I need to write the code for size based bucketting in mongo db

my model data is like

{ sensor_id: 12345, timestamp: ISODate("2019-01-31T10:00:00.000Z"), temperature: 40 }

{ sensor_id: 12345, timestamp: ISODate("2019-01-31T10:01:00.000Z"), temperature: 40 }

{ sensor_id: 12345, timestamp: ISODate("2019-01-31T10:02:00.000Z"), temperature: 41 }

and expected output is like:

{

sensor_id: 12345,

start_date: ISODate("2019-01-31T10:00:00.000Z"),

end_date: ISODate("2019-01-31T10:59:59.000Z"),
measurements: [
   {
   timestamp: ISODate("2019-01-31T10:00:00.000Z"),
   temperature: 40
   },
   {
   timestamp: ISODate("2019-01-31T10:01:00.000Z"),
   temperature: 40
   },
   … 
   {
   timestamp: ISODate("2019-01-31T10:42:00.000Z"),
   temperature: 42
   }
],

transaction_count: 42, sum_temperature: 2413 }

I have some different data set but actual problem is to use $facet with giving the start time and end time for size based bucketting in mongodb.