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// SPDX-License-Identifier: BUSL-1.1
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*/
pragma solidity 0.8.23;


import "./UpgradeableProxy.sol";
import "../interfaces/IControllable.sol";
import "../interfaces/IProxyControlled.sol";

/// @title EIP1967 Upgradable proxy implementation.
/// @dev Only Controller has access and should implement time-lock for upgrade action.
/// @author belbix
contract ProxyControlled is UpgradeableProxy, IProxyControlled {

  /// @notice Version of the contract
  /// @dev Should be incremented when contract changed
  string public constant PROXY_CONTROLLED_VERSION = "1.0.0";


  constructor(address _logic) UpgradeableProxy(_logic) {
    //make sure that given logic is controllable
    require(IControllable(_logic).created() >= 0);
  }

  /// @notice Upgrade contract logic
  /// @dev Upgrade allowed only for Controller and should be done only after time-lock period
  /// @param newImplementation_ Implementation address
  function upgrade(address newImplementation_) external override {
    require(IControllable(address(this)).isController(msg.sender), "Proxy: Forbidden");
    IControllable(address(this)).increaseRevision(_implementation());
    _upgradeTo(newImplementation_);
    // the new contract must have the same ABI and you must have the power to change it again
    require(IControllable(address(this)).isController(msg.sender), "Proxy: Wrong implementation");
  }

  /// @notice Return current logic implementation
  function implementation() external override view returns (address) {
    return _implementation();
  }
}

// SPDX-License-Identifier: BUSL-1.1

pragma solidity 0.8.23;

interface IControllable {

  function VERSION() external pure returns (string memory);

  function revision() external view returns (uint);

  function previousImplementation() external view returns (address);

  function isController(address contract_) external view returns (bool);

  function isGovernance(address contract_) external view returns (bool);

  function created() external view returns (uint256);

  function createdBlock() external view returns (uint256);

  function controller() external view returns (address);

  function increaseRevision(address oldLogic) external;

}

// SPDX-License-Identifier: BUSL-1.1

pragma solidity 0.8.23;

interface IProxyControlled {

  function upgrade(address newImplementation_) external;

  function implementation() external view returns (address);

}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
  /**
   * @dev Delegates the current call to `implementation`.
   *
   * This function does not return to its internall call site, it will return directly to the external caller.
   */
  function _delegate(address implementation) internal virtual {
    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 This is a virtual function that should be overriden so it returns the address to which the fallback function
   * and {_fallback} should delegate.
   */
  function _implementation() internal view virtual returns (address);

  /**
   * @dev Delegates the current call to the address returned by `_implementation()`.
   *
   * This function does not return to its internall call site, it will return directly to the external caller.
   */
  function _fallback() internal virtual {
    _beforeFallback();
    _delegate(_implementation());
  }

  /**
   * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
   * function in the contract matches the call data.
   */
  fallback() external payable virtual {
    _fallback();
  }

  /**
   * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
   * is empty.
   */
  receive() external payable virtual {
    _fallback();
  }

  /**
   * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
   * call, or as part of the Solidity `fallback` or `receive` functions.
   *
   * If overriden should call `super._beforeFallback()`.
   */
  function _beforeFallback() internal virtual {}
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.23;

import "../openzeppelin/Proxy.sol";

/// @title OpenZeppelin https://github.com/OpenZeppelin/openzeppelin-contracts/blob/release-v3.4/contracts/proxy/UpgradeableProxy.sol
/// @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
///      implementation address that can be changed. This address is stored in storage in the location specified by
///      https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
///      implementation behind the proxy.
///      Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see
///      {TransparentUpgradeableProxy}.
abstract contract UpgradeableProxy is Proxy {

  /// @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
  ///      If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
  ///      function call, and allows initializating the storage of the proxy like a Solidity constructor.
  constructor(address _logic) payable {
    assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
    _setImplementation(_logic);
  }

  /// @dev Emitted when the implementation is upgraded.
  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 private constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

  /// @dev Returns the current implementation address.
  function _implementation() internal view virtual override returns (address impl) {
    bytes32 slot = _IMPLEMENTATION_SLOT;
    // solhint-disable-next-line no-inline-assembly
    assembly {
      impl := sload(slot)
    }
  }

  /// @dev Upgrades the proxy to a new implementation.
  ///      Emits an {Upgraded} event.
  function _upgradeTo(address newImplementation) internal virtual {
    _setImplementation(newImplementation);
    emit Upgraded(newImplementation);
  }

  /// @dev Stores a new address in the EIP1967 implementation slot.
  function _setImplementation(address newImplementation) private {
    require(newImplementation.code.length != 0, "UpgradeableProxy: new implementation is not a contract");

    bytes32 slot = _IMPLEMENTATION_SLOT;

    // solhint-disable-next-line no-inline-assembly
    assembly {
      sstore(slot, newImplementation)
    }
  }
}

{
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 50
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

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[{"inputs":[{"internalType":"address","name":"_logic","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"PROXY_CONTROLLED_VERSION","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation_","type":"address"}],"name":"upgrade","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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