fix(blogs): moderation and missing aTag

src/pages/blog/loader.ts

@@ -5,7 +5,12 @@ import { kinds, nip19 } from 'nostr-tools'
 import { LoaderFunctionArgs, redirect } from 'react-router-dom'
 import { appRoutes } from 'routes'
 import { store } from 'store'
-import { BlogPageLoaderResult, FilterOptions, NSFWFilter } from 'types'
+import {
+  BlogPageLoaderResult,
+  FilterOptions,
+  ModeratedFilter,
+  NSFWFilter
+} from 'types'
 import {
   DEFAULT_FILTER_OPTIONS,
   getLocalStorageItem,
@@ -59,11 +64,11 @@ export const blogRouteLoader =
         getLocalStorageItem('filter-blog', DEFAULT_FILTER_OPTIONS)
       ) as FilterOptions
 
-      // Fetch 4 in case the current blog is included in the latest
+      // Fetch more in case the current blog is included in the latest and filters remove some
       const latestFilter: NDKFilter = {
         authors: [pubkey],
         kinds: [kinds.LongFormArticle],
-        limit: 4
+        limit: PROFILE_BLOG_FILTER_LIMIT
       }
       // Add source filter
       if (filterOptions.source === window.location.host) {
@@ -75,12 +80,9 @@ export const blogRouteLoader =
       // NSFWFilter.Hide_NSFW -> up the limit and filter after fetch
       if (filterOptions.nsfw === NSFWFilter.Only_NSFW) {
         latestFilter['#L'] = ['content-warning']
-      } else if (filterOptions.nsfw === NSFWFilter.Hide_NSFW) {
-        // Up the limit in case we fetch multiple NSFW blogs
-        latestFilter.limit = PROFILE_BLOG_FILTER_LIMIT
       }
 
-      // Parallel fetch blog event, latest events, mute, and nsfw lists in parallel
+      // Parallel fetch blog event, latest events, mute, and nsfw lists
       const settled = await Promise.allSettled([
         ndkContext.fetchEvent(filter),
         ndkContext.fetchEvents(latestFilter),
@@ -121,10 +123,6 @@ export const blogRouteLoader =
         result.latest = fetchEventsResult.value
           .map(extractBlogCardDetails)
           .filter((b) => b.id !== result.blog?.id) // Filter out current blog if present
-          .filter(
-            (b) => !(b.nsfw && filterOptions.nsfw === NSFWFilter.Hide_NSFW)
-          ) // Filter out the NSFW if selected
-          .slice(0, 3) // Take only three
       } else if (fetchEventsResult.status === 'rejected') {
         log(
           true,
@@ -134,22 +132,48 @@ export const blogRouteLoader =
         )
       }
 
-      const muteList = settled[2]
-      if (muteList.status === 'fulfilled' && muteList.value) {
-        if (muteList && muteList.value) {
+      const muteLists = settled[2]
+      if (muteLists.status === 'fulfilled' && muteLists.value) {
+        if (muteLists && muteLists.value) {
           if (result.blog && result.blog.aTag) {
             if (
-              muteList.value.admin.replaceableEvents.includes(
+              muteLists.value.admin.replaceableEvents.includes(
                 result.blog.aTag
               ) ||
-              muteList.value.user.replaceableEvents.includes(result.blog.aTag)
+              muteLists.value.user.replaceableEvents.includes(result.blog.aTag)
             ) {
               result.isBlocked = true
             }
           }
+
+          // Moderate the latest
+          const isAdmin =
+            userState.user?.npub === import.meta.env.VITE_REPORTING_NPUB
+          const isOwner =
+            userState.user?.pubkey && userState.user.pubkey === pubkey
+          const isUnmoderatedFully =
+            filterOptions.moderated === ModeratedFilter.Unmoderated_Fully
+
+          // Only apply filtering if the user is not an admin or the admin has not selected "Unmoderated Fully"
+          // Allow "Unmoderated Fully" when author visits own profile
+          if (!((isAdmin || isOwner) && isUnmoderatedFully)) {
+            result.latest = result.latest.filter(
+              (b) =>
+                !muteLists.value.admin.authors.includes(b.author!) &&
+                !muteLists.value.admin.replaceableEvents.includes(b.aTag!)
+            )
+          }
+
+          if (filterOptions.moderated === ModeratedFilter.Moderated) {
+            result.latest = result.latest.filter(
+              (b) =>
+                !muteLists.value.user.authors.includes(b.author!) &&
+                !muteLists.value.user.replaceableEvents.includes(b.aTag!)
+            )
+          }
         }
-      } else if (muteList.status === 'rejected') {
-        log(true, LogType.Error, 'Issue fetching mute list', muteList.reason)
+      } else if (muteLists.status === 'rejected') {
+        log(true, LogType.Error, 'Issue fetching mute list', muteLists.reason)
       }
 
       const nsfwList = settled[3]
@@ -171,15 +195,14 @@ export const blogRouteLoader =
           }
         }
 
-        // Check if the the latest blogs too
+        // Check the latest blogs too
         result.latest = result.latest.map((b) => {
-          if (b) {
-            const isMissingNsfwTag =
-              !b.nsfw && b.aTag && nsfwList.value.includes(b.aTag)
+          // Add nsfw tag if it's missing
+          const isMissingNsfwTag =
+            !b.nsfw && b.aTag && nsfwList.value.includes(b.aTag)
 
-            if (isMissingNsfwTag) {
-              b.nsfw = true
-            }
+          if (isMissingNsfwTag) {
+            b.nsfw = true
           }
           return b
         })
@@ -187,6 +210,17 @@ export const blogRouteLoader =
         log(true, LogType.Error, 'Issue fetching nsfw list', nsfwList.reason)
       }
 
+      // Filter latest, sort and take only three
+      result.latest = result.latest
+        .filter(
+          // Filter out the NSFW if selected
+          (b) => !(b.nsfw && filterOptions.nsfw === NSFWFilter.Hide_NSFW)
+        )
+        .sort((a, b) =>
+          a.published_at && b.published_at ? b.published_at - a.published_at : 0
+        )
+        .slice(0, 3)
+
       return result
     } catch (error) {
       let message = 'An error occurred in fetching blog details from relays'

src/pages/blogs/loader.ts

@@ -1,6 +1,7 @@
 import { NDKFilter } from '@nostr-dev-kit/ndk'
 import { NDKContextType } from 'contexts/NDKContext'
 import { kinds } from 'nostr-tools'
+import { BlogCardDetails } from 'types'
 import { log, LogType, npubToHex } from 'utils'
 import { extractBlogCardDetails } from 'utils/blog'
 
@@ -15,14 +16,46 @@ export const blogsRouteLoader = (ndkContext: NDKContextType) => async () => {
       authors: blogHexkeys,
       kinds: [kinds.LongFormArticle]
     }
-    const events = await ndkContext.fetchEvents(filter)
 
-    if (!events) {
-      log(true, LogType.Error, 'Unable to fetch the blog events.')
-      return null
+    const settled = await Promise.allSettled([
+      ndkContext.fetchEvents(filter),
+      ndkContext.getMuteLists()
+    ])
+
+    let blogs: Partial<BlogCardDetails>[] = []
+    const fetchEventsResult = settled[0]
+    if (fetchEventsResult.status === 'fulfilled' && fetchEventsResult.value) {
+      // Extract the blog card details from the events
+      blogs = fetchEventsResult.value
+        .map(extractBlogCardDetails)
+        .filter((b) => b.naddr)
+    } else if (fetchEventsResult.status === 'rejected') {
+      log(
+        true,
+        LogType.Error,
+        'Unable to fetch the blog events.',
+        fetchEventsResult.reason
+      )
+      return []
     }
 
-    return events.map(extractBlogCardDetails).filter((e) => e.naddr)
+    const muteListResult = settled[1]
+    if (muteListResult.status === 'fulfilled' && muteListResult.value) {
+      // Filter out the blocked events
+      blogs = blogs.filter(
+        (b) =>
+          b.aTag &&
+          !muteListResult.value.admin.replaceableEvents.includes(b.aTag)
+      )
+    } else if (muteListResult.status === 'rejected') {
+      log(
+        true,
+        LogType.Error,
+        'Failed to fetch mutelists.',
+        muteListResult.reason
+      )
+    }
+    return blogs
   } catch (error) {
     log(
       true,
@@ -30,6 +63,6 @@ export const blogsRouteLoader = (ndkContext: NDKContextType) => async () => {
       'An error occurred in fetching blog details from relays',
       error
     )
-    return null
+    return []
   }
 }

src/utils/blog.ts

@@ -3,24 +3,36 @@ import { BlogCardDetails, BlogDetails } from 'types'
 import { getFirstTagValue, getFirstTagValueAsInt, getTagValues } from './nostr'
 import { kinds, nip19 } from 'nostr-tools'
 
-export const extractBlogDetails = (event: NDKEvent): Partial<BlogDetails> => ({
-  title: getFirstTagValue(event, 'title'),
-  content: event.content,
-  summary: getFirstTagValue(event, 'summary'),
-  image: getFirstTagValue(event, 'image'),
-  // Check L label namespace for content warning or nsfw (backwards compatibility)
-  nsfw:
-    getFirstTagValue(event, 'L') === 'content-warning' ||
-    getFirstTagValue(event, 'nsfw') === 'true',
-  id: event.id,
-  author: event.pubkey,
-  published_at: getFirstTagValueAsInt(event, 'published_at'),
-  edited_at: event.created_at,
-  rTag: getFirstTagValue(event, 'r') || 'N/A',
-  dTag: getFirstTagValue(event, 'd'),
-  aTag: getFirstTagValue(event, 'a'),
-  tTags: getTagValues(event, 't') || []
-})
+export const extractBlogDetails = (event: NDKEvent): Partial<BlogDetails> => {
+  const dTag = getFirstTagValue(event, 'd')
+
+  // Check if the aTag exists on the blog
+  let aTag = getFirstTagValue(event, 'a')
+
+  // Create aTag from components if aTag is not included
+  if (typeof aTag === 'undefined' && event.pubkey && dTag) {
+    aTag = `${kinds.LongFormArticle}:${event.pubkey}:${dTag}`
+  }
+
+  return {
+    title: getFirstTagValue(event, 'title'),
+    content: event.content,
+    summary: getFirstTagValue(event, 'summary'),
+    image: getFirstTagValue(event, 'image'),
+    // Check L label namespace for content warning or nsfw (backwards compatibility)
+    nsfw:
+      getFirstTagValue(event, 'L') === 'content-warning' ||
+      getFirstTagValue(event, 'nsfw') === 'true',
+    id: event.id,
+    author: event.pubkey,
+    published_at: getFirstTagValueAsInt(event, 'published_at'),
+    edited_at: event.created_at,
+    rTag: getFirstTagValue(event, 'r') || 'N/A',
+    dTag: dTag,
+    aTag: aTag,
+    tTags: getTagValues(event, 't') || []
+  }
+}
 
 export const extractBlogCardDetails = (
   event: NDKEvent