Merge pull request #149 from isocolsky/fix/pagination

Fix/pagination

README.md

@@ -47,10 +47,18 @@ Returns:
 
 `/v1/txhistory/`: Get Wallet's transaction history
  
+Optional Arguments:
+ * skip: Records to skip from the result (defaults to 0)
+ * limit: Total number of records to return (return all available records if not specified).
+ 
 Returns:
- *  History of incomming and outgoing transactions of the wallet. The list is returned complete (Pagination and filter are [ToDos](https://github.com/bitpay/bitcore-wallet-service/issues/121))
-Each item has the following fields:
-https://github.com/bitpay/bitcore-wallet-service/issues/121
+ * History of incomming and outgoing transactions of the wallet. The list is paginated using the `skip` & `limit` params. Each item has the following fields:
+ * action ('sent', 'received', 'moved')
+ * amount
+ * fees
+ * time
+ * addressTo
+ * confirmations
  * proposalId
  * creatorName
  * message

lib/server.js

@@ -913,12 +913,11 @@ WalletService.prototype._normalizeTxHistory = function(txs) {
 };
 
 /**
- * Retrieves all transactions (incoming & outgoing) in the range (maxTs-minTs)
+ * Retrieves all transactions (incoming & outgoing)
  * Times are in UNIX EPOCH
  *
  * @param {Object} opts
- * @param {Number} opts.minTs (defaults to 0)
- * @param {Number} opts.maxTs (defaults to now)
+ * @param {Number} opts.skip (defaults to 0)
  * @param {Number} opts.limit
  * @returns {TxProposal[]} Transaction proposals, first newer
  */
@@ -1003,17 +1002,14 @@ WalletService.prototype.getTxHistory = function(opts, cb) {
   };
 
   function paginate(txs) {
-    var limited = opts.limit && opts.limit != -1;
-    var minTs = opts.minTs || 0;
-    var maxTs = opts.maxTs || Math.ceil(Date.now() / 1000);
+    var skip = opts.skip || 0;
+    var limited = _.isNumber(opts.limit) && opts.limit != -1;
 
-    var filtered = _.sortBy(_.filter(txs, function(tx) {
-      return tx.time >= minTs && tx.time <= maxTs;
-    }), function(tx) {
+    var sliced = _.slice(_.sortBy(txs, function(tx) {
       return -tx.time;
-    });
+    }), skip);
 
-    return limited ? _.take(filtered, opts.limit) : filtered;
+    return limited ? _.take(sliced, opts.limit) : sliced;
   };
 
   // Get addresses for this wallet

package.json

@@ -2,7 +2,7 @@
   "name": "bitcore-wallet-service",
   "description": "A service for Mutisig HD Bitcoin Wallets",
   "author": "BitPay Inc",
-  "version": "0.0.10",
+  "version": "0.0.11",
   "keywords": [
     "bitcoin",
     "copay",

test/integration/server.js

@@ -2347,34 +2347,54 @@ describe('Copay server', function() {
     });
     it('should get various paginated tx history', function(done) {
       var testCases = [{
+        opts: {},
+        expected: [50, 40, 30, 20, 10],
+      }, {
         opts: {
-          minTs: 15,
-          maxTs: 45,
+          skip: 1,
+          limit: 3,
         },
         expected: [40, 30, 20],
       }, {
         opts: {
-          minTs: 15,
-          maxTs: 45,
+          skip: 1,
           limit: 2,
         },
         expected: [40, 30],
       }, {
         opts: {
-          maxTs: 35,
+          skip: 2,
         },
         expected: [30, 20, 10],
       }, {
         opts: {
-          minTs: 15,
+          limit: 4,
         },
         expected: [50, 40, 30, 20],
       }, {
         opts: {
-          minTs: 15,
+          skip: 0,
           limit: 3,
         },
         expected: [50, 40, 30],
+      }, {
+        opts: {
+          skip: 0,
+          limit: 0,
+        },
+        expected: [],
+      }, {
+        opts: {
+          skip: 4,
+          limit: 20,
+        },
+        expected: [10],
+      }, {
+        opts: {
+          skip: 20,
+          limit: 1,
+        },
+        expected: [],
       }];
 
       server._normalizeTxHistory = sinon.stub().returnsArg(0);