From f2fccdd14f7094a1253d30f7496bbcea40cc70d4 Mon Sep 17 00:00:00 2001
From: Manuel Araoz <manuelaraoz@gmail.com>
Date: Thu, 19 Mar 2015 13:18:31 -0300
Subject: [PATCH] sync first attempt

---
 lib/services/block.js | 26 +++++++++++++++++++++-----
 package.json          |  3 ++-
 2 files changed, 23 insertions(+), 6 deletions(-)

diff --git a/lib/services/block.js b/lib/services/block.js
index 712e6f37..d95edd7c 100644
--- a/lib/services/block.js
+++ b/lib/services/block.js
@@ -206,9 +206,27 @@ BlockService.prototype.getLatest = function() {
 
     return self.getBlock(blockHash);
 
-  }).catch(blockNotFound);
+  }).catch(function(err) {
+    if (err instanceof LevelUp.errors.NotFoundError) {
+      return null;
+    }
+    throw err;
+  });
 };
 
+
+/**
+ * Save a new block
+ *
+ * @param {bitcore.Block} block
+ * @return {Promise<Block>} a promise of the same block, for chaining
+ */
+BlockService.prototype.save = function(block) {
+  // TODO: unconfirm previous tip, confirm new tip. 
+  return this._confirmBlock(block);
+};
+
+
 /**
  * Set a block as the current tip of the blockchain
  *
@@ -250,11 +268,9 @@ BlockService.prototype._confirmBlock = function(block) {
 
   }).then(function() {
 
-    return self.database.batchAsync(ops)
+    return self.database.batchAsync(ops);
 
-  }).then(function() {
-    return self.unlock();
-  });
+  }).then(this.unlock.bind(this));
 };
 
 BlockService.prototype._setNextBlock = function(ops, prevBlockHash, block) {
diff --git a/package.json b/package.json
index ecce833d..cb4592e0 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,8 @@
     "glob": "*",
     "js-yaml": "^3.2.7",
     "level-lock": "^1.0.1",
-    "levelup": "~0.19.0",
+    "leveldown": "^1.0.0",
+    "levelup": "^0.19.0",
     "moment": "~2.5.0",
     "morgan": "^1.5.1",
     "request": "^2.48.0",