//go:build integration
// +build integration

/*
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 ees

import (
	"errors"
	"path"
	"testing"
	"time"

	"github.com/cgrates/birpc"
	"github.com/cgrates/birpc/context"
	"github.com/cgrates/birpc/jsonrpc"
	"github.com/cgrates/cgrates/config"
	"github.com/cgrates/cgrates/engine"
	"github.com/cgrates/cgrates/utils"
	amqp "github.com/rabbitmq/amqp091-go"
)

var (
	amqpConfDir    string
	amqpCfgPath    string
	amqpCfg        *config.CGRConfig
	amqpRPC        *birpc.Client
	amqpExportPath string

	sTestsAMQP = []func(t *testing.T){
		testCreateDirectory,
		testAMQPLoadConfig,
		testAMQPResetDataDB,
		testAMQPResetStorDb,
		testAMQPStartEngine,
		testAMQPRPCConn,

		testAMQPExportEvent,
		testAMQPVerifyExport,

		testStopCgrEngine,
		testCleanDirectory,
	}
)

func TestAMQPExport(t *testing.T) {
	amqpConfDir = "ees"
	for _, stest := range sTestsAMQP {
		t.Run(amqpConfDir, stest)
	}
}

func testAMQPLoadConfig(t *testing.T) {
	var err error
	amqpCfgPath = path.Join(*utils.DataDir, "conf", "samples", amqpConfDir)
	if amqpCfg, err = config.NewCGRConfigFromPath(amqpCfgPath); err != nil {
		t.Error(err)
	}
	for _, value := range amqpCfg.EEsCfg().Exporters {
		if value.ID == "AMQPExporter" {
			amqpExportPath = value.ExportPath
		}
	}
}

func testAMQPResetDataDB(t *testing.T) {
	if err := engine.InitDataDB(amqpCfg); err != nil {
		t.Fatal(err)
	}
}

func testAMQPResetStorDb(t *testing.T) {
	if err := engine.InitStorDb(amqpCfg); err != nil {
		t.Fatal(err)
	}
}

func testAMQPStartEngine(t *testing.T) {
	if _, err := engine.StopStartEngine(amqpCfgPath, *utils.WaitRater); err != nil {
		t.Fatal(err)
	}
}

func testStopCgrEngine(t *testing.T) {
	if err := engine.KillEngine(100); err != nil {
		t.Error(err)
	}
}

func testAMQPRPCConn(t *testing.T) {
	var err error
	amqpRPC, err = newRPCClient(amqpCfg.ListenCfg())
	if err != nil {
		t.Fatal(err)
	}
}

func testAMQPExportEvent(t *testing.T) {
	ev := &engine.CGREventWithEeIDs{
		EeIDs: []string{"AMQPExporter"},
		CGREvent: &utils.CGREvent{
			Tenant: "cgrates.org",
			ID:     "voiceEvent",
			Time:   utils.TimePointer(time.Now()),
			Event: map[string]any{
				utils.CGRID:        utils.Sha1("dsafdsaf", time.Unix(1383813745, 0).UTC().String()),
				utils.ToR:          utils.MetaVoice,
				utils.OriginID:     "dsafdsaf",
				utils.OriginHost:   "192.168.1.1",
				utils.RequestType:  utils.MetaRated,
				utils.Tenant:       "cgrates.org",
				utils.Category:     "call",
				utils.AccountField: "1001",
				utils.Subject:      "1001",
				utils.Destination:  "1002",
				utils.SetupTime:    time.Unix(1383813745, 0).UTC(),
				utils.AnswerTime:   time.Unix(1383813746, 0).UTC(),
				utils.Usage:        10 * time.Second,
				utils.RunID:        utils.MetaDefault,
				utils.Cost:         1.01,
			},
		},
	}

	var reply map[string]utils.MapStorage
	if err := amqpRPC.Call(context.Background(), utils.EeSv1ProcessEvent, ev, &reply); err != nil {
		t.Error(err)
	}

	time.Sleep(1 * time.Second)
}

func testAMQPVerifyExport(t *testing.T) {
	conn, err := amqp.Dial(amqpExportPath)
	if err != nil {
		t.Fatal(err)
	}
	defer conn.Close()
	ch, err := conn.Channel()
	if err != nil {
		t.Fatal(err)
	}
	defer ch.Close()
	q, err := ch.QueueDeclare("cgrates_cdrs", true, false, false, false, nil)
	if err != nil {
		t.Fatal(err)
	}
	msgs, err := ch.Consume(q.Name, utils.EmptyString, true, false, false, false, nil)
	if err != nil {
		t.Fatal(err)
	}
	expCDR := `{"Account":"1001","AnswerTime":"2013-11-07T08:42:26Z","CGRID":"dbafe9c8614c785a65aabd116dd3959c3c56f7f6","Category":"call","Cost":"1.01","Destination":"1002","ExporterID":"AMQPExporter","OriginID":"dsafdsaf","RequestType":"*rated","RunID":"*default","SetupTime":"2013-11-07T08:42:25Z","Subject":"1001","Tenant":"cgrates.org","ToR":"*voice","Usage":"10000000000"}`
	select {
	case d := <-msgs:
		rcvCDR := string(d.Body)
		if rcvCDR != expCDR {
			t.Errorf("expected: <%+v>, \nreceived: <%+v>", expCDR, rcvCDR)
		}
	case <-time.After(100 * time.Millisecond):
		t.Error("No message received from RabbitMQ")
	}

	// Delete the queue after verifying if the export was successful
	_, err = ch.QueueDelete("cgrates_cdrs", false, false, true)
	if err != nil {
		t.Error(err)
	}
}

func newRPCClient(cfg *config.ListenCfg) (c *birpc.Client, err error) {
	switch *utils.Encoding {
	case utils.MetaJSON:
		return jsonrpc.Dial(utils.TCP, cfg.RPCJSONListen)
	case utils.MetaGOB:
		return birpc.Dial(utils.TCP, cfg.RPCGOBListen)
	default:
		return nil, errors.New("UNSUPPORTED_RPC")
	}
}
