bitcore-node-zcash/app/models/Address.js

'use strict';

var imports            = require('soop').imports();
var async              = require('async');
var bitcore            = require('bitcore');
var BitcoreAddress     = bitcore.Address;
var BitcoreTransaction = bitcore.Transaction;
var BitcoreUtil        = bitcore.util;
var Parser             = bitcore.BinaryParser;
var Buffer             = bitcore.Buffer;
var TransactionDb      = imports.TransactionDb || require('../../lib/TransactionDb').default();
var BlockDb            = imports.BlockDb || require('../../lib/BlockDb').default();
var config              = require('../../config/config');
var CONCURRENCY        = 5;

function Address(addrStr) {
  this.balanceSat        = 0;
  this.totalReceivedSat  = 0;
  this.totalSentSat      = 0;

  this.unconfirmedBalanceSat  = 0;

  this.txApperances           = 0;
  this.unconfirmedTxApperances= 0;
  this.seen                   = {};

  // TODO store only txids? +index? +all?
  this.transactions   = [];
  this.unspent   = [];

  var a = new BitcoreAddress(addrStr);
  a.validate();
  this.addrStr        = addrStr;
  
  Object.defineProperty(this, 'totalSent', {
    get: function() {
      return parseFloat(this.totalSentSat) / parseFloat(BitcoreUtil.COIN);
    },
    set:  function(i) {
      this.totalSentSat =  i * BitcoreUtil.COIN;
    },
    enumerable: 1,
  });

  Object.defineProperty(this, 'balance', {
    get: function() {
      return parseFloat(this.balanceSat) / parseFloat(BitcoreUtil.COIN);
    },
    set:  function(i) {
      this.balance =   i * BitcoreUtil.COIN;
    },
    enumerable: 1,
  });

  Object.defineProperty(this, 'totalReceived', {
    get: function() {
      return parseFloat(this.totalReceivedSat) / parseFloat(BitcoreUtil.COIN);
    },
    set:  function(i) {
      this.totalReceived =  i * BitcoreUtil.COIN;
    },
    enumerable: 1,
  });


  Object.defineProperty(this, 'unconfirmedBalance', {
    get: function() {
      return parseFloat(this.unconfirmedBalanceSat) / parseFloat(BitcoreUtil.COIN);
    },
    set:  function(i) {
      this.unconfirmedBalanceSat =  i * BitcoreUtil.COIN;
    },
    enumerable: 1,
  });

}

Address.prototype.getObj = function() {
  // Normalize json address
  return {
    'addrStr':                  this.addrStr,
    'balance':                  this.balance,
    'balanceSat':               this.balanceSat,
    'totalReceived':            this.totalReceived,
    'totalReceivedSat':         this.totalReceivedSat,
    'totalSent':                this.totalSent,
    'totalSentSat':             this.totalSentSat,
    'unconfirmedBalance':       this.unconfirmedBalance,
    'unconfirmedBalanceSat':    this.unconfirmedBalanceSat,
    'unconfirmedTxApperances':  this.unconfirmedTxApperances,
    'txApperances':             this.txApperances,
    'transactions':             this.transactions
  };
};

Address.prototype._addTxItem = function(txItem, txList) {
  var add=0, addSpend=0;
  var v = txItem.value_sat;
  var seen = this.seen;

  // Founding tx
  if ( !seen[txItem.txid] ) {
    seen[txItem.txid]=1;
    add=1;

    if (txList)
      txList.push(txItem.txid);
  }

  // Spent tx
  if (txItem.spentTxId && !seen[txItem.spentTxId]  ) {
    if (txList) {
      txList.push(txItem.spentTxId);
    }
    seen[txItem.spentTxId]=1;
    addSpend=1;
  }
  if (txItem.isConfirmed) {
    this.txApperances += add;
    this.totalReceivedSat += v;
    if (! txItem.spentTxId ) {
      //unspent
      this.balanceSat   += v;
    }
    else if(!txItem.spentIsConfirmed) {
      // unspent
      this.balanceSat   += v;
      this.unconfirmedBalanceSat -= v;
      this.unconfirmedTxApperances += addSpend;
    }
    else {
      // spent
      this.totalSentSat += v;
      this.txApperances += addSpend;
    }
  }
  else {
    this.unconfirmedBalanceSat += v;
    this.unconfirmedTxApperances += add;
  }
};

// opts are
// .onlyUnspent
// .txLimit     (=0 -> no txs, => -1 no limit)
// 
Address.prototype.update = function(next, opts) {
  var self = this;
  if (!self.addrStr) return next();
  opts = opts || {};

  if (! ('ignoreCache' in opts) )
    opts.ignoreCache = config.ignoreCache;

  // should collect txList from address?
  var txList  = opts.txLimit === 0 ? null: [];

  var tDb   = TransactionDb;
  var bDb   = BlockDb;
  tDb.fromAddr(self.addrStr, opts, function(err,txOut){
    if (err) return next(err);

    bDb.fillConfirmations(txOut, function(err) {
      if (err) return next(err);

      tDb.cacheConfirmations(txOut, function(err) {
// console.log('[Address.js.161:txOut:]',txOut); //TODO
        if (err) return next(err);
        if (opts.onlyUnspent) {
          txOut  = txOut.filter(function(x){
            return !x.spentTxId;
          });
          tDb.fillScriptPubKey(txOut, function() {
            self.unspent = txOut.map(function(x){
              return {
                address: self.addrStr,
                txid: x.txid,
                vout: x.index,
                ts: x.ts,
                scriptPubKey: x.scriptPubKey,
                amount: x.value_sat / BitcoreUtil.COIN,
                confirmations: x.isConfirmedCached ? (config.safeConfirmations) : x.confirmations,
                confirmationsFromCache: !!x.isConfirmedCached,
              };
            });
            return next();
          });
        }
        else {
          txOut.forEach(function(txItem){
            self._addTxItem(txItem, txList);
          });
          if (txList) 
            self.transactions = txList;

          return next();
        }
      });
    });
  });
};

module.exports = require('soop')(Address);