09e306d312
- Added createTx: create unsigned tx (resolves tx-hex ) - Updated createMultisigTx: resolve tx-hex instead of tx object - Added signTx: (synchronized fn) sign the given tx (hex or object) with given private key and returns the signed txhex
738 lines
35 KiB
JavaScript
738 lines
35 KiB
JavaScript
(function (EXPORTS) { //floBlockchainAPI v2.4.1
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/* FLO Blockchain Operator to send/receive data from blockchain using API calls*/
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'use strict';
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const floBlockchainAPI = EXPORTS;
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const DEFAULT = {
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blockchain: floGlobals.blockchain,
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apiURL: {
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FLO: ['https://flosight.duckdns.org/', 'https://flosight.ranchimall.net/'],
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FLO_TEST: ['https://testnet-flosight.duckdns.org', 'https://testnet.flocha.in/']
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},
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sendAmt: 0.001,
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fee: 0.0005,
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minChangeAmt: 0.0005,
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receiverID: floGlobals.adminID
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};
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Object.defineProperties(floBlockchainAPI, {
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sendAmt: {
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get: () => DEFAULT.sendAmt,
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set: amt => !isNaN(amt) ? DEFAULT.sendAmt = amt : null
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},
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fee: {
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get: () => DEFAULT.fee,
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set: fee => !isNaN(fee) ? DEFAULT.fee = fee : null
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},
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defaultReceiver: {
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get: () => DEFAULT.receiverID,
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set: floID => DEFAULT.receiverID = floID
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},
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blockchain: {
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get: () => DEFAULT.blockchain
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}
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});
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if (floGlobals.sendAmt) floBlockchainAPI.sendAmt = floGlobals.sendAmt;
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if (floGlobals.fee) floBlockchainAPI.fee = floGlobals.fee;
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Object.defineProperties(floGlobals, {
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sendAmt: {
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get: () => DEFAULT.sendAmt,
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set: amt => !isNaN(amt) ? DEFAULT.sendAmt = amt : null
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},
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fee: {
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get: () => DEFAULT.fee,
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set: fee => !isNaN(fee) ? DEFAULT.fee = fee : null
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}
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});
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const allServerList = new Set(floGlobals.apiURL && floGlobals.apiURL[DEFAULT.blockchain] ? floGlobals.apiURL[DEFAULT.blockchain] : DEFAULT.apiURL[DEFAULT.blockchain]);
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var serverList = Array.from(allServerList);
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var curPos = floCrypto.randInt(0, serverList.length - 1);
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function fetch_retry(apicall, rm_flosight) {
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return new Promise((resolve, reject) => {
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let i = serverList.indexOf(rm_flosight)
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if (i != -1) serverList.splice(i, 1);
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curPos = floCrypto.randInt(0, serverList.length - 1);
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fetch_api(apicall, false)
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.then(result => resolve(result))
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.catch(error => reject(error));
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})
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}
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function fetch_api(apicall, ic = true) {
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return new Promise((resolve, reject) => {
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if (serverList.length === 0) {
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if (ic) {
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serverList = Array.from(allServerList);
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curPos = floCrypto.randInt(0, serverList.length - 1);
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fetch_api(apicall, false)
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.then(result => resolve(result))
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.catch(error => reject(error));
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} else
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reject("No floSight server working");
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} else {
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let flosight = serverList[curPos];
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fetch(flosight + apicall).then(response => {
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if (response.ok)
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response.json().then(data => resolve(data));
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else {
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fetch_retry(apicall, flosight)
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.then(result => resolve(result))
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.catch(error => reject(error));
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}
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}).catch(error => {
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fetch_retry(apicall, flosight)
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.then(result => resolve(result))
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.catch(error => reject(error));
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})
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}
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})
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}
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Object.defineProperties(floBlockchainAPI, {
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serverList: {
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get: () => Array.from(serverList)
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},
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current_server: {
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get: () => serverList[curPos]
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}
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});
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//Promised function to get data from API
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const promisedAPI = floBlockchainAPI.promisedAPI = floBlockchainAPI.fetch = function (apicall) {
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return new Promise((resolve, reject) => {
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//console.log(apicall);
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fetch_api(apicall)
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.then(result => resolve(result))
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.catch(error => reject(error));
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});
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}
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//Get balance for the given Address
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const getBalance = floBlockchainAPI.getBalance = function (addr) {
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return new Promise((resolve, reject) => {
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promisedAPI(`api/addr/${addr}/balance`)
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.then(balance => resolve(parseFloat(balance)))
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.catch(error => reject(error));
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});
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}
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//create a transaction with single sender
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const createTx = function (senderAddr, receiverAddr, sendAmt, floData = '', strict_utxo = true) {
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return new Promise((resolve, reject) => {
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if (!floCrypto.validateASCII(floData))
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return reject("Invalid FLO_Data: only printable ASCII characters are allowed");
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else if (!floCrypto.validateFloID(senderAddr, true))
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return reject(`Invalid address : ${senderAddr}`);
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else if (!floCrypto.validateFloID(receiverAddr))
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return reject(`Invalid address : ${receiverAddr}`);
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else if (typeof sendAmt !== 'number' || sendAmt <= 0)
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return reject(`Invalid sendAmt : ${sendAmt}`);
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getBalance(senderAddr).then(balance => {
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var fee = DEFAULT.fee;
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if (balance < sendAmt + fee)
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return reject("Insufficient FLO balance!");
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//get unconfirmed tx list
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promisedAPI(`api/addr/${senderAddr}`).then(result => {
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readTxs(senderAddr, 0, result.unconfirmedTxApperances).then(result => {
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let unconfirmedSpent = {};
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for (let tx of result.items)
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if (tx.confirmations == 0)
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for (let vin of tx.vin)
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if (vin.addr === senderAddr) {
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if (Array.isArray(unconfirmedSpent[vin.txid]))
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unconfirmedSpent[vin.txid].push(vin.vout);
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else
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unconfirmedSpent[vin.txid] = [vin.vout];
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}
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//get utxos list
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promisedAPI(`api/addr/${senderAddr}/utxo`).then(utxos => {
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//form/construct the transaction data
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var trx = bitjs.transaction();
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var utxoAmt = 0.0;
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for (var i = utxos.length - 1;
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(i >= 0) && (utxoAmt < sendAmt + fee); i--) {
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//use only utxos with confirmations (strict_utxo mode)
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if (utxos[i].confirmations || !strict_utxo) {
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if (utxos[i].txid in unconfirmedSpent && unconfirmedSpent[utxos[i].txid].includes(utxos[i].vout))
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continue; //A transaction has already used the utxo, but is unconfirmed.
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trx.addinput(utxos[i].txid, utxos[i].vout, utxos[i].scriptPubKey);
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utxoAmt += utxos[i].amount;
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};
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}
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if (utxoAmt < sendAmt + fee)
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reject("Insufficient FLO: Some UTXOs are unconfirmed");
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else {
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trx.addoutput(receiverAddr, sendAmt);
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var change = utxoAmt - sendAmt - fee;
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if (change > DEFAULT.minChangeAmt)
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trx.addoutput(senderAddr, change);
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trx.addflodata(floData.replace(/\n/g, ' '));
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resolve(trx);
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}
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}).catch(error => reject(error))
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}).catch(error => reject(error))
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}).catch(error => reject(error))
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}).catch(error => reject(error))
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})
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}
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floBlockchainAPI.createTx = function (senderAddr, receiverAddr, sendAmt, floData = '', strict_utxo = true) {
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return new Promise((resolve, reject) => {
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createTx(senderAddr, receiverAddr, sendAmt, floData, strict_utxo)
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.then(trx => resolve(trx.serialize()))
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.catch(error => reject(error))
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})
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}
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//Send Tx to blockchain
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const sendTx = floBlockchainAPI.sendTx = function (senderAddr, receiverAddr, sendAmt, privKey, floData = '', strict_utxo = true) {
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return new Promise((resolve, reject) => {
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if (!floCrypto.validateFloID(senderAddr, true))
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return reject(`Invalid address : ${senderAddr}`);
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else if (privKey.length < 1 || !floCrypto.verifyPrivKey(privKey, senderAddr))
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return reject("Invalid Private key!");
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createTx(senderAddr, receiverAddr, sendAmt, floData, strict_utxo).then(trx => {
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var signedTxHash = trx.sign(privKey, 1);
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broadcastTx(signedTxHash)
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.then(txid => resolve(txid))
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.catch(error => reject(error))
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}).catch(error => reject(error))
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});
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}
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//Write Data into blockchain
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floBlockchainAPI.writeData = function (senderAddr, data, privKey, receiverAddr = DEFAULT.receiverID, options = {}) {
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let strict_utxo = options.strict_utxo === false ? false : true,
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sendAmt = isNaN(options.sendAmt) ? DEFAULT.sendAmt : options.sendAmt;
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return new Promise((resolve, reject) => {
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if (typeof data != "string")
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data = JSON.stringify(data);
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sendTx(senderAddr, receiverAddr, sendAmt, privKey, data, strict_utxo)
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.then(txid => resolve(txid))
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.catch(error => reject(error));
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});
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}
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//merge all UTXOs of a given floID into a single UTXO
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floBlockchainAPI.mergeUTXOs = function (floID, privKey, floData = '') {
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return new Promise((resolve, reject) => {
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if (!floCrypto.validateFloID(floID, true))
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return reject(`Invalid floID`);
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if (!floCrypto.verifyPrivKey(privKey, floID))
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return reject("Invalid Private Key");
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if (!floCrypto.validateASCII(floData))
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return reject("Invalid FLO_Data: only printable ASCII characters are allowed");
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var trx = bitjs.transaction();
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var utxoAmt = 0.0;
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var fee = DEFAULT.fee;
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promisedAPI(`api/addr/${floID}/utxo`).then(utxos => {
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for (var i = utxos.length - 1; i >= 0; i--)
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if (utxos[i].confirmations) {
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trx.addinput(utxos[i].txid, utxos[i].vout, utxos[i].scriptPubKey);
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utxoAmt += utxos[i].amount;
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}
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trx.addoutput(floID, utxoAmt - fee);
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trx.addflodata(floData.replace(/\n/g, ' '));
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var signedTxHash = trx.sign(privKey, 1);
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broadcastTx(signedTxHash)
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.then(txid => resolve(txid))
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.catch(error => reject(error))
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}).catch(error => reject(error))
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})
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}
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/**Write data into blockchain from (and/or) to multiple floID
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* @param {Array} senderPrivKeys List of sender private-keys
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* @param {string} data FLO data of the txn
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* @param {Array} receivers List of receivers
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* @param {boolean} preserveRatio (optional) preserve ratio or equal contribution
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* @return {Promise}
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*/
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floBlockchainAPI.writeDataMultiple = function (senderPrivKeys, data, receivers = [DEFAULT.receiverID], preserveRatio = true) {
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return new Promise((resolve, reject) => {
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if (!Array.isArray(senderPrivKeys))
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return reject("Invalid senderPrivKeys: SenderPrivKeys must be Array");
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if (!preserveRatio) {
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let tmp = {};
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let amount = (DEFAULT.sendAmt * receivers.length) / senderPrivKeys.length;
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senderPrivKeys.forEach(key => tmp[key] = amount);
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senderPrivKeys = tmp;
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}
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if (!Array.isArray(receivers))
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return reject("Invalid receivers: Receivers must be Array");
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else {
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let tmp = {};
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let amount = DEFAULT.sendAmt;
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receivers.forEach(floID => tmp[floID] = amount);
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receivers = tmp
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}
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if (typeof data != "string")
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data = JSON.stringify(data);
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sendTxMultiple(senderPrivKeys, receivers, data)
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.then(txid => resolve(txid))
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.catch(error => reject(error))
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})
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}
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/**Send Tx from (and/or) to multiple floID
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* @param {Array or Object} senderPrivKeys List of sender private-key (optional: with coins to be sent)
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* @param {Object} receivers List of receivers with respective amount to be sent
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* @param {string} floData FLO data of the txn
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* @return {Promise}
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*/
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const sendTxMultiple = floBlockchainAPI.sendTxMultiple = function (senderPrivKeys, receivers, floData = '') {
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return new Promise((resolve, reject) => {
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if (!floCrypto.validateASCII(floData))
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return reject("Invalid FLO_Data: only printable ASCII characters are allowed");
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let senders = {},
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preserveRatio;
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//check for argument validations
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try {
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let invalids = {
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InvalidSenderPrivKeys: [],
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InvalidSenderAmountFor: [],
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InvalidReceiverIDs: [],
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InvalidReceiveAmountFor: []
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}
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let inputVal = 0,
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outputVal = 0;
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//Validate sender privatekeys (and send amount if passed)
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//conversion when only privateKeys are passed (preserveRatio mode)
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if (Array.isArray(senderPrivKeys)) {
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senderPrivKeys.forEach(key => {
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try {
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if (!key)
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invalids.InvalidSenderPrivKeys.push(key);
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else {
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let floID = floCrypto.getFloID(key);
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senders[floID] = {
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wif: key
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}
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}
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} catch (error) {
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invalids.InvalidSenderPrivKeys.push(key)
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}
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})
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preserveRatio = true;
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}
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//conversion when privatekeys are passed with send amount
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else {
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for (let key in senderPrivKeys) {
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try {
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if (!key)
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invalids.InvalidSenderPrivKeys.push(key);
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else {
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if (typeof senderPrivKeys[key] !== 'number' || senderPrivKeys[key] <= 0)
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invalids.InvalidSenderAmountFor.push(key);
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else
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inputVal += senderPrivKeys[key];
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let floID = floCrypto.getFloID(key);
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senders[floID] = {
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wif: key,
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coins: senderPrivKeys[key]
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}
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}
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} catch (error) {
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invalids.InvalidSenderPrivKeys.push(key)
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}
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}
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preserveRatio = false;
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}
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//Validate the receiver IDs and receive amount
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for (let floID in receivers) {
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if (!floCrypto.validateFloID(floID))
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invalids.InvalidReceiverIDs.push(floID);
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if (typeof receivers[floID] !== 'number' || receivers[floID] <= 0)
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invalids.InvalidReceiveAmountFor.push(floID);
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else
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outputVal += receivers[floID];
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}
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//Reject if any invalids are found
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for (let i in invalids)
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if (!invalids[i].length)
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delete invalids[i];
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if (Object.keys(invalids).length)
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return reject(invalids);
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//Reject if given inputVal and outputVal are not equal
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if (!preserveRatio && inputVal != outputVal)
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return reject(`Input Amount (${inputVal}) not equal to Output Amount (${outputVal})`);
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} catch (error) {
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return reject(error)
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}
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//Get balance of senders
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let promises = [];
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for (let floID in senders)
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promises.push(getBalance(floID));
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Promise.all(promises).then(results => {
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let totalBalance = 0,
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totalFee = DEFAULT.fee,
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balance = {};
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//Divide fee among sender if not for preserveRatio
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if (!preserveRatio)
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var dividedFee = totalFee / Object.keys(senders).length;
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//Check if balance of each sender is sufficient enough
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let insufficient = [];
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for (let floID in senders) {
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balance[floID] = parseFloat(results.shift());
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if (isNaN(balance[floID]) || (preserveRatio && balance[floID] <= totalFee) ||
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(!preserveRatio && balance[floID] < senders[floID].coins + dividedFee))
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insufficient.push(floID);
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totalBalance += balance[floID];
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}
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if (insufficient.length)
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return reject({
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InsufficientBalance: insufficient
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})
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//Calculate totalSentAmount and check if totalBalance is sufficient
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let totalSendAmt = totalFee;
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for (let floID in receivers)
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totalSendAmt += receivers[floID];
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if (totalBalance < totalSendAmt)
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return reject("Insufficient total Balance");
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//Get the UTXOs of the senders
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let promises = [];
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for (let floID in senders)
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promises.push(promisedAPI(`api/addr/${floID}/utxo`));
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Promise.all(promises).then(results => {
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var trx = bitjs.transaction();
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for (let floID in senders) {
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let utxos = results.shift();
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let sendAmt;
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if (preserveRatio) {
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let ratio = (balance[floID] / totalBalance);
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sendAmt = totalSendAmt * ratio;
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} else
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sendAmt = senders[floID].coins + dividedFee;
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let utxoAmt = 0.0;
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for (let i = utxos.length - 1;
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(i >= 0) && (utxoAmt < sendAmt); i--) {
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if (utxos[i].confirmations) {
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trx.addinput(utxos[i].txid, utxos[i].vout, utxos[i].scriptPubKey);
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utxoAmt += utxos[i].amount;
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}
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}
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if (utxoAmt < sendAmt)
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return reject("Insufficient balance:" + floID);
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let change = (utxoAmt - sendAmt);
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if (change > 0)
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trx.addoutput(floID, change);
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}
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for (let floID in receivers)
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trx.addoutput(floID, receivers[floID]);
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trx.addflodata(floData.replace(/\n/g, ' '));
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for (let floID in senders)
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trx.sign(senders[floID].wif, 1);
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var signedTxHash = trx.serialize();
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broadcastTx(signedTxHash)
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.then(txid => resolve(txid))
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.catch(error => reject(error))
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}).catch(error => reject(error))
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}).catch(error => reject(error))
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})
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}
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//Create a multisig transaction
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const createMultisigTx = function (redeemScript, receivers, amounts, floData = '', strict_utxo = true) {
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return new Promise((resolve, reject) => {
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var multisig = floCrypto.decodeRedeemScript(redeemScript);
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//validate multisig script and flodata
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if (!multisig)
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return reject(`Invalid redeemScript`);
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var senderAddr = multisig.address;
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if (!floCrypto.validateFloID(senderAddr))
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return reject(`Invalid multisig : ${senderAddr}`);
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else if (!floCrypto.validateASCII(floData))
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return reject("Invalid FLO_Data: only printable ASCII characters are allowed");
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//validate receiver addresses
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if (!Array.isArray(receivers))
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receivers = [receivers];
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for (let r of receivers)
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if (!floCrypto.validateFloID(r))
|
|
return reject(`Invalid address : ${r}`);
|
|
//validate amounts
|
|
if (!Array.isArray(amounts))
|
|
amounts = [amounts];
|
|
if (amounts.length != receivers.length)
|
|
return reject("Receivers and amounts have different length");
|
|
var sendAmt = 0;
|
|
for (let a of amounts) {
|
|
if (typeof a !== 'number' || a <= 0)
|
|
return reject(`Invalid amount : ${a}`);
|
|
sendAmt += a;
|
|
}
|
|
|
|
getBalance(senderAddr).then(balance => {
|
|
var fee = DEFAULT.fee;
|
|
if (balance < sendAmt + fee)
|
|
return reject("Insufficient FLO balance!");
|
|
//get unconfirmed tx list
|
|
promisedAPI(`api/addr/${senderAddr}`).then(result => {
|
|
readTxs(senderAddr, 0, result.unconfirmedTxApperances).then(result => {
|
|
let unconfirmedSpent = {};
|
|
for (let tx of result.items)
|
|
if (tx.confirmations == 0)
|
|
for (let vin of tx.vin)
|
|
if (vin.addr === senderAddr) {
|
|
if (Array.isArray(unconfirmedSpent[vin.txid]))
|
|
unconfirmedSpent[vin.txid].push(vin.vout);
|
|
else
|
|
unconfirmedSpent[vin.txid] = [vin.vout];
|
|
}
|
|
//get utxos list
|
|
promisedAPI(`api/addr/${senderAddr}/utxo`).then(utxos => {
|
|
//form/construct the transaction data
|
|
var trx = bitjs.transaction();
|
|
var utxoAmt = 0.0;
|
|
for (var i = utxos.length - 1;
|
|
(i >= 0) && (utxoAmt < sendAmt + fee); i--) {
|
|
//use only utxos with confirmations (strict_utxo mode)
|
|
if (utxos[i].confirmations || !strict_utxo) {
|
|
if (utxos[i].txid in unconfirmedSpent && unconfirmedSpent[utxos[i].txid].includes(utxos[i].vout))
|
|
continue; //A transaction has already used the utxo, but is unconfirmed.
|
|
trx.addinput(utxos[i].txid, utxos[i].vout, redeemScript); //for multisig, script=redeemScript
|
|
utxoAmt += utxos[i].amount;
|
|
};
|
|
}
|
|
if (utxoAmt < sendAmt + fee)
|
|
reject("Insufficient FLO: Some UTXOs are unconfirmed");
|
|
else {
|
|
for (let i in receivers)
|
|
trx.addoutput(receivers[i], amounts[i]);
|
|
var change = utxoAmt - sendAmt - fee;
|
|
if (change > DEFAULT.minChangeAmt)
|
|
trx.addoutput(senderAddr, change);
|
|
trx.addflodata(floData.replace(/\n/g, ' '));
|
|
resolve(trx);
|
|
}
|
|
}).catch(error => reject(error))
|
|
}).catch(error => reject(error))
|
|
}).catch(error => reject(error))
|
|
}).catch(error => reject(error))
|
|
});
|
|
}
|
|
|
|
//Same as above, but explict call should return serialized tx-hex
|
|
floBlockchainAPI.createMultisigTx = function (redeemScript, receivers, amounts, floData = '', strict_utxo = true) {
|
|
return new Promise((resolve, reject) => {
|
|
createMultisigTx(redeemScript, receivers, amounts, floData, strict_utxo)
|
|
.then(trx => resolve(trx.serialize()))
|
|
.catch(error => reject(error))
|
|
})
|
|
}
|
|
|
|
//Create and send multisig transaction
|
|
const sendMultisigTx = floBlockchainAPI.sendMultisigTx = function (redeemScript, privateKeys, receivers, amounts, floData = '', strict_utxo = true) {
|
|
return new Promise((resolve, reject) => {
|
|
var multisig = floCrypto.decodeRedeemScript(redeemScript);
|
|
if (!multisig)
|
|
return reject(`Invalid redeemScript`);
|
|
if (privateKeys.length < multisig.required)
|
|
return reject(`Insufficient privateKeys (required ${multisig.required})`);
|
|
for (let pk of privateKeys) {
|
|
var flag = false;
|
|
for (let pub of multisig.pubkeys)
|
|
if (floCrypto.verifyPrivKey(pk, pub, false))
|
|
flag = true;
|
|
if (!flag)
|
|
return reject(`Invalid Private key`);
|
|
}
|
|
createMultisigTx(redeemScript, receivers, amounts, floData, strict_utxo).then(trx => {
|
|
for (let pk of privateKeys)
|
|
trx.sign(pk, 1);
|
|
var signedTxHash = trx.serialize();
|
|
broadcastTx(signedTxHash)
|
|
.then(txid => resolve(txid))
|
|
.catch(error => reject(error))
|
|
}).catch(error => reject(error))
|
|
})
|
|
}
|
|
|
|
floBlockchainAPI.writeMultisigData = function (redeemScript, data, privatekeys, receiverAddr = DEFAULT.receiverID, options = {}) {
|
|
let strict_utxo = options.strict_utxo === false ? false : true,
|
|
sendAmt = isNaN(options.sendAmt) ? DEFAULT.sendAmt : options.sendAmt;
|
|
return new Promise((resolve, reject) => {
|
|
if (!floCrypto.validateFloID(receiverAddr))
|
|
return reject(`Invalid receiver: ${receiverAddr}`);
|
|
sendMultisigTx(redeemScript, privatekeys, receiverAddr, sendAmt, data, strict_utxo)
|
|
.then(txid => resolve(txid))
|
|
.catch(error => reject(error))
|
|
})
|
|
}
|
|
|
|
floBlockchainAPI.signTx = function (tx, privateKey, sighashtype = 1) {
|
|
if (!floCrypto.getFloID(privateKey))
|
|
throw "Invalid Private key";
|
|
//deserialize if needed
|
|
if (!(tx instanceof Object)) {
|
|
if (typeof tx === 'string' || Array.isArray(tx))
|
|
tx = bitjs.transaction(tx)
|
|
} else if (typeof tx.sign !== 'function')
|
|
throw "Tx is not a instance of transaction";
|
|
var signedTxHex = tx.sign(privateKey);
|
|
return signedTxHex;
|
|
}
|
|
|
|
//Broadcast signed Tx in blockchain using API
|
|
const broadcastTx = floBlockchainAPI.broadcastTx = function (signedTxHash) {
|
|
return new Promise((resolve, reject) => {
|
|
if (signedTxHash.length < 1)
|
|
return reject("Empty Signature");
|
|
var url = serverList[curPos] + 'api/tx/send';
|
|
fetch(url, {
|
|
method: "POST",
|
|
headers: {
|
|
'Content-Type': 'application/json'
|
|
},
|
|
body: `{"rawtx":"${signedTxHash}"}`
|
|
}).then(response => {
|
|
if (response.ok)
|
|
response.json().then(data => resolve(data.txid.result));
|
|
else
|
|
response.text().then(data => resolve(data));
|
|
}).catch(error => reject(error));
|
|
})
|
|
}
|
|
|
|
floBlockchainAPI.getTx = function (txid) {
|
|
return new Promise((resolve, reject) => {
|
|
promisedAPI(`api/tx/${txid}`)
|
|
.then(response => resolve(response))
|
|
.catch(error => reject(error))
|
|
})
|
|
}
|
|
|
|
//Read Txs of Address between from and to
|
|
const readTxs = floBlockchainAPI.readTxs = function (addr, from, to) {
|
|
return new Promise((resolve, reject) => {
|
|
promisedAPI(`api/addrs/${addr}/txs?from=${from}&to=${to}`)
|
|
.then(response => resolve(response))
|
|
.catch(error => reject(error))
|
|
});
|
|
}
|
|
|
|
//Read All Txs of Address (newest first)
|
|
floBlockchainAPI.readAllTxs = function (addr) {
|
|
return new Promise((resolve, reject) => {
|
|
promisedAPI(`api/addrs/${addr}/txs?from=0&to=1`).then(response => {
|
|
promisedAPI(`api/addrs/${addr}/txs?from=0&to=${response.totalItems}0`)
|
|
.then(response => resolve(response.items))
|
|
.catch(error => reject(error));
|
|
}).catch(error => reject(error))
|
|
});
|
|
}
|
|
|
|
/*Read flo Data from txs of given Address
|
|
options can be used to filter data
|
|
limit : maximum number of filtered data (default = 1000, negative = no limit)
|
|
ignoreOld : ignore old txs (default = 0)
|
|
sentOnly : filters only sent data
|
|
receivedOnly: filters only received data
|
|
pattern : filters data that with JSON pattern
|
|
filter : custom filter funtion for floData (eg . filter: d => {return d[0] == '$'})
|
|
tx : (boolean) resolve tx data or not (resolves an Array of Object with tx details)
|
|
sender : flo-id(s) of sender
|
|
receiver : flo-id(s) of receiver
|
|
*/
|
|
floBlockchainAPI.readData = function (addr, options = {}) {
|
|
options.limit = options.limit || 0;
|
|
options.ignoreOld = options.ignoreOld || 0;
|
|
if (typeof options.senders === "string") options.senders = [options.senders];
|
|
if (typeof options.receivers === "string") options.receivers = [options.receivers];
|
|
return new Promise((resolve, reject) => {
|
|
promisedAPI(`api/addrs/${addr}/txs?from=0&to=1`).then(response => {
|
|
var newItems = response.totalItems - options.ignoreOld;
|
|
promisedAPI(`api/addrs/${addr}/txs?from=0&to=${newItems * 2}`).then(response => {
|
|
if (options.limit <= 0)
|
|
options.limit = response.items.length;
|
|
var filteredData = [];
|
|
let numToRead = response.totalItems - options.ignoreOld,
|
|
unconfirmedCount = 0;
|
|
for (let i = 0; i < numToRead && filteredData.length < options.limit; i++) {
|
|
if (!response.items[i].confirmations) { //unconfirmed transactions
|
|
unconfirmedCount++;
|
|
if (numToRead < response.items[i].length)
|
|
numToRead++;
|
|
continue;
|
|
}
|
|
if (options.pattern) {
|
|
try {
|
|
let jsonContent = JSON.parse(response.items[i].floData);
|
|
if (!Object.keys(jsonContent).includes(options.pattern))
|
|
continue;
|
|
} catch (error) {
|
|
continue;
|
|
}
|
|
}
|
|
if (options.sentOnly) {
|
|
let flag = false;
|
|
for (let vin of response.items[i].vin)
|
|
if (vin.addr === addr) {
|
|
flag = true;
|
|
break;
|
|
}
|
|
if (!flag) continue;
|
|
}
|
|
if (Array.isArray(options.senders)) {
|
|
let flag = false;
|
|
for (let vin of response.items[i].vin)
|
|
if (options.senders.includes(vin.addr)) {
|
|
flag = true;
|
|
break;
|
|
}
|
|
if (!flag) continue;
|
|
}
|
|
if (options.receivedOnly) {
|
|
let flag = false;
|
|
for (let vout of response.items[i].vout)
|
|
if (vout.scriptPubKey.addresses[0] === addr) {
|
|
flag = true;
|
|
break;
|
|
}
|
|
if (!flag) continue;
|
|
}
|
|
if (Array.isArray(options.receivers)) {
|
|
let flag = false;
|
|
for (let vout of response.items[i].vout)
|
|
if (options.receivers.includes(vout.scriptPubKey.addresses[0])) {
|
|
flag = true;
|
|
break;
|
|
}
|
|
if (!flag) continue;
|
|
}
|
|
if (options.filter && !options.filter(response.items[i].floData))
|
|
continue;
|
|
|
|
if (options.tx) {
|
|
let d = {}
|
|
d.txid = response.items[i].txid;
|
|
d.time = response.items[i].time;
|
|
d.blockheight = response.items[i].blockheight;
|
|
d.senders = new Set(response.items[i].vin.map(v => v.addr));
|
|
d.receivers = new Set(response.items[i].vout.map(v => v.scriptPubKey.addresses[0]));
|
|
d.data = response.items[i].floData;
|
|
filteredData.push(d);
|
|
} else
|
|
filteredData.push(response.items[i].floData);
|
|
}
|
|
resolve({
|
|
totalTxs: response.totalItems - unconfirmedCount,
|
|
data: filteredData
|
|
});
|
|
}).catch(error => {
|
|
reject(error);
|
|
});
|
|
}).catch(error => {
|
|
reject(error);
|
|
});
|
|
});
|
|
}
|
|
|
|
|
|
})('object' === typeof module ? module.exports : window.floBlockchainAPI = {}); |