From d33affda10e68a8a65518f6263b93ca19800ce1f Mon Sep 17 00:00:00 2001
From: Silberengel <silberengel7@protonmail.com>
Date: Wed, 29 Oct 2025 22:30:01 +0100
Subject: [PATCH] add books

---
 .../PublicationIndex/PublicationIndex.tsx     | 358 ++++++++++++++++++
 src/components/Note/index.tsx                 |   7 +-
 src/services/content-parser.service.ts        |  26 ++
 3 files changed, 390 insertions(+), 1 deletion(-)
 create mode 100644 src/components/Note/PublicationIndex/PublicationIndex.tsx

diff --git a/src/components/Note/PublicationIndex/PublicationIndex.tsx b/src/components/Note/PublicationIndex/PublicationIndex.tsx
new file mode 100644
index 0000000..21570a9
--- /dev/null
+++ b/src/components/Note/PublicationIndex/PublicationIndex.tsx
@@ -0,0 +1,358 @@
+import { ExtendedKind } from '@/constants'
+import { Event } from 'nostr-tools'
+import { useEffect, useMemo, useState } from 'react'
+import { cn } from '@/lib/utils'
+import AsciidocArticle from '../AsciidocArticle/AsciidocArticle'
+import { generateBech32IdFromATag } from '@/lib/tag'
+import client from '@/services/client.service'
+import logger from '@/lib/logger'
+
+interface PublicationReference {
+  coordinate: string
+  event?: Event
+  kind: number
+  pubkey: string
+  identifier: string
+  relay?: string
+  eventId?: string
+}
+
+interface ToCItem {
+  title: string
+  coordinate: string
+  event?: Event
+  kind: number
+  children?: ToCItem[]
+}
+
+interface PublicationMetadata {
+  title?: string
+  summary?: string
+  image?: string
+  author?: string
+  version?: string
+  type?: string
+  tags: string[]
+}
+
+export default function PublicationIndex({
+  event,
+  className
+}: {
+  event: Event
+  className?: string
+}) {
+  // Parse publication metadata from event tags
+  const metadata = useMemo<PublicationMetadata>(() => {
+    const meta: PublicationMetadata = { tags: [] }
+    
+    for (const [tagName, tagValue] of event.tags) {
+      if (tagName === 'title') {
+        meta.title = tagValue
+      } else if (tagName === 'summary') {
+        meta.summary = tagValue
+      } else if (tagName === 'image') {
+        meta.image = tagValue
+      } else if (tagName === 'author') {
+        meta.author = tagValue
+      } else if (tagName === 'version') {
+        meta.version = tagValue
+      } else if (tagName === 'type') {
+        meta.type = tagValue
+      } else if (tagName === 't' && tagValue) {
+        meta.tags.push(tagValue.toLowerCase())
+      }
+    }
+    
+    // Fallback title from d-tag if no title
+    if (!meta.title) {
+      meta.title = event.tags.find(tag => tag[0] === 'd')?.[1]
+    }
+    
+    return meta
+  }, [event])
+  const [references, setReferences] = useState<PublicationReference[]>([])
+  const [visitedIndices, setVisitedIndices] = useState<Set<string>>(new Set())
+  const [isLoading, setIsLoading] = useState(true)
+
+  // Build table of contents from references
+  const tableOfContents = useMemo<ToCItem[]>(() => {
+    const toc: ToCItem[] = []
+    
+    for (const ref of references) {
+      if (!ref.event) continue
+      
+      // Extract title from the event
+      const title = ref.event.tags.find(tag => tag[0] === 'title')?.[1] || 
+                    ref.event.tags.find(tag => tag[0] === 'd')?.[1] || 
+                    'Untitled'
+      
+      const tocItem: ToCItem = {
+        title,
+        coordinate: ref.coordinate,
+        event: ref.event,
+        kind: ref.kind
+      }
+      
+      // For nested 30040 publications, recursively get their ToC
+      if (ref.kind === ExtendedKind.PUBLICATION && ref.event) {
+        const nestedRefs: ToCItem[] = []
+        
+        // Parse nested references from this publication
+        for (const tag of ref.event.tags) {
+          if (tag[0] === 'a' && tag[1]) {
+            const [kindStr, , identifier] = tag[1].split(':')
+            const kind = parseInt(kindStr)
+            
+            if (!isNaN(kind) && kind === ExtendedKind.PUBLICATION_CONTENT || 
+                kind === ExtendedKind.WIKI_ARTICLE || 
+                kind === ExtendedKind.PUBLICATION) {
+              // For this simplified version, we'll just extract the title from the coordinate
+              const nestedTitle = identifier || 'Untitled'
+              
+              nestedRefs.push({
+                title: nestedTitle,
+                coordinate: tag[1],
+                kind
+              })
+            }
+          }
+        }
+        
+        if (nestedRefs.length > 0) {
+          tocItem.children = nestedRefs
+        }
+      }
+      
+      toc.push(tocItem)
+    }
+    
+    return toc
+  }, [references])
+
+  // Scroll to section
+  const scrollToSection = (coordinate: string) => {
+    const element = document.getElementById(`section-${coordinate.replace(/:/g, '-')}`)
+    if (element) {
+      element.scrollIntoView({ behavior: 'smooth', block: 'start' })
+    }
+  }
+
+  // Extract references from 'a' tags
+  const referencesData = useMemo(() => {
+    const refs: PublicationReference[] = []
+    for (const tag of event.tags) {
+      if (tag[0] === 'a' && tag[1]) {
+        const [kindStr, pubkey, identifier] = tag[1].split(':')
+        const kind = parseInt(kindStr)
+        if (!isNaN(kind)) {
+          refs.push({
+            coordinate: tag[1],
+            kind,
+            pubkey,
+            identifier: identifier || '',
+            relay: tag[2],
+            eventId: tag[3] // Optional event ID for version tracking
+          })
+        }
+      }
+    }
+    return refs
+  }, [event])
+
+  // Add current event to visited set
+  const currentCoordinate = useMemo(() => {
+    const dTag = event.tags.find(tag => tag[0] === 'd')?.[1] || ''
+    return `${event.kind}:${event.pubkey}:${dTag}`
+  }, [event])
+
+  useEffect(() => {
+    setVisitedIndices(prev => new Set([...prev, currentCoordinate]))
+  }, [currentCoordinate])
+
+  // Fetch referenced events
+  useEffect(() => {
+    const fetchReferences = async () => {
+      setIsLoading(true)
+      const fetchedRefs: PublicationReference[] = []
+      
+      for (const ref of referencesData) {
+        // Skip if this is a 30040 event we've already visited (prevent circular references)
+        if (ref.kind === ExtendedKind.PUBLICATION) {
+          if (visitedIndices.has(ref.coordinate)) {
+            logger.debug('[PublicationIndex] Skipping visited 30040 index:', ref.coordinate)
+            fetchedRefs.push({ ...ref, event: undefined })
+            continue
+          }
+        }
+
+        try {
+          // Generate bech32 ID from the 'a' tag
+          const aTag = ['a', ref.coordinate, ref.relay || '', ref.eventId || '']
+          const bech32Id = generateBech32IdFromATag(aTag)
+          
+          if (bech32Id) {
+            const fetchedEvent = await client.fetchEvent(bech32Id)
+            if (fetchedEvent) {
+              fetchedRefs.push({ ...ref, event: fetchedEvent })
+            } else {
+              logger.warn('[PublicationIndex] Could not fetch event for:', ref.coordinate)
+              fetchedRefs.push({ ...ref, event: undefined })
+            }
+          } else {
+            logger.warn('[PublicationIndex] Could not generate bech32 ID for:', ref.coordinate)
+            fetchedRefs.push({ ...ref, event: undefined })
+          }
+        } catch (error) {
+          logger.error('[PublicationIndex] Error fetching reference:', error)
+          fetchedRefs.push({ ...ref, event: undefined })
+        }
+      }
+      
+      setReferences(fetchedRefs)
+      setIsLoading(false)
+    }
+
+    if (referencesData.length > 0) {
+      fetchReferences()
+    } else {
+      setIsLoading(false)
+    }
+  }, [referencesData, visitedIndices])
+
+  return (
+    <div className={cn('space-y-6', className)}>
+      {/* Publication Metadata */}
+      <div className="prose prose-zinc max-w-none dark:prose-invert">
+        <header className="mb-8 border-b pb-6">
+          <h1 className="text-4xl font-bold mb-4 leading-tight break-words">{metadata.title}</h1>
+          {metadata.summary && (
+            <blockquote className="border-l-4 border-primary pl-6 italic text-muted-foreground mb-4 text-lg leading-relaxed">
+              <p className="break-words">{metadata.summary}</p>
+            </blockquote>
+          )}
+          <div className="text-sm text-muted-foreground space-y-1">
+            {metadata.author && (
+              <div>
+                <span className="font-semibold">Author:</span> {metadata.author}
+              </div>
+            )}
+            {metadata.version && (
+              <div>
+                <span className="font-semibold">Version:</span> {metadata.version}
+              </div>
+            )}
+            {metadata.type && (
+              <div>
+                <span className="font-semibold">Type:</span> {metadata.type}
+              </div>
+            )}
+          </div>
+        </header>
+      </div>
+
+      {/* Table of Contents */}
+      {!isLoading && tableOfContents.length > 0 && (
+        <div className="border rounded-lg p-6 bg-muted/30">
+          <h2 className="text-xl font-semibold mb-4">Table of Contents</h2>
+          <nav>
+            <ul className="space-y-2">
+              {tableOfContents.map((item, index) => (
+                <ToCItemComponent 
+                  key={index} 
+                  item={item} 
+                  onItemClick={scrollToSection}
+                  level={0}
+                />
+              ))}
+            </ul>
+          </nav>
+        </div>
+      )}
+
+      {/* Content - render referenced events */}
+      {isLoading ? (
+        <div className="text-muted-foreground">Loading publication content...</div>
+      ) : (
+        <div className="space-y-8">
+          {references.map((ref, index) => {
+            if (!ref.event) {
+              return (
+                <div key={index} className="p-4 border rounded-lg bg-muted/50">
+                  <div className="text-sm text-muted-foreground">
+                    Reference {index + 1}: Unable to load event from coordinate {ref.coordinate}
+                  </div>
+                </div>
+              )
+            }
+
+            // Render based on event kind
+            const sectionId = `section-${ref.coordinate.replace(/:/g, '-')}`
+            
+            if (ref.kind === ExtendedKind.PUBLICATION) {
+              // Recursively render nested 30040 publication index
+              return (
+                <div key={index} id={sectionId} className="border-l-4 border-primary pl-6 scroll-mt-4">
+                  <PublicationIndex event={ref.event} />
+                </div>
+              )
+            } else if (ref.kind === ExtendedKind.PUBLICATION_CONTENT || ref.kind === ExtendedKind.WIKI_ARTICLE) {
+              // Render 30041 or 30818 content as AsciidocArticle
+              return (
+                <div key={index} id={sectionId} className="scroll-mt-4">
+                  <AsciidocArticle event={ref.event} />
+                </div>
+              )
+            } else {
+              // Fallback for other kinds - just show a placeholder
+              return (
+                <div key={index} className="p-4 border rounded-lg">
+                  <div className="text-sm text-muted-foreground">
+                    Reference {index + 1}: Unsupported kind {ref.kind}
+                  </div>
+                </div>
+              )
+            }
+          })}
+        </div>
+      )}
+    </div>
+  )
+}
+
+// ToC Item Component - renders nested table of contents items
+function ToCItemComponent({
+  item,
+  onItemClick,
+  level
+}: {
+  item: ToCItem
+  onItemClick: (coordinate: string) => void
+  level: number
+}) {
+  const indentClass = level > 0 ? `ml-${level * 4}` : ''
+  
+  return (
+    <li className={cn('list-none', indentClass)}>
+      <button
+        onClick={() => onItemClick(item.coordinate)}
+        className="text-left text-blue-600 dark:text-blue-400 hover:text-blue-800 dark:hover:text-blue-300 hover:underline cursor-pointer"
+      >
+        {item.title}
+      </button>
+      {item.children && item.children.length > 0 && (
+        <ul className="mt-2 space-y-1">
+          {item.children.map((child, childIndex) => (
+            <ToCItemComponent
+              key={childIndex}
+              item={child}
+              onItemClick={onItemClick}
+              level={level + 1}
+            />
+          ))}
+        </ul>
+      )}
+    </li>
+  )
+}
+
diff --git a/src/components/Note/index.tsx b/src/components/Note/index.tsx
index f4587d1..1d320df 100644
--- a/src/components/Note/index.tsx
+++ b/src/components/Note/index.tsx
@@ -30,6 +30,7 @@ import LongFormArticlePreview from './LongFormArticlePreview'
 import MarkdownArticle from './MarkdownArticle/MarkdownArticle'
 import AsciidocArticle from './AsciidocArticle/AsciidocArticle'
 import PublicationCard from './PublicationCard'
+import PublicationIndex from './PublicationIndex/PublicationIndex'
 import WikiCard from './WikiCard'
 import MutedNote from './MutedNote'
 import NsfwNote from './NsfwNote'
@@ -106,7 +107,11 @@ export default function Note({
       <WikiCard className="mt-2" event={event} />
     )
   } else if (event.kind === ExtendedKind.PUBLICATION) {
-    content = <PublicationCard className="mt-2" event={event} />
+    content = showFull ? (
+      <PublicationIndex className="mt-2" event={event} />
+    ) : (
+      <PublicationCard className="mt-2" event={event} />
+    )
   } else if (event.kind === ExtendedKind.PUBLICATION_CONTENT) {
     content = showFull ? (
       <AsciidocArticle className="mt-2" event={event} />
diff --git a/src/services/content-parser.service.ts b/src/services/content-parser.service.ts
index 4bd4dad..232f07b 100644
--- a/src/services/content-parser.service.ts
+++ b/src/services/content-parser.service.ts
@@ -211,6 +211,9 @@ class ContentParserService {
     // Process nostr: addresses - convert them to proper AsciiDoc format
     result = this.processNostrAddresses(result)
     
+    // Process hashtags - convert them to proper AsciiDoc format
+    result = this.processHashtags(result)
+    
     // Debug: log the converted AsciiDoc for troubleshooting
     if (process.env.NODE_ENV === 'development') {
       console.log('Converted AsciiDoc:', result)
@@ -451,6 +454,24 @@ class ContentParserService {
     return processed
   }
 
+  /**
+   * Process hashtags in content
+   */
+  private processHashtags(content: string): string {
+    let processed = content
+
+    // Convert hashtags to AsciiDoc link format: #hashtag -> hashtag:tag[#tag]
+    // This regex matches # followed by word characters, avoiding those in URLs, code blocks, etc.
+    // Using word boundary approach to avoid matching # in URLs
+    processed = processed.replace(/\B#([a-zA-Z0-9_]+)/g, (_match, hashtag) => {
+      // Normalize hashtag to lowercase for consistency
+      const normalizedHashtag = hashtag.toLowerCase()
+      return `hashtag:${normalizedHashtag}[#${hashtag}]`
+    })
+
+    return processed
+  }
+
   /**
    * Process wikilinks in content (both standard and bookstr macro)
    */
@@ -493,6 +514,11 @@ class ContentParserService {
   private processWikilinksInHtml(html: string): string {
     let processed = html
     
+    // Convert hashtag links to HTML with green styling
+    processed = processed.replace(/hashtag:([^[]+)\[([^\]]+)\]/g, (_match, normalizedHashtag, displayText) => {
+      return `<a href="/notes?t=${normalizedHashtag}" class="hashtag-link text-green-600 dark:text-green-400 hover:text-green-700 dark:hover:text-green-300 hover:underline">${displayText}</a>`
+    })
+    
     // Convert wikilink:dtag[display] format to HTML with data attributes
     processed = processed.replace(/wikilink:([^[]+)\[([^\]]+)\]/g, (_match, dTag, displayText) => {
       return `<span class="wikilink cursor-pointer text-blue-600 hover:text-blue-800 hover:underline border-b border-dotted border-blue-300" data-dtag="${dTag}" data-display="${displayText}">${displayText}</span>`