Add ThreadView component and enhance EventFeed interactivity

- Introduced `ThreadView` for displaying note threads with smooth scroll-to-focus functionality. - Enhanced `EventFeed` to support user-specific `follows` feed using `userPubkey`. - Updated `mediaUtils` to linkify note content dynamically and provide click handlers. - Refactored router to incorporate `ThreadView` in the right panel and streamline note interactions. - Added methods in `nostrService` for fetching replies and user follow lists.
2025-10-03 14:44:38 +01:00
parent 42b3e65313
commit d22f8dfec4
5 changed files with 301 additions and 15 deletions
--- a/src/components/EventFeed.tsx
+++ b/src/components/EventFeed.tsx
@@ -6,9 +6,10 @@ import NoteCard from './NoteCard'
 interface EventFeedProps {
  feedType: 'global' | 'follows' | 'note' | 'hashtag' | 'user' | 'relay'
  onNoteClick?: (event: NostrEvent, metadata?: UserMetadata | null) => void
+  userPubkey?: string | null
 }

-const EventFeed: React.FC<EventFeedProps> = ({ feedType, onNoteClick }) => {
+const EventFeed: React.FC<EventFeedProps> = ({ feedType, onNoteClick, userPubkey }) => {
  const [userMetadataCache, setUserMetadataCache] = useState<Map<string, UserMetadata | null>>(new Map())
  const loadingRef = useRef<HTMLDivElement>(null)

@@ -31,9 +32,14 @@ const EventFeed: React.FC<EventFeedProps> = ({ feedType, onNoteClick }) => {

      // Add feed-specific filters
      if (feedType === 'follows') {
-        // For follows feed, you would typically filter by followed pubkeys
-        // This is a placeholder - implement based on your follow list logic
-        fetchParams.authors = [] // Add followed pubkey list here
+        // For follows feed, fetch the user's follow list first
+        if (userPubkey) {
+          const followedPubkeys = await nostrService.fetchFollowList(userPubkey)
+          fetchParams.authors = followedPubkeys
+        } else {
+          // If no user is logged in, return empty results
+          return []
+        }
      } else if (feedType === 'note') {
        // Filter for text notes only (kind 1)
        fetchParams.kinds = [1]
--- a/src/components/ThreadView.tsx
+++ b/src/components/ThreadView.tsx
@@ -0,0 +1,212 @@
+import React, { useState, useEffect, useRef } from 'react'
+import { NostrEvent, UserMetadata, nostrService } from '../lib/nostr'
+import NoteCard from './NoteCard'
+
+interface ThreadViewProps {
+  focusedEvent: NostrEvent
+  focusedEventMetadata?: UserMetadata | null
+  onNoteClick?: (event: NostrEvent, metadata?: UserMetadata | null) => void
+}
+
+const ThreadView: React.FC<ThreadViewProps> = ({ 
+  focusedEvent, 
+  focusedEventMetadata, 
+  onNoteClick 
+}) => {
+  const [threadEvents, setThreadEvents] = useState<NostrEvent[]>([])
+  const [eventMetadata, setEventMetadata] = useState<Record<string, UserMetadata | null>>({})
+  const [loading, setLoading] = useState(true)
+  const [focusedEventId, setFocusedEventId] = useState(focusedEvent.id)
+  const containerRef = useRef<HTMLDivElement>(null)
+  const focusedNoteRefs = useRef<Record<string, HTMLDivElement | null>>({})
+
+  // Update focused event when prop changes
+  useEffect(() => {
+    setFocusedEventId(focusedEvent.id)
+  }, [focusedEvent.id])
+
+  // Scroll focused note to center when it changes or thread loads
+  useEffect(() => {
+    if (!loading && focusedEventId && threadEvents.length > 0) {
+      const focusedElement = focusedNoteRefs.current[focusedEventId]
+      const container = containerRef.current?.closest('.pane') as HTMLElement // Find the scrollable parent
+
+      if (focusedElement && container) {
+        // Use setTimeout to ensure DOM is fully rendered
+        setTimeout(() => {
+          const containerRect = container.getBoundingClientRect()
+          const elementRect = focusedElement.getBoundingClientRect()
+          
+          // Calculate the position to center the element vertically
+          const containerCenter = containerRect.height / 2
+          const elementCenter = elementRect.height / 2
+          const scrollTop = container.scrollTop + elementRect.top - containerRect.top - containerCenter + elementCenter
+          
+          // Smooth scroll to center the focused note
+          container.scrollTo({
+            top: scrollTop,
+            behavior: 'smooth'
+          })
+        }, 100)
+      }
+    }
+  }, [focusedEventId, loading, threadEvents])
+
+  // Fetch thread and metadata
+  useEffect(() => {
+    const fetchThread = async () => {
+      setLoading(true)
+      try {
+        // Start with the focused event
+        const events = [focusedEvent]
+        const metadataMap: Record<string, UserMetadata | null> = {}
+        
+        // Add focused event metadata if provided
+        if (focusedEventMetadata) {
+          metadataMap[focusedEvent.pubkey] = focusedEventMetadata
+        }
+
+        // Find root event by following 'e' tags (replies)
+        let currentEvent = focusedEvent
+        const processedIds = new Set([focusedEvent.id])
+        
+        // Traverse up the thread to find parent events
+        while (currentEvent) {
+          const eTags = currentEvent.tags?.filter(tag => tag[0] === 'e') || []
+          if (eTags.length === 0) break
+          
+          // Get the parent event ID (usually the first 'e' tag or the one marked as 'reply')
+          let parentId = null
+          const replyTag = eTags.find(tag => tag[3] === 'reply')
+          if (replyTag) {
+            parentId = replyTag[1]
+          } else if (eTags.length > 0) {
+            parentId = eTags[0][1]
+          }
+          
+          if (!parentId || processedIds.has(parentId)) break
+          
+          try {
+            const parentEvent = await nostrService.fetchEventById(parentId)
+            if (parentEvent) {
+              events.unshift(parentEvent) // Add to beginning to maintain chronological order
+              processedIds.add(parentEvent.id)
+              currentEvent = parentEvent
+            } else {
+              break
+            }
+          } catch (error) {
+            console.warn('Failed to fetch parent event:', parentId, error)
+            break
+          }
+        }
+
+        // Find replies to events in the thread
+        for (const event of events) {
+          try {
+            const replies = await nostrService.fetchReplies(event.id)
+            for (const reply of replies) {
+              if (!processedIds.has(reply.id)) {
+                events.push(reply)
+                processedIds.add(reply.id)
+              }
+            }
+          } catch (error) {
+            console.warn('Failed to fetch replies for event:', event.id, error)
+          }
+        }
+
+        // Sort events chronologically
+        events.sort((a, b) => a.created_at - b.created_at)
+
+        // Fetch metadata for all unique pubkeys
+        const uniquePubkeys = [...new Set(events.map(event => event.pubkey))]
+        await Promise.all(
+          uniquePubkeys.map(async (pubkey) => {
+            if (!metadataMap[pubkey]) {
+              try {
+                const metadata = await nostrService.fetchUserMetadata(pubkey)
+                metadataMap[pubkey] = metadata
+              } catch (error) {
+                console.warn('Failed to fetch metadata for pubkey:', pubkey, error)
+                metadataMap[pubkey] = null
+              }
+            }
+          })
+        )
+
+        setThreadEvents(events)
+        setEventMetadata(metadataMap)
+      } catch (error) {
+        console.error('Failed to fetch thread:', error)
+        // Fallback to just the focused event
+        setThreadEvents([focusedEvent])
+        setEventMetadata(focusedEventMetadata ? { [focusedEvent.pubkey]: focusedEventMetadata } : {})
+      } finally {
+        setLoading(false)
+      }
+    }
+
+    fetchThread()
+  }, [focusedEvent, focusedEventMetadata])
+
+  // Handle note click to focus on clicked note
+  const handleThreadNoteClick = (event: NostrEvent, metadata?: UserMetadata | null) => {
+    setFocusedEventId(event.id)
+    onNoteClick?.(event, metadata)
+  }
+
+  if (loading) {
+    return (
+      <div className="h-full flex items-center justify-center">
+        <div className="text-center">
+          <div className="animate-pulse mb-2">Loading thread...</div>
+          <div className="text-sm text-gray-400">Fetching conversation</div>
+        </div>
+      </div>
+    )
+  }
+
+  return (
+    <div ref={containerRef} className="max-w-2xl mx-auto">
+      <div className="mb-4 px-4 py-2 text-sm text-gray-400 border-b border-gray-600">
+        <span>Thread • {threadEvents.length} {threadEvents.length === 1 ? 'note' : 'notes'}</span>
+      </div>
+      
+      {threadEvents.map((event, index) => {
+        const isFocused = event.id === focusedEventId
+        const isFirstFocused = isFocused && index === 0
+        const isLastFocused = isFocused && index === threadEvents.length - 1
+        
+        return (
+          <div 
+            key={event.id}
+            ref={(el) => {
+              if (isFocused) {
+                focusedNoteRefs.current[event.id] = el
+              }
+            }}
+            className={`
+              transition-all duration-200 
+              ${isFocused ? 'bg-blue-500/10 border-l-4 border-blue-500' : 'hover:bg-black/5'}
+              ${!isFirstFocused ? 'border-t border-gray-700/50' : ''}
+            `}
+          >
+            <NoteCard
+              event={event}
+              userMetadata={eventMetadata[event.pubkey]}
+              onNoteClick={handleThreadNoteClick}
+            />
+            
+            {/* Thread connection line for non-last items */}
+            {index < threadEvents.length - 1 && (
+              <div className="ml-8 border-l-2 border-gray-600/30 h-4 -mb-2"></div>
+            )}
+          </div>
+        )
+      })}
+    </div>
+  )
+}
+
+export default ThreadView
--- a/src/lib/nostr.ts
+++ b/src/lib/nostr.ts
@@ -204,6 +204,69 @@ class NostrService {
    }
  }

+  /**
+   * Fetch replies to a specific event
+   */
+  async fetchReplies(eventId: string): Promise<NostrEvent[]> {
+    try {
+      const filter: Filter = {
+        kinds: [1], // Text notes (replies)
+        '#e': [eventId], // Events that reference this event
+        limit: 100
+      }
+
+      const events = await this.pool.querySync(this.relays, filter)
+      const replies = events as NostrEvent[]
+      
+      // Cache the replies
+      if (replies.length > 0) {
+        await this.cacheEvents(replies)
+      }
+      
+      return replies
+    } catch (error) {
+      console.error('Failed to fetch replies:', error)
+      return []
+    }
+  }
+
+  /**
+   * Fetch follow list (kind 3) for a given pubkey
+   */
+  async fetchFollowList(pubkey: string): Promise<string[]> {
+    try {
+      const filter: Filter = {
+        kinds: [3], // Follow list
+        authors: [pubkey],
+        limit: 1
+      }
+
+      const events = await this.pool.querySync(this.relays, filter)
+      
+      if (events.length === 0) {
+        return []
+      }
+
+      // Get the most recent follow list event
+      const event = events[0]
+      
+      // Extract pubkeys from 'p' tags
+      const followedPubkeys: string[] = []
+      if (event.tags) {
+        for (const tag of event.tags) {
+          if (tag[0] === 'p' && tag[1]) {
+            followedPubkeys.push(tag[1])
+          }
+        }
+      }
+      
+      return followedPubkeys
+    } catch (error) {
+      console.error('Failed to fetch follow list:', error)
+      return []
+    }
+  }
+
  /**
   * Close all relay connections
   */
--- a/src/router.tsx
+++ b/src/router.tsx
@@ -10,6 +10,7 @@ import orlyImg from '../docs/orly.png'
 import { nostrService, UserMetadata, NostrEvent } from './lib/nostr'
 import EventFeed from './components/EventFeed'
 import NoteCard from './components/NoteCard'
+import ThreadView from './components/ThreadView'

 const clamp = (n: number, min: number, max: number) => Math.max(min, Math.min(max, n))

@@ -542,7 +543,7 @@ const HeaderRoute = createRootRoute({
          {/* Left: main */}
          <div className="pane overflow-y-scroll">
            {activeTab === 'Global' && <EventFeed feedType="global" onNoteClick={handleNoteClick} />}
-            {activeTab === 'Follows' && <EventFeed feedType="follows" onNoteClick={handleNoteClick} />}
+            {activeTab === 'Follows' && <EventFeed feedType="follows" onNoteClick={handleNoteClick} userPubkey={pubkey} />}
            {activeTab === 'Note' && <EventFeed feedType="note" onNoteClick={handleNoteClick} />}
            {activeTab === 'Hashtag' && <EventFeed feedType="hashtag" onNoteClick={handleNoteClick} />}
            {activeTab === 'User' && <EventFeed feedType="user" onNoteClick={handleNoteClick} />}
@@ -637,13 +638,11 @@ const HeaderRoute = createRootRoute({
          {/* Right: thread */}
          <div className="pane overflow-y-scroll bg-[#263238]">
            {selectedNote ? (
-              <div className="max-w-2xl mx-auto">
-                <NoteCard
-                  event={selectedNote}
-                  userMetadata={selectedNoteMetadata}
-                  onNoteClick={handleNoteClick}
-                />
-              </div>
+              <ThreadView
+                focusedEvent={selectedNote}
+                focusedEventMetadata={selectedNoteMetadata}
+                onNoteClick={handleNoteClick}
+              />
            ) : (
              <div className="h-full flex items-center justify-center">
                <span className="text-xl tracking-wide text-gray-400">Select a note to view thread</span>
--- a/src/utils/mediaUtils.ts
+++ b/src/utils/mediaUtils.ts
@@ -423,9 +423,15 @@ const EmbeddedNote: React.FC<{ reference: NostrReference; index: number }> = ({
      {
        className: 'text-sm text-gray-800 dark:text-gray-200 whitespace-pre-wrap break-words mb-3'
      },
-      noteEvent.content.length > 200 ? 
-        noteEvent.content.slice(0, 200) + '...' : 
-        noteEvent.content
+      ...linkifyContent(
+        noteEvent.content,
+        (url: string, type: MediaType) => {
+          console.log('Media clicked in embedded note:', url, type)
+        },
+        (reference: NostrReference) => {
+          console.log('Nostr reference clicked in embedded note:', reference)
+        }
+      )
    ),
    // Reaction buttons row
    React.createElement(