Submissions per day, month or year

How many submissions arrived per period, split into accepted and spam, across the forms the caller can read (their own and any a teammate shared with the workspace). Counted in the database, so a form with more than 500 submissions is counted in full. Periods are cut in the viewer's timezone, not UTC, and a period with nothing in it is returned as zero, so the series has no gaps. day lists every day of the anchor's month; month the 12 months ending with the anchor's month; year every year from the first to the last that has a submission (the anchor is ignored), or the anchor's year alone when there are none.

curl -X GET "https://example.com/v1/analytics?view=day&tz=Asia%2FKolkata"

{  "view": "day",  "tz": "string",  "buckets": [    {      "date": "2019-08-24",      "submissions": 0,      "spam": 0    }  ]}