// Copyright (C) 2019-2020 Zilliz. All rights reserved.
//
// 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.

package tsoutil

import (
	"testing"
	"time"

	"github.com/milvus-io/milvus/internal/log"
	"github.com/milvus-io/milvus/internal/util/typeutil"
	"github.com/stretchr/testify/assert"
	"go.uber.org/zap"
)

func TestParseHybridTs(t *testing.T) {
	var ts uint64 = 426152581543231492
	physical, logical := ParseHybridTs(ts)
	physicalTime := time.Unix(physical/1000, physical%1000*time.Millisecond.Nanoseconds())
	log.Debug("TestParseHybridTs",
		zap.Int64("physical", physical),
		zap.Int64("logical", logical),
		zap.Any("physical time", physicalTime))
}

func Test_Tso(t *testing.T) {
	t.Run("test ComposeTSByTime", func(t *testing.T) {
		physical := time.Now()
		logical := int64(1000)
		timestamp := ComposeTSByTime(physical, logical)
		pRes, lRes := ParseTS(timestamp)
		assert.Equal(t, physical.Unix(), pRes.Unix())
		assert.Equal(t, uint64(logical), lRes)
	})

	t.Run("test GetCurrentTime", func(t *testing.T) {
		curTime := GetCurrentTime()
		p, l := ParseTS(curTime)
		subTime := time.Since(p)
		assert.Less(t, subTime, time.Millisecond)
		assert.Equal(t, typeutil.ZeroTimestamp, l)
	})
}

func TestCalculateDuration(t *testing.T) {
	now := time.Now()
	ts1 := ComposeTSByTime(now, 0)
	durationInMilliSecs := int64(20 * 1000)
	ts2 := ComposeTSByTime(now.Add(time.Duration(durationInMilliSecs)*time.Millisecond), 0)
	diff := CalculateDuration(ts2, ts1)
	assert.Equal(t, durationInMilliSecs, diff)
}