feat(dualWay): WIP; new plugin type and initial sell structure chunks added

lib/plugins.js

@@ -16,8 +16,7 @@ var tickerPlugin = null;
 var traderPlugin = null;
 var walletPlugin = null;
 var idVerifierPlugin = null;
-
-var blockchainUtil = null;
+var infoPlugin = null;
 
 var currentlyUsedPlugins = {};
 
@@ -53,8 +52,9 @@ function loadPlugin(name, config) {
   var moduleMethods = {
     ticker: [ 'ticker' ],
     trader: [ 'balance', 'purchase', 'sell' ],
-    wallet: [ 'balance', 'sendBitcoins' ],
-    idVerifier: [ 'verifyUser', 'verifyTransaction' ]
+    wallet: [ 'balance', 'sendBitcoins', 'newAddress' ],
+    idVerifier: [ 'verifyUser', 'verifyTransaction' ],
+    info: [ 'getLastTx', 'getTxStatus' ]
   };
 
   var plugin = null;
@@ -168,9 +168,10 @@ exports.configure = function configure(config) {
     'idVerifier'
   );
 
-  // NOTE: temp solution
-  if (blockchainUtil === null)
-    blockchainUtil = require('./blockchain_util');
+  infoPlugin = loadOrConfigPlugin(
+    infoPlugin,
+    'info'
+  );
 };
 exports.getCachedConfig = function getCachedConfig() {
   return cachedConfig;
@@ -305,8 +306,9 @@ function _monitorAddress(address, cb) {
   var interval = 300;   // TODO make config
 
   function checkAddress(_cb) {
-    blockchainUtil.addressReceived(address, confs, function(err, _received) {
+    infoPlugin.getLastTx(address, function(err, tx) {
       if (err) logger.error(err);
+
       if (_received > 0) received = _received;
       setTimeout(_cb, interval);
     });
@@ -326,7 +328,7 @@ function _monitorAddress(address, cb) {
   async.doUntil(checkAddress, test, handler);
 }
 
-function _waitDeposit(deviceFingerprint, tx) {
+function _awaitDeposit(deviceFingerprint, tx) {
   _monitorAddress(tx.toAddress, function(err, received) {
     var status = 'fullDeposit';
 
@@ -346,24 +348,84 @@ function _waitDeposit(deviceFingerprint, tx) {
   });
 }
 
+function _monitorTx(deviceFingerprint, tx) {
+  infoPlugin.getTxStatus(tx.txHash, function(err, txStatus) {
+    if (err)
+      return setTimeout(_monitorTx, 300, [deviceFingerprint, tx]);
+
+    if (!txStatus || txStatus === 'fullDeposit')
+      return setTimeout(_monitorTx, 300, [deviceFingerprint, tx]);
+
+    if (txStatus.status === 'confirmedDeposit')
+      return db.changeTxStatus(tx.txId, 'confirmedDeposit');
+
+    if (txStatus.status === 'authorizedDeposit') {
+      logger.info('Proceeding with confidence level:' + txStatus.confidence);
+      db.changeTxStatus(tx.txId, 'confirmedDeposit');
+    }
+  });
+}
+
+function _monitorAddress(deviceFingerprint, tx) {
+  infoPlugin.getLastTx(tx.toAddress, function(err, txInfo) {
+    if (err) {
+      logger.error(err);
+      return setTimeout(_monitorAddress, 300, [deviceFingerprint, tx]);
+    }
+
+    // no tx occured at all or deposit address was reused; some previous tx was returned
+    if (!txInfo || txInfo.tsReceived < tx.created)
+      return setTimeout(_monitorAddress, 300, [deviceFingerprint, tx]);
+
+    // enough was sent
+    if (txInfo.amount >= tx.satoshis) {
+
+      tx.txHash = txInfo.txHash;
+
+      // tx is already confirmed
+      if (txInfo.confirmations > 0)
+        return db.changeTxStatus(tx.txId, 'confirmedDeposit', {
+          hash: tx.txHash
+        });
+
+      // warn about dangerous TX
+      if (txInfo.fees === 0)
+        logger.warn('TXs w/o fee can take forever to confirm!');
+
+      // update tx status and save txHash
+      db.changeTxStatus(tx.txId, 'fullDeposit', {
+        hash: tx.txHash
+      });
+
+      // start monitoring TX
+      _monitorTx(deviceFingerprint, tx);
+    }
+  });
+}
+
+
 exports.cashOut = function cashOut(deviceFingerprint, tx, cb) {
   var tmpInfo = {
     label: 'TX ' + Date.now(),
     account: 'deposit'
   };
-  walletPlugin.newAddress('deposit', function(err, address) {
-    if (err) return cb(new Error(err));
+  walletPlugin.newAddress(tmpInfo, function(err, address) {
+    if (err)
+      return cb(new Error(err));
 
     tx.toAddress = address;
-    // WARN: final db structure will determine if we can use this method
+    tx.tx_type = 'sell';
+
     db.insertTx(deviceFingerprint, tx, function(err) {
-      if (err) return cb(new Error(err));
+      if (err)
+        return cb(new Error(err));
 
-      _waitDeposit(deviceFingerprint, tx);
+      // start watching address for incoming txs
+      _awaitDeposit(deviceFingerprint, tx);
+
+      // return address to the machine
       return cb(null, address);
-      // NOTE: logic here will depend on a way we want to handle those txs
     });
-
   });
 };