// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

interface IComboHandler {
    enum StepType {
        BORROW,
        SWAP,
        REPAY,
        PAY,
        DEPOSIT,
        WITHDRAW,
        BRIDGE
    }

    enum ExecutionStatus {
        PENDING,
        IN_PROGRESS,
        COMPLETE,
        FAILED,
        ABORTED
    }

    struct Step {
        StepType stepType;
        bytes data; // Encoded step-specific parameters
        address target; // Target contract address (adapter or protocol)
        uint256 value; // ETH value to send (if applicable)
    }

    struct StepReceipt {
        uint256 stepIndex;
        bool success;
        bytes returnData;
        uint256 gasUsed;
    }

    function executeCombo(
        bytes32 planId,
        Step[] calldata steps,
        bytes calldata signature
    ) external returns (bool success, StepReceipt[] memory receipts);

    function prepare(
        bytes32 planId,
        Step[] calldata steps
    ) external returns (bool prepared);

    function commit(bytes32 planId) external returns (bool committed);

    function abort(bytes32 planId) external;

    function getExecutionStatus(bytes32 planId) external view returns (ExecutionStatus status);
}