/*
  ==============================================================================

   This file is part of the JUCE library.
   Copyright (c) 2020 - Raw Material Software Limited

   JUCE is an open source library subject to commercial or open-source
   licensing.

   By using JUCE, you agree to the terms of both the JUCE 6 End-User License
   Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).

   End User License Agreement: www.juce.com/juce-6-licence
   Privacy Policy: www.juce.com/juce-privacy-policy

   Or: You may also use this code under the terms of the GPL v3 (see
   www.gnu.org/licenses).

   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.

  ==============================================================================
*/

namespace juce
{

namespace X11SymbolHelpers
{

template <typename FuncPtr>
struct SymbolBinding
{
    FuncPtr& func;
    const char* name;
};

template <typename FuncPtr>
SymbolBinding<FuncPtr> makeSymbolBinding (FuncPtr& func, const char* name)
{
    return { func, name };
}

template <typename FuncPtr>
bool loadSymbols (DynamicLibrary& lib, SymbolBinding<FuncPtr> binding)
{
    if (auto* func = lib.getFunction (binding.name))
    {
        binding.func = reinterpret_cast<FuncPtr> (func);
        return true;
    }

    return false;
}

template <typename FuncPtr, typename... Args>
bool loadSymbols (DynamicLibrary& lib1, DynamicLibrary& lib2, SymbolBinding<FuncPtr> binding)
{
    return loadSymbols (lib1, binding) || loadSymbols (lib2, binding);
}

template <typename FuncPtr, typename... Args>
bool loadSymbols (DynamicLibrary& lib, SymbolBinding<FuncPtr> binding, Args... args)
{
    return loadSymbols (lib, binding) && loadSymbols (lib, args...);
}

template <typename FuncPtr, typename... Args>
bool loadSymbols (DynamicLibrary& lib1, DynamicLibrary& lib2, SymbolBinding<FuncPtr> binding, Args... args)
{
    return loadSymbols (lib1, lib2, binding) && loadSymbols (lib1, lib2, args...);
}

}

//==============================================================================
bool X11Symbols::loadAllSymbols()
{
    using namespace X11SymbolHelpers;

    if (! loadSymbols (xLib, xextLib,
                       makeSymbolBinding (xAllocClassHint,             "XAllocClassHint"),
                       makeSymbolBinding (xAllocSizeHints,             "XAllocSizeHints"),
                       makeSymbolBinding (xAllocWMHints,               "XAllocWMHints"),
                       makeSymbolBinding (xBitmapBitOrder,             "XBitmapBitOrder"),
                       makeSymbolBinding (xBitmapUnit,                 "XBitmapUnit"),
                       makeSymbolBinding (xChangeActivePointerGrab,    "XChangeActivePointerGrab"),
                       makeSymbolBinding (xChangeProperty,             "XChangeProperty"),
                       makeSymbolBinding (xCheckTypedWindowEvent,      "XCheckTypedWindowEvent"),
                       makeSymbolBinding (xCheckWindowEvent,           "XCheckWindowEvent"),
                       makeSymbolBinding (xClearArea,                  "XClearArea"),
                       makeSymbolBinding (xCloseDisplay,               "XCloseDisplay"),
                       makeSymbolBinding (xConnectionNumber,           "XConnectionNumber"),
                       makeSymbolBinding (xConvertSelection,           "XConvertSelection"),
                       makeSymbolBinding (xCreateColormap,             "XCreateColormap"),
                       makeSymbolBinding (xCreateFontCursor,           "XCreateFontCursor"),
                       makeSymbolBinding (xCreateGC,                   "XCreateGC"),
                       makeSymbolBinding (xCreateImage,                "XCreateImage"),
                       makeSymbolBinding (xCreatePixmap,               "XCreatePixmap"),
                       makeSymbolBinding (xCreatePixmapCursor,         "XCreatePixmapCursor"),
                       makeSymbolBinding (xCreatePixmapFromBitmapData, "XCreatePixmapFromBitmapData"),
                       makeSymbolBinding (xCreateWindow,               "XCreateWindow"),
                       makeSymbolBinding (xDefaultRootWindow,          "XDefaultRootWindow"),
                       makeSymbolBinding (xDefaultScreen,              "XDefaultScreen"),
                       makeSymbolBinding (xDefaultScreenOfDisplay,     "XDefaultScreenOfDisplay"),
                       makeSymbolBinding (xDefaultVisual,              "XDefaultVisual"),
                       makeSymbolBinding (xDefineCursor,               "XDefineCursor"),
                       makeSymbolBinding (xDeleteContext,              "XDeleteContext"),
                       makeSymbolBinding (xDeleteProperty,             "XDeleteProperty"),
                       makeSymbolBinding (xDestroyImage,               "XDestroyImage"),
                       makeSymbolBinding (xDestroyWindow,              "XDestroyWindow"),
                       makeSymbolBinding (xDisplayHeight,              "XDisplayHeight"),
                       makeSymbolBinding (xDisplayHeightMM,            "XDisplayHeightMM"),
                       makeSymbolBinding (xDisplayWidth,               "XDisplayWidth"),
                       makeSymbolBinding (xDisplayWidthMM,             "XDisplayWidthMM"),
                       makeSymbolBinding (xEventsQueued,               "XEventsQueued"),
                       makeSymbolBinding (xFindContext,                "XFindContext"),
                       makeSymbolBinding (xFlush,                      "XFlush"),
                       makeSymbolBinding (xFree,                       "XFree"),
                       makeSymbolBinding (xFreeCursor,                 "XFreeCursor"),
                       makeSymbolBinding (xFreeColormap,               "XFreeColormap"),
                       makeSymbolBinding (xFreeGC,                     "XFreeGC"),
                       makeSymbolBinding (xFreeModifiermap,            "XFreeModifiermap"),
                       makeSymbolBinding (xFreePixmap,                 "XFreePixmap"),
                       makeSymbolBinding (xGetAtomName,                "XGetAtomName"),
                       makeSymbolBinding (xGetErrorDatabaseText,       "XGetErrorDatabaseText"),
                       makeSymbolBinding (xGetErrorText,               "XGetErrorText"),
                       makeSymbolBinding (xGetGeometry,                "XGetGeometry"),
                       makeSymbolBinding (xGetImage,                   "XGetImage"),
                       makeSymbolBinding (xGetInputFocus,              "XGetInputFocus"),
                       makeSymbolBinding (xGetModifierMapping,         "XGetModifierMapping"),
                       makeSymbolBinding (xGetPointerMapping,          "XGetPointerMapping"),
                       makeSymbolBinding (xGetSelectionOwner,          "XGetSelectionOwner"),
                       makeSymbolBinding (xGetVisualInfo,              "XGetVisualInfo"),
                       makeSymbolBinding (xGetWMHints,                 "XGetWMHints"),
                       makeSymbolBinding (xGetWindowAttributes,        "XGetWindowAttributes"),
                       makeSymbolBinding (xGetWindowProperty,          "XGetWindowProperty"),
                       makeSymbolBinding (xGrabPointer,                "XGrabPointer"),
                       makeSymbolBinding (xGrabServer,                 "XGrabServer"),
                       makeSymbolBinding (xImageByteOrder,             "XImageByteOrder"),
                       makeSymbolBinding (xInitImage,                  "XInitImage"),
                       makeSymbolBinding (xInitThreads,                "XInitThreads"),
                       makeSymbolBinding (xInstallColormap,            "XInstallColormap"),
                       makeSymbolBinding (xInternAtom,                 "XInternAtom"),
                       makeSymbolBinding (xkbKeycodeToKeysym,          "XkbKeycodeToKeysym"),
                       makeSymbolBinding (xKeysymToKeycode,            "XKeysymToKeycode"),
                       makeSymbolBinding (xListProperties,             "XListProperties"),
                       makeSymbolBinding (xLockDisplay,                "XLockDisplay"),
                       makeSymbolBinding (xLookupString,               "XLookupString"),
                       makeSymbolBinding (xMapRaised,                  "XMapRaised"),
                       makeSymbolBinding (xMapWindow,                  "XMapWindow"),
                       makeSymbolBinding (xMoveResizeWindow,           "XMoveResizeWindow"),
                       makeSymbolBinding (xNextEvent,                  "XNextEvent"),
                       makeSymbolBinding (xOpenDisplay,                "XOpenDisplay"),
                       makeSymbolBinding (xPeekEvent,                  "XPeekEvent"),
                       makeSymbolBinding (xPending,                    "XPending"),
                       makeSymbolBinding (xPutImage,                   "XPutImage"),
                       makeSymbolBinding (xPutPixel,                   "XPutPixel"),
                       makeSymbolBinding (xQueryBestCursor,            "XQueryBestCursor"),
                       makeSymbolBinding (xQueryExtension,             "XQueryExtension"),
                       makeSymbolBinding (xQueryPointer,               "XQueryPointer"),
                       makeSymbolBinding (xQueryTree,                  "XQueryTree"),
                       makeSymbolBinding (xRefreshKeyboardMapping,     "XRefreshKeyboardMapping"),
                       makeSymbolBinding (xReparentWindow,             "XReparentWindow"),
                       makeSymbolBinding (xResizeWindow,               "XResizeWindow"),
                       makeSymbolBinding (xRestackWindows,             "XRestackWindows"),
                       makeSymbolBinding (xRootWindow,                 "XRootWindow"),
                       makeSymbolBinding (xSaveContext,                "XSaveContext"),
                       makeSymbolBinding (xScreenCount,                "XScreenCount"),
                       makeSymbolBinding (xScreenNumberOfScreen,       "XScreenNumberOfScreen"),
                       makeSymbolBinding (xSelectInput,                "XSelectInput"),
                       makeSymbolBinding (xSendEvent,                  "XSendEvent"),
                       makeSymbolBinding (xSetClassHint,               "XSetClassHint"),
                       makeSymbolBinding (xSetErrorHandler,            "XSetErrorHandler"),
                       makeSymbolBinding (xSetIOErrorHandler,          "XSetIOErrorHandler"),
                       makeSymbolBinding (xSetInputFocus,              "XSetInputFocus"),
                       makeSymbolBinding (xSetSelectionOwner,          "XSetSelectionOwner"),
                       makeSymbolBinding (xSetWMHints,                 "XSetWMHints"),
                       makeSymbolBinding (xSetWMIconName,              "XSetWMIconName"),
                       makeSymbolBinding (xSetWMName,                  "XSetWMName"),
                       makeSymbolBinding (xSetWMNormalHints,           "XSetWMNormalHints"),
                       makeSymbolBinding (xStringListToTextProperty,   "XStringListToTextProperty"),
                       makeSymbolBinding (xSync,                       "XSync"),
                       makeSymbolBinding (xSynchronize,                "XSynchronize"),
                       makeSymbolBinding (xTranslateCoordinates,       "XTranslateCoordinates"),
                       makeSymbolBinding (xrmUniqueQuark,              "XrmUniqueQuark"),
                       makeSymbolBinding (xUngrabPointer,              "XUngrabPointer"),
                       makeSymbolBinding (xUngrabServer,               "XUngrabServer"),
                       makeSymbolBinding (xUnlockDisplay,              "XUnlockDisplay"),
                       makeSymbolBinding (xUnmapWindow,                "XUnmapWindow"),
                       makeSymbolBinding (xutf8TextListToTextProperty, "Xutf8TextListToTextProperty"),
                       makeSymbolBinding (xWarpPointer,                "XWarpPointer")))
        return false;

   #if JUCE_USE_XCURSOR
    loadSymbols (xcursorLib,
                 makeSymbolBinding (xcursorImageCreate,          "XcursorImageCreate"),
                 makeSymbolBinding (xcursorImageLoadCursor,      "XcursorImageLoadCursor"),
                 makeSymbolBinding (xcursorImageDestroy,         "XcursorImageDestroy"));
   #endif
   #if JUCE_USE_XINERAMA
    loadSymbols (xineramaLib,
                 makeSymbolBinding (xineramaIsActive,            "XineramaIsActive"),
                 makeSymbolBinding (xineramaQueryScreens,        "XineramaQueryScreens"));
   #endif
   #if JUCE_USE_XRENDER
    loadSymbols (xrenderLib,
                 makeSymbolBinding (xRenderQueryVersion,         "XRenderQueryVersion"),
                 makeSymbolBinding (xRenderFindStandardFormat,   "XRenderFindStandardFormat"),
                 makeSymbolBinding (xRenderFindFormat,           "XRenderFindFormat"),
                 makeSymbolBinding (xRenderFindVisualFormat,     "XRenderFindVisualFormat"));
   #endif
   #if JUCE_USE_XRANDR
    loadSymbols (xrandrLib,
                 makeSymbolBinding (xRRGetScreenResources,       "XRRGetScreenResources"),
                 makeSymbolBinding (xRRFreeScreenResources,      "XRRFreeScreenResources"),
                 makeSymbolBinding (xRRGetOutputInfo,            "XRRGetOutputInfo"),
                 makeSymbolBinding (xRRFreeOutputInfo,           "XRRFreeOutputInfo"),
                 makeSymbolBinding (xRRGetCrtcInfo,              "XRRGetCrtcInfo"),
                 makeSymbolBinding (xRRFreeCrtcInfo,             "XRRFreeCrtcInfo"),
                 makeSymbolBinding (xRRGetOutputPrimary,         "XRRGetOutputPrimary"));
   #endif
   #if JUCE_USE_XSHM
    loadSymbols (xLib, xextLib,
                 makeSymbolBinding (xShmAttach,                  "XShmAttach"),
                 makeSymbolBinding (xShmCreateImage,             "XShmCreateImage"),
                 makeSymbolBinding (xShmDetach,                  "XShmDetach"),
                 makeSymbolBinding (xShmGetEventBase,            "XShmGetEventBase"),
                 makeSymbolBinding (xShmPutImage,                "XShmPutImage"),
                 makeSymbolBinding (xShmQueryVersion,            "XShmQueryVersion"));
   #endif

    return true;
}

//==============================================================================
JUCE_IMPLEMENT_SINGLETON (X11Symbols)

}
