package core

import (
	pb "schain/proto"
)

// 根据编号删除相应交易
func DeleteTx(arr []string, id string) []string {
	for i := 0; i < len(arr); i++ {
		if id == arr[i] {
			arr = append(arr[:i], arr[i+1:]...)
		}
	}
	return arr
}

/*func DeleteTx(arr []string, id string) []string {
	result := make([]string, 0)

	for _, item := range arr {
		if item != id {
			result = append(result, item)
		}
	}

	return result
}*/

// 在 fabric 中，一个区块结构 Block 的主要数据部分是由一个或多个交易(或者配置)数据结构 Envelope 组成。出块即是将一个或多个 Envelope 打包成一个 Block，这个工作由 orderer 完成。
func GetEnvelope(txID string, envelopes []*pb.Envelope) (*pb.Envelope, []*pb.Envelope) {
	for index, envelope := range envelopes {
		if envelope.TxID == txID {
			envelopes = append(envelopes[:index], envelopes[index+1:]...)
			return envelope, envelopes
		}
	}
	return nil, envelopes
}

/*GetEnvelope更好的实现方案
func GetEnvelope(txID string, envelopes []*pb.Envelope) (*pb.Envelope, []*pb.Envelope) {
	var foundEnvelope *pb.Envelope
	var remainingEnvelopes []*pb.Envelope

	for _, envelope := range envelopes {
		if envelope.TxID == txID {
			foundEnvelope = envelope
		} else {
			remainingEnvelopes = append(remainingEnvelopes, envelope)
		}
	}

	return foundEnvelope, remainingEnvelopes
}
*/

/*type Envelope struct {
    state         protoimpl.MessageState
    sizeCache     protoimpl.SizeCache
    unknownFields protoimpl.UnknownFields

    TxID      string `protobuf:"bytes,1,opt,name=txID,proto3" json:"txID,omitempty"`
    Payload   []byte `protobuf:"bytes,2,opt,name=Payload,proto3" json:"Payload,omitempty"`
    Signature []byte `protobuf:"bytes,3,opt,name=Signature,proto3" json:"Signature,omitempty"`
}

func (*pb.Envelope).Descriptor() ([]byte, []int)
func (*pb.Envelope).GetPayload() []byte
func (*pb.Envelope).GetSignature() []byte
func (*pb.Envelope).GetTxID() string
func (*pb.Envelope).ProtoMessage()
func (*pb.Envelope).ProtoReflect() protoreflect.Message
func (*pb.Envelope).Reset()
func (*pb.Envelope).String() string*/