Added Leaderboard info map to AchievementManager

The leaderboard map created here contains information useful to displaying leaderboard stats in the Achievement dialog, including each leaderboard's name and description and a partial list of entries for display. The entire map is exposed to the UI in a single call for simplicity.

Source/Core/Core/AchievementManager.cpp

@@ -712,6 +712,12 @@ AchievementManager::GetAchievementProgress(AchievementId achievement_id, u32* va
   return ResponseType::SUCCESS;
 }
 
+const std::unordered_map<AchievementId, AchievementManager::LeaderboardStatus>&
+AchievementManager::GetLeaderboardsInfo() const
+{
+  return m_leaderboard_map;
+}
+
 AchievementManager::RichPresence AchievementManager::GetRichPresence()
 {
   std::lock_guard lg{m_lock};
@@ -732,6 +738,7 @@ void AchievementManager::CloseGame()
       m_game_id = 0;
       m_game_badge.name = "";
       m_unlock_map.clear();
+      m_leaderboard_map.clear();
       rc_api_destroy_fetch_game_data_response(&m_game_data);
       std::memset(&m_game_data, 0, sizeof(m_game_data));
       m_queue.Cancel();

Source/Core/Core/AchievementManager.h

@@ -54,6 +54,7 @@ public:
   using AchievementId = u32;
   static constexpr size_t FORMAT_SIZE = 24;
   using FormattedValue = std::array<char, FORMAT_SIZE>;
+  using LeaderboardRank = u32;
   static constexpr size_t RP_SIZE = 256;
   using RichPresence = std::array<char, RP_SIZE>;
   using Badge = std::vector<u8>;
@@ -83,6 +84,21 @@ public:
   static constexpr std::string_view GOLD = "#FFD700";
   static constexpr std::string_view BLUE = "#0B71C1";
 
+  struct LeaderboardEntry
+  {
+    std::string username;
+    FormattedValue score;
+    LeaderboardRank rank;
+  };
+
+  struct LeaderboardStatus
+  {
+    std::string name;
+    std::string description;
+    u32 player_index = 0;
+    std::unordered_map<u32, LeaderboardEntry> entries;
+  };
+
   static AchievementManager* GetInstance();
   void Init();
   void SetUpdateCallback(UpdateCallback callback);
@@ -113,6 +129,7 @@ public:
   const UnlockStatus& GetUnlockStatus(AchievementId achievement_id) const;
   AchievementManager::ResponseType GetAchievementProgress(AchievementId achievement_id, u32* value,
                                                           u32* target);
+  const std::unordered_map<AchievementId, LeaderboardStatus>& GetLeaderboardsInfo() const;
   RichPresence GetRichPresence();
 
   void CloseGame();
@@ -165,6 +182,7 @@ private:
   time_t m_last_ping_time = 0;
 
   std::unordered_map<AchievementId, UnlockStatus> m_unlock_map;
+  std::unordered_map<AchievementId, LeaderboardStatus> m_leaderboard_map;
 
   Common::WorkQueueThread<std::function<void()>> m_queue;
   Common::WorkQueueThread<std::function<void()>> m_image_queue;