# BaseStrategy

The `BaseStrategy` provides a foundation for creating ERC-4626 compliant vaults, which integrate seamlessly with a `TokenizedStrategy` implementation contract. This structure allows for ease in developing customizable strategies while maintaining a consistent interface and functionality through delegation.

### **Modifiers**

* **onlySelf**: Ensures that the function is called internally by the strategy itself, typically to confirm actions are a result of delegate calls from the strategy to the `TokenizedStrategy`.
* **onlyManagement**: Verifies that the caller is authorized under the strategy’s management role, controlling strategy operational parameters.
* **onlyKeepers**: Restricts function access to authorized keepers or management, facilitating routine maintenance and operational tasks.
* **onlyEmergencyAuthorized**: Limits access to emergency functions to addresses with emergency authorization, enhancing security and control in crisis situations.

### **Immutable Variables**

* **tokenizedStrategyAddress**: Address of the `TokenizedStrategy` implementation used across all strategies for handling logic and storage.
* **TokenizedStrategy**: A reference to the `TokenizedStrategy` instance, treating the strategy as if it’s a library for internal function calls.
* **asset**: The ERC20 token that the strategy operates on, used for yield-generating activities.

### **Functions to Override**

* **\_deployFunds(uint256 \_amount)**: Handles the deployment of specified amounts of the asset into yield-generating positions.
* **\_freeFunds(uint256 \_amount)**: Designed to release funds from investment positions, adjusting the strategy’s asset allocation.
* **\_harvestAndReport()**: Gathers yield and rebalances the strategy’s assets to reflect the actual holdings accurately.

### **Optional Functions to Override**

* **\_tend(uint256 \_totalIdle)**: Manages the strategy’s assets between reporting periods, optimizing yield generation and position management.
* **\_tendTrigger()**: Indicates whether the `_tend` function should be invoked, based on specific strategy conditions or thresholds.

### **TokenizedStrategy Integration**

* **deployFunds(uint256 \_amount)**: Delegates fund deployment to the `TokenizedStrategy`, allowing it to handle the specifics of asset investment.
* **freeFunds(uint256 \_amount)**: Delegates the release of funds to the `TokenizedStrategy`, ensuring that withdrawal requests are honored efficiently.
* **harvestAndReport()**: Provides an accurate and updated accounting of the strategy’s total assets, delegating reporting to the `TokenizedStrategy`.

### **Strategy Management and Maintenance**

* **tendThis(uint256 \_totalIdle)**: Facilitates the active management of the strategy’s resources, optimizing asset allocation and performance.
* **shutdownWithdraw(uint256 \_amount)**: Allows for the strategic withdrawal of funds in emergency scenarios, managed through the `TokenizedStrategy` to ensure consistency and reliability.

### **Security and Delegation Features**

* **\_delegateCall(bytes memory \_calldata)**: Facilitates direct interactions with the `TokenizedStrategy` by forwarding calls and handling returned data or errors.
* **fallback()**: Ensures all unspecified calls or data sent to the strategy are forwarded to the `TokenizedStrategy`, leveraging its logic and storage capabilities.