DownloadUpdateDialog.h

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#ifdef HR_LEGACY_BUILD
// DownloadUpdateDialog.h
// Dialog to download an update from the server and notify user of progress.
//
// Copyright (c) 2009 Ryan Curtin
//
// Licensed under GrokkSoft HoverRace SourceCode License v1.0(the "License");
// you may not use this file except in compliance with the License.
//
// A copy of the license should have been attached to the package from which
// you have taken this file. If you can not find the license you can not use
// this file.
//
//
// The author makes no representations about the suitability of
// this software for any purpose.  It is provided "as is" "AS IS",
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied.
//
// See the License for the specific language governing permissions
// and limitations under the License.

#pragma once

#include <string>

#include "../../engine/Util/OS.h"

typedef void CURL;

namespace HoverRace {
namespace Client {

class DownloadUpdateDialog
{
    public:
        DownloadUpdateDialog(const std::string &baseUrl, const Util::OS::path_t &filename, const Util::OS::path_t &destDir);
        ~DownloadUpdateDialog();

        bool ShowModal(HINSTANCE hinst, HWND parent);

    private:
        enum state_t {
            ST_INITIALIZING,
            ST_DOWNLOADING,
            ST_FINISHED,
            ST_LAST
        };

        const char **GetStateNames();
        void SetState(state_t st);
        void UpdateDialogProgress(HWND hwnd);

        void ThreadProc();

        BOOL DlgProc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam);
        static BOOL CALLBACK DlgFunc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam);

        static size_t WriteFunc(void *ptr, size_t size, size_t nmemb, void *stream);
        size_t ProgressProc(double dlTotal, double dlNow);
        static size_t ProgressFunc(void *clientp, double dlTotal, double dlNow, double, double);

    private:
        std::string baseUrl;
        Util::OS::path_t filename;
        Util::OS::path_t destDir;

        HWND dlgHwnd;

        CURL *updateDl;
        char *curlErrorBuf;

        volatile state_t state;
        volatile bool cancel;

        FILE *outFile;

        volatile size_t bufSize;
        size_t bufCapacity;
        volatile size_t bufTotal;
};

}  // namespace Client
}  // namespace HoverRace
#endif