1 files changed, 66 insertions, 0 deletions
diff --git a/src/core/hle/service/mii/mii_database.h b/src/core/hle/service/mii/mii_database.h
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+++ b/src/core/hle/service/mii/mii_database.h
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+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "core/hle/result.h"
+#include "core/hle/service/mii/types/store_data.h"
+
+namespace Service::Mii {
+
+constexpr std::size_t MaxDatabaseLength{100};
+constexpr u32 MiiMagic{0xa523b78f};
+constexpr u32 DatabaseMagic{0x4244464e}; // NFDB
+
+class NintendoFigurineDatabase {
+public:
+    /// Returns the total mii count.
+    u8 GetDatabaseLength() const;
+
+    /// Returns full if database is full.
+    bool IsFull() const;
+
+    /// Returns the mii of the specified index.
+    StoreData Get(std::size_t index) const;
+
+    ///  Returns the total mii count. Ignoring special mii.
+    u32 GetCount(const DatabaseSessionMetadata& metadata) const;
+
+    /// Returns the index of a mii. If the mii isn't found returns false.
+    bool GetIndexByCreatorId(u32& out_index, const Common::UUID& create_id) const;
+
+    /// Moves the location of a specific mii.
+    Result Move(u32 current_index, u32 new_index);
+
+    /// Replaces mii with new data.
+    void Replace(u32 index, const StoreData& store_data);
+
+    /// Adds a new mii to the end of the database.
+    void Add(const StoreData& store_data);
+
+    /// Removes mii from database and shifts left the remainding data.
+    void Delete(u32 index);
+
+    /// Deletes all contents with a fresh database
+    void CleanDatabase();
+
+    /// Intentionally sets a bad checksum
+    void CorruptCrc();
+
+    /// Returns success if database is valid otherwise returns the corresponding error code.
+    Result CheckIntegrity();
+
+private:
+    /// Returns the checksum of the database
+    u16 GenerateDatabaseCrc();
+
+    u32 magic{}; // 'NFDB'
+    std::array<StoreData, MaxDatabaseLength> miis{};
+    u8 version{};
+    u8 database_length{};
+    u16 crc{};
+};
+static_assert(sizeof(NintendoFigurineDatabase) == 0x1A98,
+              "NintendoFigurineDatabase has incorrect size.");
+
+}; // namespace Service::Mii