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fix: match syndication echoes by platform post ID, not exact URL

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Bluesky syndication URLs use the DID format (did:plc:...) while
Bridgy/webmention.io returns handle-based URLs (rmendes.net). Same post,
different URL. Extract the platform-specific post ID (rkey for Bluesky,
status ID for Mastodon) for comparison instead of exact string matching.
This commit is contained in:
Ricardo
2026-04-05 20:07:53 +02:00
parent b80d43facb
commit 6645a00418
1 changed files with 32 additions and 21 deletions
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js/webmentions.js
+32 -21
View File
@@ -225,21 +225,37 @@
const wmItems = [...(wmData1.children || []), ...(wmData2.children || [])];
const convItems = [...(convData1.children || []), ...(convData2.children || [])];
// Collect syndication URLs from owner-enriched replies (is_owner items).
// Collect post IDs from owner-enriched reply syndication URLs.
// When the owner replies from the frontend, Micropub creates the post
// and syndicates it (e.g., to Bluesky). The syndicated copy's URL
// (e.g., bsky.app/profile/.../post/...) is stored in the post's
// syndication property. Bridgy/webmention.io picks up that same URL
// and sends it back as a regular webmention. By collecting these
// syndication URLs, we can precisely match and suppress the echo
// without affecting direct platform replies that have no Micropub post.
// and syndicates it (e.g., to Bluesky). The syndicated URL is stored
// in the post's syndication property. Bridgy/webmention.io picks up
// the same post and sends it back as a webmention — but may use a
// different URL format (e.g., DID-based vs handle-based on Bluesky).
// We extract platform-specific post IDs to match regardless of format:
// - Bluesky: rkey from /post/<rkey> (same post, DID or handle URL)
// - Mastodon: status ID from /<digits> suffix
function extractPostId(url) {
if (!url) return null;
// Bluesky: bsky.app/profile/.../post/<rkey>
var bskyMatch = url.match(/bsky\.app\/profile\/[^/]+\/post\/([a-z0-9]+)/i);
if (bskyMatch) return 'bsky:' + bskyMatch[1];
// Mastodon: instance/@user/<digits>
var mastoMatch = url.match(/\/@[^/]+\/(\d+)/);
if (mastoMatch) return 'masto:' + mastoMatch[1];
return null;
}
var ownerReplyPostIds = new Set();
var ownerReplySyndicationUrls = new Set();
for (var k = 0; k < convItems.length; k++) {
var c = convItems[k];
if (c.is_owner && c.syndication) {
var syns = Array.isArray(c.syndication) ? c.syndication : [c.syndication];
for (var s = 0; s < syns.length; s++) {
if (syns[s]) ownerReplySyndicationUrls.add(syns[s].replace(/\/$/, '').toLowerCase());
if (syns[s]) {
ownerReplySyndicationUrls.add(syns[s].replace(/\/$/, '').toLowerCase());
var pid = extractPostId(syns[s]);
if (pid) ownerReplyPostIds.add(pid);
}
}
}
}
@@ -277,19 +293,14 @@
const action = wm['wm-property'] || 'mention';
if (authorUrl && authorActions.has(authorUrl + '::' + action)) continue;
// Skip webmention.io items that are syndicated echoes of owner replies.
// When the owner replies from the frontend, Micropub creates the post
// and syndicates it (e.g., to Bluesky at bsky.app/profile/.../post/xyz).
// The conversations API returns the reply as an is_owner enriched item
// with syndication: ["https://bsky.app/profile/.../post/xyz"].
// Bridgy/webmention.io also picks up that exact syndicated URL and
// sends it back as a regular webmention. By matching the webmention's
// source URL against known owner reply syndication URLs, we precisely
// filter the echo without affecting:
// - Direct platform replies (no Micropub post, no syndication URL match)
// - Owner likes/reposts from webmention.io
// - Owner replies on a different thread on the same page
if (wm.url && ownerReplySyndicationUrls.has(wm.url.replace(/\/$/, '').toLowerCase())) {
continue;
// Match by platform post ID (not exact URL) because Bluesky URLs can
// use either DID or handle for the same post. Also fall back to exact
// URL match for non-Bluesky/Mastodon platforms.
if (wm.url) {
var wmLower = wm.url.replace(/\/$/, '').toLowerCase();
if (ownerReplySyndicationUrls.has(wmLower)) continue;
var wmPostId = extractPostId(wm.url);
if (wmPostId && ownerReplyPostIds.has(wmPostId)) continue;
}
seen.add(key);
allChildren.push(wm);