refactoring

Co-authored-by: n.fedorov <mail@nfedorov.dev>
Co-committed-by: n.fedorov <mail@nfedorov.dev>

include/nxst/infra/fs/directory.hpp

@@ -0,0 +1,32 @@
+// Copyright (C) 2024-2026 NXST contributors
+#pragma once
+#include <string>
+#include <vector>
+
+#include <switch.h>
+
+class Directory {
+  public:
+    explicit Directory(const std::string& path);
+
+    bool good() const {
+        return m_good;
+    }
+    Result error() const {
+        return m_error;
+    }
+    size_t size() const {
+        return m_entries.size();
+    }
+    std::string entry(size_t i) const;
+    bool folder(size_t i) const;
+
+  private:
+    struct Entry {
+        std::string name;
+        bool is_dir;
+    };
+    std::vector<Entry> m_entries;
+    Result m_error{0};
+    bool m_good{false};
+};

include/nxst/infra/fs/filesystem.hpp

@@ -0,0 +1,9 @@
+// Copyright (C) 2024-2026 NXST contributors
+#pragma once
+#include <switch.h>
+
+namespace file_system {
+    Result mount(FsFileSystem* fs, u64 title_id, AccountUid uid);
+    int mount(FsFileSystem fs);
+    void unmount();
+}  // namespace file_system

include/nxst/infra/fs/handles.hpp

@@ -0,0 +1,71 @@
+#pragma once
+#include <cstdio>
+
+#include <switch.h>
+
+namespace nxst {
+
+    // RAII wrapper for FsFileSystem — auto-closes on destruction.
+    struct FsFileSystemHandle {
+        FsFileSystem fs{};
+        bool valid{false};
+
+        FsFileSystemHandle() = default;
+        ~FsFileSystemHandle() {
+            if (valid)
+                fsFsClose(&fs);
+        }  // NOLINT(modernize-use-equals-default)
+
+        FsFileSystemHandle(const FsFileSystemHandle&) = delete;
+        FsFileSystemHandle& operator=(const FsFileSystemHandle&) = delete;
+
+        FsFileSystem* get() {
+            return &fs;
+        }
+
+        void release() {
+            valid = false;
+        }  // transfer ownership to devfs
+    };
+
+    // RAII wrapper for FILE* — auto-fclose on destruction.
+    struct FileHandle {
+        FILE* ptr{nullptr};
+
+        explicit FileHandle(FILE* file) : ptr(file) {}
+        ~FileHandle() {
+            if (ptr != nullptr)
+                fclose(ptr);
+        }  // NOLINT(modernize-use-equals-default)
+
+        FileHandle(const FileHandle&) = delete;
+        FileHandle& operator=(const FileHandle&) = delete;
+
+        explicit operator bool() const {
+            return ptr != nullptr;
+        }
+        FILE* get() const {
+            return ptr;
+        }
+    };
+
+    // RAII wrapper for AccountProfile — auto-closes on destruction.
+    struct AccountProfileHandle {
+        AccountProfile profile{};
+        bool valid{false};
+
+        AccountProfileHandle() = default;
+        ~AccountProfileHandle() {
+            if (valid)
+                accountProfileClose(&profile);
+        }  // NOLINT(modernize-use-equals-default)
+
+        AccountProfileHandle(const AccountProfileHandle&) = delete;
+        AccountProfileHandle& operator=(const AccountProfileHandle&) = delete;
+
+        AccountProfile* get() {
+            return &profile;
+        }
+    };
+
+}  // namespace nxst

include/nxst/infra/fs/io.hpp

@@ -0,0 +1,19 @@
+// Copyright (C) 2024-2026 NXST contributors
+#pragma once
+#include <string>
+
+#include <switch.h>
+
+#include <nxst/domain/result.hpp>
+
+namespace io {
+    nxst::Result<std::string> backup(size_t index, AccountUid uid);
+    nxst::Result<std::string> restore(size_t index, AccountUid uid, const std::string& title_name);
+
+    Result copyDirectory(const std::string& src, const std::string& dst);
+    void copyFile(const std::string& src, const std::string& dst);
+    Result createDirectory(const std::string& path);
+    Result deleteFolderRecursively(const std::string& path);
+    bool directoryExists(const std::string& path);
+    bool fileExists(const std::string& path);
+}  // namespace io