/*
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 Affero 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 Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>
*/

package ers

import (
	"reflect"
	"testing"
	"time"

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

func TestAMQPv1ERProcessMessage(t *testing.T) {
	cfg := config.NewDefaultCGRConfig()
	rdr := &AMQPv1ER{
		cgrCfg:    cfg,
		cfgIdx:    0,
		fltrS:     new(engine.FilterS),
		rdrEvents: make(chan *erEvent, 1),
		rdrExit:   make(chan struct{}),
		rdrErr:    make(chan error, 1),
		cap:       nil,
		queueID:   "cgrates_cdrs",
	}
	expEvent := &utils.CGREvent{
		Tenant: "cgrates.org",
		Event: map[string]any{
			utils.CGRID: "testCgrId",
		},
		APIOpts: map[string]any{},
	}
	body := []byte(`{"CGRID":"testCgrId"}`)
	rdr.Config().Fields = []*config.FCTemplate{
		{
			Tag:   "CGRID",
			Type:  utils.MetaConstant,
			Value: config.NewRSRParsersMustCompile("testCgrId", utils.InfieldSep),
			Path:  "*cgreq.CGRID",
		},
	}
	rdr.Config().Fields[0].ComputePath()
	if err := rdr.processMessage(body); err != nil {
		t.Error(err)
	}
	select {
	case data := <-rdr.rdrEvents:
		expEvent.ID = data.cgrEvent.ID
		expEvent.Time = data.cgrEvent.Time
		if !reflect.DeepEqual(data.cgrEvent, expEvent) {
			t.Errorf("Expected %v but received %v", utils.ToJSON(expEvent), utils.ToJSON(data.cgrEvent))
		}
	case <-time.After(50 * time.Millisecond):
		t.Error("Time limit exceeded")
	}
}

func TestAMQPv1ERProcessMessageError1(t *testing.T) {
	cfg := config.NewDefaultCGRConfig()
	rdr := &AMQPv1ER{
		cgrCfg:    cfg,
		cfgIdx:    0,
		fltrS:     new(engine.FilterS),
		rdrEvents: make(chan *erEvent, 1),
		rdrExit:   make(chan struct{}),
		rdrErr:    make(chan error, 1),
		cap:       nil,
		queueID:   "cgrates_cdrs",
	}
	rdr.Config().Fields = []*config.FCTemplate{
		{},
	}
	body := []byte(`{"CGRID":"testCgrId"}`)
	errExpect := "unsupported type: <>"
	if err := rdr.processMessage(body); err == nil || err.Error() != errExpect {
		t.Errorf("Expected %v but received %v", errExpect, err)
	}
}

func TestAMQPv1ERProcessMessageError2(t *testing.T) {
	cfg := config.NewDefaultCGRConfig()
	data, err := engine.NewInternalDB(nil, nil, true, nil, cfg.DataDbCfg().Items)
	if err != nil {
		t.Error(err)
	}
	dm := engine.NewDataManager(data, cfg.CacheCfg(), nil)
	cfg.ERsCfg().Readers[0].ProcessedPath = ""
	fltrs := engine.NewFilterS(cfg, nil, dm)
	rdr := &AMQPv1ER{
		cgrCfg:    cfg,
		cfgIdx:    0,
		fltrS:     fltrs,
		rdrEvents: make(chan *erEvent, 1),
		rdrExit:   make(chan struct{}),
		rdrErr:    make(chan error, 1),
		cap:       nil,
		queueID:   "cgrates_cdrs",
	}
	body := []byte(`{"CGRID":"testCgrId"}`)
	rdr.Config().Filters = []string{"Filter1"}
	errExpect := "NOT_FOUND:Filter1"
	if err := rdr.processMessage(body); err == nil || err.Error() != errExpect {
		t.Errorf("Expected %v but received %v", errExpect, err)
	}

	//
	rdr.Config().Filters = []string{"*exists:~*req..Account:"}
	if err := rdr.processMessage(body); err != nil {
		t.Error(err)
	}
}

func TestAMQPv1ERProcessMessageError3(t *testing.T) {
	cfg := config.NewDefaultCGRConfig()
	rdr := &AMQPv1ER{
		cgrCfg:    cfg,
		cfgIdx:    0,
		fltrS:     new(engine.FilterS),
		rdrEvents: make(chan *erEvent, 1),
		rdrExit:   make(chan struct{}),
		rdrErr:    make(chan error, 1),
		cap:       nil,
		queueID:   "cgrates_cdrs",
	}
	body := []byte("invalid_format")
	errExpect := "invalid character 'i' looking for beginning of value"
	if err := rdr.processMessage(body); err == nil || err.Error() != errExpect {
		t.Errorf("Expected %v but received %v", errExpect, err)
	}
}