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

 * Project:  CPL - Common Portability Library

 * Purpose:  OpenStack Swift Object Storage routines

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

 *

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

 * Copyright (c) 2018, Even Rouault <even.rouault at spatialys.com>

 *

 * SPDX-License-Identifier: MIT

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

#ifndef CPL_SWIFT_INCLUDED_H

#define CPL_SWIFT_INCLUDED_H

#ifndef DOXYGEN_SKIP

#ifdef HAVE_CURL

#include <curl/curl.h>

#include "cpl_http.h"

#include "cpl_aws.h"

#include "cpl_json.h"

#include <map>

class VSISwiftHandleHelper final : public IVSIS3LikeHandleHelper

{

    std::string m_osURL;

    std::string m_osStorageURL;

    std::string m_osAuthToken;

    std::string m_osBucket;

    std::string m_osObjectKey;

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

                                 std::string &osStorageURL,

                                 std::string &osAuthToken);

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

                          const char *pszURLKey, const char *pszUserKey,

                          const char *pszPasswordKey, std::string &osStorageURL,

                          std::string &osAuthToken);

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

                                const std::string &osBucket,

                                const std::string &osObjectKey);

    void RebuildURL() override;

    // V1 Authentication

    static bool CheckCredentialsV1(const std::string &osPathForOption);

    static bool AuthV1(const std::string &osPathForOption,

                       std::string &osStorageURL, std::string &osAuthToken);

    // V3 Authentication

    static bool CheckCredentialsV3(const std::string &osPathForOption,

                                   const std::string &osAuthType);

    static bool AuthV3(const std::string &osPathForOption,

                       const std::string &osAuthType, std::string &osStorageURL,

                       std::string &osAuthToken);

    static CPLJSONObject

    CreateAuthV3RequestObject(const std::string &osPathForOption,

                              const std::string &osAuthType);

    static bool GetAuthV3StorageURL(const std::string &osPathForOption,

                                    const CPLHTTPResult *psResult,

                                    std::string &storageURL);

  public:

    VSISwiftHandleHelper(const std::string &osStorageURL,

                         const std::string &osAuthToken,

                         const std::string &osBucket,

                         const std::string &osObjectKey);

    ~VSISwiftHandleHelper() override;

    bool Authenticate(const std::string &osPathForOption);

    static VSISwiftHandleHelper *BuildFromURI(const char *pszURI,

                                              const char *pszFSPrefix);

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

                                      struct curl_slist *psHeaders,

                                      const void *pabyDataContent = nullptr,

                                      size_t nBytesContent = 0) const override;

    const std::string &GetURL() const override

    {

        return m_osURL;

    }

    static void CleanMutex();

    static void ClearCache();

};

#endif /* HAVE_CURL */

#endif /* #ifndef DOXYGEN_SKIP */

#endif /* CPL_SWIFT_INCLUDED_H */