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using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using UnityEngine;
namespace Steamworks;
public static class CallbackDispatcher
{
private static Dictionary<int, List<Callback>> m_registeredCallbacks = new Dictionary<int, List<Callback>>();
private static Dictionary<int, List<Callback>> m_registeredGameServerCallbacks = new Dictionary<int, List<Callback>>();
private static Dictionary<ulong, List<CallResult>> m_registeredCallResults = new Dictionary<ulong, List<CallResult>>();
private static object m_sync = new object();
private static IntPtr m_pCallbackMsg;
private static int m_initCount;
public static bool IsInitialized => m_initCount > 0;
public static void ExceptionHandler(Exception e)
{
Debug.LogException(e);
}
internal static void Initialize()
{
lock (m_sync)
{
if (m_initCount == 0)
{
NativeMethods.SteamAPI_ManualDispatch_Init();
m_pCallbackMsg = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(CallbackMsg_t)));
}
m_initCount++;
}
}
internal static void Shutdown()
{
lock (m_sync)
{
m_initCount--;
if (m_initCount == 0)
{
UnregisterAll();
Marshal.FreeHGlobal(m_pCallbackMsg);
m_pCallbackMsg = IntPtr.Zero;
}
}
}
internal static void Register(Callback cb)
{
int callbackIdentity = CallbackIdentities.GetCallbackIdentity(cb.GetCallbackType());
Dictionary<int, List<Callback>> dictionary = (cb.IsGameServer ? m_registeredGameServerCallbacks : m_registeredCallbacks);
lock (m_sync)
{
if (!dictionary.TryGetValue(callbackIdentity, out var value))
{
value = new List<Callback>();
dictionary.Add(callbackIdentity, value);
}
value.Add(cb);
}
}
internal static void Register(SteamAPICall_t asyncCall, CallResult cr)
{
lock (m_sync)
{
if (!m_registeredCallResults.TryGetValue((ulong)asyncCall, out var value))
{
value = new List<CallResult>();
m_registeredCallResults.Add((ulong)asyncCall, value);
}
value.Add(cr);
}
}
internal static void Unregister(Callback cb)
{
int callbackIdentity = CallbackIdentities.GetCallbackIdentity(cb.GetCallbackType());
Dictionary<int, List<Callback>> dictionary = (cb.IsGameServer ? m_registeredGameServerCallbacks : m_registeredCallbacks);
lock (m_sync)
{
if (dictionary.TryGetValue(callbackIdentity, out var value))
{
value.Remove(cb);
if (value.Count == 0)
{
dictionary.Remove(callbackIdentity);
}
}
}
}
internal static void Unregister(SteamAPICall_t asyncCall, CallResult cr)
{
lock (m_sync)
{
if (m_registeredCallResults.TryGetValue((ulong)asyncCall, out var value))
{
value.Remove(cr);
if (value.Count == 0)
{
m_registeredCallResults.Remove((ulong)asyncCall);
}
}
}
}
private static void UnregisterAll()
{
List<Callback> list = new List<Callback>();
List<CallResult> list2 = new List<CallResult>();
lock (m_sync)
{
foreach (KeyValuePair<int, List<Callback>> registeredCallback in m_registeredCallbacks)
{
list.AddRange(registeredCallback.Value);
}
m_registeredCallbacks.Clear();
foreach (KeyValuePair<int, List<Callback>> registeredGameServerCallback in m_registeredGameServerCallbacks)
{
list.AddRange(registeredGameServerCallback.Value);
}
m_registeredGameServerCallbacks.Clear();
foreach (KeyValuePair<ulong, List<CallResult>> registeredCallResult in m_registeredCallResults)
{
list2.AddRange(registeredCallResult.Value);
}
m_registeredCallResults.Clear();
foreach (Callback item in list)
{
item.SetUnregistered();
}
foreach (CallResult item2 in list2)
{
item2.SetUnregistered();
}
}
}
internal static void RunFrame(bool isGameServer)
{
if (!IsInitialized)
{
throw new InvalidOperationException("Callback dispatcher is not initialized.");
}
HSteamPipe hSteamPipe = (HSteamPipe)(isGameServer ? NativeMethods.SteamGameServer_GetHSteamPipe() : NativeMethods.SteamAPI_GetHSteamPipe());
NativeMethods.SteamAPI_ManualDispatch_RunFrame(hSteamPipe);
Dictionary<int, List<Callback>> dictionary = (isGameServer ? m_registeredGameServerCallbacks : m_registeredCallbacks);
while (NativeMethods.SteamAPI_ManualDispatch_GetNextCallback(hSteamPipe, m_pCallbackMsg))
{
CallbackMsg_t callbackMsg_t = (CallbackMsg_t)Marshal.PtrToStructure(m_pCallbackMsg, typeof(CallbackMsg_t));
try
{
if (callbackMsg_t.m_iCallback == 703)
{
SteamAPICallCompleted_t steamAPICallCompleted_t = (SteamAPICallCompleted_t)Marshal.PtrToStructure(callbackMsg_t.m_pubParam, typeof(SteamAPICallCompleted_t));
IntPtr intPtr = Marshal.AllocHGlobal((int)steamAPICallCompleted_t.m_cubParam);
if (NativeMethods.SteamAPI_ManualDispatch_GetAPICallResult(hSteamPipe, steamAPICallCompleted_t.m_hAsyncCall, intPtr, (int)steamAPICallCompleted_t.m_cubParam, steamAPICallCompleted_t.m_iCallback, out var pbFailed))
{
lock (m_sync)
{
if (m_registeredCallResults.TryGetValue((ulong)steamAPICallCompleted_t.m_hAsyncCall, out var value))
{
m_registeredCallResults.Remove((ulong)steamAPICallCompleted_t.m_hAsyncCall);
foreach (CallResult item in value)
{
item.OnRunCallResult(intPtr, pbFailed, (ulong)steamAPICallCompleted_t.m_hAsyncCall);
item.SetUnregistered();
}
}
}
}
Marshal.FreeHGlobal(intPtr);
}
else
{
if (!dictionary.TryGetValue(callbackMsg_t.m_iCallback, out var value2))
{
continue;
}
List<Callback> list;
lock (m_sync)
{
list = new List<Callback>(value2);
}
foreach (Callback item2 in list)
{
item2.OnRunCallback(callbackMsg_t.m_pubParam);
}
continue;
}
}
catch (Exception e)
{
ExceptionHandler(e);
}
finally
{
NativeMethods.SteamAPI_ManualDispatch_FreeLastCallback(hSteamPipe);
}
}
}
}
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