[$50] We should not allow increasing Working Days more than fit Resource Booking

[maxceem]

To implement this we have to create a reusable method which would return maximum allowed daysWorked for the WorkPeriod inside Resource Booking.

• The logic how we calculate daysWorked is described here https://github.com/topcoder-platform/taas-apis/wiki/Work-Periods-(WP)-Automation-and-Constraints#resourcebooking-is-created
• Also, we implemented a similar logic sever-side which may be used for reference https://github.com/topcoder-platform/taas-apis/blob/dev/src/common/helper.js#L1776-L1810 (note, that on server this method calculates all work periods for the ResourceBookings, but we need just to get the maximum allowed daysWorked for one Work Period)
• After having this method we should not allow to increase the Working Days more than possible value for each Work Period.

Tooltips:

• we already cannot decrease the number of working days to be less than daysPaid
• we have to explain to the user why they cannot decrease or increase the working days number by showing the reason in Tooltip
• to do so we have to show tooltip with the reason when the user hover mouse on the - or + buttons (only when they cannot press them):
  • Cannot decrease "Working Days" to less than day already paid: ${daysPaid}
  • Cannot increase "Working Days" because the end date of the Resource Booking is ${RB.endDate}

[maxceem]

Additionally disabled decrease button when the current value is 0 because we cannot make it less. We don't show tooltip in such case, because the reason for disabling button is clear.

[sandhiyakavi]

@maxceem I am able to see some '+' and '-' are slightly bolder than others.

Other than above, functionality wise everything is working fine.

[maxceem]

@sandhiyakavi I believe the issue with bolder - and + is a different existent issue and it's not connected with the functionality we implemented in this issue. Can we track it separately? Also, could you, please, mention your browser and operation system, I believe it only happens on some OS and browser, as it doesn't happen to me.