// SPDX-License-Identifier: MIT
/**
   Copyright (c) 2020 - 2022 Beckhoff Automation GmbH & Co. KG
 */

#pragma once
#pragma pack( push, 1)

#include "AdsDevice.h"

enum FOPEN : uint32_t {
    READ = 1 << 0,
    WRITE = 1 << 1,
    APPEND = 1 << 2,
    PLUS = 1 << 3,
    BINARY = 1 << 4,
    TEXT = 1 << 5,
    ENSURE_DIR = 1 << 6,
    ENABLE_DIR = 1 << 7,
    OVERWRITE = 1 << 8,
    OVERWRITE_RENAME = 1 << 9,
    SHIFT_OPENPATH = 16,
};

namespace Beckhoff
{
namespace Ads
{
/**
 * @brief This structure describes file information reveived via ADS
 *
 * Calling ReadWriteReqEx2 with IndexGroup == SYSTEMSERVICE_FFILEFIND
 * will return ADS file information in the provided readData buffer.
 * The data of that information is structured as TcFileFindData.
 */
struct TcFileFindData {
    uint32_t hFile;
    uint32_t dwFileAttributes;
    uint64_t nReserved1[5];
    char cFileName[260];
    char unused[14];
    uint16_t nReserved2;

    bool isDirectory(void) const
    {
        return 0x10 & dwFileAttributes;
    }

    void letoh(void)
    {
        hFile = Beckhoff::letoh(hFile);
        dwFileAttributes = Beckhoff::letoh(dwFileAttributes);
    }
};

struct AdsFile {
    AdsFile(const AdsDevice& route, const std::string& filename, uint32_t flags);
    void Read(const size_t size, void* data, uint32_t& bytesRead) const;
    void Write(const size_t size, const void* data) const;

    static void Delete(const AdsDevice& route, const std::string& filename, uint32_t flags);
    static int Find(const AdsDevice& route, const std::string& path, const size_t maxdepth, std::ostream& os);
private:
    const AdsDevice& m_Route;
    const AdsHandle m_Handle;
};
}
}

#pragma pack( pop )