added getNumCardsReviewedByDay action (#239)

* added getNumCardsReviewedByDay action

* added sample in statistics.md

* fix bad quotes and add basic test

actions/statistics.md

@@ -20,6 +20,29 @@
     }
     ```
 
+*   **getNumCardsReviewedByDay**
+
+    Gets the number of cards reviewed as a list of pairs of `(dateString, number)`
+
+    *Sample request*:
+    ```json
+     {
+        "action": "getNumCardsReviewedByDay",
+        "version": 6,
+    }
+    ```
+
+    *Sample result*:
+    ```json
+    {
+        "result":  [
+            ["2021-02-28", 124],
+            ["2021-02-27", 261]
+        ],
+        "error": null
+    }
+    ```
+
 *   **getCollectionStatsHTML**
 
     Gets the collection statistics report

plugin/__init__.py

@@ -351,6 +351,11 @@ class AnkiConnect:
     def getNumCardsReviewedToday(self):
         return self.database().scalar('select count() from revlog where id > ?', (self.scheduler().dayCutoff - 86400) * 1000)
 
+    @util.api()
+    def getNumCardsReviewedByDay(self):
+        return self.database().all('select date(id/1000 - ?, "unixepoch", "localtime") as day, count() from revlog group by day order by day desc',
+                                    int(time.strftime("%H", time.localtime(self.scheduler().dayCutoff))) * 3600)
+
 
     @util.api()
     def getCollectionStatsHTML(self, wholeCollection=True):

tests/test_stats.py

@@ -28,6 +28,10 @@ class TestStats(unittest.TestCase):
         result = util.invoke('getNumCardsReviewedToday')
         self.assertIsInstance(result, int)
 
+        # getNumCardsReviewedByDay
+        result = util.invoke('getNumCardsReviewedByDay')
+        self.assertIsInstance(result, list)
+
         # collectionStats
         result = util.invoke('getCollectionStatsHTML')
         self.assertIsInstance(result, str)