// SPDX-License-Identifier: MIT
pragma solidity >=0.7.6 <0.9;

/**
 * FtsoInflationConfigurations interface.
 */
interface IFtsoInflationConfigurations {
    /// The FTSO configuration struct.
    struct FtsoConfiguration {
        // concatenated feed ids - i.e. category + base/quote symbol - multiple of 21 (one feedId is bytes21)
        bytes feedIds;
        // inflation share for this configuration group
        uint24 inflationShare;
        // minimal reward eligibility turnout threshold in BIPS (basis points)
        uint16 minRewardedTurnoutBIPS;
        // primary band reward share in PPM (parts per million)
        uint24 primaryBandRewardSharePPM;
        // secondary band width in PPM (parts per million) in relation to the median - multiple of 3 (uint24)
        bytes secondaryBandWidthPPMs;
        // rewards split mode (0 means equally, 1 means random,...)
        uint16 mode;
    }

    /**
     * Returns the FTSO configuration at `_index`.
     * @param _index The index of the FTSO configuration.
     */
    function getFtsoConfiguration(
        uint256 _index
    ) external view returns (FtsoConfiguration memory);

    /**
     * Returns the FTSO configurations.
     */
    function getFtsoConfigurations()
        external
        view
        returns (FtsoConfiguration[] memory);
}