Contract 0xf9fada9660a7726a0c5f3063246f498b18de5f58

// SPDX-License-Identifier: CAL
pragma solidity =0.8.10;

import "@openzeppelin/contracts/proxy/utils/Initializable.sol";

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
//solhint-disable-next-line max-line-length
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "../math/SaturatingMath.sol";
import {TierReport} from "./libraries/TierReport.sol";
import {ValueTier} from "./ValueTier.sol";
import "./ReadWriteTier.sol";

/// @param erc20_ The erc20 token contract to transfer balances
/// from/to during `setTier`.
/// @param tierValues_ 8 values corresponding to minimum erc20
/// balances for tiers ONE through EIGHT.
struct ERC20TransferTierConfig {
    IERC20 erc20;
    uint256[8] tierValues;
}

/// @title ERC20TransferTier
/// @notice `ERC20TransferTier` inherits from `ReadWriteTier`.
///
/// In addition to the standard accounting it requires that users transfer
/// erc20 tokens to achieve a tier.
///
/// Data is ignored, the only requirement is that the user has approved
/// sufficient balance to gain the next tier.
///
/// To avoid griefing attacks where accounts remove tiers from arbitrary third
/// parties, we `require(msg.sender == account_);` when a tier is removed.
/// When a tier is added the `msg.sender` is responsible for payment.
///
/// The 8 values for gainable tiers and erc20 contract must be set upon
/// construction and are immutable.
///
/// The `_afterSetTier` simply transfers the diff between the start/end tier
/// to/from the user as required.
///
/// If a user sends erc20 tokens directly to the contract without calling
/// `setTier` the FUNDS ARE LOST.
///
/// @dev The `ERC20TransferTier` takes ownership of an erc20 balance by
/// transferring erc20 token to itself. The `msg.sender` must pay the
/// difference on upgrade; the tiered address receives refunds on downgrade.
/// This allows users to "gift" tiers to each other.
/// As the transfer is a state changing event we can track historical block
/// times.
/// As the tiered address moves up/down tiers it sends/receives the value
/// difference between its current tier only.
///
/// The user is required to preapprove enough erc20 to cover the tier change or
/// they will fail and lose gas.
///
/// `ERC20TransferTier` is useful for:
/// - Claims that rely on historical holdings so the tiered address
///   cannot simply "flash claim"
/// - Token demand and lockup where liquidity (trading) is a secondary goal
/// - erc20 tokens without additonal restrictions on transfer
contract ERC20TransferTier is ReadWriteTier, ValueTier, Initializable {
    using SafeERC20 for IERC20;
    using SaturatingMath for uint256;

    /// Result of initialize.
    /// @param sender `msg.sender` of the initialize.
    /// @param erc20 erc20 to transfer.
    event Initialize(address sender, address erc20);

    /// The erc20 to transfer balances of.
    IERC20 internal erc20;

    /// @param config_ Constructor config.
    function initialize(ERC20TransferTierConfig memory config_)
        external
        initializer
    {
        initializeValueTier(config_.tierValues);
        erc20 = config_.erc20;
        emit Initialize(msg.sender, address(config_.erc20));
    }

    /// Transfers balances of erc20 from/to the tiered account according to the
    /// difference in values. Any failure to transfer in/out will rollback the
    /// tier change. The tiered account must ensure sufficient approvals before
    /// attempting to set a new tier.
    /// The `msg.sender` is responsible for paying the token cost of a tier
    /// increase.
    /// The tiered account is always the recipient of a refund on a tier
    /// decrease.
    /// @inheritdoc ReadWriteTier
    function _afterSetTier(
        address account_,
        uint256 startTier_,
        uint256 endTier_,
        bytes calldata
    ) internal override {
        // As _anyone_ can call `setTier` we require that `msg.sender` and
        // `account_` are the same if the end tier is not an improvement.
        // Anyone can increase anyone else's tier as the `msg.sender` is
        // responsible to pay the difference.
        if (endTier_ <= startTier_) {
            require(msg.sender == account_, "DELEGATED_TIER_LOSS");
        }

        uint256[8] memory tierValues_ = tierValues();

        // Handle the erc20 transfer.
        // Convert the start tier to an erc20 amount.
        uint256 startValue_ = tierToValue(tierValues_, startTier_);
        // Convert the end tier to an erc20 amount.
        uint256 endValue_ = tierToValue(tierValues_, endTier_);

        unchecked {
            // Short circuit if the values are the same for both tiers.
            if (endValue_ == startValue_) {
                return;
            }
            if (endValue_ > startValue_) {
                // Going up, take ownership of erc20 from the `msg.sender`.
                erc20.safeTransferFrom(
                    msg.sender,
                    address(this),
                    endValue_ - startValue_
                );
            } else {
                // Going down, process a refund for the tiered account.
                // Guaranteed to be `msg.sender` for a tier loss (see above) and
                // using `msg.sender` is cheaper gas than using `account_`.
                erc20.safeTransfer(msg.sender, startValue_ - endValue_);
            }
        }
    }
}

// SPDX-License-Identifier: CAL
pragma solidity =0.8.10;

/// @title SaturatingMath
/// @notice Sometimes we neither want math operations to error nor wrap around
/// on an overflow or underflow. In the case of transferring assets an error
/// may cause assets to be locked in an irretrievable state within the erroring
/// contract, e.g. due to a tiny rounding/calculation error. We also can't have
/// assets underflowing and attempting to approve/transfer "infinity" when we
/// wanted "almost or exactly zero" but some calculation bug underflowed zero.
/// Ideally there are no calculation mistakes, but in guarding against bugs it
/// may be safer pragmatically to saturate arithmatic at the numeric bounds.
/// Note that saturating div is not supported because 0/0 is undefined.
library SaturatingMath {
    /// Saturating addition.
    /// @param a_ First term.
    /// @param b_ Second term.
    /// @return Minimum of a_ + b_ and max uint256.
    function saturatingAdd(uint256 a_, uint256 b_)
        internal
        pure
        returns (uint256)
    {
        unchecked {
            uint256 c_ = a_ + b_;
            return c_ < a_ ? type(uint256).max : c_;
        }
    }

    /// Saturating subtraction.
    /// @param a_ Minuend.
    /// @param b_ Subtrahend.
    /// @return Maximum of a_ - b_ and 0.
    function saturatingSub(uint256 a_, uint256 b_)
        internal
        pure
        returns (uint256)
    {
        unchecked {
            return a_ > b_ ? a_ - b_ : 0;
        }
    }

    /// Saturating multiplication.
    /// @param a_ First term.
    /// @param b_ Second term.
    /// @return Minimum of a_ * b_ and max uint256.
    function saturatingMul(uint256 a_, uint256 b_)
        internal
        pure
        returns (uint256)
    {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being
            // zero, but the benefit is lost if 'b' is also tested.
            // https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a_ == 0) return 0;
            uint256 c_ = a_ * b_;
            return c_ / a_ != b_ ? type(uint256).max : c_;
        }
    }
}

// SPDX-License-Identifier: CAL
pragma solidity =0.8.10;

import {ITier} from "../ITier.sol";
import "./TierConstants.sol";

/// @title TierReport
/// @notice `TierReport` implements several pure functions that can be
/// used to interface with reports.
/// - `tierAtBlockFromReport`: Returns the highest status achieved relative to
/// a block number and report. Statuses gained after that block are ignored.
/// - `tierBlock`: Returns the block that a given tier has been held
/// since according to a report.
/// - `truncateTiersAbove`: Resets all the tiers above the reference tier.
/// - `updateBlocksForTierRange`: Updates a report with a block
/// number for every tier in a range.
/// - `updateReportWithTierAtBlock`: Updates a report to a new tier.
/// @dev Utilities to consistently read, write and manipulate tiers in reports.
/// The low-level bit shifting can be difficult to get right so this
/// factors that out.
library TierReport {
    /// Enforce upper limit on tiers so we can do unchecked math.
    /// @param tier_ The tier to enforce bounds on.
    modifier maxTier(uint256 tier_) {
        require(tier_ <= TierConstants.MAX_TIER, "MAX_TIER");
        _;
    }

    /// Returns the highest tier achieved relative to a block number
    /// and report.
    ///
    /// Note that typically the report will be from the _current_ contract
    /// state, i.e. `block.number` but not always. Tiers gained after the
    /// reference block are ignored.
    ///
    /// When the `report` comes from a later block than the `blockNumber` this
    /// means the user must have held the tier continuously from `blockNumber`
    /// _through_ to the report block.
    /// I.e. NOT a snapshot.
    ///
    /// @param report_ A report as per `ITier`.
    /// @param blockNumber_ The block number to check the tiers against.
    /// @return The highest tier held since `blockNumber` as per `report`.
    function tierAtBlockFromReport(uint256 report_, uint256 blockNumber_)
        internal
        pure
        returns (uint256)
    {
        unchecked {
            for (uint256 i_ = 0; i_ < 8; i_++) {
                if (uint32(uint256(report_ >> (i_ * 32))) > blockNumber_) {
                    return i_;
                }
            }
            return TierConstants.MAX_TIER;
        }
    }

    /// Returns the block that a given tier has been held since from a report.
    ///
    /// The report MUST encode "never" as 0xFFFFFFFF. This ensures
    /// compatibility with `tierAtBlockFromReport`.
    ///
    /// @param report_ The report to read a block number from.
    /// @param tier_ The Tier to read the block number for.
    /// @return The block number this has been held since.
    function tierBlock(uint256 report_, uint256 tier_)
        internal
        pure
        maxTier(tier_)
        returns (uint256)
    {
        unchecked {
            // ZERO is a special case. Everyone has always been at least ZERO,
            // since block 0.
            if (tier_ == 0) {
                return 0;
            }

            uint256 offset_ = (tier_ - 1) * 32;
            return uint256(uint32(uint256(report_ >> offset_)));
        }
    }

    /// Resets all the tiers above the reference tier to 0xFFFFFFFF.
    ///
    /// @param report_ Report to truncate with high bit 1s.
    /// @param tier_ Tier to truncate above (exclusive).
    /// @return Truncated report.
    function truncateTiersAbove(uint256 report_, uint256 tier_)
        internal
        pure
        maxTier(tier_)
        returns (uint256)
    {
        unchecked {
            uint256 offset_ = tier_ * 32;
            uint256 mask_ = (TierConstants.NEVER_REPORT >> offset_) << offset_;
            return report_ | mask_;
        }
    }

    /// Updates a report with a block number for a given tier.
    /// More gas efficient than `updateBlocksForTierRange` if only a single
    /// tier is being modified.
    /// The tier at/above the given tier is updated. E.g. tier `0` will update
    /// the block for tier `1`.
    /// @param report_ Report to use as the baseline for the updated report.
    /// @param tier_ The tier level to update.
    /// @param blockNumber_ The new block number for `tier_`.
    function updateBlockAtTier(
        uint256 report_,
        uint256 tier_,
        uint256 blockNumber_
    ) internal pure maxTier(tier_) returns (uint256) {
        unchecked {
            uint256 offset_ = tier_ * 32;
            return
                (report_ &
                    ~uint256(uint256(TierConstants.NEVER_TIER) << offset_)) |
                uint256(blockNumber_ << offset_);
        }
    }

    /// Updates a report with a block number for every tier in a range.
    ///
    /// Does nothing if the end status is equal or less than the start tier.
    /// @param report_ The report to update.
    /// @param startTier_ The tier at the start of the range (exclusive).
    /// @param endTier_ The tier at the end of the range (inclusive).
    /// @param blockNumber_ The block number to set for every tier in the
    /// range.
    /// @return The updated report.
    function updateBlocksForTierRange(
        uint256 report_,
        uint256 startTier_,
        uint256 endTier_,
        uint256 blockNumber_
    ) internal pure maxTier(endTier_) returns (uint256) {
        unchecked {
            uint256 offset_;
            for (uint256 i_ = startTier_; i_ < endTier_; i_++) {
                offset_ = i_ * 32;
                report_ =
                    (report_ &
                        ~uint256(
                            uint256(TierConstants.NEVER_TIER) << offset_
                        )) |
                    uint256(blockNumber_ << offset_);
            }
            return report_;
        }
    }

    /// Updates a report to a new status.
    ///
    /// Internally dispatches to `truncateTiersAbove` and
    /// `updateBlocksForTierRange`.
    /// The dispatch is based on whether the new tier is above or below the
    /// current tier.
    /// The `startTier_` MUST match the result of `tierAtBlockFromReport`.
    /// It is expected the caller will know the current tier when
    /// calling this function and need to do other things in the calling scope
    /// with it.
    ///
    /// @param report_ The report to update.
    /// @param startTier_ The tier to start updating relative to. Data above
    /// this tier WILL BE LOST so probably should be the current tier.
    /// @param endTier_ The new highest tier held, at the given block number.
    /// @param blockNumber_ The block number to update the highest tier to, and
    /// intermediate tiers from `startTier_`.
    /// @return The updated report.
    function updateReportWithTierAtBlock(
        uint256 report_,
        uint256 startTier_,
        uint256 endTier_,
        uint256 blockNumber_
    ) internal pure returns (uint256) {
        return
            endTier_ < startTier_
                ? truncateTiersAbove(report_, endTier_)
                : updateBlocksForTierRange(
                    report_,
                    startTier_,
                    endTier_,
                    blockNumber_
                );
    }
}

// SPDX-License-Identifier: CAL
pragma solidity ^0.8.0;

/// @title ITier
/// @notice `ITier` is a simple interface that contracts can
/// implement to provide membership lists for other contracts.
///
/// There are many use-cases for a time-preserving conditional membership list.
///
/// Some examples include:
///
/// - Self-serve whitelist to participate in fundraising
/// - Lists of users who can claim airdrops and perks
/// - Pooling resources with implied governance/reward tiers
/// - POAP style attendance proofs allowing access to future exclusive events
///
/// @dev Standard interface to a tiered membership.
///
/// A "membership" can represent many things:
/// - Exclusive access.
/// - Participation in some event or process.
/// - KYC completion.
/// - Combination of sub-memberships.
/// - Etc.
///
/// The high level requirements for a contract implementing `ITier`:
/// - MUST represent held tiers as a `uint`.
/// - MUST implement `report`.
///   - The report is a `uint256` that SHOULD represent the block each tier has
///     been continuously held since encoded as `uint32`.
///   - The encoded tiers start at `1`; Tier `0` is implied if no tier has ever
///     been held.
///   - Tier `0` is NOT encoded in the report, it is simply the fallback value.
///   - If a tier is lost the block data is erased for that tier and will be
///     set if/when the tier is regained to the new block.
///   - If a tier is held but the historical block information is not available
///     the report MAY return `0x00000000` for all held tiers.
///   - Tiers that are lost or have never been held MUST return `0xFFFFFFFF`.
/// - SHOULD implement `setTier`.
///   - Contracts SHOULD revert with `SET_TIER` error if they cannot
///     meaningfully set a tier directly.
///     For example a contract that can only derive a membership tier by
///     reading the state of an external contract cannot set tiers.
///   - Contracts implementing `setTier` SHOULD error with `SET_ZERO_TIER`
///     if tier 0 is being set.
/// - MUST emit `TierChange` when `setTier` successfully writes a new tier.
///   - Contracts that cannot meaningfully set a tier are exempt.
///
/// So the four possible states and report values are:
/// - Tier is held and block is known: Block is in the report
/// - Tier is held but block is NOT known: `0` is in the report
/// - Tier is NOT held: `0xFF..` is in the report
/// - Tier is unknown: `0xFF..` is in the report
interface ITier {
    /// Every time a tier changes we log start and end tier against the
    /// account.
    /// This MAY NOT be emitted if reports are being read from the state of an
    /// external contract.
    /// The start tier MAY be lower than the current tier as at the block this
    /// event is emitted in.
    /// @param sender The `msg.sender` that authorized the tier change.
    /// @param account The account changing tier.
    /// @param startTier The previous tier the account held.
    /// @param endTier The newly acquired tier the account now holds.
    /// @param data The associated data for the tier change.
    event TierChange(
        address sender,
        address account,
        uint256 startTier,
        uint256 endTier,
        bytes data
    );

    /// @notice Users can set their own tier by calling `setTier`.
    ///
    /// The contract that implements `ITier` is responsible for checking
    /// eligibility and/or taking actions required to set the tier.
    ///
    /// For example, the contract must take/refund any tokens relevant to
    /// changing the tier.
    ///
    /// Obviously the user is responsible for any approvals for this action
    /// prior to calling `setTier`.
    ///
    /// When the tier is changed a `TierChange` event will be emmited as:
    /// ```
    /// event TierChange(address account, uint startTier, uint endTier);
    /// ```
    ///
    /// The `setTier` function includes arbitrary data as the third
    /// parameter. This can be used to disambiguate in the case that
    /// there may be many possible options for a user to achieve some tier.
    ///
    /// For example, consider the case where tier 3 can be achieved
    /// by EITHER locking 1x rare NFT or 3x uncommon NFTs. A user with both
    /// could use `data` to explicitly state their intent.
    ///
    /// NOTE however that _any_ address can call `setTier` for any other
    /// address.
    ///
    /// If you implement `data` or anything that changes state then be very
    /// careful to avoid griefing attacks.
    ///
    /// The `data` parameter can also be ignored by the contract implementing
    /// `ITier`. For example, ERC20 tokens are fungible so only the balance
    /// approved by the user is relevant to a tier change.
    ///
    /// The `setTier` function SHOULD prevent users from reassigning
    /// tier 0 to themselves.
    ///
    /// The tier 0 status represents never having any status.
    /// @dev Updates the tier of an account.
    ///
    /// The implementing contract is responsible for all checks and state
    /// changes required to set the tier. For example, taking/refunding
    /// funds/NFTs etc.
    ///
    /// Contracts may disallow directly setting tiers, preferring to derive
    /// reports from other onchain data.
    /// In this case they should `revert("SET_TIER");`.
    ///
    /// @param account Account to change the tier for.
    /// @param endTier Tier after the change.
    /// @param data Arbitrary input to disambiguate ownership
    /// (e.g. NFTs to lock).
    function setTier(
        address account,
        uint256 endTier,
        bytes calldata data
    ) external;

    /// @notice A tier report is a `uint256` that contains each of the block
    /// numbers each tier has been held continously since as a `uint32`.
    /// There are 9 possible tier, starting with tier 0 for `0` offset or
    /// "never held any tier" then working up through 8x 4 byte offsets to the
    /// full 256 bits.
    ///
    /// Low bits = Lower tier.
    ///
    /// In hexadecimal every 8 characters = one tier, starting at tier 8
    /// from high bits and working down to tier 1.
    ///
    /// `uint32` should be plenty for any blockchain that measures block times
    /// in seconds, but reconsider if deploying to an environment with
    /// significantly sub-second block times.
    ///
    /// ~135 years of 1 second blocks fit into `uint32`.
    ///
    /// `2^8 / (365 * 24 * 60 * 60)`
    ///
    /// When a user INCREASES their tier they keep all the block numbers they
    /// already had, and get new block times for each increased tiers they have
    /// earned.
    ///
    /// When a user DECREASES their tier they return to `0xFFFFFFFF` (never)
    /// for every tier level they remove, but keep their block numbers for the
    /// remaining tiers.
    ///
    /// GUIs are encouraged to make this dynamic very clear for users as
    /// round-tripping to a lower status and back is a DESTRUCTIVE operation
    /// for block times.
    ///
    /// The intent is that downstream code can provide additional benefits for
    /// members who have maintained a certain tier for/since a long time.
    /// These benefits can be provided by inspecting the report, and by
    /// on-chain contracts directly,
    /// rather than needing to work with snapshots etc.
    /// @dev Returns the earliest block the account has held each tier for
    /// continuously.
    /// This is encoded as a uint256 with blocks represented as 8x
    /// concatenated uint32.
    /// I.e. Each 4 bytes of the uint256 represents a u32 tier start time.
    /// The low bits represent low tiers and high bits the high tiers.
    /// Implementing contracts should return 0xFFFFFFFF for lost and
    /// never-held tiers.
    ///
    /// @param account Account to get the report for.
    /// @return The report blocks encoded as a uint256.
    function report(address account) external view returns (uint256);
}

// SPDX-License-Identifier: CAL
pragma solidity =0.8.10;

/// @title TierConstants
/// @notice Constants for use with tier logic.
library TierConstants {
    /// NEVER is 0xFF.. as it is infinitely in the future.
    /// NEVER for an entire report.
    uint256 internal constant NEVER_REPORT = type(uint256).max;
    /// NEVER for a single tier.
    uint32 internal constant NEVER_TIER = type(uint32).max;

    /// Always is 0 as it is the genesis block.
    /// Tiers can't predate the chain but they can predate an `ITier` contract.
    uint256 internal constant ALWAYS = 0;

    /// Account has never held a tier.
    uint256 internal constant TIER_ZERO = 0;

    /// Magic number for tier one.
    uint256 internal constant TIER_ONE = 1;
    /// Magic number for tier two.
    uint256 internal constant TIER_TWO = 2;
    /// Magic number for tier three.
    uint256 internal constant TIER_THREE = 3;
    /// Magic number for tier four.
    uint256 internal constant TIER_FOUR = 4;
    /// Magic number for tier five.
    uint256 internal constant TIER_FIVE = 5;
    /// Magic number for tier six.
    uint256 internal constant TIER_SIX = 6;
    /// Magic number for tier seven.
    uint256 internal constant TIER_SEVEN = 7;
    /// Magic number for tier eight.
    uint256 internal constant TIER_EIGHT = 8;
    /// Maximum tier is `TIER_EIGHT`.
    uint256 internal constant MAX_TIER = TIER_EIGHT;
}

// SPDX-License-Identifier: CAL
pragma solidity =0.8.10;

import {ITier} from "./ITier.sol";
import "./libraries/TierConstants.sol";

import "../sstore2/SSTORE2.sol";

/// @title ValueTier
///
/// @dev A contract that is `ValueTier` expects to derive tiers from explicit
/// values. For example an address must send or hold an amount of something to
/// reach a given tier.
/// Anything with predefined values that map to tiers can be a `ValueTier`.
///
/// Note that `ValueTier` does NOT implement `ITier`.
/// `ValueTier` does include state however, to track the `tierValues` so is not
/// a library.
contract ValueTier {
    /// TODO: Typescript errors on uint256[8] so can't include tierValues here.
    /// @param sender The `msg.sender` initializing value tier.
    /// @param pointer Pointer to the uint256[8] values.
    event InitializeValueTier(address sender, address pointer);

    /// Pointer to the uint256[8] values.
    address private tierValuesPointer;

    /// Set the `tierValues` on construction to be referenced immutably.
    function initializeValueTier(uint256[8] memory tierValues_) internal {
        // Reinitialization is a bug.
        assert(tierValuesPointer == address(0));
        unchecked {
            uint256 accumulator_ = 0;
            for (uint256 i_ = 0; i_ < 8; i_++) {
                require(
                    tierValues_[i_] >= accumulator_,
                    "OUT_OF_ORDER_TIER_VALUES"
                );
                accumulator_ = tierValues_[i_];
            }
        }
        address tierValuesPointer_ = SSTORE2.write(abi.encode(tierValues_));
        emit InitializeValueTier(msg.sender, tierValuesPointer_);
        tierValuesPointer = tierValuesPointer_;
    }

    /// Complements the default solidity accessor for `tierValues`.
    /// Returns all the values in a list rather than requiring an index be
    /// specified.
    /// @return tierValues_ The immutable `tierValues`.
    function tierValues() public view returns (uint256[8] memory tierValues_) {
        return abi.decode(SSTORE2.read(tierValuesPointer), (uint256[8]));
    }

    /// Converts a Tier to the minimum value it requires.
    /// tier 0 is always value 0 as it is the fallback.
    /// @param tier_ The Tier to convert to a value.
    function tierToValue(uint256[8] memory tierValues_, uint256 tier_)
        internal
        pure
        returns (uint256)
    {
        unchecked {
            return tier_ > TierConstants.TIER_ZERO ? tierValues_[tier_ - 1] : 0;
        }
    }

    /// Converts a value to the maximum Tier it qualifies for.
    /// @param value_ The value to convert to a tier.
    function valueToTier(uint256[8] memory tierValues_, uint256 value_)
        internal
        pure
        returns (uint256)
    {
        for (uint256 i_ = 0; i_ < TierConstants.MAX_TIER; i_++) {
            if (value_ < tierValues_[i_]) {
                return i_;
            }
        }
        return TierConstants.MAX_TIER;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity =0.8.10;

import "./utils/Bytecode.sol";

/**
  @title A key-value storage with auto-generated keys for storing chunks of
  data with a lower write & read cost.
  @author Agustin Aguilar <[email protected]>

  Readme: https://github.com/0xsequence/sstore2#readme
*/
library SSTORE2 {
    error WriteError();

    /**
    @notice Stores `_data` and returns `pointer` as key for later retrieval
    @dev The pointer is a contract address with `_data` as code
    @param _data to be written
    @return pointer Pointer to the written `_data`
  */
    function write(bytes memory _data) internal returns (address pointer) {
        // Append 00 to _data so contract can't be called
        // Build init code
        bytes memory code = Bytecode.creationCodeFor(
            abi.encodePacked(hex"00", _data)
        );

        // Deploy contract using create
        assembly {
            pointer := create(0, add(code, 32), mload(code))
        }

        // Address MUST be non-zero
        if (pointer == address(0)) revert WriteError();
    }

    /**
    @notice Reads the contents of the `_pointer` code as data, skips the first
    byte
    @dev The function is intended for reading pointers generated by `write`
    @param _pointer to be read
    @return data read from `_pointer` contract
  */
    function read(address _pointer) internal view returns (bytes memory) {
        return Bytecode.codeAt(_pointer, 1, type(uint256).max);
    }

    /**
    @notice Reads the contents of the `_pointer` code as data, skips the first
    byte
    @dev The function is intended for reading pointers generated by `write`
    @param _pointer to be read
    @param _start number of bytes to skip
    @return data read from `_pointer` contract
  */
    function read(address _pointer, uint256 _start)
        internal
        view
        returns (bytes memory)
    {
        return Bytecode.codeAt(_pointer, _start + 1, type(uint256).max);
    }

    /**
    @notice Reads the contents of the `_pointer` code as data, skips the first
    byte
    @dev The function is intended for reading pointers generated by `write`
    @param _pointer to be read
    @param _start number of bytes to skip
    @param _end index before which to end extraction
    @return data read from `_pointer` contract
  */
    function read(
        address _pointer,
        uint256 _start,
        uint256 _end
    ) internal view returns (bytes memory) {
        return Bytecode.codeAt(_pointer, _start + 1, _end + 1);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity =0.8.10;

library Bytecode {
    error InvalidCodeAtRange(uint256 _size, uint256 _start, uint256 _end);

    /**
    @notice Generate a creation code that results on a contract with `_code` as
    bytecode
    @param _code The returning value of the resulting `creationCode`
    @return creationCode (constructor) for new contract
  */
    function creationCodeFor(bytes memory _code)
        internal
        pure
        returns (bytes memory)
    {
        /*
      0x00    0x63         0x63XXXXXX  PUSH4 _code.length  size
      0x01    0x80         0x80        DUP1                size size
      0x02    0x60         0x600e      PUSH1 14            14 size size
      0x03    0x60         0x6000      PUSH1 00            0 14 size size
      0x04    0x39         0x39        CODECOPY            size
      0x05    0x60         0x6000      PUSH1 00            0 size
      0x06    0xf3         0xf3        RETURN
      <CODE>
    */

        return
            abi.encodePacked(
                hex"63",
                uint32(_code.length),
                hex"80_60_0E_60_00_39_60_00_F3",
                _code
            );
    }

    /**
    @notice Returns the size of the code on a given address
    @param _addr Address that may or may not contain code
    @return size of the code on the given `_addr`
  */
    function codeSize(address _addr) internal view returns (uint256 size) {
        assembly {
            size := extcodesize(_addr)
        }
    }

    /**
    @notice Returns the code of a given address
    @dev It will fail if `_end < _start`
    @param _addr Address that may or may not contain code
    @param _start number of bytes of code to skip on read
    @param _end index before which to end extraction
    @return oCode read from `_addr` deployed bytecode

    Forked: https://gist.github.com/KardanovIR/fe98661df9338c842b4a30306d507fbd
  */
    function codeAt(
        address _addr,
        uint256 _start,
        uint256 _end
    ) internal view returns (bytes memory oCode) {
        uint256 csize = codeSize(_addr);
        if (csize == 0) return bytes("");

        if (_start > csize) return bytes("");
        if (_end < _start) revert InvalidCodeAtRange(csize, _start, _end);

        unchecked {
            uint256 reqSize = _end - _start;
            uint256 maxSize = csize - _start;

            uint256 size = maxSize < reqSize ? maxSize : reqSize;

            assembly {
                // allocate output byte array - this could also be done without
                // assembly
                // by using o_code = new bytes(size)
                oCode := mload(0x40)
                // new "memory end" including padding
                mstore(
                    0x40,
                    add(oCode, and(add(add(size, 0x20), 0x1f), not(0x1f)))
                )
                // store length in memory
                mstore(oCode, size)
                // actually retrieve the code, this needs assembly
                extcodecopy(_addr, add(oCode, 0x20), _start, size)
            }
        }
    }
}

// SPDX-License-Identifier: CAL
pragma solidity =0.8.10;

import {ITier} from "./ITier.sol";
import "./libraries/TierConstants.sol";
import "./libraries/TierReport.sol";

/// @title ReadWriteTier
/// @notice `ReadWriteTier` is a base contract that other contracts are
/// expected to inherit.
///
/// It handles all the internal accounting and state changes for `report`
/// and `setTier`.
///
/// It calls an `_afterSetTier` hook that inheriting contracts can override to
/// enforce tier requirements.
///
/// @dev ReadWriteTier can `setTier` in addition to generating reports.
/// When `setTier` is called it automatically sets the current blocks in the
/// report for the new tiers. Lost tiers are scrubbed from the report as tiered
/// addresses move down the tiers.
contract ReadWriteTier is ITier {
    /// account => reports
    mapping(address => uint256) private reports;

    /// Either fetch the report from storage or return UNINITIALIZED.
    /// @inheritdoc ITier
    function report(address account_)
        public
        view
        virtual
        override
        returns (uint256)
    {
        // Inequality here to silence slither warnings.
        return
            reports[account_] > 0
                ? reports[account_]
                : TierConstants.NEVER_REPORT;
    }

    /// Errors if the user attempts to return to the ZERO tier.
    /// Updates the report from `report` using default `TierReport` logic.
    /// Calls `_afterSetTier` that inheriting contracts SHOULD
    /// override to enforce status requirements.
    /// Emits `TierChange` event.
    /// @inheritdoc ITier
    function setTier(
        address account_,
        uint256 endTier_,
        bytes calldata data_
    ) external virtual override {
        // The user must move to at least tier 1.
        // The tier 0 status is reserved for users that have never
        // interacted with the contract.
        require(endTier_ > 0, "SET_ZERO_TIER");

        uint256 report_ = report(account_);

        uint256 startTier_ = TierReport.tierAtBlockFromReport(
            report_,
            block.number
        );

        reports[account_] = TierReport.updateReportWithTierAtBlock(
            report_,
            startTier_,
            endTier_,
            block.number
        );

        // Emit this event for ITier.
        emit TierChange(msg.sender, account_, startTier_, endTier_, data_);

        // Call the `_afterSetTier` hook to allow inheriting contracts to
        // enforce requirements.
        // The inheriting contract MUST `require` or otherwise enforce its
        // needs to rollback a bad status change.
        _afterSetTier(account_, startTier_, endTier_, data_);
    }

    /// Inheriting contracts SHOULD override this to enforce requirements.
    ///
    /// All the internal accounting and state changes are complete at
    /// this point.
    /// Use `require` to enforce additional requirements for tier changes.
    ///
    /// @param account_ The account with the new tier.
    /// @param startTier_ The tier the account had before this update.
    /// @param endTier_ The tier the account will have after this update.
    /// @param data_ Additional arbitrary data to inform update requirements.
    function _afterSetTier(
        address account_,
        uint256 startTier_,
        uint256 endTier_,
        bytes calldata data_
    ) internal virtual {} // solhint-disable-line no-empty-blocks
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.0;

import "../../utils/Address.sol";

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To initialize the implementation contract, you can either invoke the
 * initializer manually, or you can include a constructor to automatically mark it as initialized when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() initializer {}
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     */
    bool private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Modifier to protect an initializer function from being invoked twice.
     */
    modifier initializer() {
        // If the contract is initializing we ignore whether _initialized is set in order to support multiple
        // inheritance patterns, but we only do this in the context of a constructor, because in other contexts the
        // contract may have been reentered.
        require(_initializing ? _isConstructor() : !_initialized, "Initializable: contract is already initialized");

        bool isTopLevelCall = !_initializing;
        if (isTopLevelCall) {
            _initializing = true;
            _initialized = true;
        }

        _;

        if (isTopLevelCall) {
            _initializing = false;
        }
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} modifier, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }

    function _isConstructor() private view returns (bool) {
        return !Address.isContract(address(this));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://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);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // 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);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol)

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 `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);

    /**
     * @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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)

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");
        }
    }
}

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

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"uint256","name":"_size","type":"uint256"},{"internalType":"uint256","name":"_start","type":"uint256"},{"internalType":"uint256","name":"_end","type":"uint256"}],"name":"InvalidCodeAtRange","type":"error"},{"inputs":[],"name":"WriteError","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"address","name":"erc20","type":"address"}],"name":"Initialize","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"address","name":"pointer","type":"address"}],"name":"InitializeValueTier","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"address","name":"account","type":"address"},{"indexed":false,"internalType":"uint256","name":"startTier","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"endTier","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"data","type":"bytes"}],"name":"TierChange","type":"event"},{"inputs":[{"components":[{"internalType":"contract IERC20","name":"erc20","type":"address"},{"internalType":"uint256[8]","name":"tierValues","type":"uint256[8]"}],"internalType":"struct ERC20TransferTierConfig","name":"config_","type":"tuple"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account_","type":"address"}],"name":"report","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account_","type":"address"},{"internalType":"uint256","name":"endTier_","type":"uint256"},{"internalType":"bytes","name":"data_","type":"bytes"}],"name":"setTier","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"tierValues","outputs":[{"internalType":"uint256[8]","name":"tierValues_","type":"uint256[8]"}],"stateMutability":"view","type":"function"}]

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