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Use backup thumbnails for link previews

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Pete Walters 2026-06-01 12:56:46 -05:00 committed by GitHub
parent c0cedd0026
commit dc3a819024
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GPG Key ID: B5690EEEBB952194
1 changed files with 42 additions and 32 deletions
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74
SignalUI/LinkPreview/LinkPreviewState.swift
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@ -271,7 +271,17 @@ public class LinkPreviewSent: LinkPreviewState {
guard let imageAttachment else {
return .none
}
guard let attachmentStream = imageAttachment.attachment.asStream() else {
if let attachmentStream = imageAttachment.attachment.asStream() {
switch attachmentStream.contentType {
case .image:
break
default:
return .invalid
}
return .loaded
} else if imageAttachment.asReferencedBackupThumbnail?.attachmentBackupThumbnail.image != nil {
return .loaded
} else {
if let blurHash = imageAttachment.attachment.blurHash {
if isFailedImageAttachmentDownload {
return .failed(blurHash: blurHash)
@ -282,13 +292,6 @@ public class LinkPreviewSent: LinkPreviewState {
return .none
}
}
switch attachmentStream.contentType {
case .image:
break
default:
return .invalid
}
return .loaded
}
public func imageAsync(thumbnailQuality: AttachmentThumbnailQuality, completion: @escaping (UIImage) -> Void) {
@ -305,34 +308,41 @@ public class LinkPreviewSent: LinkPreviewState {
completion(image)
}
case .loaded:
guard let attachmentStream = imageAttachment?.attachment.asStream() else {
owsFailDebug("Could not load image.")
return
}
DispatchQueue.global().async {
switch attachmentStream.contentType {
case .image:
guard let imageMetadata = attachmentStream.imageMetadata() else {
owsFailDebug("Failed to get image metadata")
if let attachmentStream = imageAttachment?.attachment.asStream() {
DispatchQueue.global().async {
switch attachmentStream.contentType {
case .image:
guard let imageMetadata = attachmentStream.imageMetadata() else {
owsFailDebug("Failed to get image metadata")
return
}
let image: UIImage?
if imageMetadata.isAnimated {
image = try? attachmentStream.decryptedSDAnimatedImage()
} else {
image = attachmentStream.thumbnailImageSync(quality: thumbnailQuality)
}
guard let image else {
owsFailDebug("Failed to load image")
return
}
completion(image)
case .file, .video, .audio:
owsFailDebug("Invalid image.")
return
}
let image: UIImage?
if imageMetadata.isAnimated {
image = try? attachmentStream.decryptedSDAnimatedImage()
} else {
image = attachmentStream.thumbnailImageSync(quality: thumbnailQuality)
}
guard let image else {
owsFailDebug("Failed to load image")
return
}
completion(image)
case .file, .video, .audio:
owsFailDebug("Invalid image.")
}
} else if let thumbnail = imageAttachment?.asReferencedBackupThumbnail {
guard let image = thumbnail.attachmentBackupThumbnail.image else {
owsFailDebug("Thumbnail missing image")
return
}
completion(image)
} else {
owsFailDebug("Could not load image.")
return
}
}
}