{
    "Function": "setInterestBatchManager",
    "File": "contracts/src/BorrowerOperations.sol",
    "Parent Contracts": [
        "contracts/src/Interfaces/IBorrowerOperations.sol",
        "contracts/src/Dependencies/AddRemoveManagers.sol",
        "contracts/src/Interfaces/IAddRemoveManagers.sol",
        "contracts/src/Dependencies/LiquityBase.sol",
        "contracts/src/Interfaces/ILiquityBase.sol"
    ],
    "High-Level Calls": [
        "ITroveManager",
        "IActivePool",
        "ISortedTroves",
        "ITroveManager",
        "ITroveManager",
        "ISortedTroves"
    ],
    "Internal Calls": [
        "_requireIsNotInBatch",
        "_requireIsNotShutDown",
        "_requireValidInterestBatchManager",
        "_requireTroveIsActive",
        "_applyUpfrontFee",
        "_requireCallerIsBorrower"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function setInterestBatchManager(\n        uint256 _troveId,\n        address _newBatchManager,\n        uint256 _upperHint,\n        uint256 _lowerHint,\n        uint256 _maxUpfrontFee\n    ) public override {\n        _requireIsNotShutDown();\n        LocalVariables_setInterestBatchManager memory vars;\n        vars.troveManager = troveManager;\n        vars.activePool = activePool;\n        vars.sortedTroves = sortedTroves;\n\n        _requireTroveIsActive(vars.troveManager, _troveId);\n        _requireCallerIsBorrower(_troveId);\n        _requireValidInterestBatchManager(_newBatchManager);\n        _requireIsNotInBatch(_troveId);\n\n        interestBatchManagerOf[_troveId] = _newBatchManager;\n        // Can\u2019t have both individual delegation and batch manager\n        if (interestIndividualDelegateOf[_troveId].account != address(0)) {\n            delete interestIndividualDelegateOf[_troveId];\n        }\n\n        vars.trove = vars.troveManager.getLatestTroveData(_troveId);\n        vars.newBatch = vars.troveManager.getLatestBatchData(_newBatchManager);\n\n        TroveChange memory newBatchTroveChange;\n        newBatchTroveChange.appliedRedistBoldDebtGain = vars.trove.redistBoldDebtGain;\n        newBatchTroveChange.appliedRedistCollGain = vars.trove.redistCollGain;\n        newBatchTroveChange.batchAccruedManagementFee = vars.newBatch.accruedManagementFee;\n        newBatchTroveChange.oldWeightedRecordedDebt =\n            vars.newBatch.weightedRecordedDebt +\n            vars.trove.weightedRecordedDebt;\n        newBatchTroveChange.newWeightedRecordedDebt =\n            (vars.newBatch.entireDebtWithoutRedistribution + vars.trove.entireDebt) *\n            vars.newBatch.annualInterestRate;\n\n        // An upfront fee is always charged upon joining a batch to ensure that borrowers can not game the fee logic\n        // and gain free interest rate updates (e.g. if they also manage the batch they joined)\n        // It checks the resulting ICR\n        vars.trove.entireDebt = _applyUpfrontFee(\n            vars.trove.entireColl,\n            vars.trove.entireDebt,\n            newBatchTroveChange,\n            _maxUpfrontFee,\n            true\n        );\n\n        // Recalculate newWeightedRecordedDebt, now taking into account the upfront fee\n        newBatchTroveChange.newWeightedRecordedDebt =\n            (vars.newBatch.entireDebtWithoutRedistribution + vars.trove.entireDebt) *\n            vars.newBatch.annualInterestRate;\n\n        // Add batch fees\n        newBatchTroveChange.oldWeightedRecordedBatchManagementFee = vars.newBatch.weightedRecordedBatchManagementFee;\n        newBatchTroveChange.newWeightedRecordedBatchManagementFee =\n            (vars.newBatch.entireDebtWithoutRedistribution + vars.trove.entireDebt) *\n            vars.newBatch.annualManagementFee;\n        vars.activePool.mintAggInterestAndAccountForTroveChange(newBatchTroveChange, _newBatchManager);\n\n        vars.troveManager.onSetInterestBatchManager(\n            ITroveManager.OnSetInterestBatchManagerParams({\n                troveId: _troveId,\n                troveColl: vars.trove.entireColl,\n                troveDebt: vars.trove.entireDebt,\n                troveChange: newBatchTroveChange,\n                newBatchAddress: _newBatchManager,\n                newBatchColl: vars.newBatch.entireCollWithoutRedistribution,\n                newBatchDebt: vars.newBatch.entireDebtWithoutRedistribution\n            })\n        );\n\n        vars.sortedTroves.remove(_troveId);\n        vars.sortedTroves.insertIntoBatch(\n            _troveId,\n            BatchId.wrap(_newBatchManager),\n            vars.newBatch.annualInterestRate,\n            _upperHint,\n            _lowerHint\n        );\n    }"
}