staking/contracts/StakeVault.sol

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// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.26;
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import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { IStakeManager } from "./IStakeManager.sol";
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import { StakeManager } from "./StakeManager.sol";
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/**
* @title StakeVault
* @author Ricardo Guilherme Schmidt <ricardo3@status.im>
* @notice Secures user stake
*/
contract StakeVault is Ownable {
error StakeVault__MigrationNotAvailable();
error StakeVault__StakingFailed();
error StakeVault__UnstakingFailed();
IStakeManager private stakeManager;
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IERC20 public immutable STAKING_TOKEN;
event Staked(address from, address to, uint256 _amount, uint256 time);
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constructor(address _owner, IERC20 _STAKING_TOKEN, IStakeManager _stakeManager) {
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_transferOwnership(_owner);
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STAKING_TOKEN = _STAKING_TOKEN;
stakeManager = _stakeManager;
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}
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function stake(uint256 _amount, uint256 _time) external onlyOwner {
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bool success = STAKING_TOKEN.transferFrom(msg.sender, address(this), _amount);
if (!success) {
revert StakeVault__StakingFailed();
}
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stakeManager.stake(_amount, _time);
emit Staked(msg.sender, address(this), _amount, _time);
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}
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function lock(uint256 _time) external onlyOwner {
stakeManager.lock(_time);
}
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function unstake(uint256 _amount) external onlyOwner {
stakeManager.unstake(_amount);
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bool success = STAKING_TOKEN.transfer(msg.sender, _amount);
if (!success) {
revert StakeVault__UnstakingFailed();
}
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}
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function leave() external onlyOwner {
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if (StakeManager(stakeManager).leave()) {
STAKING_TOKEN.transferFrom(address(this), msg.sender, STAKING_TOKEN.balanceOf(address(this)));
}
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}
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/**
* @notice Opt-in migration to a new IStakeManager contract.
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*/
function acceptMigration() external onlyOwner {
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IStakeManager migrated = StakeManager(stakeManager).acceptUpdate();
if (address(migrated) == address(0)) revert StakeVault__MigrationNotAvailable();
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stakeManager = migrated;
}
}