The _processProtocolFeeViaTransfer function attempts to transfer collateralProtocolFeeAmount to the collateralTreasury. However, since _handleCollateralTokensBeforeBuy transfers all the funds to the project treasury, no collateral remains in the funding manager, causing _buyOrder to revert.
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( |
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uint netDeposit, |
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uint collateralProtocolFeeAmount, |
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uint projectFeeAmount |
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) = _calculateNetAndSplitFees( |
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_depositAmount, collateralBuyFeePercentage, buyFee |
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); |
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// collateral Fee Amount is the combination of protocolFeeAmount plus the projectFeeAmount |
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collateralFeeAmount = collateralProtocolFeeAmount + projectFeeAmount; |
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// Calculate token amount based on upstream formula |
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uint issuanceTokenAmount = _issueTokensFormulaWrapper(netDeposit); |
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totalIssuanceTokenMinted = issuanceTokenAmount; |
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// Get net amount, protocol and project fee amounts. Currently there is no issuance project |
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// fee enabled |
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uint issuanceProtocolFeeAmount; |
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( |
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issuanceTokenAmount, |
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issuanceProtocolFeeAmount, /* projectFeeAmount */ |
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) = _calculateNetAndSplitFees( |
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issuanceTokenAmount, issuanceBuyFeePercentage, 0 |
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); |
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// Revert if the token amount is lower than the minimum amount the user expects |
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if (issuanceTokenAmount < _minAmountOut) { |
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revert Module__BondingCurveBase__InsufficientOutputAmount(); |
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} |
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// ------------------------------------------------------------ |
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// Interactions |
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// Handle collateral tokens before buy |
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_handleCollateralTokensBeforeBuy(_msgSender(), _depositAmount); |
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// Process protocol fee on incoming collateral tokens |
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_processProtocolFeeViaTransfer( |
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collateralTreasury, collateralToken, collateralProtocolFeeAmount |
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); |
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/// @inheritdoc BondingCurveBase_v1 |
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/// @dev Implementation transfer collateral tokens to the project treasury. |
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function _handleCollateralTokensBeforeBuy(address _provider, uint _amount) |
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internal |
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virtual |
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override |
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{ |
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IERC20(token()).safeTransferFrom(_provider, _projectTreasury, _amount); |
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} |
