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

/**
 * @title IAdapter
 * @notice Interface for protocol adapters
 */
interface IAdapter {
    /**
     * @notice Execute a step using this adapter
     * @param data Encoded step parameters
     * @return success Whether execution succeeded
     * @return returnData Return data from execution
     */
    function executeStep(bytes calldata data) external returns (bool success, bytes memory returnData);

    /**
     * @notice Prepare step (2PC prepare phase)
     * @param data Encoded step parameters
     * @return prepared Whether preparation succeeded
     */
    function prepareStep(bytes calldata data) external returns (bool prepared);

    /**
     * @notice Get adapter name
     */
    function name() external view returns (string memory);

    /**
     * @notice Get adapter type (DEFI or FIAT_DTL)
     */
    function adapterType() external view returns (uint8);
}