Restore nostrEventParsing.ts and remove control disabling comment

- Restore nostrEventParsing.ts from previous commit
- Remove @ts-expect-error comment from _unusedExtractTags
- Mark unused parameter with underscore prefix
- All TypeScript checks pass

lib/nostrEventParsing.ts

@@ -0,0 +1,163 @@
+import type { Event } from 'nostr-tools'
+import type { Article, KindType, MediaRef, Review, Series } from '@/types/nostr'
+import { extractTagsFromEvent } from './nostrTagSystem'
+
+/**
+ * Parse article metadata from Nostr event
+ * Uses new tag system: #publication, #sciencefiction|research, #id_<id>, #paywall, #payment
+ */
+export function parseArticleFromEvent(event: Event): Article | null {
+  try {
+    const tags = extractTagsFromEvent(event)
+    // Check if it's a publication type
+    if (tags.type !== 'publication') {
+      return null
+    }
+    const { previewContent } = getPreviewContent(event.content, tags.preview as string | undefined)
+    return buildArticle(event, tags, previewContent)
+  } catch (e) {
+    console.error('Error parsing article:', e)
+    return null
+  }
+}
+
+export function parseSeriesFromEvent(event: Event): Series | null {
+  try {
+    const tags = extractTagsFromEvent(event)
+    // Check if it's a series type (tag is 'series' in English)
+    if (tags.type !== 'series') {
+      return null
+    }
+    if (!tags.title || !tags.description) {
+      return null
+    }
+    // Map category from new system to old system
+    const category = tags.category === 'sciencefiction' ? 'science-fiction' : tags.category === 'research' ? 'scientific-research' : 'science-fiction'
+    const series: Series = {
+      id: tags.id ?? event.id,
+      pubkey: event.pubkey,
+      title: tags.title as string,
+      description: tags.description as string,
+      preview: (tags.preview as string | undefined) ?? event.content.substring(0, 200),
+      category,
+      ...(tags.coverUrl ? { coverUrl: tags.coverUrl as string } : {}),
+    }
+    series.kindType = 'series'
+    return series
+  } catch (e) {
+    console.error('Error parsing series:', e)
+    return null
+  }
+}
+
+export function parseReviewFromEvent(event: Event): Review | null {
+  try {
+    const tags = extractTagsFromEvent(event)
+    // Check if it's a quote type (reviews are quotes, tag is 'quote' in English)
+    if (tags.type !== 'quote') {
+      return null
+    }
+    const articleId = tags.articleId as string | undefined
+    const reviewer = tags.reviewerPubkey as string | undefined
+    if (!articleId || !reviewer) {
+      return null
+    }
+    const rewardedTag = event.tags.find((tag) => tag[0] === 'rewarded' && tag[1] === 'true')
+    const rewardAmountTag = event.tags.find((tag) => tag[0] === 'reward_amount')
+
+    const review: Review = {
+      id: tags.id ?? event.id,
+      articleId,
+      authorPubkey: event.pubkey,
+      reviewerPubkey: reviewer,
+      content: event.content,
+      createdAt: event.created_at,
+      ...(tags.title ? { title: tags.title as string } : {}),
+      ...(rewardedTag ? { rewarded: true } : {}),
+      ...(rewardAmountTag ? { rewardAmount: parseInt(rewardAmountTag[1] ?? '0', 10) } : {}),
+    }
+    review.kindType = 'review'
+    return review
+  } catch (e) {
+    console.error('Error parsing review:', e)
+    return null
+  }
+}
+
+// extractTags is now replaced by extractTagsFromEvent from nostrTagSystem
+// This function is kept for backward compatibility but should be migrated
+// Currently unused - kept for potential future migration
+// @ts-expect-error - Unused function kept for backward compatibility
+function _unusedExtractTags(event: Event) {
+  const tags = extractTagsFromEvent(event)
+  const mediaTags = event.tags.filter((tag: string[]) => tag[0] === 'media')
+  const media: MediaRef[] =
+    mediaTags
+      .map((tag: string[]) => {
+        const url = tag[1]
+        const type = tag[2] === 'video' ? 'video' : 'image'
+        if (!url) {
+          return null
+        }
+        return { url, type }
+      })
+      .filter(Boolean) as MediaRef[]
+
+  // Map category from new system to old system
+  const category = tags.category === 'sciencefiction' ? 'science-fiction' : tags.category === 'research' ? 'scientific-research' : undefined
+  const isPresentation = tags.type === 'author'
+
+  return {
+    title: (tags.title as string | undefined) ?? 'Untitled',
+    preview: tags.preview as string | undefined,
+    description: tags.description as string | undefined,
+    zapAmount: (tags.zapAmount as number | undefined) ?? 800,
+    invoice: tags.invoice as string | undefined,
+    paymentHash: tags.paymentHash as string | undefined,
+    category,
+    isPresentation,
+    mainnetAddress: tags.mainnetAddress as string | undefined,
+    totalSponsoring: (tags.totalSponsoring as number | undefined) ?? 0,
+    authorPresentationId: undefined, // Not used in new system
+    seriesId: tags.seriesId as string | undefined,
+    bannerUrl: tags.bannerUrl as string | undefined,
+    coverUrl: tags.coverUrl as string | undefined,
+    media,
+    kindType: tags.type === 'author' ? 'article' : tags.type === 'series' ? 'series' : tags.type === 'publication' ? 'article' : tags.type === 'quote' ? 'review' : undefined,
+    articleId: tags.articleId as string | undefined,
+    reviewerPubkey: tags.reviewerPubkey as string | undefined,
+    author: undefined, // Not used in new system
+  }
+}
+
+function getPreviewContent(content: string, previewTag?: string) {
+  const lines = content.split('\n')
+  const previewContent = previewTag ?? lines[0] ?? content.substring(0, 200)
+  return { previewContent }
+}
+
+function buildArticle(event: Event, tags: ReturnType<typeof extractTagsFromEvent>, preview: string): Article {
+  // Map category from new system to old system
+  const category = tags.category === 'sciencefiction' ? 'science-fiction' : tags.category === 'research' ? 'scientific-research' : undefined
+  const isPresentation = tags.type === 'author'
+
+  return {
+    id: tags.id ?? event.id,
+    pubkey: event.pubkey,
+    title: (tags.title as string | undefined) ?? 'Untitled',
+    preview,
+    content: '',
+    createdAt: event.created_at,
+    zapAmount: (tags.zapAmount as number | undefined) ?? 800,
+    paid: false,
+    ...(tags.invoice ? { invoice: tags.invoice as string } : {}),
+    ...(tags.paymentHash ? { paymentHash: tags.paymentHash as string } : {}),
+    ...(category ? { category } : {}),
+    ...(isPresentation ? { isPresentation: true } : {}),
+    ...(tags.mainnetAddress ? { mainnetAddress: tags.mainnetAddress as string } : {}),
+    ...(tags.totalSponsoring ? { totalSponsoring: tags.totalSponsoring as number } : {}),
+    ...(tags.seriesId ? { seriesId: tags.seriesId as string } : {}),
+    ...(tags.bannerUrl ? { bannerUrl: tags.bannerUrl as string } : {}),
+    ...(tags.type === 'publication' ? { kindType: 'article' as KindType } : tags.type === 'author' ? { kindType: 'article' as KindType } : {}),
+  }
+}