// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.9;

pragma experimental ABIEncoderV2;

import "../libraries/Types.sol";

interface ISablierAirdrop {
    /**
     * @notice Emits when a stream is successfully created.
     */
    event CreateStream(
        uint256 indexed streamId,
        address indexed recipient,
        uint256 deposit,
        uint256 initialLockedBalance,
        uint256 startTime,
        uint256 stopTime
    );

    /**
     * @notice Emits when full airdrop is successfully created.
     */
    event CreateAirdrop(
        uint256 startTime,
        uint256 stopTime,
        uint256 recipientsAmount,
        uint256 firstStreamId,
        uint256 lastStreamId
    );

    /**
     * @notice Emits when the recipient of a stream withdraws a portion or all their pro rata share of the stream.
     */
    event WithdrawFromStream(uint256 indexed streamId, address indexed recipient, uint256 amount);

    /**
     * @notice Emits when a stream is successfully cancelled and tokens are transferred back on a pro rata basis.
     */
    event CancelStream(uint256 indexed streamId, address indexed recipient, uint256 remainingBalance);

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

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

    function createAirdrop(uint256 startTime, uint256 stopTime, address recipientStorage) external returns (bool);

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

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