using ZB.MOM.WW.ScadaBridge.Commons.Types.Enums;

namespace ZB.MOM.WW.ScadaBridge.Communication.Grpc;

/// <summary>
/// Maps <see cref="AlarmShelveState"/> to/from the wire string carried in the
/// <c>AlarmStateUpdate.shelve_state</c> proto field. The wire form is the enum
/// member name; an empty or unrecognized string parses back to
/// <see cref="AlarmShelveState.Unshelved"/> (the safe default).
/// </summary>
public static class AlarmShelveStateCodec
{
    /// <summary>Returns the wire string for a shelve state (the enum member name).</summary>
    /// <param name="state">The shelve state to encode as a wire string.</param>
    /// <returns>The enum member name as a string (e.g., "Unshelved", "OneShotShelved").</returns>
    public static string ToWire(AlarmShelveState state) => state.ToString();

    /// <summary>Parses a wire string back to a shelve state; defaults to <see cref="AlarmShelveState.Unshelved"/>.</summary>
    /// <param name="wire">The wire string to parse; empty or unrecognized values return <see cref="AlarmShelveState.Unshelved"/>.</param>
    /// <returns>The matching <see cref="AlarmShelveState"/>, or <see cref="AlarmShelveState.Unshelved"/> for unrecognized input.</returns>
    public static AlarmShelveState Parse(string? wire) =>
        Enum.TryParse<AlarmShelveState>(wire, ignoreCase: true, out var state)
            ? state
            : AlarmShelveState.Unshelved;
}
