public async Task <BlobContent> ReadBlobContentAsync(long tenantId, long elementId, long blobSetId, string blobLabel)
{
HtmlElementSettings settings = await _elementRepository.ReadElementSettingsAsync(tenantId, elementId);
if (settings == null)
{
return(null);
}
HtmlBlobSet blobSet = settings.BlobSets.Where(s => s.BlobSetId == blobSetId).FirstOrDefault();
if (blobSet == null)
{
return(null);
}
long?blobId = GetBlobId(blobSet, blobLabel);
if (blobId == null)
{
return(null);
}
return(await _storageService.ReadBlobContentAsync(tenantId, blobId.Value, GetHtmlImagePath(elementId)));
}
public async Task UpdateElementSettingsAsync(long tenantId, long elementId, HtmlElementSettings settings)
{
// Ensure properties supplied are in the correct format
settings.Html = (settings.Html ?? string.Empty).Trim();
// Do the update
await((IHtmlElementRepository)_elementRepository).UpdateElementSettingsAsync(tenantId, elementId, settings);
}
public async Task UpdateElementSettingsAsync(long tenantId, long elementId, HtmlElementSettings settings)
{
// Get current element settings
HtmlElementSettings currentSettings = await _elementRepository.ReadElementSettingsAsync(tenantId, elementId);
// Ensure properties supplied are in the correct format
settings.Html = (settings.Html ?? string.Empty).Trim();
// Get uncommitted blob sets from HTML in the format...
// <img data-image-blob-id="2455" data-preview-image-blob-id="2456" data-thumbnail-image-blob-id="2457" src="/api/v1/storage/blobs/2456/content" />
IEnumerable <string> newImgBlocks = _stringUtilities.ListBlocks(settings.Html, "<img ", ">");
IEnumerable <HtmlBlobSet> newBlobSets = newImgBlocks.Select(img => GetHtmlBlobSet(img)).Where(bs => bs != null);
// Get existing blob sets from HTML in the format...
// <img src="/elementtypes/c92ee4c4-b133-44cc-8322-640e99c334dc/elements/789/blobsets/418/content" width="1200" height="900" alt="IMG_20180622_141721.jpg" />
IEnumerable <string> currentImgBlocks = _stringUtilities.ListBlocks(settings.Html, "<img src=\"/elementtypes/", ">");
IEnumerable <long> currentBlobSetIds = currentImgBlocks.Select(img => GetBlobSetId(img)).Where(id => id != 0);
// Update blob sets so collection includes current blob sets and new blob sets
settings.BlobSets = currentSettings.BlobSets.Where(b => currentBlobSetIds.Contains(b.BlobSetId)).Concat(newBlobSets);
// Get blob sets that are no longer included
IEnumerable <HtmlBlobSet> oldBlobSets = currentSettings.BlobSets.Where(b => !currentBlobSetIds.Contains(b.BlobSetId));
// Commit new blobs
foreach (HtmlBlobSet blobSet in newBlobSets)
{
await _storageService.CommitBlobAsync(tenantId, blobSet.ImageBlobId, GetHtmlImagePath(elementId));
await _storageService.CommitBlobAsync(tenantId, blobSet.PreviewImageBlobId, GetHtmlImagePath(elementId));
await _storageService.CommitBlobAsync(tenantId, blobSet.ThumbnailImageBlobId, GetHtmlImagePath(elementId));
}
// Do the update
await((IHtmlElementRepository)_elementRepository).UpdateElementSettingsAsync(tenantId, elementId, settings);
// Delete old blobs
foreach (HtmlBlobSet blobSet in oldBlobSets)
{
await _storageService.DeleteBlobAsync(tenantId, blobSet.ThumbnailImageBlobId, GetHtmlImagePath(elementId));
await _storageService.DeleteBlobAsync(tenantId, blobSet.PreviewImageBlobId, GetHtmlImagePath(elementId));
await _storageService.DeleteBlobAsync(tenantId, blobSet.ImageBlobId, GetHtmlImagePath(elementId));
}
// Update HTML so that links to uncommited images become links to committed images
HtmlElementSettings newSettings = await _elementRepository.ReadElementSettingsAsync(tenantId, elementId);
IDictionary <long, HtmlPreviewImage> previewImagesByHtmlBlobId = await GetPreviewImagesByHtmlBlobId(tenantId, newSettings);
IDictionary <long, long> blobSetIdsByPreviewImageBlobId = newSettings.BlobSets.ToDictionary(bs => bs.PreviewImageBlobId, bs => bs.BlobSetId);
HtmlTransformer transformer = new HtmlTransformer(elementId, previewImagesByHtmlBlobId, blobSetIdsByPreviewImageBlobId, _stringUtilities);
newSettings.Html = _stringUtilities.BlockReplace(newSettings.Html, "<img ", ">", transformer.EnsureCommittedUrl);
await((IHtmlElementRepository)_elementRepository).UpdateElementSettingsAsync(tenantId, elementId, newSettings);
}
public async Task <HtmlElementContent> ReadElementContentAsync(long tenantId, long elementId, long pageId)
{
HtmlElementSettings elementSettings = await _elementRepository.ReadElementSettingsAsync(tenantId, elementId);
return(new HtmlElementContent
{
FormattedHtml = FormatHtml(elementSettings.Html)
});
}
private async Task <HtmlElementSettings> GetElementSettingsAsync(long tenantId, long elementId)
{
// Get element settings
HtmlElementSettings settings = await _elementRepository.ReadElementSettingsAsync(tenantId, elementId);
if (settings == null)
{
return(null);
}
// Convert old format URLs into new format URLs
IDictionary <long, HtmlPreviewImage> previewImagesByHtmlBlobId = await GetPreviewImagesByHtmlBlobId(tenantId, settings);
HtmlTransformer transformer = new HtmlTransformer(elementId, previewImagesByHtmlBlobId, null, _stringUtilities);
settings.Html = ReplaceKeywords(settings.Html);
settings.Html = _stringUtilities.BlockReplace(settings.Html, "<img src=\"/elements/", ">", transformer.TransformUrl);
settings.Html = _stringUtilities.BlockReplace(settings.Html, "<img src=\"/elementtypes/", ">", transformer.CheckUrl);
// Return the result
return(settings);
}
public async Task <IElementView <HtmlElementSettings, HtmlElementContent> > ReadElementViewAsync(long tenantId, long elementId, IPageContext context)
{
// Get element settings
HtmlElementSettings settings = await _elementRepository.ReadElementSettingsAsync(tenantId, elementId);
if (settings == null)
{
return(null);
}
// Get details of all preview images that may be displayed in the HTML content
IEnumerable <long> blobIds = settings.BlobSets.Select(s => s.PreviewImageBlobId);
IEnumerable <Blob> blobs = await _storageService.ListBlobsAsync(tenantId, blobIds);
IDictionary <long, BlobImage> blobsById = blobs.ToDictionary(b => b.BlobId, b => (BlobImage)b);
// Construct dictionary containing details of all preview images keyed by blob set identifier
IDictionary <long, HtmlPreviewImage> previewImagesByHtmlBlobId = settings.BlobSets
.Where(s => blobsById.ContainsKey(s.PreviewImageBlobId))
.Select(s => GetHtmlPreviewImageFromHtmlBlob(s, blobsById))
.ToDictionary(i => i.BlobSetId, i => i);
// Format HTML
string formattedHtml = FormatHtml(settings.Html, previewImagesByHtmlBlobId);
// Construct element content
HtmlElementContent content = new HtmlElementContent
{
FormattedHtml = formattedHtml,
Images = previewImagesByHtmlBlobId
};
// Return element view
return(new ElementView <HtmlElementSettings, HtmlElementContent>
{
Settings = settings,
Content = content
});
}
public async Task <IElementView <HtmlElementSettings, HtmlElementContent> > ReadElementViewAsync(long tenantId, long elementId, IPageContext context)
{
// Get element settings
HtmlElementSettings settings = await GetElementSettingsAsync(tenantId, elementId);
if (settings == null)
{
return(null);
}
// Construct element content
HtmlElementContent content = new HtmlElementContent
{
FormattedHtml = settings.Html,
Images = null// previewImagesByHtmlBlobId
};
// Return element view
return(new ElementView <HtmlElementSettings, HtmlElementContent>
{
Settings = settings,
Content = content
});
}
private async Task <IDictionary <long, HtmlPreviewImage> > GetPreviewImagesByHtmlBlobId(long tenantId, HtmlElementSettings settings)
{
// Get details of all preview images that may be displayed in the HTML content
IEnumerable <long> blobIds = settings.BlobSets.Select(s => s.PreviewImageBlobId);
IEnumerable <Blob> blobs = await _storageService.ListBlobsAsync(tenantId, blobIds);
IDictionary <long, BlobImage> blobsById = blobs.ToDictionary(b => b.BlobId, b => (BlobImage)b);
// Construct dictionary containing details of all preview images keyed by blob set identifier
IDictionary <long, HtmlPreviewImage> previewImagesByHtmlBlobId = settings.BlobSets
.Where(s => blobsById.ContainsKey(s.PreviewImageBlobId))
.Select(s => GetHtmlPreviewImageFromHtmlBlob(s, blobsById))
.ToDictionary(i => i.BlobSetId, i => i);
return(previewImagesByHtmlBlobId);
}
