions := make([]task.Action, 0)
		if p.To != -1 {
			action := task.NewSegmentAction(p.To, task.ActionTypeGrow, "", p.Segment.GetID())
			actions = append(actions, action)
		}
		if p.From != -1 {
			action := task.NewSegmentAction(p.From, task.ActionTypeReduce, "", p.Segment.GetID())
			actions = append(actions, action)
		}
		task := task.NewSegmentTask(
			ctx,
			timeout,
			checkerID,
			p.Segment.GetCollectionID(),
			p.ReplicaID,
			actions...,
		)
		ret = append(ret, task)
	}
	return ret
}

func CreateChannelTasksFromPlans(ctx context.Context, checkerID int64, timeout time.Duration, plans []ChannelAssignPlan) []task.Task {
	ret := make([]task.Task, 0, len(plans))
	for _, p := range plans {
		actions := make([]task.Action, 0)
		if p.To != -1 {
			action := task.NewChannelAction(p.To, task.ActionTypeGrow, p.Channel.GetChannelName())
			actions = append(actions, action)
		}
		if p.From != -1 {
			action := task.NewChannelAction(p.From, task.ActionTypeReduce, p.Channel.GetChannelName())
			actions = append(actions, action)
		}
		task := task.NewChannelTask(ctx, timeout, checkerID, p.Channel.GetCollectionID(), p.ReplicaID, actions...)
		ret = append(ret, task)
	}
	return ret
}