1 files changed, 157 insertions, 0 deletions
diff --git a/xbmc/utils/GroupUtils.cpp b/xbmc/utils/GroupUtils.cpp
new file mode 100644
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--- /dev/null
+++ b/xbmc/utils/GroupUtils.cpp
@@ -0,0 +1,157 @@
+/*
+ *  Copyright (C) 2012-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#include "GroupUtils.h"
+
+#include "FileItem.h"
+#include "filesystem/MultiPathDirectory.h"
+#include "utils/StringUtils.h"
+#include "utils/URIUtils.h"
+#include "video/VideoDbUrl.h"
+#include "video/VideoInfoTag.h"
+
+#include <map>
+#include <set>
+
+using SetMap = std::map<int, std::set<CFileItemPtr> >;
+
+bool GroupUtils::Group(GroupBy groupBy, const std::string &baseDir, const CFileItemList &items, CFileItemList &groupedItems, GroupAttribute groupAttributes /* = GroupAttributeNone */)
+{
+  CFileItemList ungroupedItems;
+  return Group(groupBy, baseDir, items, groupedItems, ungroupedItems, groupAttributes);
+}
+
+bool GroupUtils::Group(GroupBy groupBy, const std::string &baseDir, const CFileItemList &items, CFileItemList &groupedItems, CFileItemList &ungroupedItems, GroupAttribute groupAttributes /* = GroupAttributeNone */)
+{
+  if (groupBy == GroupByNone)
+    return false;
+
+  // nothing to do if there are no items to group
+  if (items.Size() <= 0)
+    return true;
+
+  SetMap setMap;
+  for (int index = 0; index < items.Size(); index++)
+  {
+    bool ungrouped = true;
+    const CFileItemPtr item = items.Get(index);
+
+    // group by sets
+    if ((groupBy & GroupBySet) &&
+      item->HasVideoInfoTag() && item->GetVideoInfoTag()->m_set.id > 0)
+    {
+      ungrouped = false;
+      setMap[item->GetVideoInfoTag()->m_set.id].insert(item);
+    }
+
+    if (ungrouped)
+      ungroupedItems.Add(item);
+  }
+
+  if ((groupBy & GroupBySet) && !setMap.empty())
+  {
+    CVideoDbUrl itemsUrl;
+    if (!itemsUrl.FromString(baseDir))
+      return false;
+
+    for (SetMap::const_iterator set = setMap.begin(); set != setMap.end(); ++set)
+    {
+      // only one item in the set, so add it to the ungrouped items
+      if (set->second.size() == 1 && (groupAttributes & GroupAttributeIgnoreSingleItems))
+      {
+        ungroupedItems.Add(*set->second.begin());
+        continue;
+      }
+
+      CFileItemPtr pItem(new CFileItem((*set->second.begin())->GetVideoInfoTag()->m_set.title));
+      pItem->GetVideoInfoTag()->m_iDbId = set->first;
+      pItem->GetVideoInfoTag()->m_type = MediaTypeVideoCollection;
+
+      std::string basePath = StringUtils::Format("videodb://movies/sets/{}/", set->first);
+      CVideoDbUrl videoUrl;
+      if (!videoUrl.FromString(basePath))
+        pItem->SetPath(basePath);
+      else
+      {
+        videoUrl.AddOptions((*set->second.begin())->GetURL().GetOptions());
+        pItem->SetPath(videoUrl.ToString());
+      }
+      pItem->m_bIsFolder = true;
+
+      CVideoInfoTag* setInfo = pItem->GetVideoInfoTag();
+      setInfo->m_strPath = pItem->GetPath();
+      setInfo->m_strTitle = pItem->GetLabel();
+      setInfo->m_strPlot = (*set->second.begin())->GetVideoInfoTag()->m_set.overview;
+
+      int ratings = 0;
+      float totalRatings = 0;
+      int iWatched = 0; // have all the movies been played at least once?
+      std::set<std::string> pathSet;
+      for (std::set<CFileItemPtr>::const_iterator movie = set->second.begin(); movie != set->second.end(); ++movie)
+      {
+        CVideoInfoTag* movieInfo = (*movie)->GetVideoInfoTag();
+        // handle rating
+        if (movieInfo->GetRating().rating > 0.0f)
+        {
+          ratings++;
+          totalRatings += movieInfo->GetRating().rating;
+        }
+
+        // handle year
+        if (movieInfo->GetYear() > setInfo->GetYear())
+          setInfo->SetYear(movieInfo->GetYear());
+
+        // handle lastplayed
+        if (movieInfo->m_lastPlayed.IsValid() && movieInfo->m_lastPlayed > setInfo->m_lastPlayed)
+          setInfo->m_lastPlayed = movieInfo->m_lastPlayed;
+
+        // handle dateadded
+        if (movieInfo->m_dateAdded.IsValid() && movieInfo->m_dateAdded > setInfo->m_dateAdded)
+          setInfo->m_dateAdded = movieInfo->m_dateAdded;
+
+        // handle playcount/watched
+        setInfo->SetPlayCount(setInfo->GetPlayCount() + movieInfo->GetPlayCount());
+        if (movieInfo->GetPlayCount() > 0)
+          iWatched++;
+
+        //accumulate the path for a multipath construction
+        CFileItem video(movieInfo->m_basePath, false);
+        if (video.IsVideo())
+          pathSet.insert(URIUtils::GetParentPath(movieInfo->m_basePath));
+        else
+          pathSet.insert(movieInfo->m_basePath);
+      }
+      setInfo->m_basePath = XFILE::CMultiPathDirectory::ConstructMultiPath(pathSet);
+
+      if (ratings > 0)
+        pItem->GetVideoInfoTag()->SetRating(totalRatings / ratings);
+
+      setInfo->SetPlayCount(iWatched >= static_cast<int>(set->second.size()) ? (setInfo->GetPlayCount() / set->second.size()) : 0);
+      pItem->SetProperty("total", (int)set->second.size());
+      pItem->SetProperty("watched", iWatched);
+      pItem->SetProperty("unwatched", (int)set->second.size() - iWatched);
+      pItem->SetOverlayImage(CGUIListItem::ICON_OVERLAY_UNWATCHED, setInfo->GetPlayCount() > 0);
+
+      groupedItems.Add(pItem);
+    }
+  }
+
+  return true;
+}
+
+bool GroupUtils::GroupAndMix(GroupBy groupBy, const std::string &baseDir, const CFileItemList &items, CFileItemList &groupedItemsMixed, GroupAttribute groupAttributes /* = GroupAttributeNone */)
+{
+  CFileItemList ungroupedItems;
+  if (!Group(groupBy, baseDir, items, groupedItemsMixed, ungroupedItems, groupAttributes))
+    return false;
+
+  // add all the ungrouped items as well
+  groupedItemsMixed.Append(ungroupedItems);
+
+  return true;
+}