Contract Name:
TokenRewards
Contract Source Code:
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby disabling any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
* https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
*
* Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
* presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
* need to send a transaction, and thus is not required to hold Ether at all.
*/
interface IERC20Permit {
/**
* @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
* given ``owner``'s signed approval.
*
* IMPORTANT: The same issues {IERC20-approve} has related to transaction
* ordering also apply here.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `deadline` must be a timestamp in the future.
* - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
* over the EIP712-formatted function arguments.
* - the signature must use ``owner``'s current nonce (see {nonces}).
*
* For more information on the signature format, see the
* https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
* section].
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
/**
* @dev Returns the current nonce for `owner`. This value must be
* included whenever a signature is generated for {permit}.
*
* Every successful call to {permit} increases ``owner``'s nonce by one. This
* prevents a signature from being used multiple times.
*/
function nonces(address owner) external view returns (uint256);
/**
* @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
*/
// solhint-disable-next-line func-name-mixedcase
function DOMAIN_SEPARATOR() external view returns (bytes32);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address from, address to, uint256 amount) external returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../extensions/IERC20Permit.sol";
import "../../../utils/Address.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
/**
* @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
/**
* @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
* calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
*/
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
/**
* @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 oldAllowance = token.allowance(address(this), spender);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
}
/**
* @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
}
}
/**
* @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful. Compatible with tokens that require the approval to be set to
* 0 before setting it to a non-zero value.
*/
function forceApprove(IERC20 token, address spender, uint256 value) internal {
bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);
if (!_callOptionalReturnBool(token, approvalCall)) {
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
_callOptionalReturn(token, approvalCall);
}
}
/**
* @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
* Revert on invalid signature.
*/
function safePermit(
IERC20Permit token,
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) internal {
uint256 nonceBefore = token.nonces(owner);
token.permit(owner, spender, value, deadline, v, r, s);
uint256 nonceAfter = token.nonces(owner);
require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*
* This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
*/
function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
// and not revert is the subcall reverts.
(bool success, bytes memory returndata) = address(token).call(data);
return
success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
*
* Furthermore, `isContract` will also return true if the target contract within
* the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
* which only has an effect at the end of a transaction.
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
* the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
*
* _Available since v4.8._
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata,
string memory errorMessage
) internal view returns (bytes memory) {
if (success) {
if (returndata.length == 0) {
// only check isContract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
require(isContract(target), "Address: call to non-contract");
}
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
/**
* @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason or using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
function _revert(bytes memory returndata, string memory errorMessage) private pure {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;
/// @title Callback for IUniswapV3PoolActions#swap
/// @notice Any contract that calls IUniswapV3PoolActions#swap must implement this interface
interface IUniswapV3SwapCallback {
/// @notice Called to `msg.sender` after executing a swap via IUniswapV3Pool#swap.
/// @dev In the implementation you must pay the pool tokens owed for the swap.
/// The caller of this method must be checked to be a UniswapV3Pool deployed by the canonical UniswapV3Factory.
/// amount0Delta and amount1Delta can both be 0 if no tokens were swapped.
/// @param amount0Delta The amount of token0 that was sent (negative) or must be received (positive) by the pool by
/// the end of the swap. If positive, the callback must send that amount of token0 to the pool.
/// @param amount1Delta The amount of token1 that was sent (negative) or must be received (positive) by the pool by
/// the end of the swap. If positive, the callback must send that amount of token1 to the pool.
/// @param data Any data passed through by the caller via the IUniswapV3PoolActions#swap call
function uniswapV3SwapCallback(
int256 amount0Delta,
int256 amount1Delta,
bytes calldata data
) external;
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.4.0;
/// @title FixedPoint96
/// @notice A library for handling binary fixed point numbers, see https://en.wikipedia.org/wiki/Q_(number_format)
/// @dev Used in SqrtPriceMath.sol
library FixedPoint96 {
uint8 internal constant RESOLUTION = 96;
uint256 internal constant Q96 = 0x1000000000000000000000000;
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;
/// @title Immutable state
/// @notice Functions that return immutable state of the router
interface IPeripheryImmutableState {
/// @return Returns the address of the Uniswap V3 factory
function factory() external view returns (address);
/// @return Returns the address of WETH9
function WETH9() external view returns (address);
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.7.5;
pragma abicoder v2;
import '@uniswap/v3-core/contracts/interfaces/callback/IUniswapV3SwapCallback.sol';
/// @title Router token swapping functionality
/// @notice Functions for swapping tokens via Uniswap V3
interface ISwapRouter is IUniswapV3SwapCallback {
struct ExactInputSingleParams {
address tokenIn;
address tokenOut;
uint24 fee;
address recipient;
uint256 deadline;
uint256 amountIn;
uint256 amountOutMinimum;
uint160 sqrtPriceLimitX96;
}
/// @notice Swaps `amountIn` of one token for as much as possible of another token
/// @param params The parameters necessary for the swap, encoded as `ExactInputSingleParams` in calldata
/// @return amountOut The amount of the received token
function exactInputSingle(ExactInputSingleParams calldata params) external payable returns (uint256 amountOut);
struct ExactInputParams {
bytes path;
address recipient;
uint256 deadline;
uint256 amountIn;
uint256 amountOutMinimum;
}
/// @notice Swaps `amountIn` of one token for as much as possible of another along the specified path
/// @param params The parameters necessary for the multi-hop swap, encoded as `ExactInputParams` in calldata
/// @return amountOut The amount of the received token
function exactInput(ExactInputParams calldata params) external payable returns (uint256 amountOut);
struct ExactOutputSingleParams {
address tokenIn;
address tokenOut;
uint24 fee;
address recipient;
uint256 deadline;
uint256 amountOut;
uint256 amountInMaximum;
uint160 sqrtPriceLimitX96;
}
/// @notice Swaps as little as possible of one token for `amountOut` of another token
/// @param params The parameters necessary for the swap, encoded as `ExactOutputSingleParams` in calldata
/// @return amountIn The amount of the input token
function exactOutputSingle(ExactOutputSingleParams calldata params) external payable returns (uint256 amountIn);
struct ExactOutputParams {
bytes path;
address recipient;
uint256 deadline;
uint256 amountOut;
uint256 amountInMaximum;
}
/// @notice Swaps as little as possible of one token for `amountOut` of another along the specified path (reversed)
/// @param params The parameters necessary for the multi-hop swap, encoded as `ExactOutputParams` in calldata
/// @return amountIn The amount of the input token
function exactOutput(ExactOutputParams calldata params) external payable returns (uint256 amountIn);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;
import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
interface IDecentralizedIndex is IERC20 {
enum IndexType {
WEIGHTED,
UNWEIGHTED
}
// all fees: 1 == 0.01%, 10 == 0.1%, 100 == 1%
struct Fees {
uint256 burn;
uint256 bond;
uint256 debond;
uint256 buy;
uint256 sell;
uint256 partner;
}
struct IndexAssetInfo {
address token;
uint256 weighting;
uint256 basePriceUSDX96;
address c1; // arbitrary contract/address field we can use for an index
uint256 q1; // arbitrary quantity/number field we can use for an index
}
event Create(address indexed newIdx, address indexed wallet);
event Bond(
address indexed wallet,
address indexed token,
uint256 amountTokensBonded,
uint256 amountTokensMinted
);
event Debond(address indexed wallet, uint256 amountDebonded);
event AddLiquidity(
address indexed wallet,
uint256 amountTokens,
uint256 amountDAI
);
event RemoveLiquidity(address indexed wallet, uint256 amountLiquidity);
function BOND_FEE() external view returns (uint256);
function DEBOND_FEE() external view returns (uint256);
function FLASH_FEE() external view returns (uint256);
function PAIRED_LP_TOKEN() external view returns (address);
function indexType() external view returns (IndexType);
function created() external view returns (uint256);
function lpStakingPool() external view returns (address);
function lpRewardsToken() external view returns (address);
function partner() external view returns (address);
function getIdxPriceUSDX96() external view returns (uint256, uint256);
function isAsset(address token) external view returns (bool);
function getAllAssets() external view returns (IndexAssetInfo[] memory);
function getInitialAmount(
address sToken,
uint256 sAmount,
address tToken
) external view returns (uint256);
function getTokenPriceUSDX96(address token) external view returns (uint256);
function processPreSwapFeesAndSwap() external;
function bond(address token, uint256 amount, uint256 amountMintMin) external;
function debond(
uint256 amount,
address[] memory token,
uint8[] memory percentage
) external;
function addLiquidityV2(
uint256 idxTokens,
uint256 daiTokens,
uint256 slippage,
uint256 deadline
) external;
function removeLiquidityV2(
uint256 lpTokens,
uint256 minTokens,
uint256 minDAI,
uint256 deadline
) external;
function flash(
address recipient,
address token,
uint256 amount,
bytes calldata data
) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;
import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
interface IPEAS is IERC20 {
event Burn(address indexed user, uint256 amount);
function burn(uint256 amount) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;
import './IProtocolFees.sol';
interface IProtocolFeeRouter {
function protocolFees() external view returns (IProtocolFees);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;
interface IProtocolFees {
event SetYieldAdmin(uint256 newFee);
event SetYieldBurn(uint256 newFee);
function DEN() external view returns (uint256);
function yieldAdmin() external view returns (uint256);
function yieldBurn() external view returns (uint256);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;
interface ITokenRewards {
event AddShares(address indexed wallet, uint256 amount);
event RemoveShares(address indexed wallet, uint256 amount);
event ClaimReward(address indexed wallet);
event DistributeReward(address indexed wallet, uint256 amount);
event DepositRewards(address indexed wallet, uint256 amount);
function totalShares() external view returns (uint256);
function totalStakers() external view returns (uint256);
function rewardsToken() external view returns (address);
function trackingToken() external view returns (address);
function depositFromPairedLpToken(
uint256 amount,
uint256 slippageOverride
) external;
function depositRewards(uint256 amount) external;
function claimReward(address wallet) external;
function setShares(
address wallet,
uint256 amount,
bool sharesRemoving
) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;
interface IUniswapV2Router02 {
function factory() external view returns (address);
function WETH() external view returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function swapETHForExactTokens(
uint256 amountOut,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;
interface IV3TwapUtilities {
function getV3Pool(
address v3Factory,
address token0,
address token1,
uint24 poolFee
) external view returns (address);
function getPoolPriceUSDX96(
address pricePool,
address nativeStablePool,
address WETH9
) external view returns (uint256);
function sqrtPriceX96FromPoolAndInterval(
address pool
) external view returns (uint160);
function priceX96FromSqrtPriceX96(
uint160 sqrtPriceX96
) external pure returns (uint256);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;
// ----------------------------------------------------------------------------
// BokkyPooBah's DateTime Library v1.00
//
// A gas-efficient Solidity date and time library
//
// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary
//
// Tested date range 1970/01/01 to 2345/12/31
//
// Conventions:
// Unit | Range | Notes
// :-------- |:-------------:|:-----
// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC
// year | 1970 ... 2345 |
// month | 1 ... 12 |
// day | 1 ... 31 |
// hour | 0 ... 23 |
// minute | 0 ... 59 |
// second | 0 ... 59 |
// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday
//
//
// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018.
//
// GNU Lesser General Public License 3.0
// https://www.gnu.org/licenses/lgpl-3.0.en.html
// ----------------------------------------------------------------------------
library BokkyPooBahsDateTimeLibrary {
uint constant SECONDS_PER_DAY = 24 * 60 * 60;
int constant OFFSET19700101 = 2440588;
// ------------------------------------------------------------------------
// Calculate year/month/day from the number of days since 1970/01/01 using
// the date conversion algorithm from
// http://aa.usno.navy.mil/faq/docs/JD_Formula.php
// and adding the offset 2440588 so that 1970/01/01 is day 0
//
// int L = days + 68569 + offset
// int N = 4 * L / 146097
// L = L - (146097 * N + 3) / 4
// year = 4000 * (L + 1) / 1461001
// L = L - 1461 * year / 4 + 31
// month = 80 * L / 2447
// dd = L - 2447 * month / 80
// L = month / 11
// month = month + 2 - 12 * L
// year = 100 * (N - 49) + year + L
// ------------------------------------------------------------------------
function _daysToDate(
uint _days
) internal pure returns (uint year, uint month, uint day) {
int __days = int(_days);
int L = __days + 68569 + OFFSET19700101;
int N = (4 * L) / 146097;
L = L - (146097 * N + 3) / 4;
int _year = (4000 * (L + 1)) / 1461001;
L = L - (1461 * _year) / 4 + 31;
int _month = (80 * L) / 2447;
int _day = L - (2447 * _month) / 80;
L = _month / 11;
_month = _month + 2 - 12 * L;
_year = 100 * (N - 49) + _year + L;
year = uint(_year);
month = uint(_month);
day = uint(_day);
}
function timestampToDate(
uint timestamp
) internal pure returns (uint year, uint month, uint day) {
(year, month, day) = _daysToDate(timestamp / SECONDS_PER_DAY);
}
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;
/// @title Provides functions for deriving a pool address from the factory, tokens, and the fee
library PoolAddress {
bytes32 internal constant POOL_INIT_CODE_HASH =
0xe34f199b19b2b4f47f68442619d555527d244f78a3297ea89325f843f87b8b54;
/// @notice The identifying key of the pool
struct PoolKey {
address token0;
address token1;
uint24 fee;
}
/// @notice Returns PoolKey: the ordered tokens with the matched fee levels
/// @param tokenA The first token of a pool, unsorted
/// @param tokenB The second token of a pool, unsorted
/// @param fee The fee level of the pool
/// @return Poolkey The pool details with ordered token0 and token1 assignments
function getPoolKey(
address tokenA,
address tokenB,
uint24 fee
) internal pure returns (PoolKey memory) {
if (tokenA > tokenB) (tokenA, tokenB) = (tokenB, tokenA);
return PoolKey({ token0: tokenA, token1: tokenB, fee: fee });
}
/// @notice Deterministically computes the pool address given the factory and PoolKey
/// @param factory The Uniswap V3 factory contract address
/// @param key The PoolKey
/// @return pool The contract address of the V3 pool
function computeAddress(
address factory,
PoolKey memory key
) internal pure returns (address pool) {
require(key.token0 < key.token1);
pool = address(
uint160(
uint256(
keccak256(
abi.encodePacked(
hex'ff',
factory,
keccak256(abi.encode(key.token0, key.token1, key.fee)),
POOL_INIT_CODE_HASH
)
)
)
)
);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;
import '@openzeppelin/contracts/access/Ownable.sol';
import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';
import '@openzeppelin/contracts/utils/Context.sol';
import '@uniswap/v3-core/contracts/libraries/FixedPoint96.sol';
import '@uniswap/v3-periphery/contracts/interfaces/ISwapRouter.sol';
import '@uniswap/v3-periphery/contracts/interfaces/IPeripheryImmutableState.sol';
import './interfaces/IDecentralizedIndex.sol';
import './interfaces/IPEAS.sol';
import './interfaces/IProtocolFees.sol';
import './interfaces/IProtocolFeeRouter.sol';
import './interfaces/ITokenRewards.sol';
import './interfaces/IV3TwapUtilities.sol';
import './interfaces/IUniswapV2Router02.sol';
import './libraries/BokkyPooBahsDateTimeLibrary.sol';
import './libraries/PoolAddress.sol';
contract TokenRewards is ITokenRewards, Context {
using SafeERC20 for IERC20;
address constant V3_ROUTER = 0xE592427A0AEce92De3Edee1F18E0157C05861564;
uint256 constant PRECISION = 10 ** 36;
uint24 constant REWARDS_POOL_FEE = 10000; // 1%
address immutable INDEX_FUND;
address immutable PAIRED_LP_TOKEN;
IProtocolFeeRouter immutable PROTOCOL_FEE_ROUTER;
IV3TwapUtilities immutable V3_TWAP_UTILS;
struct Reward {
uint256 excluded;
uint256 realized;
}
address public immutable override trackingToken;
address public immutable override rewardsToken;
uint256 public override totalShares;
uint256 public override totalStakers;
mapping(address => uint256) public shares;
mapping(address => Reward) public rewards;
uint256 _rewardsSwapSlippage = 10; // 1%
uint256 _rewardsPerShare;
uint256 public rewardsDistributed;
uint256 public rewardsDeposited;
mapping(uint256 => uint256) public rewardsDepMonthly;
modifier onlyTrackingToken() {
require(_msgSender() == trackingToken, 'UNAUTHORIZED');
_;
}
constructor(
IProtocolFeeRouter _feeRouter,
IV3TwapUtilities _v3TwapUtilities,
address _indexFund,
address _pairedLpToken,
address _trackingToken,
address _rewardsToken
) {
PROTOCOL_FEE_ROUTER = _feeRouter;
V3_TWAP_UTILS = _v3TwapUtilities;
INDEX_FUND = _indexFund;
PAIRED_LP_TOKEN = _pairedLpToken;
trackingToken = _trackingToken;
rewardsToken = _rewardsToken;
}
function setShares(
address _wallet,
uint256 _amount,
bool _sharesRemoving
) external override onlyTrackingToken {
_setShares(_wallet, _amount, _sharesRemoving);
}
function _setShares(
address _wallet,
uint256 _amount,
bool _sharesRemoving
) internal {
_processFeesIfApplicable();
if (_sharesRemoving) {
_removeShares(_wallet, _amount);
emit RemoveShares(_wallet, _amount);
} else {
_addShares(_wallet, _amount);
emit AddShares(_wallet, _amount);
}
}
function _addShares(address _wallet, uint256 _amount) internal {
if (shares[_wallet] > 0) {
_distributeReward(_wallet);
}
uint256 sharesBefore = shares[_wallet];
totalShares += _amount;
shares[_wallet] += _amount;
if (sharesBefore == 0 && shares[_wallet] > 0) {
totalStakers++;
}
rewards[_wallet].excluded = _cumulativeRewards(shares[_wallet]);
}
function _removeShares(address _wallet, uint256 _amount) internal {
require(shares[_wallet] > 0 && _amount <= shares[_wallet], 'REMOVE');
_distributeReward(_wallet);
totalShares -= _amount;
shares[_wallet] -= _amount;
if (shares[_wallet] == 0) {
totalStakers--;
}
rewards[_wallet].excluded = _cumulativeRewards(shares[_wallet]);
}
function _processFeesIfApplicable() internal {
IDecentralizedIndex(INDEX_FUND).processPreSwapFeesAndSwap();
if (
rewardsToken != PAIRED_LP_TOKEN &&
IERC20(PAIRED_LP_TOKEN).balanceOf(address(this)) > 0
) {
depositFromPairedLpToken(0, 0);
}
}
function depositFromPairedLpToken(
uint256 _amountTknDepositing,
uint256 _slippageOverride
) public override {
require(PAIRED_LP_TOKEN != rewardsToken, 'LPREWSAME');
if (_amountTknDepositing > 0) {
IERC20(PAIRED_LP_TOKEN).safeTransferFrom(
_msgSender(),
address(this),
_amountTknDepositing
);
}
uint256 _amountTkn = IERC20(PAIRED_LP_TOKEN).balanceOf(address(this));
require(_amountTkn > 0, 'NEEDTKN');
uint256 _adminAmt;
(uint256 _yieldAdminFee, ) = _getYieldFees();
if (_yieldAdminFee > 0) {
_adminAmt =
(_amountTkn * _yieldAdminFee) /
PROTOCOL_FEE_ROUTER.protocolFees().DEN();
_amountTkn -= _adminAmt;
}
(address _token0, address _token1) = PAIRED_LP_TOKEN < rewardsToken
? (PAIRED_LP_TOKEN, rewardsToken)
: (rewardsToken, PAIRED_LP_TOKEN);
PoolAddress.PoolKey memory _poolKey = PoolAddress.PoolKey({
token0: _token0,
token1: _token1,
fee: REWARDS_POOL_FEE
});
address _pool = PoolAddress.computeAddress(
IPeripheryImmutableState(V3_ROUTER).factory(),
_poolKey
);
uint160 _rewardsSqrtPriceX96 = V3_TWAP_UTILS
.sqrtPriceX96FromPoolAndInterval(_pool);
uint256 _rewardsPriceX96 = V3_TWAP_UTILS.priceX96FromSqrtPriceX96(
_rewardsSqrtPriceX96
);
uint256 _amountOut = _token0 == PAIRED_LP_TOKEN
? (_rewardsPriceX96 * _amountTkn) / FixedPoint96.Q96
: (_amountTkn * FixedPoint96.Q96) / _rewardsPriceX96;
uint256 _rewardsBalBefore = IERC20(rewardsToken).balanceOf(address(this));
IERC20(PAIRED_LP_TOKEN).safeIncreaseAllowance(V3_ROUTER, _amountTkn);
uint256 _slippage = _slippageOverride > 0
? _slippageOverride
: _rewardsSwapSlippage;
try
ISwapRouter(V3_ROUTER).exactInputSingle(
ISwapRouter.ExactInputSingleParams({
tokenIn: PAIRED_LP_TOKEN,
tokenOut: rewardsToken,
fee: REWARDS_POOL_FEE,
recipient: address(this),
deadline: block.timestamp,
amountIn: _amountTkn,
amountOutMinimum: (_amountOut * (1000 - _slippage)) / 1000,
sqrtPriceLimitX96: 0
})
)
{
if (_adminAmt > 0) {
IERC20(PAIRED_LP_TOKEN).safeTransfer(
Ownable(address(V3_TWAP_UTILS)).owner(),
_adminAmt
);
}
_rewardsSwapSlippage = 10;
_depositRewards(
IERC20(rewardsToken).balanceOf(address(this)) - _rewardsBalBefore
);
} catch {
if (_rewardsSwapSlippage < 500) {
_rewardsSwapSlippage += 10;
}
IERC20(PAIRED_LP_TOKEN).safeDecreaseAllowance(V3_ROUTER, _amountTkn);
}
}
function depositRewards(uint256 _amount) external override {
require(_amount > 0, 'DEPAM');
uint256 _rewardsBalBefore = IERC20(rewardsToken).balanceOf(address(this));
IERC20(rewardsToken).safeTransferFrom(_msgSender(), address(this), _amount);
_depositRewards(
IERC20(rewardsToken).balanceOf(address(this)) - _rewardsBalBefore
);
}
function _depositRewards(uint256 _amountTotal) internal {
if (_amountTotal == 0) {
return;
}
if (totalShares == 0) {
_burnRewards(_amountTotal);
return;
}
uint256 _depositAmount = _amountTotal;
(, uint256 _yieldBurnFee) = _getYieldFees();
if (_yieldBurnFee > 0) {
uint256 _burnAmount = (_amountTotal * _yieldBurnFee) /
PROTOCOL_FEE_ROUTER.protocolFees().DEN();
if (_burnAmount > 0) {
_burnRewards(_burnAmount);
_depositAmount -= _burnAmount;
}
}
rewardsDeposited += _depositAmount;
rewardsDepMonthly[beginningOfMonth(block.timestamp)] += _depositAmount;
_rewardsPerShare += (PRECISION * _depositAmount) / totalShares;
emit DepositRewards(_msgSender(), _depositAmount);
}
function _distributeReward(address _wallet) internal {
if (shares[_wallet] == 0) {
return;
}
uint256 _amount = getUnpaid(_wallet);
rewards[_wallet].realized += _amount;
rewards[_wallet].excluded = _cumulativeRewards(shares[_wallet]);
if (_amount > 0) {
rewardsDistributed += _amount;
IERC20(rewardsToken).safeTransfer(_wallet, _amount);
emit DistributeReward(_wallet, _amount);
}
}
function _burnRewards(uint256 _burnAmount) internal {
try IPEAS(rewardsToken).burn(_burnAmount) {} catch {
IERC20(rewardsToken).safeTransfer(address(0xdead), _burnAmount);
}
}
function _getYieldFees()
internal
view
returns (uint256 _admin, uint256 _burn)
{
IProtocolFees _fees = PROTOCOL_FEE_ROUTER.protocolFees();
if (address(_fees) != address(0)) {
_admin = _fees.yieldAdmin();
_burn = _fees.yieldBurn();
}
}
function beginningOfMonth(uint256 _timestamp) public pure returns (uint256) {
(, , uint256 _dayOfMonth) = BokkyPooBahsDateTimeLibrary.timestampToDate(
_timestamp
);
return _timestamp - ((_dayOfMonth - 1) * 1 days) - (_timestamp % 1 days);
}
function claimReward(address _wallet) external override {
_distributeReward(_wallet);
emit ClaimReward(_wallet);
}
function getUnpaid(address _wallet) public view returns (uint256) {
if (shares[_wallet] == 0) {
return 0;
}
uint256 earnedRewards = _cumulativeRewards(shares[_wallet]);
uint256 rewardsExcluded = rewards[_wallet].excluded;
if (earnedRewards <= rewardsExcluded) {
return 0;
}
return earnedRewards - rewardsExcluded;
}
function _cumulativeRewards(uint256 _share) internal view returns (uint256) {
return (_share * _rewardsPerShare) / PRECISION;
}
}