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

   This file is part of the JUCE 6 technical preview.
   Copyright (c) 2020 - Raw Material Software Limited

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

   For this technical preview, this file is not subject to commercial licensing.

   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
{

RecentlyOpenedFilesList::RecentlyOpenedFilesList()
    : maxNumberOfItems (10)
{
}

RecentlyOpenedFilesList::~RecentlyOpenedFilesList()
{
}

//==============================================================================
void RecentlyOpenedFilesList::setMaxNumberOfItems (const int newMaxNumber)
{
    maxNumberOfItems = jmax (1, newMaxNumber);

    files.removeRange (maxNumberOfItems, getNumFiles());
}

int RecentlyOpenedFilesList::getNumFiles() const
{
    return files.size();
}

File RecentlyOpenedFilesList::getFile (const int index) const
{
    return File (files [index]);
}

void RecentlyOpenedFilesList::clear()
{
    files.clear();
}

void RecentlyOpenedFilesList::addFile (const File& file)
{
    removeFile (file);
    files.insert (0, file.getFullPathName());

    setMaxNumberOfItems (maxNumberOfItems);
}

void RecentlyOpenedFilesList::removeFile (const File& file)
{
    files.removeString (file.getFullPathName());
}

void RecentlyOpenedFilesList::removeNonExistentFiles()
{
    for (int i = getNumFiles(); --i >= 0;)
        if (! getFile(i).exists())
            files.remove (i);
}

//==============================================================================
int RecentlyOpenedFilesList::createPopupMenuItems (PopupMenu& menuToAddTo,
                                                   const int baseItemId,
                                                   const bool showFullPaths,
                                                   const bool dontAddNonExistentFiles,
                                                   const File** filesToAvoid)
{
    int num = 0;

    for (int i = 0; i < getNumFiles(); ++i)
    {
        const File f (getFile(i));

        if ((! dontAddNonExistentFiles) || f.exists())
        {
            bool needsAvoiding = false;

            if (filesToAvoid != nullptr)
            {
                for (const File** avoid = filesToAvoid; *avoid != nullptr; ++avoid)
                {
                    if (f == **avoid)
                    {
                        needsAvoiding = true;
                        break;
                    }
                }
            }

            if (! needsAvoiding)
            {
                menuToAddTo.addItem (baseItemId + i,
                                     showFullPaths ? f.getFullPathName()
                                                   : f.getFileName());
                ++num;
            }
        }
    }

    return num;
}

//==============================================================================
String RecentlyOpenedFilesList::toString() const
{
    return files.joinIntoString ("\n");
}

void RecentlyOpenedFilesList::restoreFromString (const String& stringifiedVersion)
{
    clear();
    files.addLines (stringifiedVersion);

    setMaxNumberOfItems (maxNumberOfItems);
}


//==============================================================================
void RecentlyOpenedFilesList::registerRecentFileNatively (const File& file)
{
   #if JUCE_MAC
    JUCE_AUTORELEASEPOOL
    {
        [[NSDocumentController sharedDocumentController] noteNewRecentDocumentURL: createNSURLFromFile (file)];
    }
   #else
    ignoreUnused (file);
   #endif
}

void RecentlyOpenedFilesList::forgetRecentFileNatively (const File& file)
{
   #if JUCE_MAC
    JUCE_AUTORELEASEPOOL
    {
        // for some reason, OSX doesn't provide a method to just remove a single file
        // from the recent list, so we clear them all and add them back excluding
        // the specified file

        auto sharedDocController = [NSDocumentController sharedDocumentController];
        auto recentDocumentURLs  = [sharedDocController recentDocumentURLs];

        [sharedDocController clearRecentDocuments: nil];

        auto* nsFile = createNSURLFromFile (file);

        auto reverseEnumerator = [recentDocumentURLs reverseObjectEnumerator];

        for (NSURL* url : reverseEnumerator)
            if (! [url isEqual:nsFile])
                [sharedDocController noteNewRecentDocumentURL:url];
    }
   #else
    ignoreUnused (file);
   #endif
}

void RecentlyOpenedFilesList::clearRecentFilesNatively()
{
   #if JUCE_MAC
    JUCE_AUTORELEASEPOOL
    {
        [[NSDocumentController sharedDocumentController] clearRecentDocuments: nil];
    }
   #endif
}

} // namespace juce