package f5

import (
	"os"
	"bufio"
	"reflect"
	"fmt"

	"github.com/golang/protobuf/proto"
	"github.com/golang/protobuf/jsonpb"
	"google.golang.org/protobuf/reflect/protoregistry"
)

func ReadJsonMetaFile(fileName string, list interface{}) {
	msgType := reflect.TypeOf(list).Elem().Elem().Elem()
	msg := reflect.New(msgType)
	msgPb := msg.Interface().(proto.Message)
	msgReflect := proto.MessageReflect(msgPb)
	msgDesc := msgReflect.Descriptor()

	meta, _ := protoregistry.GlobalTypes.FindMessageByName(msgDesc.FullName() + "Metas")
	metaList := meta.New()
	f, _ := os.Open(fileName)
	data, _ := bufio.NewReader(f).ReadString(0)
	data = "{\"values\":" + data
	data += "}"
	err := jsonpb.UnmarshalString(data, proto.MessageV1(metaList))
	if err == nil {
		fmt.Println("json decode ok", data)
	}
	fmt.Println(err)

	/*	msgReflect = proto.MessageReflect(proto.MessageV1(metaList))
	msgDesc = msgReflect.Descriptor()
	valuesField := msgDesc.Fields().ByName("values")
	values := msgReflect.Get(valuesField)
	reflect.ValueOf(list).Elem().Set(reflect.ValueOf(values.List()))
	_ = valuesField
	fmt.Println(valuesField, values)*/
}