move sync to a class for testing

Sync.js

@@ -0,0 +1,99 @@
+require('classtool');
+
+function spec(b) {
+  var mongoose  = require('mongoose');
+  var util      = require('util');
+
+  var RpcClient = require('bitcore/RpcClient').class();
+  var networks  = require('bitcore/networks');
+
+  var config    = require('./config/config');
+  var Block     = require('./app/models/Block');
+
+  function Sync(config) {
+    this.network = config.networkName == 'testnet' ? networks.testnet : networks.livenet;
+  }
+
+  Sync.prototype.getNextBlock = function (blockHash,cb) {
+    var that = this;
+
+    if ( !blockHash ) {
+      return cb();
+    }
+
+    this.rpc.getBlock(blockHash, function(err, blockInfo) {
+      if (err) {
+        return cb(err); 
+      }
+
+      if ( ! ( blockInfo.result.height % 1000) ) {
+        var h = blockInfo.result.height,
+            d = blockInfo.result.confirmations;
+        console.log( util.format("Height: %d/%d [%d%%]", h, d, 100*h/(h+d)));
+      }
+
+      Block.create( blockInfo.result, function(err, inBlock) {
+
+        // E11000 => already exists
+        if (err && ! err.toString().match(/E11000/)) {
+          return cb(err);
+        }
+
+        return that.getNextBlock(blockInfo.result.nextblockhash, cb);
+
+      });
+    });
+  }
+
+  Sync.prototype.syncBlocks = function (reindex, cb)  {
+
+    var that        = this;
+    var genesisHash = this.network.genesisBlock.hash.reverse().toString('hex');
+
+    if (reindex) 
+      return this.getNextBlock(genesisHash, cb);
+
+
+    Block.findOne({}, {}, { sort: { 'confirmations' : 1 } }, function(err, block) {
+      if (err) return cb(err);
+
+      var nextHash = 
+        block && block.hash 
+        ? block.hash
+        : genesisHash
+        ;
+
+      
+      console.log('Starting at hash: ' + nextHash);
+      return that.getNextBlock(nextHash, cb);
+    });
+  }
+
+
+  Sync.prototype.start = function (reindex, cb)  {
+
+
+    mongoose.connect(config.db);
+    var db    = mongoose.connection;
+    this.rpc   = new RpcClient(config.bitcoind);
+    var that  = this;
+
+
+    db.on('error', console.error.bind(console, 'connection error:'));
+
+    db.once('open', function callback () {
+
+      that.syncBlocks(reindex, function(err) {
+        if (err) {
+          return cb(err);
+
+        }
+        mongoose.connection.close();
+        return cb();
+      });
+    });
+  }
+  return Sync;
+};
+module.defineClass(spec);
+