Temp basal calculation - profile_data.current_basal

[infoneo]

Currently temp basal is calculated by:

var rate = profile_data.current_basal - (2 * insulinReq);

profile_data.current_basal should be substituted by variable - calculation of predicted (30-min) basal.
Calculation of predicted 30-min basal is essential, because temp basal could be applied on top of two different basals.

For example:
1.00 - 2.00 - basal 0,9
2.00 - 3.00 - basal 1,2

When we apply temp basal at 1:59, temp basal will be calculated by adding/substracting insulinReq from "0,9" basal in spite that 30-temp basal mainly acts over the "1,2" basal.

[scottleibrand]

That would be a good idea. I think it might require passing more info into determine-basal.js than we're doing today, though. If you know of a good way to accomplish it, feel free to make the change on your fork and submit a pull request. Otherwise, sounds like @loudnate has some code that accomplishes something similar in his basal calculator script (albeit for percent basals instead of absolute), so we could probably fix this by (im)porting that code as well...