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Add support for multiple Link as urls of Images in ActivityPub\Receiver 

- Address https://github.com/friendica/friendica/issues/8676#issuecomment-650554955
This commit is contained in:
Hypolite Petovan 2020-07-20 00:26:42 -04:00
parent 664b7c5df2
commit 05bd0d0b67
1 changed files with 57 additions and 1 deletions
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58
src/Protocol/ActivityPub/Receiver.php
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@ -877,7 +877,7 @@ class Receiver
*
* @param array $attachments Attachments in JSON-LD format
*
* @return array with attachmants in a simplified format
* @return array Attachments in a simplified format
*/
private static function processAttachments(array $attachments)
{
@ -925,6 +925,62 @@ class Receiver
'url' => JsonLD::fetchElement($attachment, 'as:href', '@id')
];
break;
case 'as:Image':
$mediaType = JsonLD::fetchElement($attachment, 'as:mediaType', '@value');
$imageFullUrl = JsonLD::fetchElement($attachment, 'as:url', '@id');
$imagePreviewUrl = null;
// Multiple URLs?
if (!$imageFullUrl && ($urls = JsonLD::fetchElementArray($attachment, 'as:url'))) {
$imageVariants = [];
$previewVariants = [];
foreach ($urls as $url) {
// Scalar URL, no discrimination possible
if (is_string($url)) {
$imageFullUrl = $url;
continue;
}
// Not sure what to do with a different Link media type than the base Image, we skip
if ($mediaType != JsonLD::fetchElement($url, 'as:mediaType', '@value')) {
continue;
}
$href = JsonLD::fetchElement($url, 'as:href', '@id');
// Default URL choice if no discriminating width is provided
$imageFullUrl = $href ?? $imageFullUrl;
$width = intval(JsonLD::fetchElement($url, 'as:width', '@value') ?? 1);
if ($href && $width) {
$imageVariants[$width] = $href;
// 632 is the ideal width for full screen frio posts, we compute the absolute distance to it
$previewVariants[abs(632 - $width)] = $href;
}
}
if ($imageVariants) {
// Taking the maximum size image
ksort($imageVariants);
$imageFullUrl = array_pop($imageVariants);
// Taking the minimum number distance to the target distance
ksort($previewVariants);
$imagePreviewUrl = array_shift($previewVariants);
}
unset($imageVariants);
unset($previewVariants);
}
$attachlist[] = [
'type' => str_replace('as:', '', JsonLD::fetchElement($attachment, '@type')),
'mediaType' => $mediaType,
'name' => JsonLD::fetchElement($attachment, 'as:name', '@value'),
'url' => $imageFullUrl,
'image' => $imagePreviewUrl !== $imageFullUrl ? $imagePreviewUrl : null,
];
break;
default:
$attachlist[] = [
'type' => str_replace('as:', '', JsonLD::fetchElement($attachment, '@type')),