#pragma once

#include "HostFileSystem.h"

#include "GpCoreDefs.h"

#include <jni.h>

class GpFileSystem_Android final : public PortabilityLayer::HostFileSystem
{
public:
	GpFileSystem_Android();
	~GpFileSystem_Android();

	void InitJNI();
	void ShutdownJNI();

	bool FileExists(PortabilityLayer::VirtualDirectory_t virtualDirectory, const char *path) override;
	bool FileLocked(PortabilityLayer::VirtualDirectory_t virtualDirectory, const char *path, bool *exists) override;
	GpIOStream *OpenFileNested(PortabilityLayer::VirtualDirectory_t virtualDirectory, char const* const* subPaths, size_t numSubPaths, bool writeAccess, GpFileCreationDisposition_t createDisposition) override;
	bool DeleteFile(PortabilityLayer::VirtualDirectory_t virtualDirectory, const char *path, bool &existed) override;
	PortabilityLayer::HostDirectoryCursor *ScanDirectoryNested(PortabilityLayer::VirtualDirectory_t virtualDirectory, char const* const* paths, size_t numPaths) override;

	bool ValidateFilePath(const char *path, size_t pathLen) const override;
	bool ValidateFilePathUnicodeChar(uint32_t ch) const override;

	bool IsVirtualDirectoryLooseResources(PortabilityLayer::VirtualDirectory_t virtualDir) const override;

	static GpFileSystem_Android *GetInstance();

private:
	PortabilityLayer::HostDirectoryCursor *ScanAssetDirectory(PortabilityLayer::VirtualDirectory_t virtualDirectory, char const* const* paths, size_t numPaths);
	PortabilityLayer::HostDirectoryCursor *ScanStorageDirectory(PortabilityLayer::VirtualDirectory_t virtualDirectory, char const* const* paths, size_t numPaths);

	jobject m_activity;
	jmethodID m_scanAssetDirectoryMID;

	static GpFileSystem_Android ms_instance;
};