Files
xahau.js/src/ledger/parse/ledger.ts
2019-02-07 00:29:59 -08:00

86 lines
2.5 KiB
TypeScript

import * as _ from 'lodash'
import {removeUndefined, rippleTimeToISO8601} from '../../common'
import parseTransaction from './transaction'
import {Ledger} from '../../common/types/objects'
export type FormattedLedger = {
// TODO: properties in type don't match response object. Fix!
// accepted: boolean,
// closed: boolean,
stateHash: string,
closeTime: string,
closeTimeResolution: number,
closeFlags: number,
ledgerHash: string,
ledgerVersion: number,
parentLedgerHash: string,
parentCloseTime: string,
totalDrops: string,
transactionHash: string,
transactions?: Array<object>,
transactionHashes?: Array<string>,
rawState?: string,
stateHashes?: Array<string>
}
function parseTransactionWrapper(ledgerVersion, tx) {
// renames metaData to meta and adds ledger_index
const transaction = _.assign({}, _.omit(tx, 'metaData'), {
meta: tx.metaData,
ledger_index: ledgerVersion
})
const result = parseTransaction(transaction, true)
if (!result.outcome.ledgerVersion) {
result.outcome.ledgerVersion = ledgerVersion
}
return result
}
function parseTransactions(transactions, ledgerVersion) {
if (_.isEmpty(transactions)) {
return {}
}
if (_.isString(transactions[0])) {
return {transactionHashes: transactions}
}
return {
transactions: _.map(transactions,
_.partial(parseTransactionWrapper, ledgerVersion))
}
}
function parseState(state) {
if (_.isEmpty(state)) {
return {}
}
if (_.isString(state[0])) {
return {stateHashes: state}
}
return {rawState: JSON.stringify(state)}
}
/**
* @param {Ledger} ledger must be a *closed* ledger with valid `close_time` and `parent_close_time`
* @returns {FormattedLedger} formatted ledger
* @throws RangeError: Invalid time value (rippleTimeToISO8601)
*/
export function parseLedger(ledger: Ledger): FormattedLedger {
const ledgerVersion = parseInt(ledger.ledger_index || ledger.seqNum, 10)
return removeUndefined(Object.assign(
{
stateHash: ledger.account_hash,
closeTime: rippleTimeToISO8601(ledger.close_time),
closeTimeResolution: ledger.close_time_resolution,
closeFlags: ledger.close_flags,
ledgerHash: ledger.hash || ledger.ledger_hash,
ledgerVersion: ledgerVersion,
parentLedgerHash: ledger.parent_hash,
parentCloseTime: rippleTimeToISO8601(ledger.parent_close_time),
totalDrops: ledger.total_coins || ledger.totalCoins,
transactionHash: ledger.transaction_hash
},
parseTransactions(ledger.transactions, ledgerVersion),
parseState(ledger.accountState)
))
}