// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// 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 <http://www.gnu.org/licenses/>.

package event

import (
	"reflect"
	"testing"
)

func TestRulesMapClone(t *testing.T) {
	rulesMapCase1 := make(RulesMap)
	rulesMapToAddCase1 := NewRulesMap([]Name{ObjectCreatedAll}, "*", TargetID{"1", "webhook"})

	rulesMapCase2 := NewRulesMap([]Name{ObjectCreatedAll}, "*", TargetID{"1", "webhook"})
	rulesMapToAddCase2 := NewRulesMap([]Name{ObjectCreatedAll}, "2010*.jpg", TargetID{"1", "webhook"})

	rulesMapCase3 := NewRulesMap([]Name{ObjectCreatedAll}, "2010*.jpg", TargetID{"1", "webhook"})
	rulesMapToAddCase3 := NewRulesMap([]Name{ObjectCreatedAll}, "*", TargetID{"1", "webhook"})

	testCases := []struct {
		rulesMap      RulesMap
		rulesMapToAdd RulesMap
	}{
		{rulesMapCase1, rulesMapToAddCase1},
		{rulesMapCase2, rulesMapToAddCase2},
		{rulesMapCase3, rulesMapToAddCase3},
	}

	for i, testCase := range testCases {
		result := testCase.rulesMap.Clone()

		if !reflect.DeepEqual(result, testCase.rulesMap) {
			t.Fatalf("test %v: result: expected: %v, got: %v", i+1, testCase.rulesMap, result)
		}

		result.Add(testCase.rulesMapToAdd)
		if reflect.DeepEqual(result, testCase.rulesMap) {
			t.Fatalf("test %v: result: expected: not equal, got: equal", i+1)
		}
	}
}

func TestRulesMapAdd(t *testing.T) {
	rulesMapCase1 := make(RulesMap)
	rulesMapToAddCase1 := make(RulesMap)
	expectedResultCase1 := make(RulesMap)

	rulesMapCase2 := make(RulesMap)
	rulesMapToAddCase2 := NewRulesMap([]Name{ObjectCreatedAll}, "*", TargetID{"1", "webhook"})
	expectedResultCase2 := NewRulesMap([]Name{ObjectCreatedAll}, "*", TargetID{"1", "webhook"})

	rulesMapCase3 := NewRulesMap([]Name{ObjectCreatedAll}, "*", TargetID{"1", "webhook"})
	rulesMapToAddCase3 := NewRulesMap([]Name{ObjectCreatedAll}, "2010*.jpg", TargetID{"1", "webhook"})
	expectedResultCase3 := NewRulesMap([]Name{ObjectCreatedAll}, "2010*.jpg", TargetID{"1", "webhook"})
	expectedResultCase3.add([]Name{ObjectCreatedAll}, "*", TargetID{"1", "webhook"})

	testCases := []struct {
		rulesMap       RulesMap
		rulesMapToAdd  RulesMap
		expectedResult RulesMap
	}{
		{rulesMapCase1, rulesMapToAddCase1, expectedResultCase1},
		{rulesMapCase2, rulesMapToAddCase2, expectedResultCase2},
		{rulesMapCase3, rulesMapToAddCase3, expectedResultCase3},
	}

	for i, testCase := range testCases {
		testCase.rulesMap.Add(testCase.rulesMapToAdd)

		if !reflect.DeepEqual(testCase.rulesMap, testCase.expectedResult) {
			t.Fatalf("test %v: result: expected: %v, got: %v", i+1, testCase.expectedResult, testCase.rulesMap)
		}
	}
}

func TestRulesMapRemove(t *testing.T) {
	rulesMapCase1 := make(RulesMap)
	rulesMapToAddCase1 := make(RulesMap)
	expectedResultCase1 := make(RulesMap)

	rulesMapCase2 := NewRulesMap([]Name{ObjectCreatedAll}, "*", TargetID{"1", "webhook"})
	rulesMapToAddCase2 := NewRulesMap([]Name{ObjectCreatedAll}, "*", TargetID{"1", "webhook"})
	expectedResultCase2 := make(RulesMap)

	rulesMapCase3 := NewRulesMap([]Name{ObjectCreatedAll}, "2010*.jpg", TargetID{"1", "webhook"})
	rulesMapCase3.add([]Name{ObjectCreatedAll}, "*", TargetID{"1", "webhook"})
	rulesMapToAddCase3 := NewRulesMap([]Name{ObjectCreatedAll}, "2010*.jpg", TargetID{"1", "webhook"})
	expectedResultCase3 := NewRulesMap([]Name{ObjectCreatedAll}, "*", TargetID{"1", "webhook"})

	testCases := []struct {
		rulesMap       RulesMap
		rulesMapToAdd  RulesMap
		expectedResult RulesMap
	}{
		{rulesMapCase1, rulesMapToAddCase1, expectedResultCase1},
		{rulesMapCase2, rulesMapToAddCase2, expectedResultCase2},
		{rulesMapCase3, rulesMapToAddCase3, expectedResultCase3},
	}

	for i, testCase := range testCases {
		testCase.rulesMap.Remove(testCase.rulesMapToAdd)

		if !reflect.DeepEqual(testCase.rulesMap, testCase.expectedResult) {
			t.Fatalf("test %v: result: expected: %v, got: %v", i+1, testCase.expectedResult, testCase.rulesMap)
		}
	}
}

func TestRulesMapMatch(t *testing.T) {
	rulesMapCase1 := make(RulesMap)

	rulesMapCase2 := NewRulesMap([]Name{ObjectCreatedAll}, "*", TargetID{"1", "webhook"})

	rulesMapCase3 := NewRulesMap([]Name{ObjectCreatedAll}, "2010*.jpg", TargetID{"1", "webhook"})

	rulesMapCase4 := NewRulesMap([]Name{ObjectCreatedAll}, "2010*.jpg", TargetID{"1", "webhook"})
	rulesMapCase4.add([]Name{ObjectCreatedAll}, "*", TargetID{"2", "amqp"})

	testCases := []struct {
		rulesMap       RulesMap
		eventName      Name
		objectName     string
		expectedResult TargetIDSet
	}{
		{rulesMapCase1, ObjectCreatedPut, "2010/photo.jpg", NewTargetIDSet()},
		{rulesMapCase2, ObjectCreatedPut, "2010/photo.jpg", NewTargetIDSet(TargetID{"1", "webhook"})},
		{rulesMapCase3, ObjectCreatedPut, "2000/photo.png", NewTargetIDSet()},
		{rulesMapCase4, ObjectCreatedPut, "2000/photo.png", NewTargetIDSet(TargetID{"2", "amqp"})},
	}

	for i, testCase := range testCases {
		result := testCase.rulesMap.Match(testCase.eventName, testCase.objectName)

		if !reflect.DeepEqual(result, testCase.expectedResult) {
			t.Fatalf("test %v: result: expected: %v, got: %v", i+1, testCase.expectedResult, result)
		}
	}
}

func TestNewRulesMap(t *testing.T) {
	rulesMapCase1 := make(RulesMap)
	rulesMapCase1.add([]Name{ObjectAccessedGet, ObjectAccessedHead, ObjectAccessedGetRetention, ObjectAccessedGetLegalHold},
		"*", TargetID{"1", "webhook"})

	rulesMapCase2 := make(RulesMap)
	rulesMapCase2.add([]Name{ObjectAccessedGet, ObjectAccessedHead,
		ObjectCreatedPut, ObjectAccessedGetRetention, ObjectAccessedGetLegalHold}, "*", TargetID{"1", "webhook"})

	rulesMapCase3 := make(RulesMap)
	rulesMapCase3.add([]Name{ObjectRemovedDelete}, "2010*.jpg", TargetID{"1", "webhook"})

	testCases := []struct {
		eventNames     []Name
		pattern        string
		targetID       TargetID
		expectedResult RulesMap
	}{
		{[]Name{ObjectAccessedAll}, "", TargetID{"1", "webhook"}, rulesMapCase1},
		{[]Name{ObjectAccessedAll, ObjectCreatedPut}, "", TargetID{"1", "webhook"}, rulesMapCase2},
		{[]Name{ObjectRemovedDelete}, "2010*.jpg", TargetID{"1", "webhook"}, rulesMapCase3},
	}

	for i, testCase := range testCases {
		result := NewRulesMap(testCase.eventNames, testCase.pattern, testCase.targetID)

		if !reflect.DeepEqual(result, testCase.expectedResult) {
			t.Errorf("test %v: result: expected: %v, got: %v", i+1, testCase.expectedResult, result)
		}
	}
}