From dd10fa64a8b09abfa1309c062a2d0a7cd2c9a74b Mon Sep 17 00:00:00 2001
From: Michael Carlson <corfe83@gmail.com>
Date: Sat, 28 Oct 2023 11:33:42 -0700
Subject: [PATCH] Add SetRichPresence API on windows

---
 steamworks.go         |  6 ++++--
 steamworks_windows.go | 17 +++++++++++++++++
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/steamworks.go b/steamworks.go
index e1ff861..1730e16 100644
--- a/steamworks.go
+++ b/steamworks.go
@@ -82,6 +82,7 @@ type ISteamUtils interface {
 
 type ISteamFriends interface {
 	GetPersonaName() string
+	SetRichPresence(string, string)
 }
 
 const (
@@ -94,8 +95,9 @@ const (
 	flatAPI_ISteamApps_GetAppInstallDir       = "SteamAPI_ISteamApps_GetAppInstallDir"
 	flatAPI_ISteamApps_GetCurrentGameLanguage = "SteamAPI_ISteamApps_GetCurrentGameLanguage"
 
-	flagAPI_SteamFriends                 = "SteamAPI_SteamFriends_v017"
-	flatAPI_ISteamFriends_GetPersonaName = "SteamAPI_ISteamFriends_GetPersonaName"
+	flagAPI_SteamFriends                  = "SteamAPI_SteamFriends_v017"
+	flatAPI_ISteamFriends_GetPersonaName  = "SteamAPI_ISteamFriends_GetPersonaName"
+	flatAPI_ISteamFriends_SetRichPresence = "SteamAPI_ISteamFriends_SetRichPresence"
 
 	flatAPI_SteamInput                          = "SteamAPI_SteamInput_v006"
 	flatAPI_ISteamInput_GetConnectedControllers = "SteamAPI_ISteamInput_GetConnectedControllers"
diff --git a/steamworks_windows.go b/steamworks_windows.go
index cd6c522..836b0d4 100644
--- a/steamworks_windows.go
+++ b/steamworks_windows.go
@@ -3,6 +3,9 @@
 
 package steamworks
 
+// #include <stdlib.h>
+import "C"
+
 import (
 	"runtime"
 	"unsafe"
@@ -142,6 +145,20 @@ func (s steamFriends) GetPersonaName() string {
 	return cStringToGoString(v, 64)
 }
 
+func (s steamFriends) SetRichPresence(key, value string) {
+	keyString := C.CString(key)
+	valueString := C.CString(value)
+	defer func() {
+		C.free(unsafe.Pointer(keyString))
+		C.free(unsafe.Pointer(valueString))
+	}()
+
+	_, err := theDLL.call(flatAPI_ISteamFriends_SetRichPresence, uintptr(s), uintptr(unsafe.Pointer(keyString)), uintptr(unsafe.Pointer(valueString)))
+	if err != nil {
+		panic(err)
+	}
+}
+
 func SteamInput() ISteamInput {
 	v, err := theDLL.call(flatAPI_SteamInput)
 	if err != nil {