package bench

import (
	"context"
	"fmt"
	"go_dreamfactory/lego/core"
	"go_dreamfactory/lego/sys/mgo"
	"go_dreamfactory/sys/db"
	"log"
	"os"
	reflect "reflect"
	"testing"

	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/mongo"
	"go.mongodb.org/mongo-driver/mongo/options"
)

var mdb *db.DB

// func TestMain(m *testing.M) {
// 	imgo, err := mgo.NewSys(mgo.SetMongodbUrl("mongodb://admin:123456@10.0.0.9:27018"), mgo.SetMongodbDatabase("dreamfactory"))
// 	if err != nil {
// 		log.Fatal(err)
// 	}
// 	mdb = &db.DB{}
// 	mdb.SetMgo(imgo)

// 	defer os.Exit(m.Run())
// }

var mgoDb *mongo.Database

func TestMain(m *testing.M) {
	option := options.Client().ApplyURI("mongodb://admin:123456@10.0.0.9:27018")
	client, err := mongo.Connect(context.TODO(), option)
	if err != nil {
		log.Fatal(err)
	}
	log.Print("connect mongo success")
	mgoDb = client.Database("dreamfactory")

	//
	imgo, err := mgo.NewSys(mgo.SetMongodbUrl("mongodb://admin:123456@10.0.0.9:27018"), mgo.SetMongodbDatabase("dreamfactory"))
	if err != nil {
		log.Fatal(err)
	}
	mdb = &db.DB{}
	mdb.SetMgo(imgo)
	defer os.Exit(m.Run())
}

func BenchmarkMarsh(b *testing.B) {

	var (
		// ncpu = runtime.NumCPU()
		parallelisms = []int{2}             //平行数
		dataSizes    = []int{10, 100, 1000} //测试次数
		builders     = []TargetBuilder{
			{
				Name: "gen",
				Make: func(bench Benchmark) (Target, error) {
					return Target{
						GetHeroList: func() (any, error) {
							// heroes := GetList3(new(DBHero))
							heroes := []*DBHero{}
							GetList(&heroes)
							return heroes, nil
						},
					}, nil
				},
			},
			{
				Name: "reflect",
				Make: func(bench Benchmark) (Target, error) {
					return Target{
						GetHeroList: func() (interface{}, error) {
							heroes := []*DBHero{}
							GetListO(&heroes)
							return heroes, nil
						},
					}, nil
				},
			},
		}
	)

	RunBenchmark(b, compose(parallelisms, dataSizes, builders))
}

func GetList(data interface{}) (err error) {
	var c *mongo.Cursor
	t := reflect.TypeOf(data)
	if t.Kind() == reflect.Ptr {
		t = t.Elem()
	}

	if t.Kind() == reflect.Slice {
		t = t.Elem()
	} else {
		err = fmt.Errorf("Input param is not a slice")
	}
	sl := reflect.ValueOf(data)
	if t.Kind() == reflect.Ptr {
		sl = sl.Elem()
	}
	st := sl.Type()
	sliceType := st.Elem()
	if sliceType.Kind() == reflect.Ptr {
		sliceType = sliceType.Elem()
	}

	//query from mgo
	// if c, err = mdb.Mgo().Find(core.SqlTable("hero"), bson.M{}); err != nil {
	if c, err = mgoDb.Collection("hreo").Find(context.Background(), bson.M{}); err != nil {
		return err
	} else {
		var temp map[string]interface{} = make(map[string]interface{})

		for c.Next(context.Background()) {
			_id := c.Current.Lookup("_id").StringValue()
			if sl.Len() < sl.Cap() {
				sl.Set(sl.Slice(0, sl.Len()+1))
				elem := sl.Index(sl.Len() - 1)
				if elem.IsNil() {
					elem.Set(reflect.New(sliceType))
				}
				if err = c.Decode(elem.Elem().Addr().Interface()); err != nil {
					return
				}
				temp[_id] = elem.Elem().Addr().Interface()
				continue
			}
			elem := reflect.New(sliceType)
			sl.Set(reflect.Append(sl, elem))
			if err = c.Decode(elem.Elem().Addr().Interface()); err != nil {
				return
			}
			temp[_id] = elem.Elem().Addr().Interface()
		}
		if len(temp) == 0 { //没有数据自己返回
			return
		}
	}

	return err
}

func GetListO(data interface{}) (err error) {
	var c *mongo.Cursor
	t := reflect.TypeOf(data)
	if t.Kind() == reflect.Ptr {
		t = t.Elem()
	}

	if t.Kind() == reflect.Slice {
		t = t.Elem()
	} else {
		err = fmt.Errorf("Input param is not a slice")
	}
	sl := reflect.ValueOf(data)
	if t.Kind() == reflect.Ptr {
		sl = sl.Elem()
	}
	st := sl.Type()
	sliceType := st.Elem()
	if sliceType.Kind() == reflect.Ptr {
		sliceType = sliceType.Elem()
	}

	//query from mgo
	if c, err = mdb.Mgo().Find(core.SqlTable("hero"), bson.M{}); err != nil {
		// if c, err = mgoDb.Collection("hreo").Find(context.Background(), bson.M{}); err != nil {
		return err
	} else {
		var temp map[string]interface{} = make(map[string]interface{})

		for c.Next(context.Background()) {
			_id := c.Current.Lookup("_id").StringValue()
			if sl.Len() < sl.Cap() {
				sl.Set(sl.Slice(0, sl.Len()+1))
				elem := sl.Index(sl.Len() - 1)
				if elem.IsNil() {
					elem.Set(reflect.New(sliceType))
				}
				if err = c.Decode(elem.Elem().Addr().Interface()); err != nil {
					return
				}
				temp[_id] = elem.Elem().Addr().Interface()
				continue
			}
			elem := reflect.New(sliceType)
			sl.Set(reflect.Append(sl, elem))
			if err = c.Decode(elem.Elem().Addr().Interface()); err != nil {
				return
			}
			temp[_id] = elem.Elem().Addr().Interface()
		}
		if len(temp) == 0 { //没有数据自己返回
			return
		}
	}

	return err
}

func GetList2(data interface{}) (err error) {
	// c, err := mdb.Mgo().Find(core.SqlTable("hero"), bson.M{})
	c, err := mgoDb.Collection("hero").Find(context.Background(), bson.M{})
	if err != nil {
		fmt.Println(err)
		return
	}
	// defer c.Close(context.Background())

	list := make([]interface{}, 0)
	for c.Next(context.Background()) {
		val := reflect.ValueOf(data).Interface()
		if err = c.Decode(val); err != nil {
			continue
		}

		list = append(list, val)
	}
	return
}

func GetList3(data any) []any {
	// c, err := mdb.Mgo().Collection("hero").Find(context.Background(), bson.M{})
	c, err := mgoDb.Collection("hero").Find(context.Background(), bson.M{})
	if err != nil {
		fmt.Println(err)
	}
	defer c.Close(context.Background())

	list := make([]any, 0)

	for c.Next(context.Background()) {
		_val := reflect.ValueOf(data).Interface()
		err2 := c.Decode(_val)
		if err2 != nil {
			continue
		}

		list = append(list, _val)
	}
	return list
}

func GetList4(data *DBHero) []any {
	// c, err := mdb.Mgo().Find(core.SqlTable("hero"), bson.M{})
	c, err := mgoDb.Collection("hero").Find(context.Background(), bson.M{})
	if err != nil {
		fmt.Println(err)
	}
	defer c.Close(context.Background())

	list := make([]any, 0)
	for c.Next(context.Background()) {
		err2 := c.Decode(data)
		if err2 != nil {
			continue
		}

		list = append(list, data)
	}
	return list
}
func BenchmarkSimple(b *testing.B) {
	// f, _ := os.Create("c://pprof2")
	// pprof.WriteHeapProfile(f)
	// defer f.Close()
	for i := 0; i < b.N; i++ {
		GetList4(new(DBHero))
	}
}