Contract 0xdB5fD0678eED82246b599da6BC36B56157E4beD8

 
 
Txn Hash
Method
Block
From
To
Value
0x0e5da68092978201d4c0f889e09fbe0e595fc048fb3ca25e9cf383af348c4aeaDeposit Backing153070932022-08-09 9:04:043 days 8 hrs agoENS Name traversa.eth IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍00186365 8.‍25259828
0xb741d6717e50cc01c9a0ac59e9f8c7aa5692a17d6899419a9abf1fd0fb29d240Deposit And Fix152568312022-08-01 13:07:2711 days 4 hrs ago0x358c84faa7f860ab41b93edccb7e64f7eb330bb1 IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍00324457 9.‍17437555
0xf6a354cb79bbc860b5ac8d57b614efb232b1eba1713c36f02136e8a37800fbf0Exit Amm Given L...152312422022-07-28 13:22:4115 days 4 hrs agoENS Name koji.eth IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍0061703 17.‍36054883
0x71bd7fb3d58dc5ecefaf697f3d1a54989323ca8e989b76b40e61ff076dd2ea9dDeposit Backing151154902022-07-10 14:47:1233 days 3 hrs ago0x13b1f666b1e9861190b88dd1656547491749308e IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍00517288 24.‍38244391
0xb06e485be174bb673879a4d4a1dac47e86b60a26c9df5faf2d1ad3acbc666b78Deposit And Prov...151154902022-07-10 14:47:1233 days 3 hrs ago0x13b1f666b1e9861190b88dd1656547491749308e IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍01072647 24.‍38244391
0x94debd80029090ed0a48b7ad74f4555f276486e112c94f820d3ca8cc6282fd11Deposit And Fix150456562022-06-29 15:29:2544 days 2 hrs ago0x47fad753dc81e241116a1b086bf8453b2c661c1e IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80.‍00001 Ether0.‍01671736 45.‍52486403
0xade070dda547dce14a40a7d6901bf436d00a0159c07012f205db7b5cfbd722a6Exit Amm Given L...149553392022-06-13 9:49:5360 days 8 hrs ago0xa07b17c7df2257ae49f26e17fff1a6dfc206ca84 IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍05030056 135.‍91075319
0xd1f385f860dfc3ede041a111a4fed32256e4681c286b5f42a2952156afe9422fExit Amm Given L...148413832022-05-25 10:32:2379 days 7 hrs agoENS Name reply-with-your-ens.eth IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍00533583 14.‍95388845
0x0be46497d5cbc6b2c40d381ee18e5aeb9546ac6621c01d228206e0913f4fe9b4Exit Amm Given L...148200322022-05-21 23:13:5382 days 18 hrs ago0x56faec6193dd997993580e3b038eed877638b31d IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍00608628 16.‍51741502
0x547f14e132d69237edb1e5f31ecd4a524215a8c0a27dab8de6f714124da36a78Deposit And Fix147872572022-05-16 16:17:3288 days 1 hr ago0xafd0659e7993bd4d820f17a2bb2e79205feaf9b9 IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80.‍001 Ether0.‍0161252 45.‍58349552
0x63d5faf973693738ed53e0de63c955cdb7e094c8a32ffee38350b42bb0140383Deposit And Fix147547202022-05-11 12:01:2493 days 5 hrs ago0xafd0659e7993bd4d820f17a2bb2e79205feaf9b9 IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍03776761 123.‍60899457
0xdaaf3f4bfeb784d9d98b294e230a1aa10f979f655b4db299e798baed0bc982f4Exit Amm Given L...146941602022-05-01 20:48:57102 days 21 hrs ago0x65ebf2f9a1d826c7786e81bcec6b3f77587db67d IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍08759843 59.‍08294185
0x44307a08c9958ed879a5f6896640210aa036c1f416c9d461f6086ce00763acf4Exit Amm Given L...146738222022-04-28 16:12:19106 days 1 hr ago0x26d9c5e17ba3419935522a7b4b6146293a211edb IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍0136653 77.‍27496253
0x496e02f193e8bd15811c1c4bf6bb7905c2cb07e88c24a2ba45240797b2f5a031Deposit And Fix146673452022-04-27 15:37:56107 days 2 hrs ago0xafd0659e7993bd4d820f17a2bb2e79205feaf9b9 IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍01584084 54.‍27530895
0x1eb5d1f995be2ccf19239c74eb7509fdf42370311107840b3f1747b88984baaeDeposit And Fix146673382022-04-27 15:35:50107 days 2 hrs ago0xafd0659e7993bd4d820f17a2bb2e79205feaf9b9 IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍01485722 42.‍01158385
0x82cdd447cecdfae4441bb105579574909183111c17b3becd90c471f4d76e25d1Exit Amm Given L...146477782022-04-24 13:39:16110 days 4 hrs ago0xdaf573036a5a7fedbae468897b7892ffdab8139f IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍0097855 27.‍69337066
0xf674a4cee61f46a1e84059a1d0acd7d48512e5efcafa0640916b6f17e0082335Exit Amm Given L...146477042022-04-24 13:22:17110 days 4 hrs ago0xda9e6270df11dd9aee9775bd938319ca2ac6c6cb IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍0105112 28.‍65088614
0x535f542856993c5cca1faa03748c5c3ba475aa67271828f006e4b26b19b6b2ffExit Amm Given L...146058622022-04-17 23:54:50116 days 18 hrs ago0x276f6e63a60a794866f13fd86c748972f83a2e2f IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍00398226 20.‍6112737
0x16b7dfd8f8dbca7db107a4dc59edd02b387b0f1f68fd784940649a55a9a5594dDeposit And Prov...146019582022-04-17 9:23:13117 days 8 hrs agoENS Name reply-with-your-ens.eth IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍00795853 16.‍93032285
0xdd014c3a9cbade72c520fe870c572c08fc513cb51f927a2f24575920e3c81327Exit Amm Given L...146019482022-04-17 9:21:24117 days 8 hrs agoENS Name reply-with-your-ens.eth IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍00634778 18.‍05702519
0xa0d01260b76e6cfcf0a0b4afd42e7724f9ff69016aae59017bad1563808bcfa6Exit Amm Given L...145924882022-04-15 21:57:32118 days 20 hrs ago0x63e0e8a3a9c59141843cc26e5433507b8a835999 IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍0209906 59.‍712305
0x7f321ee1b5e4e0e0200f1855ec78fd80e59e5216bdb743199ea1e127f05e99a2Exit Amm Given L...145842812022-04-14 15:13:14120 days 2 hrs ago0x942bfcc165f1a54f107a42897454246c670acde7 IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍0265338 72
0xacbb80fa6d64bf6d7bbc0034d6572bedce0ae14b203968c0b3cb59ca3d56bb68Exit Amm Given L...145519642022-04-09 14:08:42125 days 3 hrs ago0x9d07e3406d3e7ec5e19b6804f6f821f684c9339c IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍00521099 27.‍10387066
0xd52c6f0b9ddccf27e12c973a027f75a7076372d022a5c631eefc28e7ed728c93Exit Amm Given L...145391422022-04-07 13:56:01127 days 4 hrs agoENS Name destinyguide.eth IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍01404809 37.‍90892036
0xc788fb7fd150e4c882efde7ae4cef716e7bfc4dfb5fe37e5db0b95f8b048b905Exit Amm Given L...145387102022-04-07 12:25:13127 days 5 hrs agoENS Name holyguard.eth IN  0xdb5fd0678eed82246b599da6bc36b56157e4bed80 Ether0.‍01639335 42.‍2876482
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x94debd80029090ed0a48b7ad74f4555f276486e112c94f820d3ca8cc6282fd11150456562022-06-29 15:29:2544 days 2 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed8 0x0697b0a2cbb1f947f51a9845b715e9eab3f89b4f0.‍00001 Ether
0x547f14e132d69237edb1e5f31ecd4a524215a8c0a27dab8de6f714124da36a78147872572022-05-16 16:17:3288 days 1 hr ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed8 0x0697b0a2cbb1f947f51a9845b715e9eab3f89b4f0.‍001 Ether
0xc4da1113c5b25e88ee93c30042f4e6a5d65d0b5687712e716889f00d5936062b142067482022-02-14 21:46:45178 days 20 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b1160.‍1 Ether
0x32cf84073cd02e7feedf92afd4c036cf46e41228640532739e94e9cf090143ef142067242022-02-14 21:43:18178 days 20 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b1160.‍1 Ether
0xdb94732f47ad7880317e5270110cdced7cd50ac5cec7e2a9779cbeb472c7ac30141968152022-02-13 8:46:27180 days 9 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b1160.‍07 Ether
0x6343559ee222a1633123913d7ec9e816a4c7cc28917f25fdfacbfe48286cb066141967362022-02-13 8:27:34180 days 9 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b1160.‍07 Ether
0x23d4927adbb9ecee96ce23e9e9e0dc088894f4fc373f97d1be1b92a5115f6c54141696442022-02-09 4:10:31184 days 13 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b11630 Ether
0xd893477dade825e54fc9077f5228f9d40502b9535b3e6df78ebf26163b9db9f1141391882022-02-04 11:17:15189 days 6 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b1160.‍25 Ether
0x0ca2bea0053f1453437c161d1eb1508bce336be40da062953eb19cdeeb9ab49b141391652022-02-04 11:13:01189 days 6 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b1160.‍5 Ether
0x75a87f075d6780a28aebb4bee7bf36e6a0e8d589399afda6058a84a942a61983140332392022-01-19 2:10:55205 days 15 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b11650 Ether
0x053a46d0863a6cdf63cda01aa30be975aaab410926f116160891a4c0f6fa7bb3140318272022-01-18 20:55:36205 days 21 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed8 0x0697b0a2cbb1f947f51a9845b715e9eab3f89b4f36 Ether
0x27d06353fe858bd6001c98163a89cde53e50ba390c853c53f12426c1499caf6e140309472022-01-18 17:41:35206 days 17 mins ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b11632.‍2 Ether
0xd77a4afe763dc8ffb4b56a70b0ba7cf81c36b09369daffe08ab7173a89b22f96139092612021-12-30 21:56:53224 days 20 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed8 0x0697b0a2cbb1f947f51a9845b715e9eab3f89b4f0.‍13 Ether
0x0c2c9c38fa040133898548d1017277a70d5e85b76d1bb3f8c2f80d138a80e8ad138956442021-12-28 19:32:10226 days 22 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b1160.‍05 Ether
0xba2029d9854210132a8ff1439ed60f31e10542ea778e84b6fe09de342f622526138620392021-12-23 14:42:13232 days 3 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b1160.‍01 Ether
0x033cd30614efbdd5e2a0e0566e7a7c3d8b17f844ff812c9dddc2060652ca4586138215112021-12-17 8:10:24238 days 9 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b1160.‍1 Ether
0x3d9b43b3ef8e51f90d32b62c888459a5a9247e8c8ecd0f1e880313f008c75186138167602021-12-16 14:40:02239 days 3 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b1165 Ether
0x008e26c719f581c2a31af8b4d77b1d55c63184b3763e6a483d02de7cc3d8f8f6138132692021-12-16 1:32:02239 days 16 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed8 0x0697b0a2cbb1f947f51a9845b715e9eab3f89b4f0.‍20069918 Ether
0xc6d959234168448e24c94f732bb965b65d80b62288d6d903ab2d89577c824a7b138125892021-12-15 23:03:55239 days 18 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b1160.‍3 Ether
0x2d59e79cdc19dda3b13f9e6e3f1d769d2596ddecfb291284caa821a30297d135138122992021-12-15 21:59:52239 days 19 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b1160.‍01 Ether
0xfe01746b3447f9c52fba88d858f716fcf1074f110ef730383ec2029106383320138104062021-12-15 14:57:36240 days 3 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b1160.‍1 Ether
0x3efb6fbdd88cf71a56069c4713edeabcf7aede494d70a0b9e5cf946266a4ce2a138103362021-12-15 14:40:49240 days 3 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b1160.‍2 Ether
0x764b9a0febc92bea0e80bc3dd918d66e12a406f887d4c57c469ddb6aa67a2f38138093302021-12-15 11:02:37240 days 6 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b116400 Ether
0xc852da4856b2df5c25252c789bb5a0bcbf48104495ac744225b3b5ff58c010dc138067052021-12-15 1:05:24240 days 16 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed80x6320e6844eeea57343d5ca47d3166822ec78b116125 Ether
0x8d5d537931302aab9086ec84f9b091f96ae42de83ba14ff0c7816e19edeb2b11138038752021-12-14 14:39:06241 days 3 hrs ago 0xdb5fd0678eed82246b599da6bc36b56157e4bed8 0x0697b0a2cbb1f947f51a9845b715e9eab3f89b4f0.‍1 Ether
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Contract Source Code Verified (Exact Match)

Contract Name:
TempusController

Compiler Version
v0.8.10+commit.fc410830

Optimization Enabled:
Yes with 100000 runs

Other Settings:
default evmVersion
File 1 of 16 : TempusController.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.10;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

import "./amm/interfaces/ITempusAMM.sol";
import "./amm/interfaces/IVault.sol";
import "./ITempusPool.sol";
import "./math/Fixed256xVar.sol";
import "./utils/AMMBalancesHelper.sol";
import "./utils/UntrustedERC20.sol";
import "./utils/Ownable.sol";
import "./utils/Versioned.sol";

/// @dev TempusController singleton with a transferrable ownership and re-entrancy guards
///      Owner is automatically set to the deployer of this contract
contract TempusController is ReentrancyGuard, Ownable, Versioned {
    using Fixed256xVar for uint256;
    using SafeERC20 for IERC20;
    using UntrustedERC20 for IERC20;
    using AMMBalancesHelper for uint256[];

    /// Registry for valid pools and AMM's to avoid fake address injection
    mapping(address => bool) private registry;

    /// @dev Event emitted on a successful BT/YBT deposit.
    /// @param pool The Tempus Pool to which assets were deposited
    /// @param depositor Address of the user who deposited Yield Bearing Tokens to mint
    ///                  Tempus Principal Share (TPS) and Tempus Yield Shares
    /// @param recipient Address of the recipient who will receive TPS and TYS tokens
    /// @param yieldTokenAmount Amount of yield tokens received from underlying pool
    /// @param backingTokenValue Value of @param yieldTokenAmount expressed in backing tokens
    /// @param shareAmounts Number of Tempus Principal Shares (TPS) and Tempus Yield Shares (TYS) granted to `recipient`
    /// @param interestRate Interest Rate of the underlying pool from Yield Bearing Tokens to the underlying asset
    /// @param fee The fee which was deducted (in terms of yield bearing tokens)
    event Deposited(
        address indexed pool,
        address indexed depositor,
        address indexed recipient,
        uint256 yieldTokenAmount,
        uint256 backingTokenValue,
        uint256 shareAmounts,
        uint256 interestRate,
        uint256 fee
    );

    /// @dev Event emitted on a successful BT/YBT redemption.
    /// @param pool The Tempus Pool from which Tempus Shares were redeemed
    /// @param redeemer Address of the user whose Shares (Principals and Yields) are redeemed
    /// @param recipient Address of user that received Yield Bearing Tokens
    /// @param principalShareAmount Number of Tempus Principal Shares (TPS) to redeem into the Yield Bearing Token (YBT)
    /// @param yieldShareAmount Number of Tempus Yield Shares (TYS) to redeem into the Yield Bearing Token (YBT)
    /// @param yieldTokenAmount Number of Yield bearing tokens redeemed from the pool
    /// @param backingTokenValue Value of @param yieldTokenAmount expressed in backing tokens
    /// @param interestRate Interest Rate of the underlying pool from Yield Bearing Tokens to the underlying asset
    /// @param fee The fee which was deducted (in terms of yield bearing tokens)
    /// @param isEarlyRedeem True in case of early redemption, otherwise false
    event Redeemed(
        address indexed pool,
        address indexed redeemer,
        address indexed recipient,
        uint256 principalShareAmount,
        uint256 yieldShareAmount,
        uint256 yieldTokenAmount,
        uint256 backingTokenValue,
        uint256 interestRate,
        uint256 fee,
        bool isEarlyRedeem
    );

    constructor() Versioned(1, 0, 0) {}

    /// @dev Registers a POOL or an AMM as valid or invalid to use with this Controller
    /// @param authorizedContract Contract which will be allowed to be used inside this Controller
    /// @param isValid If true, contract is valid to be used, if false, it's not allowed anymore
    function register(address authorizedContract, bool isValid) public onlyOwner {
        registry[authorizedContract] = isValid;
    }

    /// @dev Validates that the provided contract is registered to be used with this Controller
    /// @param authorizedContract Contract address to check
    function requireRegistered(address authorizedContract) private view {
        require(registry[authorizedContract], "Unauthorized contract address");
    }

    /// @dev Atomically deposits YBT/BT to TempusPool and provides liquidity
    ///      to the corresponding Tempus AMM with the issued TYS & TPS
    /// @param tempusAMM Tempus AMM to use to swap TYS for TPS
    /// @param tokenAmount Amount of YBT/BT to be deposited
    /// @param isBackingToken specifies whether the deposited asset is the Backing Token or Yield Bearing Token
    function depositAndProvideLiquidity(
        ITempusAMM tempusAMM,
        uint256 tokenAmount,
        bool isBackingToken
    ) external payable nonReentrant {
        requireRegistered(address(tempusAMM));
        _depositAndProvideLiquidity(tempusAMM, tokenAmount, isBackingToken);
    }

    /// @dev Adds liquidity to tempusAMM with ratio of shares that is equal to ratio in AMM
    /// @param tempusAMM Tempus AMM to provide liquidity to
    /// @param sharesAmount Amount of shares to be used to provide liquidity, one of the sahres will be partially used
    /// @notice If sharesAmount is 100 and amm balances ratio is 1 principal : 10 yields 90 principal will be "unused"
    ///         So, liquidity will be provided with 10 principals and 100 yields
    /// @notice msg.sender needs to approve Controller for both Principals and Yields for @param sharesAmount
    function provideLiquidity(ITempusAMM tempusAMM, uint256 sharesAmount) external nonReentrant {
        requireRegistered(address(tempusAMM));
        (
            IVault vault,
            bytes32 poolId,
            IERC20[] memory ammTokens,
            uint256[] memory ammBalances
        ) = _getAMMDetailsAndEnsureInitialized(tempusAMM);

        _provideLiquidity(msg.sender, vault, poolId, ammTokens, ammBalances, sharesAmount, msg.sender);
    }

    /// @dev Atomically deposits YBT/BT to TempusPool and swaps TYS for TPS to get fixed yield
    ///      See https://docs.balancer.fi/developers/guides/single-swaps#swap-overview
    /// @param tempusAMM Tempus AMM to use to swap TYS for TPS
    /// @param tokenAmount Amount of YBT/BT to be deposited in underlying YBT/BT decimal precision
    /// @param isBackingToken specifies whether the deposited asset is the Backing Token or Yield Bearing Token
    /// @param minTYSRate Minimum exchange rate of TYS (denominated in TPS) to receive in exchange for TPS
    /// @param deadline A timestamp by which the transaction must be completed, otherwise it would revert
    function depositAndFix(
        ITempusAMM tempusAMM,
        uint256 tokenAmount,
        bool isBackingToken,
        uint256 minTYSRate,
        uint256 deadline
    ) external payable nonReentrant {
        requireRegistered(address(tempusAMM));
        _depositAndFix(tempusAMM, tokenAmount, isBackingToken, minTYSRate, deadline);
    }

    /// @dev Deposits Yield Bearing Tokens to a Tempus Pool.
    /// @param targetPool The Tempus Pool to which tokens will be deposited
    /// @param yieldTokenAmount amount of Yield Bearing Tokens to be deposited
    ///                         in YBT Contract precision which can be 18 or 8 decimals
    /// @param recipient Address which will receive Tempus Principal Shares (TPS) and Tempus Yield Shares (TYS)
    function depositYieldBearing(
        ITempusPool targetPool,
        uint256 yieldTokenAmount,
        address recipient
    ) external nonReentrant {
        require(recipient != address(0), "recipient can not be 0x0");
        requireRegistered(address(targetPool));
        _depositYieldBearing(targetPool, yieldTokenAmount, recipient);
    }

    /// @dev Deposits Backing Tokens into the underlying protocol and
    ///      then deposited the minted Yield Bearing Tokens to the Tempus Pool.
    /// @param targetPool The Tempus Pool to which tokens will be deposited
    /// @param backingTokenAmount amount of Backing Tokens to be deposited into the underlying protocol
    /// @param recipient Address which will receive Tempus Principal Shares (TPS) and Tempus Yield Shares (TYS)
    function depositBacking(
        ITempusPool targetPool,
        uint256 backingTokenAmount,
        address recipient
    ) external payable nonReentrant {
        require(recipient != address(0), "recipient can not be 0x0");
        requireRegistered(address(targetPool));
        _depositBacking(targetPool, backingTokenAmount, recipient);
    }

    /// @dev Redeem TPS+TYS held by msg.sender into Yield Bearing Tokens
    /// @notice `msg.sender` will receive yield bearing tokens
    /// @notice Before maturity, `principalAmount` must equal to `yieldAmount`
    /// @param targetPool The Tempus Pool from which to redeem Tempus Shares
    /// @param principalAmount Amount of Tempus Principals to redeem in PrincipalShare decimal precision
    /// @param yieldAmount Amount of Tempus Yields to redeem in YieldShare decimal precision
    /// @param recipient Address of user that will receive yield bearing tokens
    function redeemToYieldBearing(
        ITempusPool targetPool,
        uint256 principalAmount,
        uint256 yieldAmount,
        address recipient
    ) external nonReentrant {
        require(recipient != address(0), "recipient can not be 0x0");
        requireRegistered(address(targetPool));
        _redeemToYieldBearing(targetPool, msg.sender, principalAmount, yieldAmount, recipient);
    }

    /// @dev Redeem TPS+TYS held by msg.sender into Backing Tokens
    /// @notice `recipient` will receive the backing tokens
    /// @notice Before maturity, `principalAmount` must equal to `yieldAmount`
    /// @param targetPool The Tempus Pool from which to redeem Tempus Shares
    /// @param principalAmount Amount of Tempus Principals to redeem in PrincipalShare decimal precision
    /// @param yieldAmount Amount of Tempus Yields to redeem in YieldShare decimal precision
    /// @param recipient Address of user that will receive yield bearing tokens
    function redeemToBacking(
        ITempusPool targetPool,
        uint256 principalAmount,
        uint256 yieldAmount,
        address recipient
    ) external nonReentrant {
        require(recipient != address(0), "recipient can not be 0x0");
        requireRegistered(address(targetPool));
        _redeemToBacking(targetPool, msg.sender, principalAmount, yieldAmount, recipient);
    }

    /// @dev Withdraws liquidity from TempusAMM
    /// @notice `msg.sender` needs to approve controller for @param lpTokensAmount of LP tokens
    /// @notice Transfers LP tokens to controller and exiting tempusAmm with `msg.sender` as recipient
    /// @param tempusAMM Tempus AMM instance
    /// @param lpTokensAmount Amount of LP tokens to be withdrawn
    /// @param principalAmountOutMin Minimal amount of TPS to be withdrawn
    /// @param yieldAmountOutMin Minimal amount of TYS to be withdrawn
    /// @param toInternalBalances Withdrawing liquidity to internal balances
    function exitTempusAMM(
        ITempusAMM tempusAMM,
        uint256 lpTokensAmount,
        uint256 principalAmountOutMin,
        uint256 yieldAmountOutMin,
        bool toInternalBalances
    ) external nonReentrant {
        requireRegistered(address(tempusAMM));
        _exitTempusAMM(tempusAMM, lpTokensAmount, principalAmountOutMin, yieldAmountOutMin, toInternalBalances);
    }

    /// @dev Withdraws liquidity from TempusAMM and redeems Shares to Yield Bearing or Backing Tokens
    ///      Checks user's balance of principal shares and yield shares
    ///      and exits AMM with exact amounts needed for redemption.
    /// @notice `msg.sender` needs to approve controller for whole balance of LP token
    /// @notice Transfers users' LP tokens to controller, then exits tempusAMM with `msg.sender` as recipient.
    ///         After exit transfers remainder of LP tokens back to user
    /// @notice Can fail if there is not enough user balance
    /// @notice Only available before maturity since exiting AMM with exact amounts is disallowed after maturity
    /// @param tempusAMM TempusAMM instance to withdraw liquidity from
    /// @param principals Amount of Principals to redeem
    /// @param yields Amount of Yields to redeem
    /// @param principalsStaked Amount of staked principals (in TempusAMM) to redeem
    /// @param yieldsStaked Amount of staked yields (in TempusAMM) to redeem
    /// @param maxLpTokensToRedeem Maximum amount of LP tokens to spend for staked shares redemption
    /// @param toBackingToken If true redeems to backing token, otherwise redeems to yield bearing
    function exitAmmGivenAmountsOutAndEarlyRedeem(
        ITempusAMM tempusAMM,
        uint256 principals,
        uint256 yields,
        uint256 principalsStaked,
        uint256 yieldsStaked,
        uint256 maxLpTokensToRedeem,
        bool toBackingToken
    ) external nonReentrant {
        requireRegistered(address(tempusAMM));
        _exitAmmGivenAmountsOutAndEarlyRedeem(
            tempusAMM,
            principals,
            yields,
            principalsStaked,
            yieldsStaked,
            maxLpTokensToRedeem,
            toBackingToken
        );
    }

    /// @dev Withdraws ALL liquidity from TempusAMM and redeems Shares to Yield Bearing or Backing Tokens
    /// @notice `msg.sender` needs to approve controller for whole balance of LP token
    /// @notice Can fail if there is not enough user balance
    /// @param tempusAMM TempusAMM instance to withdraw liquidity from
    /// @param lpTokens Number of Lp tokens to redeem
    /// @param principals Number of Principals to redeem
    /// @param yields Number of Yields to redeem
    /// @param minPrincipalsStaked Minimum amount of staked principals to redeem for `lpTokens`
    /// @param minYieldsStaked Minimum amount of staked yields to redeem for `lpTokens`
    /// @param maxLeftoverShares Maximum amount of Principals or Yields to be left in case of early exit
    /// @param yieldsRate Base exchange rate of TYS (denominated in TPS)
    /// @param maxSlippage Maximum allowed change in the exchange rate from the base @param yieldsRate (1e18 precision)
    /// @param toBackingToken If true redeems to backing token, otherwise redeems to yield bearing
    /// @param deadline A timestamp by which, if a swap is necessary, the transaction must be completed,
    ///    otherwise it would revert
    function exitAmmGivenLpAndRedeem(
        ITempusAMM tempusAMM,
        uint256 lpTokens,
        uint256 principals,
        uint256 yields,
        uint256 minPrincipalsStaked,
        uint256 minYieldsStaked,
        uint256 maxLeftoverShares,
        uint256 yieldsRate,
        uint256 maxSlippage,
        bool toBackingToken,
        uint256 deadline
    ) external nonReentrant {
        requireRegistered(address(tempusAMM));
        if (lpTokens > 0) {
            // if there is LP balance, transfer to controller
            require(tempusAMM.transferFrom(msg.sender, address(this), lpTokens), "LP token transfer failed");

            // exit amm and sent shares to controller
            uint256[] memory minAmountsOutFromLP = getAMMOrderedAmounts(
                tempusAMM,
                minPrincipalsStaked,
                minYieldsStaked
            );
            _exitTempusAMMGivenLP(tempusAMM, address(this), address(this), lpTokens, minAmountsOutFromLP, false);
        }

        _redeemWithEqualShares(
            tempusAMM,
            principals,
            yields,
            maxLeftoverShares,
            yieldsRate,
            maxSlippage,
            deadline,
            toBackingToken
        );
    }

    function swap(
        ITempusAMM tempusAMM,
        uint256 swapAmount,
        IERC20 tokenIn,
        IERC20 tokenOut,
        uint256 minReturn,
        uint256 deadline
    ) private {
        require(swapAmount > 0, "Invalid swap amount.");
        tokenIn.safeIncreaseAllowance(address(tempusAMM.getVault()), swapAmount);

        (IVault vault, bytes32 poolId, , ) = _getAMMDetailsAndEnsureInitialized(tempusAMM);

        IVault.SingleSwap memory singleSwap = IVault.SingleSwap({
            poolId: poolId,
            kind: IVault.SwapKind.GIVEN_IN,
            assetIn: tokenIn,
            assetOut: tokenOut,
            amount: swapAmount,
            userData: ""
        });

        IVault.FundManagement memory fundManagement = IVault.FundManagement({
            sender: address(this),
            fromInternalBalance: false,
            recipient: payable(address(this)),
            toInternalBalance: false
        });
        vault.swap(singleSwap, fundManagement, minReturn, deadline);
    }

    function _depositAndProvideLiquidity(
        ITempusAMM tempusAMM,
        uint256 tokenAmount,
        bool isBackingToken
    ) private {
        (
            IVault vault,
            bytes32 poolId,
            IERC20[] memory ammTokens,
            uint256[] memory ammBalances
        ) = _getAMMDetailsAndEnsureInitialized(tempusAMM);

        uint256 mintedShares = _deposit(tempusAMM.tempusPool(), tokenAmount, isBackingToken);

        uint256[] memory sharesUsed = _provideLiquidity(
            address(this),
            vault,
            poolId,
            ammTokens,
            ammBalances,
            mintedShares,
            msg.sender
        );

        // Send remaining Shares to user
        if (mintedShares > sharesUsed[0]) {
            ammTokens[0].safeTransfer(msg.sender, mintedShares - sharesUsed[0]);
        }
        if (mintedShares > sharesUsed[1]) {
            ammTokens[1].safeTransfer(msg.sender, mintedShares - sharesUsed[1]);
        }
    }

    function _provideLiquidity(
        address sender,
        IVault vault,
        bytes32 poolId,
        IERC20[] memory ammTokens,
        uint256[] memory ammBalances,
        uint256 sharesAmount,
        address recipient
    ) private returns (uint256[] memory) {
        uint256[] memory ammLiquidityProvisionAmounts = ammBalances.getLiquidityProvisionSharesAmounts(sharesAmount);

        if (sender != address(this)) {
            ammTokens[0].safeTransferFrom(sender, address(this), ammLiquidityProvisionAmounts[0]);
            ammTokens[1].safeTransferFrom(sender, address(this), ammLiquidityProvisionAmounts[1]);
        }

        ammTokens[0].safeIncreaseAllowance(address(vault), ammLiquidityProvisionAmounts[0]);
        ammTokens[1].safeIncreaseAllowance(address(vault), ammLiquidityProvisionAmounts[1]);

        IVault.JoinPoolRequest memory request = IVault.JoinPoolRequest({
            assets: ammTokens,
            maxAmountsIn: ammLiquidityProvisionAmounts,
            userData: abi.encode(uint8(ITempusAMM.JoinKind.EXACT_TOKENS_IN_FOR_BPT_OUT), ammLiquidityProvisionAmounts),
            fromInternalBalance: false
        });

        // Provide TPS/TYS liquidity to TempusAMM
        vault.joinPool(poolId, address(this), recipient, request);

        return ammLiquidityProvisionAmounts;
    }

    function _depositAndFix(
        ITempusAMM tempusAMM,
        uint256 tokenAmount,
        bool isBackingToken,
        uint256 minTYSRate,
        uint256 deadline
    ) private {
        ITempusPool targetPool = tempusAMM.tempusPool();
        IERC20 principalShares = IERC20(address(targetPool.principalShare()));
        IERC20 yieldShares = IERC20(address(targetPool.yieldShare()));

        uint256 swapAmount = _deposit(targetPool, tokenAmount, isBackingToken);

        yieldShares.safeIncreaseAllowance(address(tempusAMM.getVault()), swapAmount);
        uint256 minReturn = swapAmount.mulfV(minTYSRate, targetPool.backingTokenONE());
        swap(tempusAMM, swapAmount, yieldShares, principalShares, minReturn, deadline);

        // At this point all TYS must be swapped for TPS
        uint256 principalsBalance = principalShares.balanceOf(address(this));
        assert(principalsBalance > 0);

        principalShares.safeTransfer(msg.sender, principalsBalance);
    }

    function _deposit(
        ITempusPool targetPool,
        uint256 tokenAmount,
        bool isBackingToken
    ) private returns (uint256 mintedShares) {
        mintedShares = isBackingToken
            ? _depositBacking(targetPool, tokenAmount, address(this))
            : _depositYieldBearing(targetPool, tokenAmount, address(this));
    }

    function _depositYieldBearing(
        ITempusPool targetPool,
        uint256 yieldTokenAmount,
        address recipient
    ) private returns (uint256) {
        require(yieldTokenAmount > 0, "yieldTokenAmount is 0");

        IERC20 yieldBearingToken = IERC20(targetPool.yieldBearingToken());

        // Transfer funds from msg.sender to targetPool
        uint transferredYBT = yieldBearingToken.untrustedTransferFrom(
            msg.sender,
            address(targetPool),
            yieldTokenAmount
        );

        (uint mintedShares, uint depositedBT, uint fee, uint rate) = targetPool.onDepositYieldBearing(
            transferredYBT,
            recipient
        );

        emit Deposited(
            address(targetPool),
            msg.sender,
            recipient,
            transferredYBT,
            depositedBT,
            mintedShares,
            rate,
            fee
        );

        return mintedShares;
    }

    function _depositBacking(
        ITempusPool targetPool,
        uint256 backingTokenAmount,
        address recipient
    ) private returns (uint256) {
        require(backingTokenAmount > 0, "backingTokenAmount is 0");

        IERC20 backingToken = IERC20(targetPool.backingToken());

        // In case the underlying pool expects deposits in Ether (e.g. Lido),
        // it uses `backingToken = address(0)`.  Since we disallow 0-value deposits,
        // and `msg.value == backingTokenAmount`, this check here can be used to
        // distinguish between the two pool types.
        if (msg.value == 0) {
            // NOTE: We need to have this check here to avoid calling transfer on address(0),
            //       because that always succeeds.
            require(address(backingToken) != address(0), "Pool requires ETH deposits");

            backingTokenAmount = backingToken.untrustedTransferFrom(
                msg.sender,
                address(targetPool),
                backingTokenAmount
            );
        } else {
            require(address(backingToken) == address(0), "given TempusPool's Backing Token is not ETH");
            require(msg.value == backingTokenAmount, "ETH value does not match provided amount");
        }

        (uint256 mintedShares, uint256 depositedYBT, uint256 fee, uint256 interestRate) = targetPool.onDepositBacking{
            value: msg.value
        }(backingTokenAmount, recipient);

        emit Deposited(
            address(targetPool),
            msg.sender,
            recipient,
            depositedYBT,
            backingTokenAmount,
            mintedShares,
            interestRate,
            fee
        );

        return mintedShares;
    }

    function _redeemToYieldBearing(
        ITempusPool targetPool,
        address sender,
        uint256 principals,
        uint256 yields,
        address recipient
    ) private {
        require((principals > 0) || (yields > 0), "principalAmount and yieldAmount cannot both be 0");

        (uint redeemedYBT, uint fee, uint interestRate) = targetPool.redeem(sender, principals, yields, recipient);

        uint redeemedBT = targetPool.numAssetsPerYieldToken(redeemedYBT, targetPool.currentInterestRate());
        bool earlyRedeem = !targetPool.matured();
        emit Redeemed(
            address(targetPool),
            sender,
            recipient,
            principals,
            yields,
            redeemedYBT,
            redeemedBT,
            fee,
            interestRate,
            earlyRedeem
        );
    }

    function _redeemToBacking(
        ITempusPool targetPool,
        address sender,
        uint256 principals,
        uint256 yields,
        address recipient
    ) private {
        require((principals > 0) || (yields > 0), "principalAmount and yieldAmount cannot both be 0");

        (uint redeemedYBT, uint redeemedBT, uint fee, uint rate) = targetPool.redeemToBacking(
            sender,
            principals,
            yields,
            recipient
        );

        bool earlyRedeem = !targetPool.matured();
        emit Redeemed(
            address(targetPool),
            sender,
            recipient,
            principals,
            yields,
            redeemedYBT,
            redeemedBT,
            fee,
            rate,
            earlyRedeem
        );
    }

    function _exitTempusAMM(
        ITempusAMM tempusAMM,
        uint256 lpTokensAmount,
        uint256 principalAmountOutMin,
        uint256 yieldAmountOutMin,
        bool toInternalBalances
    ) private {
        require(tempusAMM.transferFrom(msg.sender, address(this), lpTokensAmount), "LP token transfer failed");

        uint256[] memory amounts = getAMMOrderedAmounts(tempusAMM, principalAmountOutMin, yieldAmountOutMin);
        _exitTempusAMMGivenLP(tempusAMM, address(this), msg.sender, lpTokensAmount, amounts, toInternalBalances);
    }

    function _exitTempusAMMGivenLP(
        ITempusAMM tempusAMM,
        address sender,
        address recipient,
        uint256 lpTokensAmount,
        uint256[] memory minAmountsOut,
        bool toInternalBalances
    ) private {
        require(lpTokensAmount > 0, "LP token amount is 0");

        (IVault vault, bytes32 poolId, IERC20[] memory ammTokens, ) = _getAMMDetailsAndEnsureInitialized(tempusAMM);

        IVault.ExitPoolRequest memory request = IVault.ExitPoolRequest({
            assets: ammTokens,
            minAmountsOut: minAmountsOut,
            userData: abi.encode(uint8(ITempusAMM.ExitKind.EXACT_BPT_IN_FOR_TOKENS_OUT), lpTokensAmount),
            toInternalBalance: toInternalBalances
        });
        vault.exitPool(poolId, sender, payable(recipient), request);
    }

    function _exitTempusAMMGivenAmountsOut(
        ITempusAMM tempusAMM,
        address sender,
        address recipient,
        uint256[] memory amountsOut,
        uint256 lpTokensAmountInMax,
        bool toInternalBalances
    ) private {
        (IVault vault, bytes32 poolId, IERC20[] memory ammTokens, ) = _getAMMDetailsAndEnsureInitialized(tempusAMM);

        IVault.ExitPoolRequest memory request = IVault.ExitPoolRequest({
            assets: ammTokens,
            minAmountsOut: amountsOut,
            userData: abi.encode(
                uint8(ITempusAMM.ExitKind.BPT_IN_FOR_EXACT_TOKENS_OUT),
                amountsOut,
                lpTokensAmountInMax
            ),
            toInternalBalance: toInternalBalances
        });
        vault.exitPool(poolId, sender, payable(recipient), request);
    }

    function _exitAmmGivenAmountsOutAndEarlyRedeem(
        ITempusAMM tempusAMM,
        uint256 principals,
        uint256 yields,
        uint256 principalsStaked,
        uint256 yieldsStaked,
        uint256 maxLpTokensToRedeem,
        bool toBackingToken
    ) private {
        ITempusPool tempusPool = tempusAMM.tempusPool();
        require(!tempusPool.matured(), "Pool already finalized");
        principals += principalsStaked;
        yields += yieldsStaked;
        require(principals == yields, "Needs equal amounts of shares before maturity");

        // transfer LP tokens to controller
        require(tempusAMM.transferFrom(msg.sender, address(this), maxLpTokensToRedeem), "LP token transfer failed");

        uint256[] memory amounts = getAMMOrderedAmounts(tempusAMM, principalsStaked, yieldsStaked);
        _exitTempusAMMGivenAmountsOut(tempusAMM, address(this), msg.sender, amounts, maxLpTokensToRedeem, false);

        // transfer remainder of LP tokens back to user
        uint256 lpTokenBalance = tempusAMM.balanceOf(address(this));
        require(tempusAMM.transferFrom(address(this), msg.sender, lpTokenBalance), "LP token transfer failed");

        if (toBackingToken) {
            _redeemToBacking(tempusPool, msg.sender, principals, yields, msg.sender);
        } else {
            _redeemToYieldBearing(tempusPool, msg.sender, principals, yields, msg.sender);
        }
    }

    function _redeemWithEqualShares(
        ITempusAMM tempusAMM,
        uint256 principals,
        uint256 yields,
        uint256 maxLeftoverShares,
        uint256 yieldsRate,
        uint256 maxSlippage,
        uint256 deadline,
        bool toBackingToken
    ) private {
        ITempusPool tempusPool = tempusAMM.tempusPool();

        IERC20 principalShare = IERC20(address(tempusPool.principalShare()));
        IERC20 yieldShare = IERC20(address(tempusPool.yieldShare()));
        require(principalShare.transferFrom(msg.sender, address(this), principals), "Principals transfer failed");
        require(yieldShare.transferFrom(msg.sender, address(this), yields), "Yields transfer failed");
        require(yieldsRate > 0, "yieldsRate must be greater than 0");
        require(maxSlippage <= 1e18, "maxSlippage can not be greater than 1e18");

        principals = principalShare.balanceOf(address(this));
        yields = yieldShare.balanceOf(address(this));

        if (!tempusPool.matured()) {
            if (((yields > principals) ? (yields - principals) : (principals - yields)) >= maxLeftoverShares) {
                (uint256 swapAmount, bool yieldsIn) = tempusAMM.getSwapAmountToEndWithEqualShares(
                    principals,
                    yields,
                    maxLeftoverShares
                );
                uint256 minReturn = yieldsIn
                    ? swapAmount.mulfV(yieldsRate, tempusPool.backingTokenONE())
                    : swapAmount.divfV(yieldsRate, tempusPool.backingTokenONE());

                minReturn = minReturn.mulfV(1e18 - maxSlippage, 1e18);

                swap(
                    tempusAMM,
                    swapAmount,
                    yieldsIn ? yieldShare : principalShare,
                    yieldsIn ? principalShare : yieldShare,
                    minReturn,
                    deadline
                );

                principals = principalShare.balanceOf(address(this));
                yields = yieldShare.balanceOf(address(this));
            }
            (yields, principals) = (principals <= yields) ? (principals, principals) : (yields, yields);
        }

        if (toBackingToken) {
            _redeemToBacking(tempusPool, address(this), principals, yields, msg.sender);
        } else {
            _redeemToYieldBearing(tempusPool, address(this), principals, yields, msg.sender);
        }
    }

    function _getAMMDetailsAndEnsureInitialized(ITempusAMM tempusAMM)
        private
        view
        returns (
            IVault vault,
            bytes32 poolId,
            IERC20[] memory ammTokens,
            uint256[] memory ammBalances
        )
    {
        vault = tempusAMM.getVault();
        poolId = tempusAMM.getPoolId();
        (ammTokens, ammBalances, ) = vault.getPoolTokens(poolId);
        require(
            ammTokens.length == 2 && ammBalances.length == 2 && ammBalances[0] > 0 && ammBalances[1] > 0,
            "AMM not initialized"
        );
    }

    function getAMMOrderedAmounts(
        ITempusAMM tempusAMM,
        uint256 principalAmount,
        uint256 yieldAmount
    ) private view returns (uint256[] memory) {
        IVault vault = tempusAMM.getVault();
        (IERC20[] memory ammTokens, , ) = vault.getPoolTokens(tempusAMM.getPoolId());
        uint256[] memory amounts = new uint256[](2);
        (amounts[0], amounts[1]) = (address(tempusAMM.tempusPool().principalShare()) == address(ammTokens[0]))
            ? (principalAmount, yieldAmount)
            : (yieldAmount, principalAmount);
        return amounts;
    }
}

File 2 of 16 : IERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @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);
}

File 3 of 16 : SafeERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.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;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    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));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    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");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    /**
     * @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");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

File 4 of 16 : ReentrancyGuard.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

File 5 of 16 : ITempusAMM.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.7.0;

import "./IVault.sol";
import "./../../ITempusPool.sol";

interface ITempusAMM {
    enum JoinKind {
        INIT,
        EXACT_TOKENS_IN_FOR_BPT_OUT
    }
    enum ExitKind {
        EXACT_BPT_IN_FOR_TOKENS_OUT,
        BPT_IN_FOR_EXACT_TOKENS_OUT
    }

    function getVault() external view returns (IVault);

    function getPoolId() external view returns (bytes32);

    function tempusPool() external view returns (ITempusPool);

    function balanceOf(address) external view returns (uint256);

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /// Calculates the expected returned swap amount
    /// @param amount The given input amount of tokens
    /// @param yieldShareIn Specifies whether to calculate the swap from TYS to TPS (if true) or from TPS to TYS
    /// @return The expected returned amount of outToken
    function getExpectedReturnGivenIn(uint256 amount, bool yieldShareIn) external view returns (uint256);

    /// @dev Returns amount that user needs to swap to end up with almost the same amounts of Principals and Yields
    /// @param principals User's Principals balance
    /// @param yields User's Yields balance
    /// @param threshold Maximum difference between final balances of Principals and Yields
    /// @return amountIn Amount of Principals or Yields that user needs to swap to end with almost equal amounts
    /// @return yieldsIn Specifies the "direction" of the swap -
    ///         whether Yields should be swapped for Principals (yieldsIn=true) or vice versa
    function getSwapAmountToEndWithEqualShares(
        uint256 principals,
        uint256 yields,
        uint256 threshold
    ) external view returns (uint256 amountIn, bool yieldsIn);

    /// @dev queries exiting TempusAMM with exact BPT tokens in
    /// @param bptAmountIn amount of LP tokens in
    /// @return principals Amount of principals that user would receive back
    /// @return yields Amount of yields that user would receive back
    function getExpectedTokensOutGivenBPTIn(uint256 bptAmountIn)
        external
        view
        returns (uint256 principals, uint256 yields);

    /// @dev queries exiting TempusAMM with exact tokens out
    /// @param principalsStaked amount of Principals to withdraw
    /// @param yieldsStaked amount of Yields to withdraw
    /// @return lpTokens Amount of Lp tokens that user would redeem
    function getExpectedBPTInGivenTokensOut(uint256 principalsStaked, uint256 yieldsStaked)
        external
        view
        returns (uint256 lpTokens);

    /// @dev queries joining TempusAMM with exact tokens in
    /// @param amountsIn amount of tokens to be added to the pool
    /// @return amount of LP tokens that could be received
    function getExpectedLPTokensForTokensIn(uint256[] memory amountsIn) external view returns (uint256);

    /// @dev This function returns the appreciation of one BPT relative to the
    /// underlying tokens. This starts at 1 when the pool is created and grows over time
    function getRate() external view returns (uint256);
}

File 6 of 16 : IVault.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.7.0;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface IVault {
    enum SwapKind {
        GIVEN_IN,
        GIVEN_OUT
    }

    struct SingleSwap {
        bytes32 poolId;
        SwapKind kind;
        IERC20 assetIn;
        IERC20 assetOut;
        uint256 amount;
        bytes userData;
    }
    struct FundManagement {
        address sender;
        bool fromInternalBalance;
        address payable recipient;
        bool toInternalBalance;
    }

    struct JoinPoolRequest {
        IERC20[] assets;
        uint256[] maxAmountsIn;
        bytes userData;
        bool fromInternalBalance;
    }

    struct ExitPoolRequest {
        IERC20[] assets;
        uint256[] minAmountsOut;
        bytes userData;
        bool toInternalBalance;
    }

    function swap(
        SingleSwap memory singleSwap,
        FundManagement memory funds,
        uint256 limit,
        uint256 deadline
    ) external payable returns (uint256);

    function joinPool(
        bytes32 poolId,
        address sender,
        address recipient,
        JoinPoolRequest memory request
    ) external payable;

    function exitPool(
        bytes32 poolId,
        address sender,
        address payable recipient,
        ExitPoolRequest memory request
    ) external;

    function getPoolTokens(bytes32 poolId)
        external
        view
        returns (
            IERC20[] memory tokens,
            uint256[] memory balances,
            uint256 lastChangeBlock
        );
}

File 7 of 16 : ITempusPool.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.7.6 <0.9.0;
pragma abicoder v2;

import "./token/IPoolShare.sol";
import "./utils/IOwnable.sol";
import "./utils/IVersioned.sol";

/// Setting and transferring of fees are restricted to the owner.
interface ITempusFees is IOwnable {
    /// The fees are in terms of yield bearing token (YBT).
    struct FeesConfig {
        uint256 depositPercent;
        uint256 earlyRedeemPercent;
        uint256 matureRedeemPercent;
    }

    /// Returns the current fee configuration.
    function getFeesConfig() external view returns (FeesConfig memory);

    /// Replace the current fee configuration with a new one.
    /// By default all the fees are expected to be set to zero.
    /// @notice This function can only be called by the owner.
    function setFeesConfig(FeesConfig calldata newFeesConfig) external;

    /// @return Maximum possible fee percentage that can be set for deposit
    function maxDepositFee() external view returns (uint256);

    /// @return Maximum possible fee percentage that can be set for early redeem
    function maxEarlyRedeemFee() external view returns (uint256);

    /// @return Maximum possible fee percentage that can be set for mature redeem
    function maxMatureRedeemFee() external view returns (uint256);

    /// Accumulated fees available for withdrawal.
    function totalFees() external view returns (uint256);

    /// Transfers accumulated Yield Bearing Token (YBT) fees
    /// from this pool contract to `recipient`.
    /// @param recipient Address which will receive the specified amount of YBT
    /// @notice This function can only be called by the owner.
    function transferFees(address recipient) external;
}

/// All state changing operations are restricted to the controller.
interface ITempusPool is ITempusFees, IVersioned {
    /// @return The name of underlying protocol, for example "Aave" for Aave protocol
    function protocolName() external view returns (bytes32);

    /// This token will be used as a token that user can deposit to mint same amounts
    /// of principal and interest shares.
    /// @return The underlying yield bearing token.
    function yieldBearingToken() external view returns (address);

    /// This is the address of the actual backing asset token
    /// in the case of ETH, this address will be 0
    /// @return Address of the Backing Token
    function backingToken() external view returns (address);

    /// @return uint256 value of one backing token, in case of 18 decimals 1e18
    function backingTokenONE() external view returns (uint256);

    /// @return This TempusPool's Tempus Principal Share (TPS)
    function principalShare() external view returns (IPoolShare);

    /// @return This TempusPool's Tempus Yield Share (TYS)
    function yieldShare() external view returns (IPoolShare);

    /// @return The TempusController address that is authorized to perform restricted actions
    function controller() external view returns (address);

    /// @return Start time of the pool.
    function startTime() external view returns (uint256);

    /// @return Maturity time of the pool.
    function maturityTime() external view returns (uint256);

    /// @return Time of exceptional halting of the pool.
    /// In case the pool is still in operation, this must return type(uint256).max.
    function exceptionalHaltTime() external view returns (uint256);

    /// @return The maximum allowed time (in seconds) to pass with negative yield.
    function maximumNegativeYieldDuration() external view returns (uint256);

    /// @return True if maturity has been reached and the pool was finalized.
    ///         This also includes the case when maturity was triggered due to
    ///         exceptional conditions (negative yield periods).
    function matured() external view returns (bool);

    /// Finalizes the pool. This can only happen on or after `maturityTime`.
    /// Once finalized depositing is not possible anymore, and the behaviour
    /// redemption will change.
    ///
    /// Can be called by anyone and can be called multiple times.
    function finalize() external;

    /// Yield bearing tokens deposit hook.
    /// @notice Deposit will fail if maturity has been reached.
    /// @notice This function can only be called by TempusController
    /// @notice This function assumes funds were already transferred to the TempusPool from the TempusController
    /// @param yieldTokenAmount Amount of yield bearing tokens to deposit in YieldToken decimal precision
    /// @param recipient Address which will receive Tempus Principal Shares (TPS) and Tempus Yield Shares (TYS)
    /// @return mintedShares Amount of TPS and TYS minted to `recipient`
    /// @return depositedBT The YBT value deposited, denominated as Backing Tokens
    /// @return fee The fee which was deducted (in terms of YBT)
    /// @return rate The interest rate at the time of the deposit
    function onDepositYieldBearing(uint256 yieldTokenAmount, address recipient)
        external
        returns (
            uint256 mintedShares,
            uint256 depositedBT,
            uint256 fee,
            uint256 rate
        );

    /// Backing tokens deposit hook.
    /// @notice Deposit will fail if maturity has been reached.
    /// @notice This function can only be called by TempusController
    /// @notice This function assumes funds were already transferred to the TempusPool from the TempusController
    /// @param backingTokenAmount amount of Backing Tokens to be deposited to underlying protocol in BackingToken decimal precision
    /// @param recipient Address which will receive Tempus Principal Shares (TPS) and Tempus Yield Shares (TYS)
    /// @return mintedShares Amount of TPS and TYS minted to `recipient`
    /// @return depositedYBT The BT value deposited, denominated as Yield Bearing Tokens
    /// @return fee The fee which was deducted (in terms of YBT)
    /// @return rate The interest rate at the time of the deposit
    function onDepositBacking(uint256 backingTokenAmount, address recipient)
        external
        payable
        returns (
            uint256 mintedShares,
            uint256 depositedYBT,
            uint256 fee,
            uint256 rate
        );

    /// Redeems yield bearing tokens from this TempusPool
    ///      msg.sender will receive the YBT
    ///      NOTE #1 Before maturity, principalAmount must equal to yieldAmount.
    ///      NOTE #2 This function can only be called by TempusController
    /// @param from Address to redeem its Tempus Shares
    /// @param principalAmount Amount of Tempus Principal Shares (TPS) to redeem for YBT in PrincipalShare decimal precision
    /// @param yieldAmount Amount of Tempus Yield Shares (TYS) to redeem for YBT in YieldShare decimal precision
    /// @param recipient Address to which redeemed YBT will be sent
    /// @return redeemableYieldTokens Amount of Yield Bearing Tokens redeemed to `recipient`
    /// @return fee The fee which was deducted (in terms of YBT)
    /// @return rate The interest rate at the time of the redemption
    function redeem(
        address from,
        uint256 principalAmount,
        uint256 yieldAmount,
        address recipient
    )
        external
        returns (
            uint256 redeemableYieldTokens,
            uint256 fee,
            uint256 rate
        );

    /// Redeems TPS+TYS held by msg.sender into backing tokens
    ///      `msg.sender` must approve TPS and TYS amounts to this TempusPool.
    ///      `msg.sender` will receive the backing tokens
    ///      NOTE #1 Before maturity, principalAmount must equal to yieldAmount.
    ///      NOTE #2 This function can only be called by TempusController
    /// @param from Address to redeem its Tempus Shares
    /// @param principalAmount Amount of Tempus Principal Shares (TPS) to redeem in PrincipalShare decimal precision
    /// @param yieldAmount Amount of Tempus Yield Shares (TYS) to redeem in YieldShare decimal precision
    /// @param recipient Address to which redeemed BT will be sent
    /// @return redeemableYieldTokens Amount of Backing Tokens redeemed to `recipient`, denominated in YBT
    /// @return redeemableBackingTokens Amount of Backing Tokens redeemed to `recipient`
    /// @return fee The fee which was deducted (in terms of YBT)
    /// @return rate The interest rate at the time of the redemption
    function redeemToBacking(
        address from,
        uint256 principalAmount,
        uint256 yieldAmount,
        address recipient
    )
        external
        payable
        returns (
            uint256 redeemableYieldTokens,
            uint256 redeemableBackingTokens,
            uint256 fee,
            uint256 rate
        );

    /// Gets the estimated amount of Principals and Yields after a successful deposit
    /// @param amount Amount of BackingTokens or YieldBearingTokens that would be deposited
    /// @param isBackingToken If true, @param amount is in BackingTokens, otherwise YieldBearingTokens
    /// @return Amount of Principals (TPS) and Yields (TYS) in Principal/YieldShare decimal precision
    ///         TPS and TYS are minted in 1:1 ratio, hence a single return value.
    function estimatedMintedShares(uint256 amount, bool isBackingToken) external view returns (uint256);

    /// Gets the estimated amount of YieldBearingTokens or BackingTokens received when calling `redeemXXX()` functions
    /// @param principals Amount of Principals (TPS) in PrincipalShare decimal precision
    /// @param yields Amount of Yields (TYS) in YieldShare decimal precision
    /// @param toBackingToken If true, redeem amount is estimated in BackingTokens instead of YieldBearingTokens
    /// @return Amount of YieldBearingTokens or BackingTokens in YBT/BT decimal precision
    function estimatedRedeem(
        uint256 principals,
        uint256 yields,
        bool toBackingToken
    ) external view returns (uint256);

    /// @dev This returns the stored Interest Rate of the YBT (Yield Bearing Token) pool
    ///      it is safe to call this after updateInterestRate() was called
    /// @return Stored Interest Rate, decimal precision depends on specific TempusPool implementation
    function currentInterestRate() external view returns (uint256);

    /// @return Initial interest rate of the underlying pool,
    ///         decimal precision depends on specific TempusPool implementation
    function initialInterestRate() external view returns (uint256);

    /// @return Interest rate at maturity of the underlying pool (or 0 if maturity not reached yet)
    ///         decimal precision depends on specific TempusPool implementation
    function maturityInterestRate() external view returns (uint256);

    /// @return Rate of one Tempus Yield Share expressed in Asset Tokens
    function pricePerYieldShare() external returns (uint256);

    /// @return Rate of one Tempus Principal Share expressed in Asset Tokens
    function pricePerPrincipalShare() external returns (uint256);

    /// Calculated with stored interest rates
    /// @return Rate of one Tempus Yield Share expressed in Asset Tokens,
    function pricePerYieldShareStored() external view returns (uint256);

    /// Calculated with stored interest rates
    /// @return Rate of one Tempus Principal Share expressed in Asset Tokens
    function pricePerPrincipalShareStored() external view returns (uint256);

    /// @dev This returns actual Backing Token amount for amount of YBT (Yield Bearing Tokens)
    ///      For example, in case of Aave and Lido the result is 1:1,
    ///      and for compound is `yieldTokens * currentInterestRate`
    /// @param yieldTokens Amount of YBT in YBT decimal precision
    /// @param interestRate The current interest rate
    /// @return Amount of Backing Tokens for specified @param yieldTokens
    function numAssetsPerYieldToken(uint yieldTokens, uint interestRate) external view returns (uint);

    /// @dev This returns amount of YBT (Yield Bearing Tokens) that can be converted
    ///      from @param backingTokens Backing Tokens
    /// @param backingTokens Amount of Backing Tokens in BT decimal precision
    /// @param interestRate The current interest rate
    /// @return Amount of YBT for specified @param backingTokens
    function numYieldTokensPerAsset(uint backingTokens, uint interestRate) external view returns (uint);
}

File 8 of 16 : Fixed256xVar.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.10;

/// @dev Fixed Point decimal math utils for variable decimal point precision
///      on 256-bit wide numbers
library Fixed256xVar {
    /// @dev Multiplies two variable precision fixed point decimal numbers
    /// @param one 1.0 expressed in the base precision of `a` and `b`
    /// @return result = a * b
    function mulfV(
        uint256 a,
        uint256 b,
        uint256 one
    ) internal pure returns (uint256) {
        // result is always truncated
        return (a * b) / one;
    }

    /// @dev Divides two variable precision fixed point decimal numbers
    /// @param one 1.0 expressed in the base precision of `a` and `b`
    /// @return result = a / b
    function divfV(
        uint256 a,
        uint256 b,
        uint256 one
    ) internal pure returns (uint256) {
        // result is always truncated
        return (a * one) / b;
    }
}

File 9 of 16 : AMMBalancesHelper.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.10;

import "../math/Fixed256xVar.sol";

library AMMBalancesHelper {
    using Fixed256xVar for uint256;

    uint256 internal constant ONE = 1e18;

    function getLiquidityProvisionSharesAmounts(uint256[] memory ammBalances, uint256 shares)
        internal
        pure
        returns (uint256[] memory)
    {
        uint256[2] memory ammDepositPercentages = getAMMBalancesRatio(ammBalances);
        uint256[] memory ammLiquidityProvisionAmounts = new uint256[](2);

        (ammLiquidityProvisionAmounts[0], ammLiquidityProvisionAmounts[1]) = (
            shares.mulfV(ammDepositPercentages[0], ONE),
            shares.mulfV(ammDepositPercentages[1], ONE)
        );

        return ammLiquidityProvisionAmounts;
    }

    function getAMMBalancesRatio(uint256[] memory ammBalances) internal pure returns (uint256[2] memory balancesRatio) {
        uint256 rate = ammBalances[0].divfV(ammBalances[1], ONE);

        (balancesRatio[0], balancesRatio[1]) = rate > ONE ? (ONE, ONE.divfV(rate, ONE)) : (rate, ONE);
    }
}

File 10 of 16 : UntrustedERC20.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.10;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

/// @title UntrustedERC20
/// @dev Wrappers around ERC20 transfer operators that return the actual amount
/// transferred. This means they are usable with tokens, which charge a fee or royalty on transfer.
library UntrustedERC20 {
    using SafeERC20 for IERC20;

    /// Transfer tokens to a recipient.
    /// @param token The ERC20 token.
    /// @param to The recipient.
    /// @param value The requested amount.
    /// @return The actual amount of tokens transferred.
    function untrustedTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal returns (uint256) {
        uint256 startBalance = token.balanceOf(to);
        token.safeTransfer(to, value);
        return token.balanceOf(to) - startBalance;
    }

    /// Transfer tokens to a recipient.
    /// @param token The ERC20 token.
    /// @param from The sender.
    /// @param to The recipient.
    /// @param value The requested amount.
    /// @return The actual amount of tokens transferred.
    function untrustedTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal returns (uint256) {
        uint256 startBalance = token.balanceOf(to);
        token.safeTransferFrom(from, to, value);
        return token.balanceOf(to) - startBalance;
    }
}

File 11 of 16 : Ownable.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.10;

import "./IOwnable.sol";

/// Implements Ownable with a two step transfer of ownership
abstract contract Ownable is IOwnable {
    address private _owner;
    address private _proposedOwner;

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _setOwner(msg.sender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual override returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == msg.sender, "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Proposes a transfer of ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual override onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _proposedOwner = newOwner;
        emit OwnershipProposed(_owner, _proposedOwner);
    }

    /**
     * @dev Accepts ownership of the contract by a proposed account.
     * Can only be called by the proposed owner.
     */
    function acceptOwnership() public virtual override {
        require(msg.sender == _proposedOwner, "Ownable: Only proposed owner can accept ownership");
        _setOwner(_proposedOwner);
        _proposedOwner = address(0);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 12 of 16 : Versioned.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.7.6 <0.9.0;

import "./IVersioned.sol";

/// Implements versioning
abstract contract Versioned is IVersioned {
    uint16 private immutable _major;
    uint16 private immutable _minor;
    uint16 private immutable _patch;

    constructor(
        uint16 major,
        uint16 minor,
        uint16 patch
    ) {
        _major = major;
        _minor = minor;
        _patch = patch;
    }

    function version() external view returns (Version memory) {
        return Version(_major, _minor, _patch);
    }
}

File 13 of 16 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @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
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 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://diligence.consensys.net/posts/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/v0.5.11/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 functionCall(target, data, "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");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return _verifyCallResult(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) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(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) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) private pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // 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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 14 of 16 : IPoolShare.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.7.6 <0.9.0;

import "../ITempusPool.sol";

/// Interface of Tokens representing the principal or yield shares of a pool.
interface IPoolShare {
    enum ShareKind {
        Principal,
        Yield
    }

    /// @return The kind of the share.
    function kind() external view returns (ShareKind);

    /// @return The pool this share is part of.
    function pool() external view returns (ITempusPool);

    /// @dev Price per single share expressed in Backing Tokens of the underlying pool.
    ///      This is for the purpose of TempusAMM api support.
    ///      Example: exchanging Tempus Yield Share to DAI
    /// @return 1e18 decimal conversion rate per share
    function getPricePerFullShare() external returns (uint256);

    /// @return 1e18 decimal stored conversion rate per share
    function getPricePerFullShareStored() external view returns (uint256);
}

File 15 of 16 : IOwnable.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.7.6 <0.9.0;

/// Implements Ownable with a two step transfer of ownership
interface IOwnable {
    /**
     * @dev Change of ownership proposed.
     * @param currentOwner The current owner.
     * @param proposedOwner The proposed owner.
     */
    event OwnershipProposed(address indexed currentOwner, address indexed proposedOwner);

    /**
     * @dev Ownership transferred.
     * @param previousOwner The previous owner.
     * @param newOwner The new owner.
     */
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() external view returns (address);

    /**
     * @dev Proposes a transfer of ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) external;

    /**
     * @dev Accepts ownership of the contract by a proposed account.
     * Can only be called by the proposed owner.
     */
    function acceptOwnership() external;
}

File 16 of 16 : IVersioned.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.7.6 <0.9.0;
pragma abicoder v2;

/// Implements versioning
interface IVersioned {
    struct Version {
        uint16 major;
        uint16 minor;
        uint16 patch;
    }

    /// @return The version of the contract.
    function version() external view returns (Version memory);
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 100000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"pool","type":"address"},{"indexed":true,"internalType":"address","name":"depositor","type":"address"},{"indexed":true,"internalType":"address","name":"recipient","type":"address"},{"indexed":false,"internalType":"uint256","name":"yieldTokenAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"backingTokenValue","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"shareAmounts","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"interestRate","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"fee","type":"uint256"}],"name":"Deposited","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"currentOwner","type":"address"},{"indexed":true,"internalType":"address","name":"proposedOwner","type":"address"}],"name":"OwnershipProposed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"pool","type":"address"},{"indexed":true,"internalType":"address","name":"redeemer","type":"address"},{"indexed":true,"internalType":"address","name":"recipient","type":"address"},{"indexed":false,"internalType":"uint256","name":"principalShareAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"yieldShareAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"yieldTokenAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"backingTokenValue","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"interestRate","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"fee","type":"uint256"},{"indexed":false,"internalType":"bool","name":"isEarlyRedeem","type":"bool"}],"name":"Redeemed","type":"event"},{"inputs":[],"name":"acceptOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract ITempusAMM","name":"tempusAMM","type":"address"},{"internalType":"uint256","name":"tokenAmount","type":"uint256"},{"internalType":"bool","name":"isBackingToken","type":"bool"},{"internalType":"uint256","name":"minTYSRate","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"depositAndFix","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"contract ITempusAMM","name":"tempusAMM","type":"address"},{"internalType":"uint256","name":"tokenAmount","type":"uint256"},{"internalType":"bool","name":"isBackingToken","type":"bool"}],"name":"depositAndProvideLiquidity","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"contract ITempusPool","name":"targetPool","type":"address"},{"internalType":"uint256","name":"backingTokenAmount","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"name":"depositBacking","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"contract ITempusPool","name":"targetPool","type":"address"},{"internalType":"uint256","name":"yieldTokenAmount","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"name":"depositYieldBearing","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract ITempusAMM","name":"tempusAMM","type":"address"},{"internalType":"uint256","name":"principals","type":"uint256"},{"internalType":"uint256","name":"yields","type":"uint256"},{"internalType":"uint256","name":"principalsStaked","type":"uint256"},{"internalType":"uint256","name":"yieldsStaked","type":"uint256"},{"internalType":"uint256","name":"maxLpTokensToRedeem","type":"uint256"},{"internalType":"bool","name":"toBackingToken","type":"bool"}],"name":"exitAmmGivenAmountsOutAndEarlyRedeem","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract ITempusAMM","name":"tempusAMM","type":"address"},{"internalType":"uint256","name":"lpTokens","type":"uint256"},{"internalType":"uint256","name":"principals","type":"uint256"},{"internalType":"uint256","name":"yields","type":"uint256"},{"internalType":"uint256","name":"minPrincipalsStaked","type":"uint256"},{"internalType":"uint256","name":"minYieldsStaked","type":"uint256"},{"internalType":"uint256","name":"maxLeftoverShares","type":"uint256"},{"internalType":"uint256","name":"yieldsRate","type":"uint256"},{"internalType":"uint256","name":"maxSlippage","type":"uint256"},{"internalType":"bool","name":"toBackingToken","type":"bool"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"exitAmmGivenLpAndRedeem","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract ITempusAMM","name":"tempusAMM","type":"address"},{"internalType":"uint256","name":"lpTokensAmount","type":"uint256"},{"internalType":"uint256","name":"principalAmountOutMin","type":"uint256"},{"internalType":"uint256","name":"yieldAmountOutMin","type":"uint256"},{"internalType":"bool","name":"toInternalBalances","type":"bool"}],"name":"exitTempusAMM","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract ITempusAMM","name":"tempusAMM","type":"address"},{"internalType":"uint256","name":"sharesAmount","type":"uint256"}],"name":"provideLiquidity","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract ITempusPool","name":"targetPool","type":"address"},{"internalType":"uint256","name":"principalAmount","type":"uint256"},{"internalType":"uint256","name":"yieldAmount","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"name":"redeemToBacking","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract ITempusPool","name":"targetPool","type":"address"},{"internalType":"uint256","name":"principalAmount","type":"uint256"},{"internalType":"uint256","name":"yieldAmount","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"name":"redeemToYieldBearing","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"authorizedContract","type":"address"},{"internalType":"bool","name":"isValid","type":"bool"}],"name":"register","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"version","outputs":[{"components":[{"internalType":"uint16","name":"major","type":"uint16"},{"internalType":"uint16","name":"minor","type":"uint16"},{"internalType":"uint16","name":"patch","type":"uint16"}],"internalType":"struct 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Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.