added DataStore.getProjectDailyHours()

DataStore.py

@@ -120,6 +120,28 @@ FROM projects, tasks, hours
 WHERE hours.date = ?
   AND hours.taskid = tasks.id
   AND tasks.projectid = projects.id
+''', (date,))
+        for row in c:
+            pid, tid, secs = row
+            if not pid in hours:
+                hours[pid] = {}
+            if not tid in hours[pid]:
+                hours[pid] = {}
+            hours[pid][tid] = secs
+        c.close()
+        self.conn.commit()
+        return hours
+
+    def getProjectDailyHours(self, date):
+        hours = {}
+        c = self.conn.cursor()
+        c.execute('''
+SELECT projects.id, SUM(hours.seconds)
+FROM projects, tasks, hours
+WHERE hours.date = ?
+  AND hours.taskid = tasks.id
+  AND tasks.projectid = projects.id
+GROUP BY projects.id
 ''', (date,))
         for row in c:
             pid, tid, secs = row