public void UpdateChapters(long projectId, int userId, BookData bookData, List <PageResource> dbPageResources)
{
m_allImportedResourceVersionIds = new List <long>();
if (bookData.BookContentItems == null)
{
return;
}
var now = DateTime.UtcNow;
var importedChapterResourceIds = new HashSet <long>();
var user = m_resourceRepository.Load <User>(userId);
var project = m_resourceRepository.Load <Project>(projectId);
var dbChapters = m_resourceRepository.GetProjectLatestChapters(projectId);
var dbChaptersByName = dbChapters.ToDictionaryMultipleValues(x => x.Name);
var dbPagesByPosition = dbPageResources != null
? dbPageResources.ToDictionary(x => x.Position)
: new Dictionary <int, PageResource>();
var chapterRecursionData = new ChapterRecursionData
{
UpdatedChapterResourceIds = importedChapterResourceIds,
DbChaptersByName = dbChaptersByName,
DbPagesByPosition = dbPagesByPosition,
Project = project,
User = user,
Now = now,
};
UpdateChapterList(bookData.BookContentItems, null, chapterRecursionData);
var unusedDbChapters = dbChapters.Where(x => !importedChapterResourceIds.Contains(x.Id));
foreach (var unusedDbChapter in unusedDbChapters)
{
var resourceToRemove = unusedDbChapter.Resource;
resourceToRemove.IsRemoved = true;
m_resourceRepository.Update(resourceToRemove);
}
}
private void UpdateChapterList(IList <BookContentItemData> bookContentItems, ChapterResource parentChapter, ChapterRecursionData data)
{
var parentChapterResourceResource = parentChapter?.Resource;
var updatedChapterResourceIds = data.UpdatedChapterResourceIds;
var dbPagesByPosition = data.DbPagesByPosition;
var dbChaptersByName = data.DbChaptersByName;
var project = data.Project;
var user = data.User;
var now = data.Now;
foreach (var bookContentItem in bookContentItems)
{
PageResource dbPage;
if (bookContentItem.Page == null)
{
dbPage = null;
}
else if (!dbPagesByPosition.TryGetValue(bookContentItem.Page.Position, out dbPage))
{
throw new ArgumentException($"Trying assign Chapter to non-existent Page with position {bookContentItem.Page.Position} (page name: {bookContentItem.Page.Text})");
}
ChapterResource dbChapter = null;
List <ChapterResource> dbChapters;
if (dbChaptersByName.TryGetValue(bookContentItem.Text, out dbChapters))
{
dbChapter = dbChapters.Count == 1
? dbChapters.First()
: dbChapters.FirstOrDefault(x => x.Position == bookContentItem.ItemOrder); // If multiple chapters have the same name, try identify chapter by Position
}
var newDbChapter = new ChapterResource
{
Resource = null,
Name = bookContentItem.Text,
ResourceBeginningPage = dbPage?.Resource,
Comment = string.Empty,
CreateTime = now,
CreatedByUser = user,
Position = bookContentItem.ItemOrder,
VersionNumber = 0,
ParentResource = parentChapterResourceResource
};
if (dbChapter == null)
{
var newResource = new Resource
{
Project = project,
ContentType = ContentTypeEnum.Chapter,
Name = bookContentItem.Text,
LatestVersion = null,
ResourceType = ResourceTypeEnum.Chapter
};
newDbChapter.Resource = newResource;
newDbChapter.VersionNumber = 1;
}
else
{
newDbChapter.Resource = dbChapter.Resource;
newDbChapter.VersionNumber = dbChapter.VersionNumber + 1;
updatedChapterResourceIds.Add(dbChapter.Id);
}
newDbChapter.Resource.LatestVersion = newDbChapter;
m_resourceRepository.Create(newDbChapter);
m_allImportedResourceVersionIds.Add(newDbChapter.Id);
UpdateChapterList(bookContentItem.SubContentItems, newDbChapter, data);
}
}
