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web/cashtab/src/hooks/useBCH.js
| Show First 20 Lines • Show All 428 Lines • ▼ Show 20 Lines | ) => { | ||||
| ); | ); | ||||
| return sendAmountSmallestDenomination; | return sendAmountSmallestDenomination; | ||||
| }; | }; | ||||
| const sendBch = async ( | const sendBch = async ( | ||||
| BCH, | BCH, | ||||
| wallet, | wallet, | ||||
| utxos, | utxos, | ||||
| { addresses, values, encodedOpReturn }, | destinationAddress, | ||||
| sendAmount, | |||||
| feeInSatsPerByte, | feeInSatsPerByte, | ||||
| callbackTxId, | callbackTxId, | ||||
| encodedOpReturn, | |||||
| ) => { | ) => { | ||||
| // Note: callbackTxId is a callback function that accepts a txid as its only parameter | // Note: callbackTxId is a callback function that accepts a txid as its only parameter | ||||
| try { | try { | ||||
| if (!values || values.length === 0) { | if (!sendAmount) { | ||||
| return null; | return null; | ||||
| } | } | ||||
| const value = values.reduce( | const value = new BigNumber(sendAmount); | ||||
| (previous, current) => new BigNumber(current).plus(previous), | |||||
| new BigNumber(0), | |||||
| ); | |||||
| // If user is attempting to send less than minimum accepted by the backend | // If user is attempting to send less than minimum accepted by the backend | ||||
| if (value.lt(new BigNumber(currency.dust))) { | if (value.lt(new BigNumber(currency.dust))) { | ||||
| // Throw the same error given by the backend attempting to broadcast such a tx | // Throw the same error given by the backend attempting to broadcast such a tx | ||||
| throw new Error('dust'); | throw new Error('dust'); | ||||
| } | } | ||||
| const REMAINDER_ADDR = wallet.Path1899.cashAddress; | const REMAINDER_ADDR = wallet.Path1899.cashAddress; | ||||
| const inputUtxos = []; | const inputUtxos = []; | ||||
| Show All 20 Lines | ) => { | ||||
| originalAmount = originalAmount.plus(utxo.value); | originalAmount = originalAmount.plus(utxo.value); | ||||
| const vout = utxo.vout; | const vout = utxo.vout; | ||||
| const txid = utxo.txid; | const txid = utxo.txid; | ||||
| // add input with txid and index of vout | // add input with txid and index of vout | ||||
| transactionBuilder.addInput(txid, vout); | transactionBuilder.addInput(txid, vout); | ||||
| inputUtxos.push(utxo); | inputUtxos.push(utxo); | ||||
| txFee = encodedOpReturn | txFee = encodedOpReturn | ||||
| ? calcFee( | ? calcFee(BCH, inputUtxos, 3, feeInSatsPerByte) | ||||
| BCH, | : calcFee(BCH, inputUtxos, 2, feeInSatsPerByte); | ||||
| inputUtxos, | |||||
| addresses.length + 2, | |||||
| feeInSatsPerByte, | |||||
| ) | |||||
| : calcFee( | |||||
| BCH, | |||||
| inputUtxos, | |||||
| addresses.length + 1, | |||||
| feeInSatsPerByte, | |||||
| ); | |||||
| if (originalAmount.minus(satoshisToSend).minus(txFee).gte(0)) { | if (originalAmount.minus(satoshisToSend).minus(txFee).gte(0)) { | ||||
| break; | break; | ||||
| } | } | ||||
| } | } | ||||
| // amount to send back to the remainder address. | // amount to send back to the remainder address. | ||||
| const remainder = Math.floor( | const remainder = Math.floor( | ||||
| originalAmount.minus(satoshisToSend).minus(txFee), | originalAmount.minus(satoshisToSend).minus(txFee), | ||||
| ); | ); | ||||
| if (remainder < 0) { | if (remainder < 0) { | ||||
| const error = new Error(`Insufficient funds`); | const error = new Error(`Insufficient funds`); | ||||
| error.code = SEND_BCH_ERRORS.INSUFFICIENT_FUNDS; | error.code = SEND_BCH_ERRORS.INSUFFICIENT_FUNDS; | ||||
| throw error; | throw error; | ||||
| } | } | ||||
| if (encodedOpReturn) { | if (encodedOpReturn) { | ||||
| transactionBuilder.addOutput(encodedOpReturn, 0); | transactionBuilder.addOutput(encodedOpReturn, 0); | ||||
| } | } | ||||
| // add output w/ address and amount to send | // add output w/ address and amount to send | ||||
| for (let i = 0; i < addresses.length; i++) { | |||||
| const address = addresses[i]; | |||||
| transactionBuilder.addOutput( | transactionBuilder.addOutput( | ||||
| BCH.Address.toCashAddress(address), | BCH.Address.toCashAddress(destinationAddress), | ||||
| BCH.BitcoinCash.toSatoshi(Number(values[i]).toFixed(8)), | BCH.BitcoinCash.toSatoshi(Number(sendAmount).toFixed(8)), | ||||
| ); | ); | ||||
| } | |||||
| if ( | if ( | ||||
| remainder >= | remainder >= | ||||
| BCH.BitcoinCash.toSatoshi( | BCH.BitcoinCash.toSatoshi( | ||||
| parseFloat(new BigNumber(currency.dust).toFixed(8)), | parseFloat(new BigNumber(currency.dust).toFixed(8)), | ||||
| ) | ) | ||||
| ) { | ) { | ||||
| transactionBuilder.addOutput(REMAINDER_ADDR, remainder); | transactionBuilder.addOutput(REMAINDER_ADDR, remainder); | ||||
| ▲ Show 20 Lines • Show All 78 Lines • Show Last 20 Lines | |||||