/*
   Copyright (c) 2019 AT&T Intellectual Property.
   Copyright (c) 2018-2019 Nokia.

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/

package sdlgo_test

import (
	"fmt"
	"strconv"
	"strings"
	"testing"

	"gerrit.o-ran-sc.org/r/ric-plt/sdlgo"
)

type singleBenchmark struct {
	key       string
	keySize   int
	valueSize int
}

type multiBenchmark struct {
	keyBase   string
	keyCount  int
	keySize   int
	valueSize int
}

func (bm singleBenchmark) String(oper string) string {
	return fmt.Sprintf("op = %s key=%d value=%d", oper, bm.keySize, bm.valueSize)
}

func (bm multiBenchmark) String(oper string) string {
	return fmt.Sprintf("op = %s keycnt=%d key=%d value=%d", oper, bm.keyCount, bm.keySize, bm.valueSize)
}
func BenchmarkSet(b *testing.B) {
	benchmarks := []singleBenchmark{
		{"a", 10, 64},
		{"b", 10, 1024},
		{"c", 10, 64 * 1024},
		{"d", 10, 1024 * 1024},
		{"e", 10, 10 * 1024 * 1024},

		{"f", 100, 64},
		{"g", 100, 1024},
		{"h", 100, 64 * 1024},
		{"i", 100, 1024 * 1024},
		{"j", 100, 10 * 1024 * 1024},
	}

	for _, bm := range benchmarks {
		b.Run(bm.String("set"), func(b *testing.B) {
			key := strings.Repeat(bm.key, bm.keySize)
			value := strings.Repeat("1", bm.valueSize)
			sdl := sdlgo.NewSdlInstance("namespace", sdlgo.NewDatabase())

			b.ResetTimer()
			b.RunParallel(func(pb *testing.PB) {
				for pb.Next() {
					err := sdl.Set(key, value)
					if err != nil {
						b.Fatal(err)
					}
				}
			})
		})
	}
}

func BenchmarkGet(b *testing.B) {
	benchmarks := []singleBenchmark{
		{"a", 10, 64},
		{"b", 10, 1024},
		{"c", 10, 64 * 1024},
		{"d", 10, 1024 * 1024},
		{"e", 10, 10 * 1024 * 1024},

		{"f", 100, 64},
		{"g", 100, 1024},
		{"h", 100, 64 * 1024},
		{"i", 100, 1024 * 1024},
		{"j", 100, 10 * 1024 * 1024},
	}

	for _, bm := range benchmarks {
		b.Run(bm.String("Get"), func(b *testing.B) {
			key := strings.Repeat(bm.key, bm.keySize)
			value := strings.Repeat("1", bm.valueSize)
			sdl := sdlgo.NewSdlInstance("namespace", sdlgo.NewDatabase())
			if err := sdl.Set(key, value); err != nil {
				b.Fatal(err)
			}
			b.ResetTimer()
			b.RunParallel(func(pb *testing.PB) {
				for pb.Next() {
					_, err := sdl.Get([]string{key})
					if err != nil {
						b.Fatal(err)
					}
				}
			})
		})
	}
}

func BenchmarkMultiSet(b *testing.B) {
	benchmarks := []multiBenchmark{
		{"a", 2, 10, 64},
		{"b", 10, 10, 64},
		{"c", 100, 10, 64},
		{"d", 1000, 10, 64},
		{"e", 5000, 10, 64},

		{"f", 2, 100, 64},
		{"g", 10, 100, 64},
		{"h", 100, 100, 64},
		{"i", 1000, 100, 64},
		{"j", 5000, 100, 64},
	}

	for _, bm := range benchmarks {
		b.Run(bm.String("mset"), func(b *testing.B) {
			sdl := sdlgo.NewSdlInstance("namespace", sdlgo.NewDatabase())
			value := strings.Repeat("1", bm.valueSize)
			keyVals := make([]string, 0)
			for i := 0; i < bm.keyCount; i++ {
				key := strings.Repeat(bm.keyBase+strconv.Itoa(i), bm.keySize)
				keyVals = append(keyVals, key, value)
			}
			b.ResetTimer()
			b.RunParallel(func(pb *testing.PB) {
				for pb.Next() {
					err := sdl.Set(keyVals)
					if err != nil {
						b.Fatal(err)
					}
				}
			})
		})
	}
}

func BenchmarkMultiGet(b *testing.B) {
	benchmarks := []multiBenchmark{
		{"a", 2, 10, 64},
		{"b", 10, 10, 64},
		{"c", 100, 10, 64},
		{"d", 1000, 10, 64},
		{"e", 5000, 10, 64},

		{"f", 2, 100, 64},
		{"g", 10, 100, 64},
		{"h", 100, 100, 64},
		{"i", 1000, 100, 64},
		{"j", 5000, 100, 64},
	}

	for _, bm := range benchmarks {
		b.Run(bm.String("gset"), func(b *testing.B) {
			sdl := sdlgo.NewSdlInstance("namespace", sdlgo.NewDatabase())
			keyVals := make([]string, 0)
			for i := 0; i < bm.keyCount; i++ {
				key := strings.Repeat(bm.keyBase+strconv.Itoa(i), bm.keySize)
				keyVals = append(keyVals, key)
			}
			b.ResetTimer()
			b.RunParallel(func(pb *testing.PB) {
				for pb.Next() {
					_, err := sdl.Get(keyVals)
					if err != nil {
						b.Fatal(err)
					}
				}
			})
		})
	}
}