From 79660f63ece95897f3545a73a77fc4938028e17f Mon Sep 17 00:00:00 2001
From: en <enes@nostrdev.com>
Date: Wed, 19 Feb 2025 14:06:04 +0100
Subject: [PATCH] feat(notes): add repost filter

---
 src/components/Filters/FeedFilter.tsx | 23 ++++++++++++++++++++++-
 src/pages/feed/FeedTabPosts.tsx       | 25 +++++++++++++++++++++----
 src/types/modsFilter.ts               |  2 +-
 3 files changed, 44 insertions(+), 6 deletions(-)

diff --git a/src/components/Filters/FeedFilter.tsx b/src/components/Filters/FeedFilter.tsx
index e3718a4..655d039 100644
--- a/src/components/Filters/FeedFilter.tsx
+++ b/src/components/Filters/FeedFilter.tsx
@@ -1,7 +1,7 @@
 import React from 'react'
 import { PropsWithChildren } from 'react'
 import { Filter } from '.'
-import { FilterOptions, SortBy } from 'types'
+import { FilterOptions, RepostFilter, SortBy } from 'types'
 import { Dropdown } from './Dropdown'
 import { Option } from './Option'
 import { DEFAULT_FILTER_OPTIONS } from 'utils'
@@ -86,6 +86,27 @@ export const FeedFilter = React.memo(
           </Dropdown>
         )}
 
+        {/* Repost filter */}
+        {tab === 2 && (
+          <Dropdown label={filterOptions.repost}>
+            {Object.values(RepostFilter).map((item, index) =>
+              item === RepostFilter.Only_Repost ? null : (
+                <Option
+                  key={`repost-${index}`}
+                  onClick={() =>
+                    setFilterOptions((prev) => ({
+                      ...prev,
+                      repost: item
+                    }))
+                  }
+                >
+                  {item}
+                </Option>
+              )
+            )}
+          </Dropdown>
+        )}
+
         {children}
       </Filter>
     )
diff --git a/src/pages/feed/FeedTabPosts.tsx b/src/pages/feed/FeedTabPosts.tsx
index 4fd7e40..74008a8 100644
--- a/src/pages/feed/FeedTabPosts.tsx
+++ b/src/pages/feed/FeedTabPosts.tsx
@@ -1,6 +1,6 @@
 import { useLoaderData } from 'react-router-dom'
 import { FeedPageLoaderResult } from './loader'
-import { useAppSelector, useNDKContext } from 'hooks'
+import { useAppSelector, useLocalStorage, useNDKContext } from 'hooks'
 import { useEffect, useMemo, useState } from 'react'
 import { LoadingSpinner } from 'components/LoadingSpinner'
 import {
@@ -11,6 +11,8 @@ import {
 } from '@nostr-dev-kit/ndk'
 import { NoteSubmit } from 'components/Notes/NoteSubmit'
 import { Note } from 'components/Notes/Note'
+import { FeedPostsFilter, RepostFilter } from 'types'
+import { DEFAULT_FILTER_OPTIONS } from 'utils'
 
 export const FeedTabPosts = () => {
   const SHOWING_STEP = 20
@@ -24,6 +26,12 @@ export const FeedTabPosts = () => {
   const [isLoadMoreVisible, setIsLoadMoreVisible] = useState(true)
   const [showing, setShowing] = useState(SHOWING_STEP)
 
+  const filterKey = 'filter-feed-2'
+  const [filterOptions] = useLocalStorage<FeedPostsFilter>(
+    filterKey,
+    DEFAULT_FILTER_OPTIONS
+  )
+
   useEffect(() => {
     if (!userPubkey) return
 
@@ -65,14 +73,23 @@ export const FeedTabPosts = () => {
     //     )
     // )
 
-    // Filter reply events
-    _notes = _notes.filter((n) => n.getMatchingTags('e').length === 0)
+    _notes = _notes.filter((n) => {
+      if (n.kind === NDKKind.Text) {
+        // Filter out the replies (Kind 1 events with e tags are replies to other kind 1 events)
+        return n.getMatchingTags('e').length === 0
+      }
+      // Filter repost events if the option is set to hide reposts
+      return !(
+        n.kind === NDKKind.Repost &&
+        filterOptions.repost === RepostFilter.Hide_Repost
+      )
+    })
 
     _notes = _notes.sort((a, b) => (b.created_at ?? 0) - (a.created_at ?? 0))
 
     showing > 0 && _notes.splice(showing)
     return _notes
-  }, [notes, showing])
+  }, [filterOptions.repost, notes, showing])
 
   if (!userPubkey) return null
 
diff --git a/src/types/modsFilter.ts b/src/types/modsFilter.ts
index 6cf8dc3..22e0982 100644
--- a/src/types/modsFilter.ts
+++ b/src/types/modsFilter.ts
@@ -41,4 +41,4 @@ export interface FilterOptions {
   repost: RepostFilter
 }
 
-export type FeedPostsFilter = Pick<FilterOptions, 'nsfw'>
+export type FeedPostsFilter = Pick<FilterOptions, 'nsfw' | 'repost'>