From bcc3c3172da63faa8173a25f9e65eb14dff8a260 Mon Sep 17 00:00:00 2001
From: Gliniak <Gliniak93@gmail.com>
Date: Thu, 26 Dec 2024 11:31:37 +0100
Subject: [PATCH] [Base] Added NtSystemClock to_local for quick time conversion
 to current timezone

- Changed achievement reward time to local time (in UI)
---
 src/xenia/base/chrono.h        | 8 ++++++++
 src/xenia/kernel/xam/xam_ui.cc | 4 ++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/xenia/base/chrono.h b/src/xenia/base/chrono.h
index b1c252ac3..74e890575 100644
--- a/src/xenia/base/chrono.h
+++ b/src/xenia/base/chrono.h
@@ -91,6 +91,14 @@ struct NtSystemClock {
     return sys_time{cdp.time_since_epoch()};
   }
 
+  template <Domain domain_fresh_ = domain_>
+  static constexpr std::enable_if_t<
+      domain_fresh_ == Domain::Host,
+      std::chrono::local_time<std::chrono::system_clock::duration>>
+  to_local(const time_point& tp) {
+    return std::chrono::current_zone()->to_local(to_sys(tp));
+  }
+
   template <Domain domain_fresh_ = domain_>
   static constexpr std::enable_if_t<domain_fresh_ == Domain::Host, time_point>
   from_sys(const std::chrono::system_clock::time_point& tp) {
diff --git a/src/xenia/kernel/xam/xam_ui.cc b/src/xenia/kernel/xam/xam_ui.cc
index 6b38b5039..7d2803e88 100644
--- a/src/xenia/kernel/xam/xam_ui.cc
+++ b/src/xenia/kernel/xam/xam_ui.cc
@@ -394,7 +394,7 @@ struct AchievementInfo {
   uint32_t gamerscore;
   uint32_t image_id;
   uint32_t flags;
-  std::chrono::system_clock::time_point unlock_time;
+  std::chrono::local_time<std::chrono::system_clock::duration> unlock_time;
 
   bool IsUnlocked() const {
     return (flags & static_cast<uint32_t>(AchievementFlags::kAchieved)) ||
@@ -462,7 +462,7 @@ class GameAchievementsDialog final : public XamDialog {
 
       if (entry.IsUnlocked()) {
         info.unlock_time =
-            chrono::WinSystemClock::to_sys(entry.unlock_time.to_time_point());
+            chrono::WinSystemClock::to_local(entry.unlock_time.to_time_point());
       }
 
       achievements_info_.insert({info.id, info});