/*
Real-time Online/Offline Charging System (OCS) for Telecom & ISP environments
Copyright (C) ITsysCOM GmbH

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 engine

import (
	"bytes"
	"log"
	"os"
	"strings"
	"testing"
	"time"

	"github.com/cgrates/cgrates/utils"
)

func TestBalanceSortPrecision(t *testing.T) {
	mb1 := &Balance{Weight: 1, precision: 2}
	mb2 := &Balance{Weight: 2, precision: 1}
	var bs Balances
	bs = append(bs, mb2, mb1)
	bs.Sort()
	if bs[0] != mb1 || bs[1] != mb2 {
		t.Error("Buckets not sorted by weight!")
	}
}

func TestBalanceSortPrecisionWeightEqual(t *testing.T) {
	mb1 := &Balance{Weight: 1, precision: 2}
	mb2 := &Balance{Weight: 1, precision: 1}
	var bs Balances
	bs = append(bs, mb2, mb1)
	bs.Sort()
	if bs[0] != mb1 || bs[1] != mb2 {
		t.Error("Buckets not sorted by precision!")
	}
}

func TestBalanceSortPrecisionWeightGreater(t *testing.T) {
	mb1 := &Balance{Weight: 2, precision: 2}
	mb2 := &Balance{Weight: 1, precision: 1}
	var bs Balances
	bs = append(bs, mb2, mb1)
	bs.Sort()
	if bs[0] != mb1 || bs[1] != mb2 {
		t.Error("Buckets not sorted by precision!")
	}
}

func TestBalanceSortWeight(t *testing.T) {
	mb1 := &Balance{Weight: 2, precision: 1}
	mb2 := &Balance{Weight: 1, precision: 1}
	var bs Balances
	bs = append(bs, mb2, mb1)
	bs.Sort()
	if bs[0] != mb1 || bs[1] != mb2 {
		t.Error("Buckets not sorted by precision!")
	}
}

func TestBalanceSortWeight2(t *testing.T) {
	bs := Balances{
		&Balance{ID: "B1", Weight: 2, precision: 1},
		&Balance{ID: "B2", Weight: 1, precision: 1},
	}
	bs.Sort()
	if bs[0].ID != "B1" && bs[1].ID != "B2" {
		t.Error("Buckets not sorted by precision!")
	}
}

func TestBalanceSortWeight3(t *testing.T) {
	bs := Balances{
		&Balance{ID: "B1", Weight: 2, Value: 10.0},
		&Balance{ID: "B2", Weight: 4, Value: 10.0},
	}
	bs.Sort()
	if bs[0].ID != "B2" && bs[1].ID != "B1" {
		t.Error(utils.ToJSON(bs))
	}
}

func TestBalanceSortWeightLess(t *testing.T) {
	mb1 := &Balance{Weight: 1, precision: 1}
	mb2 := &Balance{Weight: 2, precision: 1}
	var bs Balances
	bs = append(bs, mb2, mb1)
	bs.Sort()
	if bs[0] != mb2 || bs[1] != mb1 {
		t.Error("Buckets not sorted by precision!")
	}
}

func TestBalanceEqual(t *testing.T) {
	mb1 := &Balance{Weight: 1, precision: 1, RatingSubject: "1", DestinationIDs: utils.StringMap{}}
	mb2 := &Balance{Weight: 1, precision: 1, RatingSubject: "1", DestinationIDs: utils.StringMap{}}
	mb3 := &Balance{Weight: 1, precision: 1, RatingSubject: "2", DestinationIDs: utils.StringMap{}}
	if !mb1.Equal(mb2) || mb2.Equal(mb3) {
		t.Error("Equal failure!", mb1 == mb2, mb3)
	}
}

func TestBalanceMatchFilter(t *testing.T) {
	mb1 := &Balance{Weight: 1, precision: 1, RatingSubject: "1", DestinationIDs: utils.StringMap{}}
	mb2 := &BalanceFilter{Weight: utils.Float64Pointer(1), RatingSubject: nil, DestinationIDs: nil}
	if !mb1.MatchFilter(mb2, "", false, false) {
		t.Errorf("Match filter failure: %+v == %+v", mb1, mb2)
	}

	mb1.Uuid, mb2.Uuid = "id", utils.StringPointer("id")
	if !mb1.MatchFilter(mb2, "", false, false) {
		t.Errorf("Match filter failure: %+v == %+v", mb1, mb2)
	}

}

func TestBalanceMatchFilterEmpty(t *testing.T) {
	mb1 := &Balance{Weight: 1, precision: 1, RatingSubject: "1", DestinationIDs: utils.StringMap{}}
	mb2 := &BalanceFilter{}
	if !mb1.MatchFilter(mb2, "", false, false) {
		t.Errorf("Match filter failure: %+v == %+v", mb1, mb2)
	}
}

func TestBalanceMatchFilterId(t *testing.T) {
	mb1 := &Balance{ID: "T1", Weight: 2, precision: 2, RatingSubject: "2", DestinationIDs: utils.NewStringMap("NAT")}
	mb2 := &BalanceFilter{ID: utils.StringPointer("T1"), Weight: utils.Float64Pointer(1), RatingSubject: utils.StringPointer("1"), DestinationIDs: nil}
	if !mb1.MatchFilter(mb2, "", false, false) {
		t.Errorf("Match filter failure: %+v == %+v", mb1, mb2)
	}
}

func TestBalanceMatchFilterDiffId(t *testing.T) {
	mb1 := &Balance{ID: "T1", Weight: 1, precision: 1, RatingSubject: "1", DestinationIDs: utils.StringMap{}}
	mb2 := &BalanceFilter{ID: utils.StringPointer("T2"), Weight: utils.Float64Pointer(1), RatingSubject: utils.StringPointer("1"), DestinationIDs: nil}
	if mb1.MatchFilter(mb2, "", false, false) {
		t.Errorf("Match filter failure: %+v != %+v", mb1, mb2)
	}
}

func TestBalanceClone(t *testing.T) {
	var mb1 *Balance
	if mb2 := mb1.Clone(); mb2 != nil {
		t.Errorf("Balance should be %v", mb2)
	}

	mb1 = &Balance{Value: 1, Weight: 2, RatingSubject: "test", DestinationIDs: utils.NewStringMap("5")}
	mb2 := mb1.Clone()
	if mb1 == mb2 || !mb1.Equal(mb2) {
		t.Errorf("Cloning failure: \n%+v\n%+v", mb1, mb2)
	}
}

func TestBalanceMatchActionTriggerId(t *testing.T) {
	at := &ActionTrigger{Balance: &BalanceFilter{ID: utils.StringPointer("test")}}
	b := &Balance{ID: "test"}
	if !b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
	b.ID = "test1"
	if b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
	b.ID = ""
	if b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
	b.ID = "test"
	at.Balance.ID = nil
	if !b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
}

func TestBalanceMatchActionTriggerDestination(t *testing.T) {
	at := &ActionTrigger{Balance: &BalanceFilter{DestinationIDs: utils.StringMapPointer(utils.NewStringMap("test"))}}
	b := &Balance{DestinationIDs: utils.NewStringMap("test")}
	if !b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
	b.DestinationIDs = utils.NewStringMap("test1")
	if b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
	b.DestinationIDs = utils.NewStringMap("")
	if b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
	b.DestinationIDs = utils.NewStringMap("test")
	at.Balance.DestinationIDs = nil
	if !b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
}

func TestBalanceMatchActionTriggerWeight(t *testing.T) {
	at := &ActionTrigger{Balance: &BalanceFilter{Weight: utils.Float64Pointer(1)}}
	b := &Balance{Weight: 1}
	if !b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
	b.Weight = 2
	if b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
	b.Weight = 0
	if b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
	b.Weight = 1
	at.Balance.Weight = nil
	if !b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
}

func TestBalanceMatchActionTriggerRatingSubject(t *testing.T) {

	at := &ActionTrigger{Balance: &BalanceFilter{RatingSubject: utils.StringPointer("test")}}
	b := &Balance{RatingSubject: "test"}
	if !b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
	b.RatingSubject = "test1"
	if b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
	b.RatingSubject = ""
	if b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
	b.RatingSubject = "test"
	at.Balance.RatingSubject = nil
	if !b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
}

func TestBalanceMatchActionTriggerSharedGroup(t *testing.T) {
	at := &ActionTrigger{Balance: &BalanceFilter{SharedGroups: utils.StringMapPointer(utils.NewStringMap("test"))}}
	b := &Balance{SharedGroups: utils.NewStringMap("test")}
	if !b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
	b.SharedGroups = utils.NewStringMap("test1")
	if b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
	b.SharedGroups = utils.NewStringMap("")
	if b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
	b.SharedGroups = utils.NewStringMap("test")
	at.Balance.SharedGroups = nil
	if !b.MatchActionTrigger(at) {
		t.Errorf("Error matching action trigger: %+v %+v", b, at)
	}
}

func TestBalanceIsDefault(t *testing.T) {
	b := &Balance{Weight: 0}
	if b.IsDefault() {
		t.Errorf("Balance should not be default: %+v", b)
	}
	b = &Balance{ID: utils.MetaDefault}
	if !b.IsDefault() {
		t.Errorf("Balance should be default: %+v", b)
	}
}

func TestBalanceIsExpiredAt(t *testing.T) {
	//expiration date is 0
	balance := &Balance{}
	var date2 time.Time
	if rcv := balance.IsExpiredAt(date2); rcv {
		t.Errorf("Expecting: false , received: %+v", rcv)
	}
	//expiration date before time t
	balance.ExpirationDate = time.Date(2020, time.April, 18, 23, 0, 3, 0, time.UTC)
	date2 = time.Date(2020, time.April, 18, 23, 0, 4, 0, time.UTC)
	if rcv := balance.IsExpiredAt(date2); !rcv {
		t.Errorf("Expecting: true , received: %+v", rcv)
	}
	//expiration date after time t
	date2 = time.Date(2020, time.April, 18, 23, 0, 2, 0, time.UTC)
	if rcv := balance.IsExpiredAt(date2); rcv {
		t.Errorf("Expecting: false , received: %+v", rcv)
	}
	//time t = 0
	var date3 time.Time
	if rcv := balance.IsExpiredAt(date3); rcv {
		t.Errorf("Expecting: false , received: %+v", rcv)
	}

}

func TestBalanceAsInterface(t *testing.T) {

	b := &Balance{
		Uuid:           "uuid",
		ID:             "id",
		Value:          2.21,
		ExpirationDate: time.Date(2022, 11, 22, 9, 0, 0, 0, time.UTC),
		Weight:         2.88,
		DestinationIDs: utils.StringMap{
			"destId1": true,
			"destId2": true,
		},
		RatingSubject: "rating",
		Categories: utils.StringMap{
			"ctg1": true,
			"ctg2": false,
		},
		SharedGroups: utils.StringMap{
			"shgp1": false,
			"shgp2": true,
		},
		Timings: []*RITiming{
			{
				ID:    "id",
				Years: utils.Years{2, 3},
			},
		},
		TimingIDs: utils.StringMap{
			"timingid1": true,
			"timingid2": false,
		},
		Factors: ValueFactors{
			"factor1": 2.21,
			"factor2": 1.34,
		},
	}

	if _, err := b.FieldAsInterface([]string{}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{"value"}); err == nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{"DestinationIDs[destId1]", "secondVal"}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{"Categories[ctg1]", "secondVal"}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{"SharedGroups[shgp1]", "secondVal"}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{"TimingIDs[timingid1]", "secondVal"}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{"Timings[zero]"}); err == nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{"Timings[2]"}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{"Timings[2]", "val"}); err == nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{"Factors[factor1]", "secondVal"}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	}

	if _, err = b.FieldAsInterface([]string{"DestinationIDs[destId1]"}); err != nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{"Categories[ctg1]"}); err != nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{"SharedGroups[shgp1]"}); err != nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{"TimingIDs[timingid1]"}); err != nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{"Timings[0]"}); err != nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{"Factors[factor1]"}); err != nil {
		t.Error(err)
	}
	if _, err = b.FieldAsInterface([]string{utils.Uuid}); err != nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.ExpirationDate}); err != nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.Weight}); err != nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.DestinationIDs}); err != nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.DestinationIDs}); err != nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.RatingSubject}); err != nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.Categories}); err != nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.SharedGroups}); err != nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.Timings}); err != nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.Disabled}); err != nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.Factors}); err != nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.Blocker}); err != nil {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.TimingIDs}); err != nil {
		t.Error(err)
	}

	if _, err = b.FieldAsInterface([]string{utils.TimingIDs, "val"}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.Uuid, "val"}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.ID, "val"}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.Value, "val"}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.ExpirationDate, "val"}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.Weight, "val"}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.DestinationIDs, "val"}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.RatingSubject, "val"}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.Categories, "val"}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	} else if _, err = b.FieldAsInterface([]string{utils.SharedGroups, "val"}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	}

}

func TestValueFactorsFieldAsInterface(t *testing.T) {
	v := &ValueFactors{
		"FACT_VAL": 20.22,
	}
	if _, err := v.FieldAsInterface([]string{}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	} else if _, err = v.FieldAsInterface([]string{"TEST"}); err == nil || err != utils.ErrNotFound {
		t.Error(err)
	} else if _, err = v.FieldAsInterface([]string{"FACT_VAL"}); err != nil {
		t.Error(err)
	}
}
func TestValueFactorFieldAsString(t *testing.T) {
	v := &ValueFactors{
		"FACT_VAL": 20.22,
	}
	if _, err = v.FieldAsString([]string{"TEST"}); err == nil {
		t.Error(err)
	} else if _, err = v.FieldAsString([]string{"FACT_VAL"}); err != nil {
		t.Error(err)
	}
}

func TestBalancesHasBalance(t *testing.T) {
	bc := Balances{
		{
			Uuid:           "uuid",
			ID:             "id",
			Value:          12.22,
			ExpirationDate: time.Date(2022, 11, 1, 20, 0, 0, 0, time.UTC),
			Blocker:        true,
			Disabled:       true,
			precision:      2,
		},
		{
			Uuid:           "uuid2",
			ID:             "id2",
			Value:          133.22,
			ExpirationDate: time.Date(2023, 3, 21, 5, 0, 0, 0, time.UTC),
			Blocker:        true,
			Disabled:       true,
			precision:      2,
		},
	}
	balance := &Balance{
		Uuid:           "uuid",
		ID:             "id",
		Value:          12.22,
		ExpirationDate: time.Date(2022, 11, 1, 20, 0, 0, 0, time.UTC),
		Blocker:        true,
		Disabled:       true,
		precision:      2,
	}

	if !bc.HasBalance(balance) {
		t.Error("should be true")
	}

}

func TestGetMinutesForCredi(t *testing.T) {
	utils.Logger.SetLogLevel(4)
	utils.Logger.SetSyslog(nil)
	buf := new(bytes.Buffer)
	log.SetOutput(buf)
	defer func() {
		utils.Logger.SetLogLevel(0)
		log.SetOutput(os.Stderr)
	}()
	b := &Balance{
		Value:          20 * float64(time.Second),
		DestinationIDs: utils.NewStringMap("NAT"),
		Weight:         10, RatingSubject: "rif",
	}
	cd := &CallDescriptor{
		Category:      "postpaid",
		ToR:           utils.MetaVoice,
		Tenant:        "foehn",
		Subject:       "foehn",
		Account:       "foehn",
		Destination:   "0034678096720",
		TimeStart:     time.Date(2015, 4, 24, 7, 59, 4, 0, time.UTC),
		TimeEnd:       time.Date(2015, 4, 24, 8, 2, 0, 0, time.UTC),
		LoopIndex:     0,
		DurationIndex: 176 * time.Second,
	}
	if dur, _ := b.GetMinutesForCredit(cd, 12); dur != 0 {
		t.Error(err)
	}
	expLog := `Error getting new cost for balance subject:`
	if rcvLog := buf.String(); !strings.Contains(rcvLog, expLog) {
		t.Errorf("expected %v,received %v", utils.ToJSON(expLog), utils.ToJSON(rcvLog))
	}
}