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[Bank] Check recipient balance before completing transfer (#2925)

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* Fixed `[p]local start`
Playlist picker auto selects if theres just 1 playlist found
`[p]queue cleanself` added

Signed-off-by: Guy <guyreis96@gmail.com>

* Black.... you are supposed to trigger before commits

Signed-off-by: Guy <guyreis96@gmail.com>

* Added `BalanceTooHigh` to the docstrings of `bank.transfer_credits()`

Signed-off-by: guyre <27962761+drapersniper@users.noreply.github.com>

* Bring this in line with #2926 to reduce conflicts,`is_global()` already is called inside `get_currency_name` and as such it does not need to be called outside

Signed-off-by: guyre <27962761+drapersniper@users.noreply.github.com>
This commit is contained in:
Draper 2019-08-27 17:40:11 +01:00 committed by Michael H
parent 68018c924e
commit 2056f9f8d0
2 changed files with 11 additions and 5 deletions
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1
changelog.d/2923.bugfix.rst Normal file
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@ -0,0 +1 @@
Check the recipient balance before transferring and stop transfer if will go above the maximum allowed balance.

15
redbot/core/bank.py
View File

@ -186,11 +186,7 @@ async def set_balance(member: discord.Member, amount: int) -> int:
if amount < 0: if amount < 0:
raise ValueError("Not allowed to have negative balance.") raise ValueError("Not allowed to have negative balance.")
if amount > MAX_BALANCE: if amount > MAX_BALANCE:
currency = ( currency = await get_currency_name(member.guild)
await get_currency_name()
if await is_global()
else await get_currency_name(member.guild)
)
raise errors.BalanceTooHigh( raise errors.BalanceTooHigh(
user=member.display_name, max_balance=MAX_BALANCE, currency_name=currency user=member.display_name, max_balance=MAX_BALANCE, currency_name=currency
) )
@ -305,6 +301,9 @@ async def transfer_credits(from_: discord.Member, to: discord.Member, amount: in
If the amount is invalid or if ``from_`` has insufficient funds. If the amount is invalid or if ``from_`` has insufficient funds.
TypeError TypeError
If the amount is not an `int`. If the amount is not an `int`.
BalanceTooHigh
If the balance after the transfer would be greater than
``bank.MAX_BALANCE``
""" """
if not isinstance(amount, int): if not isinstance(amount, int):
@ -312,6 +311,12 @@ async def transfer_credits(from_: discord.Member, to: discord.Member, amount: in
if _invalid_amount(amount): if _invalid_amount(amount):
raise ValueError("Invalid transfer amount {} <= 0".format(amount)) raise ValueError("Invalid transfer amount {} <= 0".format(amount))
if await get_balance(to) + amount > MAX_BALANCE:
currency = await get_currency_name(to.guild)
raise errors.BalanceTooHigh(
user=to.display_name, max_balance=MAX_BALANCE, currency_name=currency
)
await withdraw_credits(from_, amount) await withdraw_credits(from_, amount)
return await deposit_credits(to, amount) return await deposit_credits(to, amount)