package api import ( "encoding/base64" "strconv" "time" ethCommon "github.com/ethereum/go-ethereum/common" "github.com/hermeznetwork/hermez-node/common" "github.com/hermeznetwork/hermez-node/db/historydb" "github.com/iden3/go-iden3-crypto/babyjub" ) // Commons of the API type pagination struct { TotalItems int `json:"totalItems"` LastReturnedItem int `json:"lastReturnedItem"` } type paginationer interface { GetPagination() pagination Len() int } type errorMsg struct { Message string } // History Tx related type historyTxsAPI struct { Txs []historyTxAPI `json:"transactions"` Pagination pagination `json:"pagination"` } func (htx *historyTxsAPI) GetPagination() pagination { return htx.Pagination } func (htx *historyTxsAPI) Len() int { return len(htx.Txs) } type l1Info struct { ToForgeL1TxsNum int64 `json:"toForgeL1TransactionsNum"` UserOrigin bool `json:"userOrigin"` FromEthAddr string `json:"fromHezEthereumAddress"` FromBJJ string `json:"fromBJJ"` LoadAmount string `json:"loadAmount"` HistoricLoadAmountUSD *float64 `json:"historicLoadAmountUSD"` EthBlockNum int64 `json:"ethereumBlockNum"` } type l2Info struct { Fee common.FeeSelector `json:"fee"` HistoricFeeUSD *float64 `json:"historicFeeUSD"` Nonce common.Nonce `json:"nonce"` } type historyTxAPI struct { IsL1 string `json:"L1orL2"` TxID common.TxID `json:"id"` Type common.TxType `json:"type"` Position int `json:"position"` FromIdx string `json:"fromAccountIndex"` ToIdx string `json:"toAccountIndex"` Amount string `json:"amount"` BatchNum *common.BatchNum `json:"batchNum"` HistoricUSD *float64 `json:"historicUSD"` Timestamp time.Time `json:"timestamp"` L1Info *l1Info `json:"L1Info"` L2Info *l2Info `json:"L2Info"` Token common.Token `json:"token"` } func historyTxsToAPI(dbTxs []*historydb.HistoryTx) []historyTxAPI { apiTxs := []historyTxAPI{} for i := 0; i < len(dbTxs); i++ { apiTx := historyTxAPI{ TxID: dbTxs[i].TxID, Type: dbTxs[i].Type, Position: dbTxs[i].Position, FromIdx: idxToHez(dbTxs[i].FromIdx, dbTxs[i].TokenSymbol), ToIdx: idxToHez(dbTxs[i].ToIdx, dbTxs[i].TokenSymbol), Amount: dbTxs[i].Amount.String(), HistoricUSD: dbTxs[i].HistoricUSD, BatchNum: dbTxs[i].BatchNum, Timestamp: dbTxs[i].Timestamp, Token: common.Token{ TokenID: dbTxs[i].TokenID, EthBlockNum: dbTxs[i].TokenEthBlockNum, EthAddr: dbTxs[i].TokenEthAddr, Name: dbTxs[i].TokenName, Symbol: dbTxs[i].TokenSymbol, Decimals: dbTxs[i].TokenDecimals, USD: dbTxs[i].TokenUSD, USDUpdate: dbTxs[i].TokenUSDUpdate, }, L1Info: nil, L2Info: nil, } if dbTxs[i].IsL1 { apiTx.IsL1 = "L1" apiTx.L1Info = &l1Info{ ToForgeL1TxsNum: dbTxs[i].ToForgeL1TxsNum, UserOrigin: dbTxs[i].UserOrigin, FromEthAddr: ethAddrToHez(dbTxs[i].FromEthAddr), FromBJJ: bjjToString(dbTxs[i].FromBJJ), LoadAmount: dbTxs[i].LoadAmount.String(), HistoricLoadAmountUSD: dbTxs[i].HistoricLoadAmountUSD, EthBlockNum: dbTxs[i].EthBlockNum, } } else { apiTx.IsL1 = "L2" apiTx.L2Info = &l2Info{ Fee: *dbTxs[i].Fee, HistoricFeeUSD: dbTxs[i].HistoricFeeUSD, Nonce: *dbTxs[i].Nonce, } } apiTxs = append(apiTxs, apiTx) } return apiTxs } func bjjToString(bjj *babyjub.PublicKey) string { pkComp := [32]byte(bjj.Compress()) sum := pkComp[0] for i := 1; i < len(pkComp); i++ { sum += pkComp[i] } bjjSum := append(pkComp[:], sum) return "hez:" + base64.RawURLEncoding.EncodeToString(bjjSum) } func ethAddrToHez(addr ethCommon.Address) string { return "hez:" + addr.String() } func idxToHez(idx common.Idx, tokenSymbol string) string { return "hez:" + tokenSymbol + ":" + strconv.Itoa(int(idx)) }