using System;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using Steamworks.Data;


namespace Steamworks
{
	internal class ISteamVideo : SteamInterface
	{
		public override string InterfaceName => "STEAMVIDEO_INTERFACE_V002";
		
		public override void InitInternals()
		{
			_GetVideoURL = Marshal.GetDelegateForFunctionPointer<FGetVideoURL>( Marshal.ReadIntPtr( VTable, Platform.MemoryOffset( 0 ) ) );
			_IsBroadcasting = Marshal.GetDelegateForFunctionPointer<FIsBroadcasting>( Marshal.ReadIntPtr( VTable, Platform.MemoryOffset( 8 ) ) );
			_GetOPFSettings = Marshal.GetDelegateForFunctionPointer<FGetOPFSettings>( Marshal.ReadIntPtr( VTable, Platform.MemoryOffset( 16 ) ) );
			_GetOPFStringForApp = Marshal.GetDelegateForFunctionPointer<FGetOPFStringForApp>( Marshal.ReadIntPtr( VTable, Platform.MemoryOffset( 24 ) ) );
		}
		internal override void Shutdown()
		{
			base.Shutdown();
			
			_GetVideoURL = null;
			_IsBroadcasting = null;
			_GetOPFSettings = null;
			_GetOPFStringForApp = null;
		}
		
		#region FunctionMeta
		[UnmanagedFunctionPointer( Platform.MemberConvention )]
		private delegate void FGetVideoURL( IntPtr self, AppId unVideoAppID );
		private FGetVideoURL _GetVideoURL;
		
		#endregion
		internal void GetVideoURL( AppId unVideoAppID )
		{
			_GetVideoURL( Self, unVideoAppID );
		}
		
		#region FunctionMeta
		[UnmanagedFunctionPointer( Platform.MemberConvention )]
		[return: MarshalAs( UnmanagedType.I1 )]
		private delegate bool FIsBroadcasting( IntPtr self, ref int pnNumViewers );
		private FIsBroadcasting _IsBroadcasting;
		
		#endregion
		internal bool IsBroadcasting( ref int pnNumViewers )
		{
			var returnValue = _IsBroadcasting( Self, ref pnNumViewers );
			return returnValue;
		}
		
		#region FunctionMeta
		[UnmanagedFunctionPointer( Platform.MemberConvention )]
		private delegate void FGetOPFSettings( IntPtr self, AppId unVideoAppID );
		private FGetOPFSettings _GetOPFSettings;
		
		#endregion
		internal void GetOPFSettings( AppId unVideoAppID )
		{
			_GetOPFSettings( Self, unVideoAppID );
		}
		
		#region FunctionMeta
		[UnmanagedFunctionPointer( Platform.MemberConvention )]
		[return: MarshalAs( UnmanagedType.I1 )]
		private delegate bool FGetOPFStringForApp( IntPtr self, AppId unVideoAppID, IntPtr pchBuffer, ref int pnBufferSize );
		private FGetOPFStringForApp _GetOPFStringForApp;
		
		#endregion
		internal bool GetOPFStringForApp( AppId unVideoAppID, out string pchBuffer, ref int pnBufferSize )
		{
			IntPtr mempchBuffer = Helpers.TakeMemory();
			var returnValue = _GetOPFStringForApp( Self, unVideoAppID, mempchBuffer, ref pnBufferSize );
			pchBuffer = Helpers.MemoryToString( mempchBuffer );
			return returnValue;
		}
		
	}
}