The sum in error message must include a fee

[jurijakimuk]

Bug description
When sending UTXO's and there are no available funds - the error message that shows the available amount of funds does not take into accout the fee.

To Reproduce
Preconditions:
A desktop wallet is installed and running.
There are some funds in the wallet.

1. Navigate to the Send screen.
2. Enter the amount that is slightly higher than available and a fee.
3. Check the amount specified in the error message below the entered sum.

Current behaviour
The fee is not taken into account.

Expected behaviour
The fee is taken into account.

Platform and build

• Windows
• 10 x64
• 4193 masternet

Screenshots (if applicable)

[sasha-abramovich]

@alexandrashelenkova please provide a screenshot on how it should be done.

[sasha-abramovich]

suggested wording so far:
Insufficient funds: you would need XXX groth to complete the transaction.

[alexandrashelenkova]

Here are some ideas that we might have use in the future
var 1
zpl.io/boKJnpZ
zpl.io/a3grZAY
zpl.io/2vKjLR7

var 2
zpl.io/bldO4KG
zpl.io/awW5BzM
zpl.io/29oGgmy

[jurijakimuk]

@sasha-abramovich Please see the screenshot below and decide how we display the amount in the warning message:

8_500_000_010 groths or 85 beams 10 groths ?
Thanks.

[sasha-abramovich]

When the amount is more than 5 digits groths please use beams - the devs should be aware of that "agreement" :)

[jurijakimuk]

@anatolse Anatol, please implement the logic of how the amount in the warning message is displayed. The amount up to 99999 groths is displayed in groths, e.g. "Insufficient funds: you would need 99999 groths to complete the transaction." (for 99999 groths) or "Insufficient funds: you would need 22 groths to complete the transaction." (for 22 groths)
The amount more than 99999 groths is displayed in beams, e.g. "Insufficient funds: you would need 0.00100055 beams to complete the transaction." (for 100055 groths) or "Insufficient funds: you would need 2.00204444 beams to complete the transaction." (for 200204444 groths)

[jurijakimuk]

Works OK, tested on 4357, master