package store

import (
	"testing"
	"time"

	"github.com/TwinProduction/gatus/core"
	"github.com/TwinProduction/gatus/storage/store/database"
	"github.com/TwinProduction/gatus/storage/store/memory"
	"github.com/TwinProduction/gatus/storage/store/paging"
)

var (
	firstCondition  = core.Condition("[STATUS] == 200")
	secondCondition = core.Condition("[RESPONSE_TIME] < 500")
	thirdCondition  = core.Condition("[CERTIFICATE_EXPIRATION] < 72h")

	testService = core.Service{
		Name:                    "name",
		Group:                   "group",
		URL:                     "https://example.org/what/ever",
		Method:                  "GET",
		Body:                    "body",
		Interval:                30 * time.Second,
		Conditions:              []*core.Condition{&firstCondition, &secondCondition, &thirdCondition},
		Alerts:                  nil,
		Insecure:                false,
		NumberOfFailuresInARow:  0,
		NumberOfSuccessesInARow: 0,
	}
	testSuccessfulResult = core.Result{
		Hostname:              "example.org",
		IP:                    "127.0.0.1",
		HTTPStatus:            200,
		Errors:                nil,
		Connected:             true,
		Success:               true,
		Duration:              150 * time.Millisecond,
		CertificateExpiration: 10 * time.Hour,
		ConditionResults: []*core.ConditionResult{
			{
				Condition: "[STATUS] == 200",
				Success:   true,
			},
			{
				Condition: "[RESPONSE_TIME] < 500",
				Success:   true,
			},
			{
				Condition: "[CERTIFICATE_EXPIRATION] < 72h",
				Success:   true,
			},
		},
	}
	testUnsuccessfulResult = core.Result{
		Hostname:              "example.org",
		IP:                    "127.0.0.1",
		HTTPStatus:            200,
		Errors:                []string{"error-1", "error-2"},
		Connected:             true,
		Success:               false,
		Duration:              750 * time.Millisecond,
		CertificateExpiration: 10 * time.Hour,
		ConditionResults: []*core.ConditionResult{
			{
				Condition: "[STATUS] == 200",
				Success:   true,
			},
			{
				Condition: "[RESPONSE_TIME] < 500",
				Success:   false,
			},
			{
				Condition: "[CERTIFICATE_EXPIRATION] < 72h",
				Success:   false,
			},
		},
	}
)

func BenchmarkStore_GetAllServiceStatuses(b *testing.B) {
	memoryStore, err := memory.NewStore("")
	if err != nil {
		b.Fatal("failed to create store:", err.Error())
	}
	databaseStore, err := database.NewStore("sqlite", b.TempDir()+"/BenchmarkStore_GetAllServiceStatuses.db")
	if err != nil {
		b.Fatal("failed to create store:", err.Error())
	}
	defer databaseStore.Close()
	type Scenario struct {
		Name     string
		Store    Store
		Parallel bool
	}
	scenarios := []Scenario{
		{
			Name:     "memory",
			Store:    memoryStore,
			Parallel: false,
		},
		{
			Name:     "memory-parallel",
			Store:    memoryStore,
			Parallel: true,
		},
		{
			Name:     "database",
			Store:    databaseStore,
			Parallel: false,
		},
		{
			Name:     "database-parallel",
			Store:    databaseStore,
			Parallel: true,
		},
	}
	for _, scenario := range scenarios {
		scenario.Store.Insert(&testService, &testSuccessfulResult)
		scenario.Store.Insert(&testService, &testUnsuccessfulResult)
		b.Run(scenario.Name, func(b *testing.B) {
			if scenario.Parallel {
				b.RunParallel(func(pb *testing.PB) {
					for pb.Next() {
						scenario.Store.GetAllServiceStatuses(paging.NewServiceStatusParams().WithResults(1, 20))
					}
				})
			} else {
				for n := 0; n < b.N; n++ {
					scenario.Store.GetAllServiceStatuses(paging.NewServiceStatusParams().WithResults(1, 20))
				}
			}
			b.ReportAllocs()
		})
		scenario.Store.Clear()
	}
}

func BenchmarkStore_Insert(b *testing.B) {
	memoryStore, err := memory.NewStore("")
	if err != nil {
		b.Fatal("failed to create store:", err.Error())
	}
	databaseStore, err := database.NewStore("sqlite", b.TempDir()+"/BenchmarkStore_Insert.db")
	if err != nil {
		b.Fatal("failed to create store:", err.Error())
	}
	defer databaseStore.Close()
	type Scenario struct {
		Name     string
		Store    Store
		Parallel bool
	}
	scenarios := []Scenario{
		{
			Name:     "memory",
			Store:    memoryStore,
			Parallel: false,
		},
		{
			Name:     "memory-parallel",
			Store:    memoryStore,
			Parallel: true,
		},
		{
			Name:     "database",
			Store:    databaseStore,
			Parallel: false,
		},
		{
			Name:     "database-parallel",
			Store:    databaseStore,
			Parallel: false,
		},
	}
	for _, scenario := range scenarios {
		b.Run(scenario.Name, func(b *testing.B) {
			if scenario.Parallel {
				b.RunParallel(func(pb *testing.PB) {
					n := 0
					for pb.Next() {
						var result core.Result
						if n%10 == 0 {
							result = testUnsuccessfulResult
						} else {
							result = testSuccessfulResult
						}
						result.Timestamp = time.Now()
						scenario.Store.Insert(&testService, &result)
						n++
					}
				})
			} else {
				for n := 0; n < b.N; n++ {
					var result core.Result
					if n%10 == 0 {
						result = testUnsuccessfulResult
					} else {
						result = testSuccessfulResult
					}
					result.Timestamp = time.Now()
					scenario.Store.Insert(&testService, &result)
				}
			}
			b.ReportAllocs()
			scenario.Store.Clear()
		})
	}
}