// File: contracts/protocol/configuration/PoolAddressesProvider.sol



// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.10;

import {Ownable} from "../../dependencies/openzeppelin/contracts/Ownable.sol";
import {IPoolAddressesProvider} from "../../interfaces/IPoolAddressesProvider.sol";
import {InitializableImmutableAdminUpgradeabilityProxy} from "../libraries/omni-upgradeability/InitializableImmutableAdminUpgradeabilityProxy.sol";

/**
 * @title PoolAddressesProvider
 *
 * @notice Main registry of addresses part of or connected to the protocol, including permissioned roles
 * @dev Acts as factory of proxies and admin of those, so with right to change its implementations
 * @dev Owned by the Omni Governance
 **/
contract PoolAddressesProvider is Ownable, IPoolAddressesProvider {
    // Identifier of the Omni Market
    string private _marketId;

    // Map of registered addresses (identifier => registeredAddress)
    mapping(bytes32 => address) private _addresses;

    // Main identifiers
    bytes32 private constant POOL = "POOL";
    bytes32 private constant POOL_CONFIGURATOR = "POOL_CONFIGURATOR";
    bytes32 private constant PRICE_ORACLE = "PRICE_ORACLE";
    bytes32 private constant ACL_MANAGER = "ACL_MANAGER";
    bytes32 private constant ACL_ADMIN = "ACL_ADMIN";
    bytes32 private constant PRICE_ORACLE_SENTINEL = "PRICE_ORACLE_SENTINEL";
    bytes32 private constant DATA_PROVIDER = "DATA_PROVIDER";

    /**
     * @dev Constructor.
     * @param marketId The identifier of the market.
     * @param owner The owner address of this contract.
     */
    constructor(string memory marketId, address owner) {
        _setMarketId(marketId);
        transferOwnership(owner);
    }

    /// @inheritdoc IPoolAddressesProvider
    function getMarketId() external view override returns (string memory) {
        return _marketId;
    }

    /// @inheritdoc IPoolAddressesProvider
    function setMarketId(string memory newMarketId)
        external
        override
        onlyOwner
    {
        _setMarketId(newMarketId);
    }

    /// @inheritdoc IPoolAddressesProvider
    function getAddress(bytes32 id) public view override returns (address) {
        return _addresses[id];
    }

    /// @inheritdoc IPoolAddressesProvider
    function setAddress(bytes32 id, address newAddress)
        external
        override
        onlyOwner
    {
        address oldAddress = _addresses[id];
        _addresses[id] = newAddress;
        emit AddressSet(id, oldAddress, newAddress);
    }

    /// @inheritdoc IPoolAddressesProvider
    function setAddressAsProxy(bytes32 id, address newImplementationAddress)
        external
        override
        onlyOwner
    {
        address proxyAddress = _addresses[id];
        address oldImplementationAddress = _getProxyImplementation(id);
        _updateImpl(id, newImplementationAddress);
        emit AddressSetAsProxy(
            id,
            proxyAddress,
            oldImplementationAddress,
            newImplementationAddress
        );
    }

    /// @inheritdoc IPoolAddressesProvider
    function getPool() external view override returns (address) {
        return getAddress(POOL);
    }

    /// @inheritdoc IPoolAddressesProvider
    function setPoolImpl(address newPoolImpl) external override onlyOwner {
        address oldPoolImpl = _getProxyImplementation(POOL);
        _updateImpl(POOL, newPoolImpl);
        emit PoolUpdated(oldPoolImpl, newPoolImpl);
    }

    /// @inheritdoc IPoolAddressesProvider
    function getPoolConfigurator() external view override returns (address) {
        return getAddress(POOL_CONFIGURATOR);
    }

    /// @inheritdoc IPoolAddressesProvider
    function setPoolConfiguratorImpl(address newPoolConfiguratorImpl)
        external
        override
        onlyOwner
    {
        address oldPoolConfiguratorImpl = _getProxyImplementation(
            POOL_CONFIGURATOR
        );
        _updateImpl(POOL_CONFIGURATOR, newPoolConfiguratorImpl);
        emit PoolConfiguratorUpdated(
            oldPoolConfiguratorImpl,
            newPoolConfiguratorImpl
        );
    }

    /// @inheritdoc IPoolAddressesProvider
    function getPriceOracle() external view override returns (address) {
        return getAddress(PRICE_ORACLE);
    }

    /// @inheritdoc IPoolAddressesProvider
    function setPriceOracle(address newPriceOracle)
        external
        override
        onlyOwner
    {
        address oldPriceOracle = _addresses[PRICE_ORACLE];
        _addresses[PRICE_ORACLE] = newPriceOracle;
        emit PriceOracleUpdated(oldPriceOracle, newPriceOracle);
    }

    /// @inheritdoc IPoolAddressesProvider
    function getACLManager() external view override returns (address) {
        return getAddress(ACL_MANAGER);
    }

    /// @inheritdoc IPoolAddressesProvider
    function setACLManager(address newAclManager) external override onlyOwner {
        address oldAclManager = _addresses[ACL_MANAGER];
        _addresses[ACL_MANAGER] = newAclManager;
        emit ACLManagerUpdated(oldAclManager, newAclManager);
    }

    /// @inheritdoc IPoolAddressesProvider
    function getACLAdmin() external view override returns (address) {
        return getAddress(ACL_ADMIN);
    }

    /// @inheritdoc IPoolAddressesProvider
    function setACLAdmin(address newAclAdmin) external override onlyOwner {
        address oldAclAdmin = _addresses[ACL_ADMIN];
        _addresses[ACL_ADMIN] = newAclAdmin;
        emit ACLAdminUpdated(oldAclAdmin, newAclAdmin);
    }

    /// @inheritdoc IPoolAddressesProvider
    function getPriceOracleSentinel() external view override returns (address) {
        return getAddress(PRICE_ORACLE_SENTINEL);
    }

    /// @inheritdoc IPoolAddressesProvider
    function setPriceOracleSentinel(address newPriceOracleSentinel)
        external
        override
        onlyOwner
    {
        address oldPriceOracleSentinel = _addresses[PRICE_ORACLE_SENTINEL];
        _addresses[PRICE_ORACLE_SENTINEL] = newPriceOracleSentinel;
        emit PriceOracleSentinelUpdated(
            oldPriceOracleSentinel,
            newPriceOracleSentinel
        );
    }

    /// @inheritdoc IPoolAddressesProvider
    function getPoolDataProvider() external view override returns (address) {
        return getAddress(DATA_PROVIDER);
    }

    /// @inheritdoc IPoolAddressesProvider
    function setPoolDataProvider(address newDataProvider)
        external
        override
        onlyOwner
    {
        address oldDataProvider = _addresses[DATA_PROVIDER];
        _addresses[DATA_PROVIDER] = newDataProvider;
        emit PoolDataProviderUpdated(oldDataProvider, newDataProvider);
    }

    /**
     * @notice Internal function to update the implementation of a specific proxied component of the protocol.
     * @dev If there is no proxy registered with the given identifier, it creates the proxy setting `newAddress`
     *   as implementation and calls the initialize() function on the proxy
     * @dev If there is already a proxy registered, it just updates the implementation to `newAddress` and
     *   calls the initialize() function via upgradeToAndCall() in the proxy
     * @param id The id of the proxy to be updated
     * @param newAddress The address of the new implementation
     **/
    function _updateImpl(bytes32 id, address newAddress) internal {
        address proxyAddress = _addresses[id];
        InitializableImmutableAdminUpgradeabilityProxy proxy;
        bytes memory params = abi.encodeWithSignature(
            "initialize(address)",
            address(this)
        );

        if (proxyAddress == address(0)) {
            proxy = new InitializableImmutableAdminUpgradeabilityProxy(
                address(this)
            );
            _addresses[id] = proxyAddress = address(proxy);
            proxy.initialize(newAddress, params);
            emit ProxyCreated(id, proxyAddress, newAddress);
        } else {
            proxy = InitializableImmutableAdminUpgradeabilityProxy(
                payable(proxyAddress)
            );
            proxy.upgradeToAndCall(newAddress, params);
        }
    }

    /**
     * @notice Updates the identifier of the Omni market.
     * @param newMarketId The new id of the market
     **/
    function _setMarketId(string memory newMarketId) internal {
        string memory oldMarketId = _marketId;
        _marketId = newMarketId;
        emit MarketIdSet(oldMarketId, newMarketId);
    }

    /**
     * @notice Returns the the implementation contract of the proxy contract by its identifier.
     * @dev It returns ZERO if there is no registered address with the given id
     * @dev It reverts if the registered address with the given id is not `InitializableImmutableAdminUpgradeabilityProxy`
     * @param id The id
     * @return The address of the implementation contract
     */
    function _getProxyImplementation(bytes32 id) internal returns (address) {
        address proxyAddress = _addresses[id];
        if (proxyAddress == address(0)) {
            return address(0);
        } else {
            address payable payableProxyAddress = payable(proxyAddress);
            return
                InitializableImmutableAdminUpgradeabilityProxy(
                    payableProxyAddress
                ).implementation();
        }
    }
}

// File: contracts/dependencies/openzeppelin/contracts/Ownable.sol



// SPDX-License-Identifier: MIT

pragma solidity 0.8.10;

import './Context.sol';

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
contract Ownable is Context {
  address private _owner;

  event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

  /**
   * @dev Initializes the contract setting the deployer as the initial owner.
   */
  constructor() {
    address msgSender = _msgSender();
    _owner = msgSender;
    emit OwnershipTransferred(address(0), msgSender);
  }

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

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

  /**
   * @dev Leaves the contract without owner. It will not be possible to call
   * `onlyOwner` functions anymore. Can only be called by the current owner.
   *
   * NOTE: Renouncing ownership will leave the contract without an owner,
   * thereby removing any functionality that is only available to the owner.
   */
  function renounceOwnership() public virtual onlyOwner {
    emit OwnershipTransferred(_owner, address(0));
    _owner = address(0);
  }

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

// File: contracts/interfaces/IPoolAddressesProvider.sol



// SPDX-License-Identifier: AGPL-3.0
pragma solidity 0.8.10;

/**
 * @title IPoolAddressesProvider
 *
 * @notice Defines the basic interface for a Pool Addresses Provider.
 **/
interface IPoolAddressesProvider {
    /**
     * @dev Emitted when the market identifier is updated.
     * @param oldMarketId The old id of the market
     * @param newMarketId The new id of the market
     */
    event MarketIdSet(string indexed oldMarketId, string indexed newMarketId);

    /**
     * @dev Emitted when the pool is updated.
     * @param oldAddress The old address of the Pool
     * @param newAddress The new address of the Pool
     */
    event PoolUpdated(address indexed oldAddress, address indexed newAddress);

    /**
     * @dev Emitted when the pool configurator is updated.
     * @param oldAddress The old address of the PoolConfigurator
     * @param newAddress The new address of the PoolConfigurator
     */
    event PoolConfiguratorUpdated(
        address indexed oldAddress,
        address indexed newAddress
    );

    /**
     * @dev Emitted when the price oracle is updated.
     * @param oldAddress The old address of the PriceOracle
     * @param newAddress The new address of the PriceOracle
     */
    event PriceOracleUpdated(
        address indexed oldAddress,
        address indexed newAddress
    );

    /**
     * @dev Emitted when the ACL manager is updated.
     * @param oldAddress The old address of the ACLManager
     * @param newAddress The new address of the ACLManager
     */
    event ACLManagerUpdated(
        address indexed oldAddress,
        address indexed newAddress
    );

    /**
     * @dev Emitted when the ACL admin is updated.
     * @param oldAddress The old address of the ACLAdmin
     * @param newAddress The new address of the ACLAdmin
     */
    event ACLAdminUpdated(
        address indexed oldAddress,
        address indexed newAddress
    );

    /**
     * @dev Emitted when the price oracle sentinel is updated.
     * @param oldAddress The old address of the PriceOracleSentinel
     * @param newAddress The new address of the PriceOracleSentinel
     */
    event PriceOracleSentinelUpdated(
        address indexed oldAddress,
        address indexed newAddress
    );

    /**
     * @dev Emitted when the pool data provider is updated.
     * @param oldAddress The old address of the PoolDataProvider
     * @param newAddress The new address of the PoolDataProvider
     */
    event PoolDataProviderUpdated(
        address indexed oldAddress,
        address indexed newAddress
    );

    /**
     * @dev Emitted when a new proxy is created.
     * @param id The identifier of the proxy
     * @param proxyAddress The address of the created proxy contract
     * @param implementationAddress The address of the implementation contract
     */
    event ProxyCreated(
        bytes32 indexed id,
        address indexed proxyAddress,
        address indexed implementationAddress
    );

    /**
     * @dev Emitted when a new non-proxied contract address is registered.
     * @param id The identifier of the contract
     * @param oldAddress The address of the old contract
     * @param newAddress The address of the new contract
     */
    event AddressSet(
        bytes32 indexed id,
        address indexed oldAddress,
        address indexed newAddress
    );

    /**
     * @dev Emitted when the implementation of the proxy registered with id is updated
     * @param id The identifier of the contract
     * @param proxyAddress The address of the proxy contract
     * @param oldImplementationAddress The address of the old implementation contract
     * @param newImplementationAddress The address of the new implementation contract
     */
    event AddressSetAsProxy(
        bytes32 indexed id,
        address indexed proxyAddress,
        address oldImplementationAddress,
        address indexed newImplementationAddress
    );

    /**
     * @notice Returns the id of the Omni market to which this contract points to.
     * @return The market id
     **/
    function getMarketId() external view returns (string memory);

    /**
     * @notice Associates an id with a specific PoolAddressesProvider.
     * @dev This can be used to create an onchain registry of PoolAddressesProviders to
     * identify and validate multiple Omni markets.
     * @param newMarketId The market id
     */
    function setMarketId(string calldata newMarketId) external;

    /**
     * @notice Returns an address by its identifier.
     * @dev The returned address might be an EOA or a contract, potentially proxied
     * @dev It returns ZERO if there is no registered address with the given id
     * @param id The id
     * @return The address of the registered for the specified id
     */
    function getAddress(bytes32 id) external view returns (address);

    /**
     * @notice General function to update the implementation of a proxy registered with
     * certain `id`. If there is no proxy registered, it will instantiate one and
     * set as implementation the `newImplementationAddress`.
     * @dev IMPORTANT Use this function carefully, only for ids that don't have an explicit
     * setter function, in order to avoid unexpected consequences
     * @param id The id
     * @param newImplementationAddress The address of the new implementation
     */
    function setAddressAsProxy(bytes32 id, address newImplementationAddress)
        external;

    /**
     * @notice Sets an address for an id replacing the address saved in the addresses map.
     * @dev IMPORTANT Use this function carefully, as it will do a hard replacement
     * @param id The id
     * @param newAddress The address to set
     */
    function setAddress(bytes32 id, address newAddress) external;

    /**
     * @notice Returns the address of the Pool proxy.
     * @return The Pool proxy address
     **/
    function getPool() external view returns (address);

    /**
     * @notice Updates the implementation of the Pool, or creates a proxy
     * setting the new `pool` implementation when the function is called for the first time.
     * @param newPoolImpl The new Pool implementation
     **/
    function setPoolImpl(address newPoolImpl) external;

    /**
     * @notice Returns the address of the PoolConfigurator proxy.
     * @return The PoolConfigurator proxy address
     **/
    function getPoolConfigurator() external view returns (address);

    /**
     * @notice Updates the implementation of the PoolConfigurator, or creates a proxy
     * setting the new `PoolConfigurator` implementation when the function is called for the first time.
     * @param newPoolConfiguratorImpl The new PoolConfigurator implementation
     **/
    function setPoolConfiguratorImpl(address newPoolConfiguratorImpl) external;

    /**
     * @notice Returns the address of the price oracle.
     * @return The address of the PriceOracle
     */
    function getPriceOracle() external view returns (address);

    /**
     * @notice Updates the address of the price oracle.
     * @param newPriceOracle The address of the new PriceOracle
     */
    function setPriceOracle(address newPriceOracle) external;

    /**
     * @notice Returns the address of the ACL manager.
     * @return The address of the ACLManager
     */
    function getACLManager() external view returns (address);

    /**
     * @notice Updates the address of the ACL manager.
     * @param newAclManager The address of the new ACLManager
     **/
    function setACLManager(address newAclManager) external;

    /**
     * @notice Returns the address of the ACL admin.
     * @return The address of the ACL admin
     */
    function getACLAdmin() external view returns (address);

    /**
     * @notice Updates the address of the ACL admin.
     * @param newAclAdmin The address of the new ACL admin
     */
    function setACLAdmin(address newAclAdmin) external;

    /**
     * @notice Returns the address of the price oracle sentinel.
     * @return The address of the PriceOracleSentinel
     */
    function getPriceOracleSentinel() external view returns (address);

    /**
     * @notice Updates the address of the price oracle sentinel.
     * @param newPriceOracleSentinel The address of the new PriceOracleSentinel
     **/
    function setPriceOracleSentinel(address newPriceOracleSentinel) external;

    /**
     * @notice Returns the address of the data provider.
     * @return The address of the DataProvider
     */
    function getPoolDataProvider() external view returns (address);

    /**
     * @notice Updates the address of the data provider.
     * @param newDataProvider The address of the new DataProvider
     **/
    function setPoolDataProvider(address newDataProvider) external;
}

// File: contracts/protocol/libraries/omni-upgradeability/InitializableImmutableAdminUpgradeabilityProxy.sol



// SPDX-License-Identifier: AGPL-3.0
pragma solidity 0.8.10;

import {InitializableUpgradeabilityProxy} from "../../../dependencies/openzeppelin/upgradeability/InitializableUpgradeabilityProxy.sol";
import {Proxy} from "../../../dependencies/openzeppelin/upgradeability/Proxy.sol";
import {BaseImmutableAdminUpgradeabilityProxy} from "./BaseImmutableAdminUpgradeabilityProxy.sol";

/**
 * @title InitializableAdminUpgradeabilityProxy
 *
 * @dev Extends BaseAdminUpgradeabilityProxy with an initializer function
 */
contract InitializableImmutableAdminUpgradeabilityProxy is
    BaseImmutableAdminUpgradeabilityProxy,
    InitializableUpgradeabilityProxy
{
    /**
     * @dev Constructor.
     * @param admin The address of the admin
     */
    constructor(address admin) BaseImmutableAdminUpgradeabilityProxy(admin) {
        // Intentionally left blank
    }

    /// @inheritdoc BaseImmutableAdminUpgradeabilityProxy
    function _willFallback()
        internal
        override(BaseImmutableAdminUpgradeabilityProxy, Proxy)
    {
        BaseImmutableAdminUpgradeabilityProxy._willFallback();
    }
}

// File: contracts/dependencies/openzeppelin/contracts/Context.sol



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

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with GSN meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
  function _msgSender() internal view virtual returns (address payable) {
    return payable(msg.sender);
  }

  function _msgData() internal view virtual returns (bytes memory) {
    this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
    return msg.data;
  }
}

// File: contracts/dependencies/openzeppelin/upgradeability/InitializableUpgradeabilityProxy.sol



// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.8.10;

import './BaseUpgradeabilityProxy.sol';

/**
 * @title InitializableUpgradeabilityProxy
 * @dev Extends BaseUpgradeabilityProxy with an initializer for initializing
 * implementation and init data.
 */
contract InitializableUpgradeabilityProxy is BaseUpgradeabilityProxy {
  /**
   * @dev Contract initializer.
   * @param _logic Address of the initial implementation.
   * @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
   * It should include the signature and the parameters of the function to be called, as described in
   * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
   * This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
   */
  function initialize(address _logic, bytes memory _data) public payable {
    require(_implementation() == address(0));
    assert(IMPLEMENTATION_SLOT == bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1));
    _setImplementation(_logic);
    if (_data.length > 0) {
      (bool success, ) = _logic.delegatecall(_data);
      require(success);
    }
  }
}

// File: contracts/dependencies/openzeppelin/upgradeability/Proxy.sol



// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.8.10;

/**
 * @title Proxy
 * @dev Implements delegation of calls to other contracts, with proper
 * forwarding of return values and bubbling of failures.
 * It defines a fallback function that delegates all calls to the address
 * returned by the abstract _implementation() internal function.
 */
abstract contract Proxy {
  /**
   * @dev Fallback function.
   * Will run if no other function in the contract matches the call data.
   * Implemented entirely in `_fallback`.
   */
  fallback() external payable {
    _fallback();
  }

  /**
   * @return The Address of the implementation.
   */
  function _implementation() internal view virtual returns (address);

  /**
   * @dev Delegates execution to an implementation contract.
   * This is a low level function that doesn't return to its internal call site.
   * It will return to the external caller whatever the implementation returns.
   * @param implementation Address to delegate.
   */
  function _delegate(address implementation) internal {
    //solium-disable-next-line
    assembly {
      // Copy msg.data. We take full control of memory in this inline assembly
      // block because it will not return to Solidity code. We overwrite the
      // Solidity scratch pad at memory position 0.
      calldatacopy(0, 0, calldatasize())

      // Call the implementation.
      // out and outsize are 0 because we don't know the size yet.
      let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

      // Copy the returned data.
      returndatacopy(0, 0, returndatasize())

      switch result
      // delegatecall returns 0 on error.
      case 0 {
        revert(0, returndatasize())
      }
      default {
        return(0, returndatasize())
      }
    }
  }

  /**
   * @dev Function that is run as the first thing in the fallback function.
   * Can be redefined in derived contracts to add functionality.
   * Redefinitions must call super._willFallback().
   */
  function _willFallback() internal virtual {}

  /**
   * @dev fallback implementation.
   * Extracted to enable manual triggering.
   */
  function _fallback() internal {
    _willFallback();
    _delegate(_implementation());
  }
}

// File: contracts/protocol/libraries/omni-upgradeability/BaseImmutableAdminUpgradeabilityProxy.sol



// SPDX-License-Identifier: AGPL-3.0
pragma solidity 0.8.10;

import {BaseUpgradeabilityProxy} from "../../../dependencies/openzeppelin/upgradeability/BaseUpgradeabilityProxy.sol";

/**
 * @title BaseImmutableAdminUpgradeabilityProxy
 * , inspired by the OpenZeppelin upgradeability proxy pattern
 * @notice This contract combines an upgradeability proxy with an authorization
 * mechanism for administrative tasks.
 * @dev The admin role is stored in an immutable, which helps saving transactions costs
 * All external functions in this contract must be guarded by the
 * `ifAdmin` modifier. See ethereum/solidity#3864 for a Solidity
 * feature proposal that would enable this to be done automatically.
 */
contract BaseImmutableAdminUpgradeabilityProxy is BaseUpgradeabilityProxy {
    address internal immutable _admin;

    /**
     * @dev Constructor.
     * @param admin The address of the admin
     */
    constructor(address admin) {
        _admin = admin;
    }

    modifier ifAdmin() {
        if (msg.sender == _admin) {
            _;
        } else {
            _fallback();
        }
    }

    /**
     * @notice Return the admin address
     * @return The address of the proxy admin.
     */
    function admin() external ifAdmin returns (address) {
        return _admin;
    }

    /**
     * @notice Return the implementation address
     * @return The address of the implementation.
     */
    function implementation() external ifAdmin returns (address) {
        return _implementation();
    }

    /**
     * @notice Upgrade the backing implementation of the proxy.
     * @dev Only the admin can call this function.
     * @param newImplementation The address of the new implementation.
     */
    function upgradeTo(address newImplementation) external ifAdmin {
        _upgradeTo(newImplementation);
    }

    /**
     * @notice Upgrade the backing implementation of the proxy and call a function
     * on the new implementation.
     * @dev This is useful to initialize the proxied contract.
     * @param newImplementation The address of the new implementation.
     * @param data Data to send as msg.data in the low level call.
     * It should include the signature and the parameters of the function to be called, as described in
     * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
     */
    function upgradeToAndCall(address newImplementation, bytes calldata data)
        external
        payable
        ifAdmin
    {
        _upgradeTo(newImplementation);
        (bool success, ) = newImplementation.delegatecall(data);
        require(success);
    }

    /**
     * @notice Only fall back when the sender is not the admin.
     */
    function _willFallback() internal virtual override {
        require(
            msg.sender != _admin,
            "Cannot call fallback function from the proxy admin"
        );
        super._willFallback();
    }
}

// File: contracts/dependencies/openzeppelin/upgradeability/BaseUpgradeabilityProxy.sol



// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.8.10;

import './Proxy.sol';
import '../contracts/Address.sol';

/**
 * @title BaseUpgradeabilityProxy
 * @dev This contract implements a proxy that allows to change the
 * implementation address to which it will delegate.
 * Such a change is called an implementation upgrade.
 */
contract BaseUpgradeabilityProxy is Proxy {
  /**
   * @dev Emitted when the implementation is upgraded.
   * @param implementation Address of the new implementation.
   */
  event Upgraded(address indexed implementation);

  /**
   * @dev Storage slot with the address of the current implementation.
   * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
   * validated in the constructor.
   */
  bytes32 internal constant IMPLEMENTATION_SLOT =
    0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

  /**
   * @dev Returns the current implementation.
   * @return impl Address of the current implementation
   */
  function _implementation() internal view override returns (address impl) {
    bytes32 slot = IMPLEMENTATION_SLOT;
    //solium-disable-next-line
    assembly {
      impl := sload(slot)
    }
  }

  /**
   * @dev Upgrades the proxy to a new implementation.
   * @param newImplementation Address of the new implementation.
   */
  function _upgradeTo(address newImplementation) internal {
    _setImplementation(newImplementation);
    emit Upgraded(newImplementation);
  }

  /**
   * @dev Sets the implementation address of the proxy.
   * @param newImplementation Address of the new implementation.
   */
  function _setImplementation(address newImplementation) internal {
    require(
      Address.isContract(newImplementation),
      'Cannot set a proxy implementation to a non-contract address'
    );

    bytes32 slot = IMPLEMENTATION_SLOT;

    //solium-disable-next-line
    assembly {
      sstore(slot, newImplementation)
    }
  }
}

// File: contracts/dependencies/openzeppelin/contracts/Address.sol



// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.8.10;

/**
 * @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) {
        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            codehash := extcodehash(account)
        }
        return (codehash != accountHash && codehash != 0x0);
    }

    /**
     * @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"
        );

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{value: amount}("");
        require(
            success,
            "Address: unable to send value, recipient may have reverted"
        );
    }

    /**
     * @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-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 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);
            }
        }
    }
}