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

import {Ownable} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/Ownable.sol';
import {IStreamable} from './interfaces/IStreamable.sol';
import {IAdminControlledEcosystemReserve} from './interfaces/IAdminControlledEcosystemReserve.sol';
import {IAaveEcosystemReserveController} from './interfaces/IAaveEcosystemReserveController.sol';
import {IERC20} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/IERC20.sol';

contract AaveEcosystemReserveController is Ownable, IAaveEcosystemReserveController {
  /**
   * @notice Constructor.
   * @param aaveGovShortTimelock The address of the Aave's governance executor, owning this contract
   */
  constructor(address aaveGovShortTimelock) {
    transferOwnership(aaveGovShortTimelock);
  }

  /// @inheritdoc IAaveEcosystemReserveController
  function approve(
    address collector,
    IERC20 token,
    address recipient,
    uint256 amount
  ) external onlyOwner {
    IAdminControlledEcosystemReserve(collector).approve(token, recipient, amount);
  }

  /// @inheritdoc IAaveEcosystemReserveController
  function transfer(
    address collector,
    IERC20 token,
    address recipient,
    uint256 amount
  ) external onlyOwner {
    IAdminControlledEcosystemReserve(collector).transfer(token, recipient, amount);
  }

  /// @inheritdoc IAaveEcosystemReserveController
  function createStream(
    address collector,
    address recipient,
    uint256 deposit,
    IERC20 tokenAddress,
    uint256 startTime,
    uint256 stopTime
  ) external onlyOwner returns (uint256) {
    return
      IStreamable(collector).createStream(
        recipient,
        deposit,
        address(tokenAddress),
        startTime,
        stopTime
      );
  }

  /// @inheritdoc IAaveEcosystemReserveController
  function withdrawFromStream(
    address collector,
    uint256 streamId,
    uint256 funds
  ) external onlyOwner returns (bool) {
    return IStreamable(collector).withdrawFromStream(streamId, funds);
  }

  /// @inheritdoc IAaveEcosystemReserveController
  function cancelStream(address collector, uint256 streamId) external onlyOwner returns (bool) {
    return IStreamable(collector).cancelStream(streamId);
  }
}

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

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with 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;
  }
}

// SPDX-License-Identifier: AGPL-3.0
pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
  /**
   * @dev Returns the amount of tokens in existence.
   */
  function totalSupply() external view returns (uint256);

  /**
   * @dev Returns the amount of tokens owned by `account`.
   */
  function balanceOf(address account) external view returns (uint256);

  /**
   * @dev Moves `amount` tokens from the caller's account to `recipient`.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * Emits a {Transfer} event.
   */
  function transfer(address recipient, uint256 amount) external returns (bool);

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

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

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

  /**
   * @dev Emitted when `value` tokens are moved from one account (`from`) to
   * another (`to`).
   *
   * Note that `value` may be zero.
   */
  event Transfer(address indexed from, address indexed to, uint256 value);

  /**
   * @dev Emitted when the allowance of a `spender` for an `owner` is set by
   * a call to {approve}. `value` is the new allowance.
   */
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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;
  }
}

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

import {IERC20} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/IERC20.sol';

interface IAaveEcosystemReserveController {
  /**
   * @notice Proxy function for ERC20's approve(), pointing to a specific collector contract
   * @param collector The collector contract with funds (Aave ecosystem reserve)
   * @param token The asset address
   * @param recipient Allowance's recipient
   * @param amount Allowance to approve
   **/
  function approve(address collector, IERC20 token, address recipient, uint256 amount) external;

  /**
   * @notice Proxy function for ERC20's transfer(), pointing to a specific collector contract
   * @param collector The collector contract with funds (Aave ecosystem reserve)
   * @param token The asset address
   * @param recipient Transfer's recipient
   * @param amount Amount to transfer
   **/
  function transfer(address collector, IERC20 token, address recipient, uint256 amount) external;

  /**
   * @notice Proxy function to create a stream of token on a specific collector contract
   * @param collector The collector contract with funds (Aave ecosystem reserve)
   * @param recipient The recipient of the stream of token
   * @param deposit Total amount to be streamed
   * @param tokenAddress The ERC20 token to use as streaming asset
   * @param startTime The unix timestamp for when the stream starts
   * @param stopTime The unix timestamp for when the stream stops
   * @return uint256 The stream id created
   **/
  function createStream(
    address collector,
    address recipient,
    uint256 deposit,
    IERC20 tokenAddress,
    uint256 startTime,
    uint256 stopTime
  ) external returns (uint256);

  /**
   * @notice Proxy function to withdraw from a stream of token on a specific collector contract
   * @param collector The collector contract with funds (Aave ecosystem reserve)
   * @param streamId The id of the stream to withdraw tokens from
   * @param funds Amount to withdraw
   * @return bool If the withdrawal finished properly
   **/
  function withdrawFromStream(
    address collector,
    uint256 streamId,
    uint256 funds
  ) external returns (bool);

  /**
   * @notice Proxy function to cancel a stream of token on a specific collector contract
   * @param collector The collector contract with funds (Aave ecosystem reserve)
   * @param streamId The id of the stream to cancel
   * @return bool If the cancellation happened correctly
   **/
  function cancelStream(address collector, uint256 streamId) external returns (bool);
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.10;

import {IERC20} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/IERC20.sol';

interface IAdminControlledEcosystemReserve {
  /** @notice Emitted when the funds admin changes
   * @param fundsAdmin The new funds admin
   **/
  event NewFundsAdmin(address indexed fundsAdmin);

  /** @notice Returns the mock ETH reference address
   * @return address The address
   **/
  function ETH_MOCK_ADDRESS() external pure returns (address);

  /**
   * @notice Return the funds admin, only entity to be able to interact with this contract (controller of reserve)
   * @return address The address of the funds admin
   **/
  function getFundsAdmin() external view returns (address);

  /**
   * @dev Function for the funds admin to give ERC20 allowance to other parties
   * @param token The address of the token to give allowance from
   * @param recipient Allowance's recipient
   * @param amount Allowance to approve
   **/
  function approve(IERC20 token, address recipient, uint256 amount) external;

  /**
   * @notice Function for the funds admin to transfer ERC20 tokens to other parties
   * @param token The address of the token to transfer
   * @param recipient Transfer's recipient
   * @param amount Amount to transfer
   **/
  function transfer(IERC20 token, address recipient, uint256 amount) external;
}

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

interface IStreamable {
  struct Stream {
    uint256 deposit;
    uint256 ratePerSecond;
    uint256 remainingBalance;
    uint256 startTime;
    uint256 stopTime;
    address recipient;
    address sender;
    address tokenAddress;
    bool isEntity;
  }

  event CreateStream(
    uint256 indexed streamId,
    address indexed sender,
    address indexed recipient,
    uint256 deposit,
    address tokenAddress,
    uint256 startTime,
    uint256 stopTime
  );

  event WithdrawFromStream(uint256 indexed streamId, address indexed recipient, uint256 amount);

  event CancelStream(
    uint256 indexed streamId,
    address indexed sender,
    address indexed recipient,
    uint256 senderBalance,
    uint256 recipientBalance
  );

  function balanceOf(uint256 streamId, address who) external view returns (uint256 balance);

  function getStream(
    uint256 streamId
  )
    external
    view
    returns (
      address sender,
      address recipient,
      uint256 deposit,
      address token,
      uint256 startTime,
      uint256 stopTime,
      uint256 remainingBalance,
      uint256 ratePerSecond
    );

  function createStream(
    address recipient,
    uint256 deposit,
    address tokenAddress,
    uint256 startTime,
    uint256 stopTime
  ) external returns (uint256 streamId);

  function withdrawFromStream(uint256 streamId, uint256 funds) external returns (bool);

  function cancelStream(uint256 streamId) external returns (bool);

  function initialize(address fundsAdmin) external;
}

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

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