blob: 4e1189a651afbe4345f15635772ce85cb0f3b8d3 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
const BN = require('ethereumjs-util').BN
const EthQuery = require('ethjs-query')
const normalize = require('eth-sig-util').normalize
class PendingBalanceCalculator {
// Must be initialized with two functions:
// getBalance => Returns a promise of a BN of the current balance in Wei
// getPendingTransactions => Returns an array of TxMeta Objects,
// which have txParams properties, which include value, gasPrice, and gas,
// all in a base=16 hex format.
constructor ({ getBalance, getPendingTransactions }) {
this.getPendingTransactions = getPendingTransactions
this.getNetworkBalance = getBalance
}
async getBalance() {
console.log('getting balance')
const results = await Promise.all([
this.getNetworkBalance(),
this.getPendingTransactions(),
])
const balance = results[0]
const pending = results[1]
console.dir(pending)
console.dir(balance.toString())
console.trace('but why')
const pendingValue = pending.reduce((total, tx) => {
return total.add(this.valueFor(tx))
}, new BN(0))
console.log(`subtracting ${pendingValue.toString()} from ${balance.toString()}`)
return `0x${ balance.sub(pendingValue).toString(16) }`
}
valueFor (tx) {
const txValue = tx.txParams.value
const normalized = normalize(txValue).substring(2)
console.log({ txValue, normalized })
const value = this.hexToBn(txValue)
return value
}
hexToBn (hex) {
return new BN(normalize(hex).substring(2), 16)
}
}
module.exports = PendingBalanceCalculator
|
