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RocketJoeStakingContract and RocketJoeToken
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@LouisMeMyself
LouisMeMyself committed Dec 28, 2021
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207 changes: 207 additions & 0 deletions .openzeppelin/unknown-31337.json
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{
"manifestVersion": "3.2",
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"impls": {
"0002ac5494978eaaa1493964bf66ede2d1c7b3ce9a72bb21df782f9879635dfd": {
"address": "0x0165878A594ca255338adfa4d48449f69242Eb8F",
"txHash": "0xd686e808a73b1c19d894db70d18d7814f9f04523a843fc53ab8ea7d47444542c",
"layout": {
"storage": [
{
"contract": "Initializable",
"label": "_initialized",
"type": "t_bool",
"src": "@openzeppelin\\contracts-upgradeable\\proxy\\utils\\Initializable.sol:39"
},
{
"contract": "Initializable",
"label": "_initializing",
"type": "t_bool",
"src": "@openzeppelin\\contracts-upgradeable\\proxy\\utils\\Initializable.sol:44"
},
{
"contract": "ContextUpgradeable",
"label": "__gap",
"type": "t_array(t_uint256)50_storage",
"src": "@openzeppelin\\contracts-upgradeable\\utils\\ContextUpgradeable.sol:31"
},
{
"contract": "OwnableUpgradeable",
"label": "_owner",
"type": "t_address",
"src": "@openzeppelin\\contracts-upgradeable\\access\\OwnableUpgradeable.sol:22"
},
{
"contract": "OwnableUpgradeable",
"label": "__gap",
"type": "t_array(t_uint256)49_storage",
"src": "@openzeppelin\\contracts-upgradeable\\access\\OwnableUpgradeable.sol:82"
},
{
"contract": "RocketJoeStakingContract",
"label": "moJOE",
"type": "t_contract(IERC20Upgradeable)277",
"src": "contracts\\RocketJoeStakingContract.sol:45"
},
{
"contract": "RocketJoeStakingContract",
"label": "lastRewardTimestamp",
"type": "t_uint256",
"src": "contracts\\RocketJoeStakingContract.sol:46"
},
{
"contract": "RocketJoeStakingContract",
"label": "accRJoePerShare",
"type": "t_uint256",
"src": "contracts\\RocketJoeStakingContract.sol:47"
},
{
"contract": "RocketJoeStakingContract",
"label": "rJOE",
"type": "t_contract(RocketJoeToken)2094",
"src": "contracts\\RocketJoeStakingContract.sol:50"
},
{
"contract": "RocketJoeStakingContract",
"label": "rJoePerSec",
"type": "t_uint256",
"src": "contracts\\RocketJoeStakingContract.sol:52"
},
{
"contract": "RocketJoeStakingContract",
"label": "userInfo",
"type": "t_mapping(t_address,t_struct(UserInfo)1587_storage)",
"src": "contracts\\RocketJoeStakingContract.sol:55"
}
],
"types": {
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"label": "contract IERC20Upgradeable"
},
"t_uint256": {
"label": "uint256"
},
"t_contract(RocketJoeToken)2094": {
"label": "contract RocketJoeToken"
},
"t_mapping(t_address,t_struct(UserInfo)1587_storage)": {
"label": "mapping(address => struct RocketJoeStakingContract.UserInfo)"
},
"t_address": {
"label": "address"
},
"t_struct(UserInfo)1587_storage": {
"label": "struct RocketJoeStakingContract.UserInfo",
"members": [
{
"label": "amount",
"type": "t_uint256"
},
{
"label": "rewardDebt",
"type": "t_uint256"
}
]
},
"t_array(t_uint256)49_storage": {
"label": "uint256[49]"
},
"t_array(t_uint256)50_storage": {
"label": "uint256[50]"
},
"t_bool": {
"label": "bool"
}
}
}
}
}
}
162 changes: 162 additions & 0 deletions contracts/RocketJoeStakingContract.sol
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// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol";
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol";
import "./RocketJoeToken.sol";

import "hardhat/console.sol";

// MasterChefJoe is a boss. He says "go f your blocks lego boy, I'm gonna use timestamp instead".
// And to top it off, it takes no risks. Because the biggest risk is operator error.
// So we make it virtually impossible for the operator of this contract to cause a bug with people's harvests.
//
// Note that it's ownable and the owner wields tremendous power. The ownership
// will be transferred to a governance smart contract once JOE is sufficiently
// distributed and the community can show to govern itself.
//
// With thanks to the Lydia Finance team.
//
// Godspeed and may the 10x be with you.
contract RocketJoeStakingContract is Initializable, OwnableUpgradeable {
using SafeERC20Upgradeable for IERC20Upgradeable;

// Info of each user.
struct UserInfo {
uint256 amount; // How many moJOE tokens the user has provided.
uint256 rewardDebt; // Reward debt. See explanation below.
//
// We do some fancy math here. Basically, any point in time, the amount of JOEs
// entitled to a user but is pending to be distributed is:
//
// pending reward = (user.amount * accRJoePerShare) - user.rewardDebt
//
// Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens:
// 1. `accRJoePerShare` (and `lastRewardTimestamp`) gets updated.
// 2. User receives the pending reward sent to his/her address.
// 3. User's `amount` gets updated.
// 4. User's `rewardDebt` gets updated.
}

// Info.
IERC20Upgradeable moJOE; // Address of moJOE token contract.
uint256 lastRewardTimestamp; // Last timestamp that rJOEs distribution occurs.
uint256 accRJoePerShare; // Accumulated JOEs per share, times 1e12. See below.

// The rJOE TOKEN!
RocketJoeToken public rJOE;
// rJOE tokens created per second.
uint256 public rJoePerSec;

// Info of each user that stakes LP tokens.
mapping(address => UserInfo) public userInfo;

event Deposit(address indexed user, uint256 amount);
event Withdraw(address indexed user, uint256 amount);
event EmergencyWithdraw(address indexed user, uint256 amount);
event UpdateEmissionRate(address indexed user, uint256 _rJoePerSec);

function initialize(IERC20Upgradeable _moJOE, RocketJoeToken _rJOE, uint256 _rJoePerSec) public initializer {
__Ownable_init();

moJOE = _moJOE;
rJOE = _rJOE;
rJoePerSec = _rJoePerSec;
}

// View function to see pending JOEs on frontend.
function pendingRJoe(address _user) external view returns (uint256) {
UserInfo storage user = userInfo[_user];
uint256 moJoeSupply = moJOE.balanceOf(address(this));
uint256 _accRJoePerShare = accRJoePerShare;

if (block.timestamp > lastRewardTimestamp && moJoeSupply != 0) {
uint256 multiplier = block.timestamp - lastRewardTimestamp;
uint256 rJoeReward = multiplier * rJoePerSec;
_accRJoePerShare = _accRJoePerShare + rJoeReward * 1e12 / moJoeSupply;
}
return user.amount * _accRJoePerShare / 1e12 - user.rewardDebt;
}

// Update reward variables of the given pool to be up-to-date.
function updatePool() public {
if (block.timestamp <= lastRewardTimestamp) {
return;
}
uint256 moJoeSupply = moJOE.balanceOf(address(this));
if (moJoeSupply == 0) {
lastRewardTimestamp = block.timestamp;
return;
}
uint256 multiplier = block.timestamp - lastRewardTimestamp;
uint256 rJoeReward = multiplier * rJoePerSec;
accRJoePerShare = accRJoePerShare + rJoeReward * 1e12 / moJoeSupply;
lastRewardTimestamp = block.timestamp;

rJOE.mint(address(this), rJoeReward);
}

// Deposit moJOE to RocketJoeStakingContract for rJOE allocation.
function deposit(uint256 _amount) public {
UserInfo storage user = userInfo[msg.sender];

updatePool();
if (user.amount > 0) {
uint256 pending = user.amount * accRJoePerShare / 1e12 - user.rewardDebt;
safeRJoeTransfer(msg.sender, pending);
}
user.amount = user.amount + _amount;
user.rewardDebt = user.amount * accRJoePerShare / 1e12;

moJOE.safeTransferFrom(address(msg.sender), address(this), _amount);
emit Deposit(msg.sender, _amount);
}

// Withdraw moJOE from RocketJoeStakingContract.
function withdraw(uint256 _amount) public {
UserInfo storage user = userInfo[msg.sender];
require(user.amount >= _amount, "withdraw: not good");

updatePool();
uint256 pending = user.amount * accRJoePerShare / 1e12 - user.rewardDebt;
user.amount = user.amount - _amount;
user.rewardDebt = user.amount * accRJoePerShare / 1e12;

safeRJoeTransfer(msg.sender, pending);
moJOE.safeTransfer(address(msg.sender), _amount);
emit Withdraw(msg.sender, _amount);
}

// Withdraw without caring about rewards. EMERGENCY ONLY.
function emergencyWithdraw() public {
UserInfo storage user = userInfo[msg.sender];

uint256 _amount = user.amount;
user.amount = 0;
user.rewardDebt = 0;

moJOE.safeTransfer(address(msg.sender), _amount);
emit EmergencyWithdraw(msg.sender, _amount);
}

// Safe rJoe transfer function, just in case if rounding error causes pool to not have enough JOEs.
function safeRJoeTransfer(address _to, uint256 _amount) internal {
uint256 rJoeBal = rJOE.balanceOf(address(this));
if (_amount > rJoeBal) {
rJOE.transfer(_to, rJoeBal);
} else {
rJOE.transfer(_to, _amount);
}
}

// Pancake has to add hidden dummy pools inorder to alter the emission,
// here we make it simple and transparent to all.
function updateEmissionRate(uint256 _rJoePerSec) public onlyOwner {
updatePool();
rJoePerSec = _rJoePerSec;
emit UpdateEmissionRate(msg.sender, _rJoePerSec);
}
}
16 changes: 16 additions & 0 deletions contracts/RocketJoeToken.sol
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// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

// RocketJoeToken, rJoe.
contract RocketJoeToken is ERC20("RocketJoeToken", "rJOE"), Ownable {
/// @notice Infinite supply, but burned to join IDO.

/// @notice Creates `_amount` token to `_to`. Must only be called by the owner (RocketJoeStakingContract).
function mint(address _to, uint256 _amount) public onlyOwner {
_mint(_to, _amount);
}
}
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