#include "kernel/filesystem/filesystem.hpp"

#include "kapi/devices/device.hpp"
#include "kapi/system.hpp"

#include "kernel/filesystem/ext2/filesystem.hpp"
#include "kernel/filesystem/inode.hpp"

#include <kstd/memory>

#include <array>

namespace kernel::filesystem
{
  namespace
  {
    constexpr auto static filesystem_factories = std::array{
      []() { return kstd::make_shared<ext2::filesystem>(); },
    };
  }  // namespace

  auto filesystem::probe_and_mount(kstd::shared_ptr<kapi::devices::device> const & device)
      -> kstd::shared_ptr<filesystem>
  {
    if (!device)
    {
      kapi::system::panic("[FILESYSTEM] cannot mount filesystem: device is null.");
    }

    for (auto & factory : filesystem_factories)
    {
      auto fs = factory();
      if (fs->mount(device) == 0)
      {
        return fs;
      }
    }

    kapi::system::panic("[FILESYSTEM] cannot mount filesystem: no suitable filesystem found on device.");
  }

  auto filesystem::mount(kstd::shared_ptr<kapi::devices::device> const & device) -> int
  {
    m_device = device;
    return 0;
  }

  auto filesystem::root_inode() const -> kstd::shared_ptr<inode> const &
  {
    return m_root_inode;
  }
}  // namespace kernel::filesystem