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Refactor commission and exchange rate calculations in transaction processing: update logic to derive base crypto amount from total crypto, enhance logging to reflect base amounts for DCA distribution, and ensure accurate client share calculations based on base amounts.

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padreug 2025-06-18 16:36:53 +02:00
parent ba03953291
commit 33b148415f
1 changed files with 11 additions and 10 deletions
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21
transaction_processor.py
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@ -505,21 +505,22 @@ class LamassuTransactionProcessor:
# Calculate effective commission percentage after discount (following the reference logic) # Calculate effective commission percentage after discount (following the reference logic)
if commission_percentage > 0: if commission_percentage > 0:
effective_commission = commission_percentage * (100 - discount) / 100 effective_commission = commission_percentage * (100 - discount) / 100
# Calculate commission amount in satoshis using int() to round down # Since crypto_atoms already includes commission, we need to extract the base amount
commission_amount_sats = int(crypto_atoms * effective_commission) # Formula: crypto_atoms = base_amount * (1 + effective_commission)
# Therefore: base_amount = crypto_atoms / (1 + effective_commission)
base_crypto_atoms = int(crypto_atoms / (1 + effective_commission))
commission_amount_sats = crypto_atoms - base_crypto_atoms
else: else:
effective_commission = 0.0 effective_commission = 0.0
base_crypto_atoms = crypto_atoms
commission_amount_sats = 0 commission_amount_sats = 0
# Calculate net crypto amount (what should be distributed to DCA clients) # Calculate exchange rate based on base amounts
net_crypto_atoms = crypto_atoms - commission_amount_sats exchange_rate = base_crypto_atoms / fiat_amount if fiat_amount > 0 else 0 # sats per fiat unit
# Calculate exchange rate based on net amounts
exchange_rate = net_crypto_atoms / fiat_amount if fiat_amount > 0 else 0 # sats per fiat unit
logger.info(f"Transaction - Total crypto: {crypto_atoms} sats") logger.info(f"Transaction - Total crypto: {crypto_atoms} sats")
logger.info(f"Commission: {commission_percentage*100:.1f}% - {discount:.1f}% discount = {effective_commission*100:.1f}% effective ({commission_amount_sats} sats)") logger.info(f"Commission: {commission_percentage*100:.1f}% - {discount:.1f}% discount = {effective_commission*100:.1f}% effective ({commission_amount_sats} sats)")
logger.info(f"Net for DCA: {net_crypto_atoms} sats, Fiat dispensed: {fiat_amount}, Exchange rate: {exchange_rate:.2f} sats/fiat_unit") logger.info(f"Base for DCA: {base_crypto_atoms} sats, Fiat dispensed: {fiat_amount}, Exchange rate: {exchange_rate:.2f} sats/fiat_unit")
# Get balance summaries for all clients to calculate proportions # Get balance summaries for all clients to calculate proportions
client_balances = {} client_balances = {}
@ -542,8 +543,8 @@ class LamassuTransactionProcessor:
# Calculate this client's proportion of the total DCA pool # Calculate this client's proportion of the total DCA pool
proportion = client_balance / total_confirmed_deposits proportion = client_balance / total_confirmed_deposits
# Calculate client's share of the net crypto (after commission) # Calculate client's share of the base crypto (after commission)
client_sats_amount = int(net_crypto_atoms * proportion) client_sats_amount = int(base_crypto_atoms * proportion)
# Calculate equivalent fiat value for tracking purposes # Calculate equivalent fiat value for tracking purposes
client_fiat_amount = int(client_sats_amount / exchange_rate) if exchange_rate > 0 else 0 client_fiat_amount = int(client_sats_amount / exchange_rate) if exchange_rate > 0 else 0