added discord game sdk

src/discord-game-sdk-cpp/user_manager.cpp

@@ -0,0 +1,80 @@
+#if !defined(_CRT_SECURE_NO_WARNINGS)
+#define _CRT_SECURE_NO_WARNINGS
+#endif
+
+#include "user_manager.h"
+
+#include "core.h"
+
+#include <cstring>
+#include <memory>
+
+namespace discord {
+
+class UserEvents final {
+public:
+    static void DISCORD_CALLBACK OnCurrentUserUpdate(void* callbackData)
+    {
+        auto* core = reinterpret_cast<Core*>(callbackData);
+        if (!core) {
+            return;
+        }
+
+        auto& module = core->UserManager();
+        module.OnCurrentUserUpdate();
+    }
+};
+
+IDiscordUserEvents UserManager::events_{
+  &UserEvents::OnCurrentUserUpdate,
+};
+
+Result UserManager::GetCurrentUser(User* currentUser)
+{
+    if (!currentUser) {
+        return Result::InternalError;
+    }
+
+    auto result =
+      internal_->get_current_user(internal_, reinterpret_cast<DiscordUser*>(currentUser));
+    return static_cast<Result>(result);
+}
+
+void UserManager::GetUser(UserId userId, std::function<void(Result, User const&)> callback)
+{
+    static auto wrapper = [](void* callbackData, EDiscordResult result, DiscordUser* user) -> void {
+        std::unique_ptr<std::function<void(Result, User const&)>> cb(
+          reinterpret_cast<std::function<void(Result, User const&)>*>(callbackData));
+        if (!cb || !(*cb)) {
+            return;
+        }
+        (*cb)(static_cast<Result>(result), *reinterpret_cast<User const*>(user));
+    };
+    std::unique_ptr<std::function<void(Result, User const&)>> cb{};
+    cb.reset(new std::function<void(Result, User const&)>(std::move(callback)));
+    internal_->get_user(internal_, userId, cb.release(), wrapper);
+}
+
+Result UserManager::GetCurrentUserPremiumType(PremiumType* premiumType)
+{
+    if (!premiumType) {
+        return Result::InternalError;
+    }
+
+    auto result = internal_->get_current_user_premium_type(
+      internal_, reinterpret_cast<EDiscordPremiumType*>(premiumType));
+    return static_cast<Result>(result);
+}
+
+Result UserManager::CurrentUserHasFlag(UserFlag flag, bool* hasFlag)
+{
+    if (!hasFlag) {
+        return Result::InternalError;
+    }
+
+    auto result = internal_->current_user_has_flag(
+      internal_, static_cast<EDiscordUserFlag>(flag), reinterpret_cast<bool*>(hasFlag));
+    return static_cast<Result>(result);
+}
+
+} // namespace discord