From c81b2c0a1d55b9eeaca613323e692701cd969ea7 Mon Sep 17 00:00:00 2001
From: enes <enes@nostrdev.com>
Date: Wed, 6 Nov 2024 13:12:19 +0100
Subject: [PATCH] refactor(home): fetch latest blogs in parallel w/ nsfw filter

---
 src/pages/home.tsx | 50 ++++++++++++++++++++++++++++++++++++----------
 1 file changed, 39 insertions(+), 11 deletions(-)

diff --git a/src/pages/home.tsx b/src/pages/home.tsx
index 3346d7e..5532e22 100644
--- a/src/pages/home.tsx
+++ b/src/pages/home.tsx
@@ -10,13 +10,15 @@ import { LANDING_PAGE_DATA } from '../constants'
 import {
   useDidMount,
   useGames,
+  useLocalStorage,
   useMuteLists,
   useNDKContext,
   useNSFWList
 } from '../hooks'
 import { appRoutes, getModPageRoute } from '../routes'
-import { BlogCardDetails, ModDetails } from '../types'
+import { BlogCardDetails, ModDetails, NSFWFilter, SortBy } from '../types'
 import {
+  extractBlogCardDetails,
   extractModData,
   handleModImageError,
   log,
@@ -29,11 +31,14 @@ import '../styles/SimpleSlider.css'
 import '../styles/styles.css'
 
 // Import Swiper styles
-import { filterForEventsTaggingId, NDKFilter } from '@nostr-dev-kit/ndk'
+import {
+  filterForEventsTaggingId,
+  NDKEvent,
+  NDKFilter
+} from '@nostr-dev-kit/ndk'
 import 'swiper/css'
 import 'swiper/css/navigation'
 import 'swiper/css/pagination'
-import { extractBlogCardDetails } from 'utils/blog'
 
 export const HomePage = () => {
   const navigate = useNavigate()
@@ -317,13 +322,15 @@ const Spinner = () => {
 const DisplayLatestBlogs = () => {
   const [blogs, setBlogs] = useState<Partial<BlogCardDetails>[]>()
   const { fetchEvents } = useNDKContext()
-
+  const [filterOptions] = useLocalStorage('filter-blog-curated', {
+    sort: SortBy.Latest,
+    nsfw: NSFWFilter.Hide_NSFW
+  })
   useDidMount(() => {
     const fetchBlogs = async () => {
       try {
         // Show maximum of 4 blog posts
         // 2 should be featured and the most recent 2 from blog npubs
-
         // Populate the filter from known naddr (constants.ts)
         const filters: NDKFilter[] = []
         for (let i = 0; i < LANDING_PAGE_DATA.featuredBlogPosts.length; i++) {
@@ -350,25 +357,46 @@ const DisplayLatestBlogs = () => {
             '#a': []
           } as NDKFilter
         )
-        // Fetch featured blogs posts
-        const featuredBlogPosts = await fetchEvents(filter)
-
-        // Fetch latest blog npubs posts
+        // Prepare filter for the latest
         const blogNpubs = import.meta.env.VITE_BLOG_NPUBS.split(',')
         const blogHexkeys = blogNpubs
           .map(npubToHex)
           .filter((hexkey) => hexkey !== null)
 
         // We fetch 4 posts in case of duplicates (from featured)
-        const latestBlogPosts = await fetchEvents({
+        const latestFilter: NDKFilter = {
           authors: blogHexkeys,
           kinds: [kinds.LongFormArticle],
           limit: 4
+        }
+
+        // Filter by NSFW tag
+        // NSFWFilter.Show_NSFW -> filter not needed
+        // NSFWFilter.Only_NSFW -> true
+        // NSFWFilter.Hide_NSFW -> false
+        if (filterOptions.nsfw !== NSFWFilter.Show_NSFW) {
+          latestFilter['#nsfw'] = [
+            (filterOptions.nsfw === NSFWFilter.Only_NSFW).toString()
+          ]
+        }
+
+        const results = await Promise.allSettled([
+          fetchEvents(filter),
+          fetchEvents(latestFilter)
+        ])
+
+        const events: NDKEvent[] = []
+        // Get featured blogs posts result
+        results.forEach((r) => {
+          // Add events from both promises to the array
+          if (r.status === 'fulfilled' && r.value) {
+            events.push(...r.value)
+          }
         })
 
         // Remove duplicates
         const unique = Array.from(
-          [...featuredBlogPosts, ...latestBlogPosts]
+          events
             .reduce((map, obj) => {
               map.set(obj.id, obj)
               return map