1 files changed, 124 insertions, 0 deletions
diff --git a/src/core/hle/service/acc/profile_manager.h b/src/core/hle/service/acc/profile_manager.h
new file mode 100644
index 000000000..314bccbf9
--- /dev/null
+++ b/src/core/hle/service/acc/profile_manager.h
@@ -0,0 +1,124 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <random>
+#include "boost/optional.hpp"
+#include "common/common_types.h"
+#include "common/swap.h"
+#include "core/hle/result.h"
+
+namespace Service::Account {
+constexpr size_t MAX_USERS = 8;
+constexpr size_t MAX_DATA = 128;
+static const u128 INVALID_UUID = {0, 0};
+
+struct UUID {
+    // UUIDs which are 0 are considered invalid!
+    u128 uuid = INVALID_UUID;
+    UUID() = default;
+    explicit UUID(const u128& id) : uuid{id} {}
+    explicit UUID(const u64 lo, const u64 hi) {
+        uuid[0] = lo;
+        uuid[1] = hi;
+    };
+    explicit operator bool() const {
+        return uuid[0] != INVALID_UUID[0] || uuid[1] != INVALID_UUID[1];
+    }
+
+    bool operator==(const UUID& rhs) const {
+        return std::tie(uuid[0], uuid[1]) == std::tie(rhs.uuid[0], rhs.uuid[1]);
+    }
+
+    bool operator!=(const UUID& rhs) const {
+        return !operator==(rhs);
+    }
+
+    // TODO(ogniK): Properly generate uuids based on RFC-4122
+    const UUID& Generate() {
+        std::random_device device;
+        std::mt19937 gen(device());
+        std::uniform_int_distribution<uint64_t> distribution(1,
+                                                             std::numeric_limits<uint64_t>::max());
+        uuid[0] = distribution(gen);
+        uuid[1] = distribution(gen);
+        return *this;
+    }
+
+    // Set the UUID to {0,0} to be considered an invalid user
+    void Invalidate() {
+        uuid = INVALID_UUID;
+    }
+    std::string Format() const {
+        return fmt::format("0x{:016X}{:016X}", uuid[1], uuid[0]);
+    }
+};
+static_assert(sizeof(UUID) == 16, "UUID is an invalid size!");
+
+/// This holds general information about a users profile. This is where we store all the information
+/// based on a specific user
+struct ProfileInfo {
+    UUID user_uuid;
+    std::array<u8, 0x20> username;
+    u64 creation_time;
+    std::array<u8, MAX_DATA> data; // TODO(ognik): Work out what this is
+    bool is_open;
+};
+
+struct ProfileBase {
+    UUID user_uuid;
+    u64_le timestamp;
+    std::array<u8, 0x20> username;
+
+    // Zero out all the fields to make the profile slot considered "Empty"
+    void Invalidate() {
+        user_uuid.Invalidate();
+        timestamp = 0;
+        username.fill(0);
+    }
+};
+static_assert(sizeof(ProfileBase) == 0x38, "ProfileBase is an invalid size");
+
+/// The profile manager is used for handling multiple user profiles at once. It keeps track of open
+/// users, all the accounts registered on the "system" as well as fetching individual "ProfileInfo"
+/// objects
+class ProfileManager {
+public:
+    ProfileManager(); // TODO(ogniK): Load from system save
+    ResultCode AddUser(ProfileInfo user);
+    ResultCode CreateNewUser(UUID uuid, std::array<u8, 0x20>& username);
+    ResultCode CreateNewUser(UUID uuid, const std::string& username);
+    boost::optional<size_t> GetUserIndex(const UUID& uuid) const;
+    boost::optional<size_t> GetUserIndex(ProfileInfo user) const;
+    bool GetProfileBase(boost::optional<size_t> index, ProfileBase& profile) const;
+    bool GetProfileBase(UUID uuid, ProfileBase& profile) const;
+    bool GetProfileBase(ProfileInfo user, ProfileBase& profile) const;
+    bool GetProfileBaseAndData(boost::optional<size_t> index, ProfileBase& profile,
+                               std::array<u8, MAX_DATA>& data) const;
+    bool GetProfileBaseAndData(UUID uuid, ProfileBase& profile,
+                               std::array<u8, MAX_DATA>& data) const;
+    bool GetProfileBaseAndData(ProfileInfo user, ProfileBase& profile,
+                               std::array<u8, MAX_DATA>& data) const;
+    size_t GetUserCount() const;
+    size_t GetOpenUserCount() const;
+    bool UserExists(UUID uuid) const;
+    void OpenUser(UUID uuid);
+    void CloseUser(UUID uuid);
+    std::array<UUID, MAX_USERS> GetOpenUsers() const;
+    std::array<UUID, MAX_USERS> GetAllUsers() const;
+    UUID GetLastOpenedUser() const;
+
+    bool CanSystemRegisterUser() const;
+
+private:
+    std::array<ProfileInfo, MAX_USERS> profiles{};
+    size_t user_count = 0;
+    boost::optional<size_t> AddToProfiles(const ProfileInfo& profile);
+    bool RemoveProfileAtIndex(size_t index);
+    UUID last_opened_user{0, 0};
+};
+
+}; // namespace Service::Account