From bcf2b9a5f19cd8c3a707da2d5fc51534a268bf4b Mon Sep 17 00:00:00 2001
From: Gordon Pedersen <death.au@death.id.au>
Date: Thu, 23 May 2024 10:50:23 +1000
Subject: [PATCH] changes to mentions

---
 src/worker.js | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/src/worker.js b/src/worker.js
index 4f1d953..1dc7d82 100644
--- a/src/worker.js
+++ b/src/worker.js
@@ -99,10 +99,10 @@ async function handleLol(body, env) {
     tags:[]
   }
   // this is the content
-  let content = status.content
+  let content = /**/status.content/*/body.status_text//*/// can switch for testing
 
   // let's get funky with the hashtags
-  content.match(/#\w+/g).filter((v,i,a) => a.indexOf(v) === i).forEach(hashtag => {
+  content.match(/#\w+/g)?.filter((v,i,a) => a.indexOf(v) === i)?.forEach(hashtag => {
     const tag = hashtag.substring(1)
     const nonPascal = tag.replace(/([a-z])([A-Z])/g, "$1 $2")
     const kebab = tag.replace(/([a-z])([A-Z])/g, "$1-$2").toLowerCase()
@@ -110,6 +110,25 @@ async function handleLol(body, env) {
     content = content.replaceAll(hashtag, `[${hashtag}](/tag/${kebab}){.tag}`)
   })
 
+  // and similarly with fediverse mentions
+  const mentions = content.match(/@[\w\-]+@[\w\-]+\.\S+/)?.filter((v,i,a) => a.indexOf(v) === i)
+  console.log(mentions)
+  for(let mention of mentions) {
+    try{
+      const handle = mention.substring(1)
+      const domain = handle.substring(handle.indexOf('@') + 1)
+      const webfinger = await (await fetch(`https://${domain}/.well-known/webfinger?resource=acct:${handle}`)).json()
+      if(webfinger) {
+        const link = webfinger.links?.find(l => l.rel == "http://webfinger.net/rel/profile-page")?.href
+                  || webfinger.links?.find(l => l.rel == "me" || l.rel == "self")?.href
+                  || webfinger.aliases && webfinger.aliases.length > 0 ? webfinger.aliases[0] : undefined
+
+        if(link) content = content.replaceAll(mention, `[${mention}](${link}){.mention}`)
+      }
+    }
+    catch(err) { console.error(err) }
+  }
+
   const yamlOptions = {
     collectionStyle: 'flow',
     simpleKeys: true