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@@ -7,3 +7,5 @@ log.txt | |
| npm-debug.log | ||
| config/default.json | ||
| .idea/ | ||
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| \.DS_Store | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| const lodash = require('lodash') | ||
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| let Logger = require('./Logger.js') //eslint-disable-line | ||
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| const FlattenTransactions = {} | ||
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| FlattenTransactions.incoming = (options, callback) => { | ||
| const required = ['amountToFlatten', 'anonFeePercent'] | ||
| if (lodash.intersection(Object.keys(options), required).length !== required.length) { | ||
| Logger.writeLog('FLT_001', 'invalid options', { options, required }) | ||
| callback(false, { message: 'invalid options provided to FlattenTransactions.incoming' }) | ||
| return | ||
| } | ||
| const unsafeAmount = options.amountToFlatten / (1 + (options.anonFeePercent / 100)) | ||
| FlattenTransactions.runtime = { | ||
| callback, | ||
| amountToFlatten: FlattenTransactions.satoshiParser(unsafeAmount), | ||
| } | ||
| FlattenTransactions.flattenIncoming() | ||
| } | ||
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| FlattenTransactions.flattenIncoming = () => { | ||
| const totalInt = Math.floor(FlattenTransactions.runtime.amountToFlatten) | ||
| const totalIntString = totalInt.toString() | ||
| const decimal = FlattenTransactions.runtime.amountToFlatten - totalInt | ||
| const safeDecimal = FlattenTransactions.satoshiParser(decimal) | ||
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| let flattened = [] | ||
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| for (let i = 0; i < totalIntString.length; i++) { | ||
| const factor = 1 * Math.pow(10, totalIntString.length - (i + 1)) | ||
| const numFactors = parseInt(totalIntString[i], 10) | ||
| for (let j = 0; j < numFactors; j++) { | ||
| if (safeDecimal > 0 && lodash.sum(flattened) === totalInt - factor) { | ||
| flattened.push(FlattenTransactions.satoshiParser(parseInt(factor, 10) + safeDecimal)) | ||
| } else { | ||
| flattened.push(parseInt(factor, 10)) | ||
| } | ||
| } | ||
| } | ||
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| if (flattened.length === 1) { | ||
| flattened = [] | ||
| for (let k = 0; k < 10; k++) { | ||
| if (safeDecimal > 0 && k === 9) { | ||
| flattened.push(FlattenTransactions.satoshiParser((totalInt / 10) + safeDecimal)) | ||
| } else { | ||
| flattened.push(totalInt / 10) | ||
| } | ||
| } | ||
| } | ||
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| const reduced = flattened.reduce((acc, x) => x + acc, 0) | ||
| const safeReduced = FlattenTransactions.satoshiParser(reduced) | ||
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| if (safeReduced !== FlattenTransactions.runtime.amountToFlatten) { | ||
| Logger.writeLog('FLT_002', 'unable to correctly flatten amount', { runtime: FlattenTransactions.runtime, flattened }) | ||
| FlattenTransactions.runtime.callback(false, { | ||
| flattened, | ||
| }) | ||
| return | ||
| } | ||
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| FlattenTransactions.runtime.callback(true, { | ||
| flattened, | ||
| }) | ||
| } | ||
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| FlattenTransactions.satoshiParser = (unsafe) => { | ||
| const satoshiFactor = 100000000 | ||
| return Math.round(unsafe * satoshiFactor) / satoshiFactor | ||
| } | ||
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| module.exports = FlattenTransactions |
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