adds listByActivity method & hidden filters to list methods

lib/phant-meta-json.js

@@ -47,13 +47,35 @@ function PhantMeta(config) {
 
 }
 
-app.name = 'phant json metadata storage';
+app.name = 'Metadata JSON';
 app.directory = path.join(__dirname, '..');
 
 app.newId = function() {
   return uuid.v1().replace(/-/g, '');
 };
 
+function reverseSort(field) {
+
+  return function(a, b) {
+
+    if(a[field] === b[field]) {
+      return 0;
+    }
+
+    if(! a[field]) {
+      return -1;
+    }
+
+    if(! b[field]) {
+      return 1;
+    }
+
+    return b[field] - a[field];
+
+  };
+
+}
+
 app.getStreams = function(callback) {
 
   var file = path.join(this.directory, 'streams.json');
@@ -108,7 +130,13 @@ app.list = function(callback, offset, limit) {
 
   this.getStreams(function(streams) {
 
-    callback('', streams.slice(offset, limit + offset));
+    var result = _.filter(streams, function(stream) {
+
+      return !stream.hidden && !stream.flagged;
+
+    }).sort(reverseSort('date'));
+
+    callback('', result.slice(offset, limit + offset));
 
   });
 
@@ -122,8 +150,29 @@ app.listByTag = function(tag, callback, offset, limit) {
   this.getStreams(function(streams) {
 
     var result = _.filter(streams, function(stream) {
-      return _.contains(stream.tags, tag);
-    });
+
+      return !stream.hidden && !stream.flagged && _.contains(stream.tags, tag);
+
+    }).sort(reverseSort('date'));
+
+    callback('', result.slice(offset, limit + offset));
+
+  });
+
+};
+
+app.listByActivity = function(callback, offset, limit) {
+
+  limit = limit || 20;
+  offset = offset || 0;
+
+  this.getStreams(function(streams) {
+
+    var result = _.filter(streams, function(stream) {
+
+      return !stream.hidden && !stream.flagged;
+
+    }).sort(reverseSort('last_push'));
 
     callback('', result.slice(offset, limit + offset));