feat: update interface

remappings.txt

@@ -1,3 +1,4 @@
 @openzeppelin/=lib/openzeppelin-contracts
+@openzeppelin-upgradeable/=lib/openzeppelin-contracts-upgradeable
 ds-test/=lib/forge-std/lib/ds-test/src/
 forge-std/=lib/forge-std/src/

src/Follow.sol

@@ -2,6 +2,22 @@
 pragma solidity 0.8.22;
 
 import {IFollow} from "./interfaces/IFollow.sol";
-import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+import {
+    ERC20Upgradeable
+} from "@openzeppelin-upgradeable/contracts/token/ERC20/ERC20Upgradeable.sol";
 
-//contract Follow is IFollow, ERC20 {}
+contract Follow is IFollow, ERC20Upgradeable {
+    /// @inheritdoc IFollow
+    function initialize(string calldata name_, string calldata symbol_) external initializer {
+        super.__ERC20_init(name_, symbol_);
+    }
+
+    /// @inheritdoc IFollow
+    function mint(address to) external override {}
+
+    /// @inheritdoc IFollow
+    function tip(address from, uint256 amount, bytes32 feedId) external override {}
+
+    /// @inheritdoc IFollow
+    function withdraw(address to, uint256 amount) external override {}
+}

src/interfaces/IFollow.sol

@@ -3,33 +3,18 @@ pragma solidity 0.8.22;
 
 interface IFollow {
     /**
-     * @notice Register a new account.
-     * @dev Only ADMIN_ROLE is allowed to call this method.
-     * @param userId The new user ID to register.
+     * @notice Initializes the contract.
+     * @param name_ The token name.
+     * @param symbol_ The token symbol.
      */
-    function register(bytes32 userId, address account) external returns (address);
+    function initialize(string calldata name_, string calldata symbol_) external;
 
     /**
      * @notice Mints new tokens.
      * @param to The account to receive the tokens.
      */
     function mint(address to) external;
 
-    /**
-     * @notice Creates a feed.
-     * @dev Only ADMIN_ROLE is allowed to call this method.
-     * @param feedId The feed id.
-     * @param userId The user ID who owns the feed.
-     */
-    function createFeed(bytes32 feedId, bytes32 userId) external;
-
-    /**
-     * @notice Returns the feed owner.
-     * @param feedId The feed id.
-     * @return userId The user ID who owns the feed.
-     */
-    function getFeedOwner(bytes32 feedId) external view returns (bytes32 userId);
-
     /**
      * @notice Tips the recipient feed.
      * @param from The address who sends the tip.