{
    "Function": "repay",
    "File": "contracts/vaults/NFTVault.sol",
    "Parent Contracts": [
        "node_modules/@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol",
        "node_modules/@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol",
        "node_modules/@openzeppelin/contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol",
        "node_modules/@openzeppelin/contracts-upgradeable/utils/introspection/IERC165Upgradeable.sol",
        "node_modules/@openzeppelin/contracts-upgradeable/access/IAccessControlUpgradeable.sol",
        "node_modules/@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol",
        "node_modules/@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol"
    ],
    "High-Level Calls": [
        "IStableCoin"
    ],
    "Internal Calls": [
        "accrue",
        "require(bool,string)",
        "require(bool,string)",
        "nonReentrant",
        "require(bool,string)",
        "require(bool,string)",
        "validNFTIndex",
        "_getDebtAmount"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function repay(uint256 _nftIndex, uint256 _amount)\n        external\n        validNFTIndex(_nftIndex)\n        nonReentrant\n    {\n        accrue();\n\n        require(msg.sender == positionOwner[_nftIndex], \"unauthorized\");\n        require(_amount > 0, \"invalid_amount\");\n\n        Position storage position = positions[_nftIndex];\n        require(position.liquidatedAt == 0, \"liquidated\");\n\n        uint256 debtAmount = _getDebtAmount(_nftIndex);\n        require(debtAmount > 0, \"position_not_borrowed\");\n\n        uint256 debtPrincipal = position.debtPrincipal;\n        uint256 debtInterest = debtAmount - debtPrincipal;\n\n        _amount = _amount > debtAmount ? debtAmount : _amount;\n\n        // burn all payment, the interest is sent to the DAO using the {collect} function\n        stablecoin.burnFrom(msg.sender, _amount);\n\n        uint256 paidPrincipal = _amount > debtInterest\n            ? _amount - debtInterest\n            : 0;\n\n        uint256 minusPortion = paidPrincipal == debtPrincipal\n            ? position.debtPortion\n            : (totalDebtPortion * _amount) / totalDebtAmount;\n\n        totalDebtPortion -= minusPortion;\n        position.debtPortion -= minusPortion;\n        position.debtPrincipal -= paidPrincipal;\n        totalDebtAmount -= _amount;\n\n        emit Repaid(msg.sender, _nftIndex, _amount);\n    }"
}