api_get_timeseries: Get Timeseries Data from the Postgres Database Via API
In KWB-R/fhpredict: R Package for the Project Flusshygiene

This function calls postgres_get to get data from the endpoint given by path and calls fhpredict:::flatten_recursive_list to convert the list structure into a data frame. The time columns "createdAt" and "updatedAt" are converted from a text timestamp given in ISO 8601 format (e.g. "2019-10-22T23:38:29.003Z") to POSIXct objects in time zone "Europe/Berlin". A new POSIXct column dateTime is created from the original text columns date and dateTime as they are returned by the API:

(original) date column: date and time information as text, e.g. "2019-09-21T00:00:00.000Z"
(original) dateTime column: only time information as text, e.g. "10:50:00"
(new) dateTime column: date and time as POSIXct in time zone "Europe/Berlin"

api_get_timeseries(
  path,
  subject = "timeseries",
  sort = TRUE,
  token = NULL,
  type = NULL
)

`path`	(relative) path to API endpoint
`subject`	name of data subject, to be used in messages
`sort`	if `TRUE` (the default), the returned data frame will be sorted by the "dateTime" column
`token`	passed to `fhpredict:::postgres_request`
`type`	optional. If given, columns are removed and reordered using `fhpredict:::remove_and_reorder_columns()`