kleros/kleros-v2

// SPDX-License-Identifier: MIT

pragma solidity 0.8.24;

/// @dev The token controller contract must implement these functions. See https://github.com/Giveth/minime/blob/master/contracts/TokenController.sol
interface ITokenController {
    /// @notice Called when `_owner` sends ether to the MiniMe Token contract
    /// @param _owner The address that sent the ether to create tokens
    /// @return True if the ether is accepted, false if it throws
    function proxyPayment(address _owner) external payable returns (bool);

    /// @notice Notifies the controller about a token transfer allowing the controller to react if desired
    /// @param _from The origin of the transfer
    /// @param _to The destination of the transfer
    /// @param _amount The amount of the transfer
    /// @return False if the controller does not authorize the transfer
    function onTransfer(address _from, address _to, uint256 _amount) external returns (bool);

    /// @notice Notifies the controller about an approval allowing the controller to react if desired
    /// @param _owner The address that calls `approve()`
    /// @param _spender The spender in the `approve()` call
    /// @param _amount The amount in the `approve()` call
    /// @return False if the controller does not authorize the approval
    function onApprove(address _owner, address _spender, uint256 _amount) external returns (bool);
}