package result import ( "encoding/json" "errors" "github.com/nspcc-dev/neo-go/pkg/core/block" "github.com/nspcc-dev/neo-go/pkg/core/blockchainer" "github.com/nspcc-dev/neo-go/pkg/core/transaction" "github.com/nspcc-dev/neo-go/pkg/util" ) // TransactionOutputRaw is used as a wrapper to represents // a Transaction. type TransactionOutputRaw struct { *transaction.Transaction TransactionMetadata } // TransactionMetadata is an auxilliary struct for proper TransactionOutputRaw marshaling. type TransactionMetadata struct { Blockhash util.Uint256 `json:"blockhash,omitempty"` Confirmations int `json:"confirmations,omitempty"` Timestamp uint64 `json:"blocktime,omitempty"` } // NewTransactionOutputRaw returns a new ransactionOutputRaw object. func NewTransactionOutputRaw(tx *transaction.Transaction, header *block.Header, chain blockchainer.Blockchainer) TransactionOutputRaw { // confirmations formula confirmations := int(chain.BlockHeight() - header.Base.Index + 1) // set index position for i, o := range tx.Outputs { o.Position = i } return TransactionOutputRaw{ Transaction: tx, TransactionMetadata: TransactionMetadata{ Blockhash: header.Hash(), Confirmations: confirmations, Timestamp: header.Timestamp, }, } } // MarshalJSON implements json.Marshaler interface. func (t TransactionOutputRaw) MarshalJSON() ([]byte, error) { output, err := json.Marshal(TransactionMetadata{ Blockhash: t.Blockhash, Confirmations: t.Confirmations, Timestamp: t.Timestamp, }) if err != nil { return nil, err } txBytes, err := json.Marshal(t.Transaction) if err != nil { return nil, err } // We have to keep both transaction.Transaction and tranactionOutputRaw at the same level in json // in order to match C# API, so there's no way to marshall Tx correctly with standard json.Marshaller tool. if output[len(output)-1] != '}' || txBytes[0] != '{' { return nil, errors.New("can't merge internal jsons") } output[len(output)-1] = ',' output = append(output, txBytes[1:]...) return output, nil } // UnmarshalJSON implements json.Marshaler interface. func (t *TransactionOutputRaw) UnmarshalJSON(data []byte) error { // As transaction.Transaction and tranactionOutputRaw are at the same level in json, // do unmarshalling separately for both structs. output := new(TransactionMetadata) err := json.Unmarshal(data, output) if err != nil { return err } t.Blockhash = output.Blockhash t.Confirmations = output.Confirmations t.Timestamp = output.Timestamp transaction := new(transaction.Transaction) err = json.Unmarshal(data, transaction) if err != nil { return err } t.Transaction = transaction return nil }