feat: update AggregateToken (#90)

nest/src/AggregateToken.sol

@@ -3,6 +3,7 @@ pragma solidity ^0.8.25;
 
 import { IERC20 } from "@openzeppelin/contracts/interfaces/IERC20.sol";
 import { IERC4626 } from "@openzeppelin/contracts/interfaces/IERC4626.sol";
+import { ERC1155Holder } from "@openzeppelin/contracts/token/ERC1155/utils/ERC1155Holder.sol";
 
 import { ComponentToken } from "./ComponentToken.sol";
 import { IAggregateToken } from "./interfaces/IAggregateToken.sol";
@@ -13,7 +14,7 @@ import { IComponentToken } from "./interfaces/IComponentToken.sol";
  * @author Eugene Y. Q. Shen
  * @notice Implementation of the abstract ComponentToken that represents a basket of ComponentTokens
  */
-contract AggregateToken is ComponentToken, IAggregateToken {
+contract AggregateToken is ComponentToken, IAggregateToken, ERC1155Holder {
 
     // Storage
 
@@ -218,6 +219,21 @@ contract AggregateToken is ComponentToken, IAggregateToken {
         emit ComponentTokenSold(msg.sender, componentToken, componentTokenAmount, assets);
     }
 
+    /**
+     * @notice Request to sell ComponentToken.
+     * @dev Only the owner can call this function. This function requests the sale of ComponentToken, which will be processed later.
+     *
+     * @param componentToken ComponentToken to sell
+     * @param componentTokenAmount Amount of ComponentToken to sell
+     */
+    function requestSellComponentToken(
+        IComponentToken componentToken,
+        uint256 componentTokenAmount
+    ) public onlyRole(ADMIN_ROLE) {
+        uint256 requestId = componentToken.requestRedeem(componentTokenAmount, address(this), address(this));
+        emit ComponentTokenSellRequested(msg.sender, componentToken, componentTokenAmount, requestId);
+    }
+
     // Admin Setter Functions
 
     /**
@@ -270,4 +286,9 @@ contract AggregateToken is ComponentToken, IAggregateToken {
         return _getAggregateTokenStorage().componentTokenMap[componentToken];
     }
 
+    function supportsInterface(
+        bytes4 interfaceId
+    ) public view virtual override(ComponentToken, ERC1155Holder) returns (bool) {
+        return super.supportsInterface(interfaceId);
+    }
 }

nest/src/interfaces/IAggregateToken.sol

@@ -40,5 +40,17 @@ interface IAggregateToken is IComponentToken {
     event ComponentTokenSold(
         address indexed owner, IComponentToken indexed componentToken, uint256 componentTokenAmount, uint256 assets
     );
+
+    /**
+     * @notice Emitted when the owner requests to sell a ComponentToken.
+     *
+     * @param owner Address of the owner who requested to sell the ComponentToken.
+     * @param componentToken ComponentToken that was requested to be sold.
+     * @param componentTokenAmount Amount of ComponentToken requested to be sold.
+     * @param requestId The ID of the sell request.
+     */
+    event ComponentTokenSellRequested(
+        address indexed owner, IComponentToken indexed componentToken, uint256 componentTokenAmount, uint256 requestId
+    );
 
 }