/**********************************************************************

 *

 * Name:     cpl_alibaba_oss.h

 * Project:  CPL - Common Portability Library

 * Purpose:  Alibaba Cloud Object Storage Service

 * Author:   Even Rouault <even.rouault at spatialys.com>

 *

 **********************************************************************

 * Copyright (c) 2017, Even Rouault <even.rouault at spatialys.com>

 *

 * SPDX-License-Identifier: MIT

 ****************************************************************************/

#ifndef CPL_ALIBABA_OSS_INCLUDED_H

#define CPL_ALIBABA_OSS_INCLUDED_H

#ifndef DOXYGEN_SKIP

#include <cstddef>

#include "cpl_string.h"

#ifdef HAVE_CURL

#include <curl/curl.h>

#include <map>

#include "cpl_aws.h"

class VSIOSSHandleHelper final : public IVSIS3LikeHandleHelper

{

    CPL_DISALLOW_COPY_ASSIGN(VSIOSSHandleHelper)

    std::string m_osURL{};

    std::string m_osSecretAccessKey{};

    std::string m_osAccessKeyId{};

    std::string m_osEndpoint{};

    std::string m_osBucket{};

    std::string m_osObjectKey{};

    bool m_bUseHTTPS = false;

    bool m_bUseVirtualHosting = false;

    void RebuildURL() override;

    static bool GetConfiguration(const std::string &osPathForOption,

                                 CSLConstList papszOptions,

                                 std::string &osSecretAccessKey,

                                 std::string &osAccessKeyId);

  protected:

  public:

    VSIOSSHandleHelper(const std::string &osSecretAccessKey,

                       const std::string &osAccessKeyId,

                       const std::string &osEndpoint,

                       const std::string &osBucket,

                       const std::string &osObjectKey, bool bUseHTTPS,

                       bool bUseVirtualHosting);

    ~VSIOSSHandleHelper() override;

    static VSIOSSHandleHelper *

    BuildFromURI(const char *pszURI, const char *pszFSPrefix,

                 bool bAllowNoObject, CSLConstList papszOptions = nullptr);

    static std::string BuildURL(const std::string &osEndpoint,

                                const std::string &osBucket,

                                const std::string &osObjectKey, bool bUseHTTPS,

                                bool bUseVirtualHosting);

    struct curl_slist *GetCurlHeaders(const std::string &osVerb,

                                      struct curl_slist *psHeaders,

                                      const void *pabyDataContent = nullptr,

                                      size_t nBytesContent = 0) const override;

    bool CanRestartOnError(const char *, const char *pszHeaders,

                           bool bSetError) override;

    const std::string &GetURL() const override

    {

        return m_osURL;

    }

    const std::string &GetBucket() const

    {

        return m_osBucket;

    }

    const std::string &GetObjectKey() const

    {

        return m_osObjectKey;

    }

    const std::string &GetEndpoint() const

    {

        return m_osEndpoint;

    }

    bool GetVirtualHosting() const

    {

        return m_bUseVirtualHosting;

    }

    std::string GetCopySourceHeader() const override

    {

        return "x-oss-copy-source";

    }

    void SetEndpoint(const std::string &osStr);

    void SetVirtualHosting(bool b);

    std::string GetSignedURL(CSLConstList papszOptions);

};

class VSIOSSUpdateParams

{

  private:

    std::string m_osEndpoint{};

    explicit VSIOSSUpdateParams(const VSIOSSHandleHelper *poHelper)

        : m_osEndpoint(poHelper->GetEndpoint())

    {

    }

    void UpdateHandlerHelper(VSIOSSHandleHelper *poHelper)

    {

        poHelper->SetEndpoint(m_osEndpoint);

    }

    static std::mutex gsMutex;

    static std::map<std::string, VSIOSSUpdateParams> goMapBucketsToOSSParams;

  public:

    VSIOSSUpdateParams() = default;

    static void UpdateMapFromHandle(VSIOSSHandleHelper *poHandleHelper);

    static void UpdateHandleFromMap(VSIOSSHandleHelper *poHandleHelper);

    static void ClearCache();

};

#endif /* HAVE_CURL */

#endif /* #ifndef DOXYGEN_SKIP */

#endif /* CPL_ALIBABA_OSS_INCLUDED_H */