{
    "Function": "distributeRewards",
    "File": "contracts/UpsideStaking.sol",
    "Parent Contracts": [
        "node_modules/@openzeppelin/contracts/access/Ownable.sol",
        "node_modules/@openzeppelin/contracts/utils/Context.sol"
    ],
    "High-Level Calls": [
        "SafeERC20"
    ],
    "Internal Calls": [
        "revert TokenNotWhitelisted()"
    ],
    "Library Calls": [
        "safeTransferFrom"
    ],
    "Low-Level Calls": [],
    "Code": "function distributeRewards(address _metaCoinAddress, uint256 _rewardTokenAmount) external {\n        if (!whitelistedStakingTokens[_metaCoinAddress]) revert TokenNotWhitelisted();\n\n        uint256 _totalSupply = totalSupplies[_metaCoinAddress];\n        if (_totalSupply == 0) {\n            // If no tokens are staked, add the reward amount to protocol fees.\n            protocolFees[_metaCoinAddress] += _rewardTokenAmount;\n            emit RewardDistributed(_metaCoinAddress, _rewardTokenAmount, false);\n        } else {\n            // Otherwise, update the reward index for the token.\n            rewardIndex[_metaCoinAddress] += (_rewardTokenAmount * MULTIPLIER) / _totalSupply;\n            emit RewardDistributed(_metaCoinAddress, _rewardTokenAmount, true);\n        }\n        IERC20Metadata(_metaCoinAddress).safeTransferFrom(msg.sender, address(this), _rewardTokenAmount);\n    }"
}