fix agenda.every overwriting nextRunAt [closes #70]

agenda-test.js

@@ -0,0 +1,25 @@
+var connStr = 'mongodb://localhost/agenda-test';
+var Agenda = require('agenda');
+
+var agenda = new Agenda({db: { address: connStr } });
+
+agenda.define('5 minutes job', function(job, done) {
+  console.log("Running 5 minutes job");
+  done();
+});
+
+agenda.define('10 minutes job', function(job, done) {
+  console.log("Running 10 minutes job");
+  done();
+});
+
+agenda.define('once a day job', function(job, done) {
+  console.log('ONCE A DAY RUNNING');
+  done();
+});
+
+agenda.every('5 minutes', '5 minutes job');
+agenda.every('10 minutes', '10 minutes job');
+agenda.every('0 5 * * 1-5', 'once a day job');
+
+agenda.start();

lib/agenda.js

@@ -170,16 +170,28 @@ Agenda.prototype.saveJob = function(job, cb) {
   delete props._id;
 
   props.lastModifiedBy = this._name;
+
+  var now = new Date(),
+      protect = {},
+      update;
+
+  if(props.nextRunAt && props.nextRunAt <= now) {
+    protect.nextRunAt = props.nextRunAt;
+    delete props.nextRunAt;
+  }
+
+  update = { $set: props };
+
+  if (Object.keys(protect).length > 0) {
+    update.$setOnInsert = protect;
+  }
 
   if(id) {
-    if(props.type == 'single' && props.nextRunAt && props.nextRunAt <= new Date()) {
-      delete props.nextRunAt;
-    }
-    this._db.findAndModify({_id: id}, {}, {$set: props}, {new: true}, processDbResult);
+    this._db.findAndModify({_id: id}, {}, update, {new: true}, processDbResult);
   }
   else if(props.type == 'single') {
     // Try an upsert.
-    this._db.findAndModify({name: props.name, type: 'single'}, {}, {$set: props}, {upsert: true, new: true}, processDbResult);
+    this._db.findAndModify({name: props.name, type: 'single'}, {}, update, {upsert: true, new: true}, processDbResult);
   } else {
     this._db.insert(props, processDbResult);
   }