feat: support kind 20

src/lib/event.ts

@@ -1,6 +1,7 @@
+import { COMMENT_EVENT_KIND, PICTURE_EVENT_KIND } from '@/constants'
 import client from '@/services/client.service'
 import { Event, kinds, nip19 } from 'nostr-tools'
-import { isReplyETag, isRootETag, tagNameEquals } from './tag'
+import { extractImetaUrlFromTag, isReplyETag, isRootETag, tagNameEquals } from './tag'
 
 export function isNsfwEvent(event: Event) {
   return event.tags.some(
@@ -26,6 +27,14 @@ export function isReplyNoteEvent(event: Event) {
   return hasETag && !hasMarker
 }
 
+export function isCommentEvent(event: Event) {
+  return event.kind === COMMENT_EVENT_KIND
+}
+
+export function isPictureEvent(event: Event) {
+  return event.kind === PICTURE_EVENT_KIND
+}
+
 export function getParentEventId(event?: Event) {
   return event?.tags.find(isReplyETag)?.[1]
 }
@@ -116,6 +125,54 @@ export async function extractMentions(content: string, parentEvent?: Event) {
   }
 }
 
+export async function extractCommentMentions(content: string, parentEvent: Event) {
+  const pubkeySet = new Set<string>()
+  const quoteEventIdSet = new Set<string>()
+  const rootEventId = parentEvent.tags.find(tagNameEquals('E'))?.[1] ?? parentEvent.id
+  const rootEventKind = parentEvent.tags.find(tagNameEquals('K'))?.[1] ?? parentEvent.kind
+  const rootEventPubkey = parentEvent.tags.find(tagNameEquals('P'))?.[1] ?? parentEvent.pubkey
+  const parentEventId = parentEvent.id
+  const parentEventKind = parentEvent.kind
+  const parentEventPubkey = parentEvent.pubkey
+
+  const matches = content.match(
+    /nostr:(npub1[a-z0-9]{58}|nprofile1[a-z0-9]+|note1[a-z0-9]{58}|nevent1[a-z0-9]+)/g
+  )
+
+  for (const m of matches || []) {
+    try {
+      const id = m.split(':')[1]
+      const { type, data } = nip19.decode(id)
+      if (type === 'nprofile') {
+        pubkeySet.add(data.pubkey)
+      } else if (type === 'npub') {
+        pubkeySet.add(data)
+      } else if (['nevent', 'note', 'naddr'].includes(type)) {
+        const event = await client.fetchEvent(id)
+        if (event) {
+          pubkeySet.add(event.pubkey)
+          quoteEventIdSet.add(event.id)
+        }
+      }
+    } catch (e) {
+      console.error(e)
+    }
+  }
+
+  pubkeySet.add(parentEvent.pubkey)
+
+  return {
+    pubkeys: Array.from(pubkeySet),
+    quoteEventIds: Array.from(quoteEventIdSet),
+    rootEventId,
+    rootEventKind,
+    rootEventPubkey,
+    parentEventId,
+    parentEventKind,
+    parentEventPubkey
+  }
+}
+
 export function extractHashtags(content: string) {
   const hashtags: string[] = []
   const matches = content.match(/#[\p{L}\p{N}\p{M}]+/gu)
@@ -127,3 +184,22 @@ export function extractHashtags(content: string) {
   })
   return hashtags
 }
+
+export function extractFirstPictureFromPictureEvent(event: Event) {
+  if (!isPictureEvent(event)) return null
+  for (const tag of event.tags) {
+    const url = extractImetaUrlFromTag(tag)
+    if (url) return url
+  }
+  return null
+}
+
+export function extractImagesFromContent(content: string) {
+  const images = content.match(/https?:\/\/[^\s"']+\.(jpg|jpeg|png|gif|webp|heic)/gi)
+  let contentWithoutImages = content
+  images?.forEach((url) => {
+    contentWithoutImages = contentWithoutImages.replace(url, '').trim()
+  })
+  contentWithoutImages = contentWithoutImages.replace(/\n{3,}/g, '\n\n').trim()
+  return { images, contentWithoutImages }
+}