// SPDX-License-Identifier: UNLICENSED

pragma solidity ^0.8.0;

/**
 * @title SOMA SomaEarn Factory Contract.
 * @author SOMA.finance.
 * @notice A factory that produces SomaEarn contracts.
 */
interface ISomaEarnFactory {
    /**
     * @notice Emitted when a SomaEarn is created.
     * @param id The ID of the SomaEarn.
     * @param asset The delegation asset of the SomaEarn.
     * @param instance The address of the created SomaEarn.
     */
    event SomaEarnCreated(uint256 id, address asset, address instance);

    /**
     * @notice The SomaEarn's CREATE_ROLE.
     * @dev Returns keccak256('SomaEarn.CREATE_ROLE').
     */
    function CREATE_ROLE() external pure returns (bytes32);

    /**
     * @notice Creates a SomaEarn instance.
     * @param asset The address of the delegation asset.
     * @param withdrawTo The address that delegated assets will be withdrawn to.
     * @param startDate The start date configuration of the SomaEarn.
     * @param endDate The end date configuration of the SomaEarn.
     * @custom:emits SomaEarnCreated
     * @custom:requirement `asset` must not be equal to address zero.
     * @custom:requirement `withdrawTo` must not be equal to address zero.
     * @custom:requirement The function caller must have the CREATE_ROLE.
     */
    function create(address asset, address withdrawTo, uint48 startDate, uint48 endDate) external;
}