Adjust sandwiches profit calculation
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@ -42,32 +42,37 @@ def _get_sandwich_starting_with_swap(
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]:
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return None
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for other_swap in rest_swaps:
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if other_swap.transaction_hash == front_swap.transaction_hash:
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for back_swap in rest_swaps:
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if back_swap.transaction_hash == front_swap.transaction_hash:
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continue
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if other_swap.contract_address == front_swap.contract_address:
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if back_swap.contract_address == front_swap.contract_address:
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if (
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other_swap.token_in_address == front_swap.token_in_address
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and other_swap.token_out_address == front_swap.token_out_address
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and other_swap.from_address != sandwicher_address
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back_swap.token_in_address == front_swap.token_in_address
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and back_swap.token_out_address == front_swap.token_out_address
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and back_swap.from_address != sandwicher_address
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):
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sandwiched_swaps.append(other_swap)
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sandwiched_swaps.append(back_swap)
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elif (
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other_swap.token_out_address == front_swap.token_in_address
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and other_swap.token_in_address == front_swap.token_out_address
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and other_swap.from_address == sandwicher_address
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back_swap.token_out_address == front_swap.token_in_address
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and back_swap.token_in_address == front_swap.token_out_address
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and back_swap.from_address == sandwicher_address
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):
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if len(sandwiched_swaps) > 0:
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if back_swap.token_in_amount == 0 and back_swap.error is None:
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raise ValueError("Backrun cannot swap 0 tokens")
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exchange_rate = front_swap.token_out_amount / back_swap.token_in_amount
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profit_amount = exchange_rate * back_swap.token_out_amount - front_swap.token_in_amount
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return Sandwich(
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block_number=front_swap.block_number,
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sandwicher_address=sandwicher_address,
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frontrun_swap=front_swap,
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backrun_swap=other_swap,
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backrun_swap=back_swap,
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sandwiched_swaps=sandwiched_swaps,
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profit_token_address=front_swap.token_in_address,
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profit_amount=other_swap.token_out_amount
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- front_swap.token_in_amount,
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)
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profit_amount=profit_amount,
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)
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return None
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