SolarNetwork Aggregate Query Tool

This is a small node utility that can export SolarNetwork data as CSV,
aggregated by date. The tool will query SolarNetwork for data based
on the provided arguments, and then combine all result rows that
occur on the same date into a single aggregate sum result for that
date.

For example, if a raw query were to return data like

``csv
created,nodeId,sourceId,wattHours
"2017-01-01 00:00:00.000Z",123,"A",1000.0
"2017-01-01 00:00:00.000Z",123,"B",555.0
`

this tool would combine those two rows because they have the same
created value into a single row like this:

`csv
created,nodeId,wattHours
"2017-01-01 00:00:00.000Z",123,1555.0
`

Notice the wattHours value is the aggregate sum of the two raw
records.

Usage

`
Usage: node sn-agg-query.js [OPTION] [query]

Combine query results by date, adding their values together.
Alternatively, can output the raw data without aggregation.

-r, --raw output raw, unaggregated results
-n, --node=ID the node ID
-p, --source=ID+ a source ID (can be provided more than once)
-s, --start=DATE the starting date, as yyyy-MM-dd HH:mm
-e, --end=DATE the ending date, as yyyy-MM-dd HH:mm
-a, --aggregation=AGG the aggregate level, e.g. Hour
-h, --help show this help
`

Note that multiple source` arguments may be provided, for example

node sn-agg-query.js --node=123 --source=A --source=B ...

Development

This tool was created as a demonstration of using the [SolarNetwork API
Core][core] and [SolarNetwork Datum Loader][loader] packages.

[core]: https://github.com/SolarNetwork/sn-api-core-js
[loader]: https://github.com/SolarNetwork/sn-datum-loader-js