#include "kernel/filesystem/inode.hpp"

#include "kernel/filesystem/rootfs/inode.hpp"

#include <kstd/memory>
#include <kstd/string>

#include <algorithm>
#include <cstddef>
#include <string_view>
#include <utility>

namespace kernel::filesystem::rootfs
{
  inode::inode()
      : kernel::filesystem::inode(inode_kind::directory)
  {}

  auto inode::read(void * /*buffer*/, size_t /*offset*/, size_t /*size*/) const -> size_t
  {
    return 0;
  }

  auto inode::write(void const * /*buffer*/, size_t /*offset*/, size_t /*size*/) -> size_t
  {
    return 0;
  }

  auto inode::add_child(std::string_view name) -> void
  {
    m_children.push_back(std::make_pair(kstd::string{name}, kstd::make_shared<inode>()));
  }

  auto inode::lookup_child(std::string_view name) -> kstd::shared_ptr<inode>
  {
    auto it = std::ranges::find_if(m_children, [&](auto const & pair) { return pair.first == name; });
    return (it != m_children.end()) ? it->second : nullptr;
  }
}  // namespace kernel::filesystem::rootfs