using System.ServiceModel;

namespace TGS.Interface.Components
{

	/// <summary>
	/// For managing the BYOND installation the server runs
	/// </summary>
	[ServiceContract]
	public interface ITGByond
	{
		/// <summary>
		/// Gets the current status of any BYOND updates
		/// </summary>
		/// <returns>The current status of the byond updater</returns>
		[OperationContract]
		ByondStatus CurrentStatus();

		/// <summary>
		/// updates the used byond version to that of version <paramref name="major"/>.<paramref name="minor"/>. The change won't take place until DD reboots. Calls <see cref="ITGDreamDaemon.RequestRestart"/> if blocked by a running DD instance. Runs asyncronously, use <see cref="CurrentStatus"/> to check progress
		/// </summary>
		/// <param name="major">Major BYOND version. E.g. 511</param>
		/// <param name="minor">Minor BYOND version. E.g. 1381</param>
		/// <returns><see langword="true"/> if the update started, <see langword="false"/> if another operation was in progress or DreamDaemon is running</returns>
		[OperationContract]
		bool UpdateToVersion(int major, int minor);

		/// <summary>
		/// Check the last update error. Checking this will clear the value
		/// </summary>
		/// <returns>The last update error, if any. <see langword="null"/> otherwise.</returns>
		[OperationContract]
		string GetError();

		/// <summary>
		/// Get the currently installed version as a string formatted as Major.Minor
		/// </summary>
		/// <param name="type">The type of version to retrieve</param>
		/// <returns><see langword="null"/> if no version is detected, the version string otherwise</returns>
		[OperationContract]
		string GetVersion(ByondVersion type);
	}
}