feat: support dnd to reorder relay sets

src/components/FavoriteRelaysSetting/FavoriteRelayList.tsx

@@ -0,0 +1,17 @@
+import { useFavoriteRelays } from '@/providers/FavoriteRelaysProvider'
+import { useTranslation } from 'react-i18next'
+import RelayItem from './RelayItem'
+
+export default function FavoriteRelayList() {
+  const { t } = useTranslation()
+  const { favoriteRelays } = useFavoriteRelays()
+
+  return (
+    <div className="space-y-2">
+      <div className="text-muted-foreground font-semibold select-none">{t('Relays')}</div>
+      {favoriteRelays.map((relay) => (
+        <RelayItem key={relay} relay={relay} />
+      ))}
+    </div>
+  )
+}

src/components/FavoriteRelaysSetting/RelaySet.tsx

@@ -10,12 +10,15 @@ import { Input } from '@/components/ui/input'
 import { useFavoriteRelays } from '@/providers/FavoriteRelaysProvider'
 import { useScreenSize } from '@/providers/ScreenSizeProvider'
 import { TRelaySet } from '@/types'
+import { useSortable } from '@dnd-kit/sortable'
+import { CSS } from '@dnd-kit/utilities'
 import {
   Check,
   ChevronDown,
   Edit,
   EllipsisVertical,
   FolderClosed,
+  GripVertical,
   Link,
   Trash2
 } from 'lucide-react'
@@ -28,16 +31,35 @@ import { useRelaySetsSettingComponent } from './provider'
 export default function RelaySet({ relaySet }: { relaySet: TRelaySet }) {
   const { t } = useTranslation()
   const { expandedRelaySetId } = useRelaySetsSettingComponent()
+  const { attributes, listeners, setNodeRef, transform, transition, isDragging } = useSortable({
+    id: relaySet.id
+  })
+
+  const style = {
+    transform: CSS.Transform.toString(transform),
+    transition,
+    opacity: isDragging ? 0.5 : 1
+  }
 
   return (
-    <div className="w-full border rounded-lg pl-4 pr-2 py-2.5">
+    <div ref={setNodeRef} style={style} className="relative group">
+      <div className="w-full border rounded-lg px-2 py-2.5">
         <div className="flex justify-between items-center">
+          <div className="flex items-center">
+            <div
+              className="cursor-grab active:cursor-grabbing p-2 hover:bg-muted rounded touch-none"
+              {...attributes}
+              {...listeners}
+            >
+              <GripVertical className="size-4 text-muted-foreground" />
+            </div>
             <div className="flex gap-2 items-center">
               <div className="flex justify-center items-center w-6 h-6 shrink-0">
                 <FolderClosed className="size-4" />
               </div>
               <RelaySetName relaySet={relaySet} />
             </div>
+          </div>
           <div className="flex gap-1">
             <RelayUrlsExpandToggle relaySetId={relaySet.id}>
               {t('n relays', { n: relaySet.relayUrls.length })}
@@ -47,6 +69,7 @@ export default function RelaySet({ relaySet }: { relaySet: TRelaySet }) {
         </div>
         {expandedRelaySetId === relaySet.id && <RelayUrls relaySetId={relaySet.id} />}
       </div>
+    </div>
   )
 }
 

src/components/FavoriteRelaysSetting/RelaySetList.tsx

@@ -0,0 +1,72 @@
+import { useFavoriteRelays } from '@/providers/FavoriteRelaysProvider'
+import {
+  closestCenter,
+  DndContext,
+  DragEndEvent,
+  KeyboardSensor,
+  PointerSensor,
+  useSensor,
+  useSensors
+} from '@dnd-kit/core'
+import { restrictToParentElement, restrictToVerticalAxis } from '@dnd-kit/modifiers'
+import {
+  arrayMove,
+  SortableContext,
+  sortableKeyboardCoordinates,
+  verticalListSortingStrategy
+} from '@dnd-kit/sortable'
+import { useTranslation } from 'react-i18next'
+import PullRelaySetsButton from './PullRelaySetsButton'
+import RelaySet from './RelaySet'
+
+export default function RelaySetList() {
+  const { t } = useTranslation()
+  const { relaySets, reorderRelaySets } = useFavoriteRelays()
+
+  const sensors = useSensors(
+    useSensor(PointerSensor),
+    useSensor(KeyboardSensor, {
+      coordinateGetter: sortableKeyboardCoordinates
+    })
+  )
+
+  const handleDragEnd = (event: DragEndEvent) => {
+    const { active, over } = event
+
+    if (over && active.id !== over.id) {
+      const oldIndex = relaySets.findIndex((item) => item.id === active.id)
+      const newIndex = relaySets.findIndex((item) => item.id === over.id)
+
+      const reorderedSets = arrayMove(relaySets, oldIndex, newIndex)
+      reorderRelaySets(reorderedSets)
+    }
+  }
+
+  return (
+    <div className="space-y-2">
+      <div className="flex flex-wrap items-center justify-between gap-2">
+        <div className="text-muted-foreground font-semibold select-none shrink-0">
+          {t('Relay sets')}
+        </div>
+        <PullRelaySetsButton />
+      </div>
+      <DndContext
+        sensors={sensors}
+        collisionDetection={closestCenter}
+        onDragEnd={handleDragEnd}
+        modifiers={[restrictToVerticalAxis, restrictToParentElement]}
+      >
+        <SortableContext
+          items={relaySets.map((set) => set.id)}
+          strategy={verticalListSortingStrategy}
+        >
+          <div className="grid gap-2">
+            {relaySets.map((relaySet) => (
+              <RelaySet key={relaySet.id} relaySet={relaySet} />
+            ))}
+          </div>
+        </SortableContext>
+      </DndContext>
+    </div>
+  )
+}

src/components/FavoriteRelaysSetting/index.tsx

@@ -1,39 +1,18 @@
-import { useFavoriteRelays } from '@/providers/FavoriteRelaysProvider'
-import { useTranslation } from 'react-i18next'
 import AddNewRelay from './AddNewRelay'
 import AddNewRelaySet from './AddNewRelaySet'
+import FavoriteRelayList from './FavoriteRelayList'
 import { RelaySetsSettingComponentProvider } from './provider'
-import RelayItem from './RelayItem'
+import RelaySetList from './RelaySetList'
-import RelaySet from './RelaySet'
 import TemporaryRelaySet from './TemporaryRelaySet'
-import PullRelaySetsButton from './PullRelaySetsButton'
 
 export default function FavoriteRelaysSetting() {
-  const { t } = useTranslation()
-  const { relaySets, favoriteRelays } = useFavoriteRelays()
-
   return (
     <RelaySetsSettingComponentProvider>
       <div className="space-y-4">
         <TemporaryRelaySet />
-        <div className="space-y-2">
+        <RelaySetList />
-          <div className="flex flex-wrap items-center justify-between gap-2">
-            <div className="text-muted-foreground font-semibold select-none shrink-0">
-              {t('Relay sets')}
-            </div>
-            <PullRelaySetsButton />
-          </div>
-          {relaySets.map((relaySet) => (
-            <RelaySet key={relaySet.id} relaySet={relaySet} />
-          ))}
-        </div>
         <AddNewRelaySet />
-        <div className="space-y-2">
+        <FavoriteRelayList />
-          <div className="text-muted-foreground font-semibold select-none">{t('Relays')}</div>
-          {favoriteRelays.map((relay) => (
-            <RelayItem key={relay} relay={relay} />
-          ))}
-        </div>
         <AddNewRelay />
       </div>
     </RelaySetsSettingComponentProvider>

src/lib/draft-event.ts

@@ -135,7 +135,7 @@ export async function createShortTextNoteDraftEvent(
 }
 
 // https://github.com/nostr-protocol/nips/blob/master/51.md
-export function createRelaySetDraftEvent(relaySet: TRelaySet): TDraftEvent {
+export function createRelaySetDraftEvent(relaySet: Omit<TRelaySet, 'aTag'>): TDraftEvent {
   return {
     kind: kinds.Relaysets,
     content: '',
@@ -312,14 +312,18 @@ export function createProfileDraftEvent(content: string, tags: string[][] = []):
 
 export function createFavoriteRelaysDraftEvent(
   favoriteRelays: string[],
-  relaySetEvents: Event[]
+  relaySetEventsOrATags: Event[] | string[][]
 ): TDraftEvent {
   const tags: string[][] = []
   favoriteRelays.forEach((url) => {
     tags.push(buildRelayTag(url))
   })
-  relaySetEvents.forEach((event) => {
+  relaySetEventsOrATags.forEach((eventOrATag) => {
-    tags.push(buildATag(event))
+    if (Array.isArray(eventOrATag)) {
+      tags.push(eventOrATag)
+    } else {
+      tags.push(buildATag(eventOrATag))
+    }
   })
   return {
     kind: ExtendedKind.FAVORITE_RELAYS,
@@ -579,7 +583,7 @@ function extractImagesFromContent(content: string) {
   return content.match(/https?:\/\/[^\s"']+\.(jpg|jpeg|png|gif|webp|heic)/gi)
 }
 
-function buildATag(event: Event, upperCase: boolean = false) {
+export function buildATag(event: Event, upperCase: boolean = false) {
   const coordinate = getReplaceableCoordinateFromEvent(event)
   const hint = client.getEventHint(event.id)
   return trimTagEnd([upperCase ? 'A' : 'a', coordinate, hint])

src/lib/event-metadata.ts

@@ -1,6 +1,7 @@
 import { BIG_RELAY_URLS, POLL_TYPE } from '@/constants'
 import { TPollType, TRelayList, TRelaySet } from '@/types'
 import { Event, kinds } from 'nostr-tools'
+import { buildATag } from './draft-event'
 import { getReplaceableEventIdentifier } from './event'
 import { getAmountFromInvoice, getLightningAddressFromProfile } from './lightning'
 import { formatPubkey, pubkeyToNpub } from './pubkey'
@@ -91,7 +92,7 @@ export function getRelaySetFromEvent(event: Event): TRelaySet {
     name = id
   }
 
-  return { id, name, relayUrls }
+  return { id, name, relayUrls, aTag: buildATag(event) }
 }
 
 export function getZapInfoFromEvent(receiptEvent: Event) {

src/providers/FavoriteRelaysProvider.tsx

@@ -21,6 +21,7 @@ type TFavoriteRelaysContext = {
   addRelaySets: (newRelaySetEvents: Event[]) => Promise<void>
   deleteRelaySet: (id: string) => Promise<void>
   updateRelaySet: (newSet: TRelaySet) => Promise<void>
+  reorderRelaySets: (reorderedSets: TRelaySet[]) => Promise<void>
 }
 
 const FavoriteRelaysContext = createContext<TFavoriteRelaysContext | undefined>(undefined)
@@ -109,7 +110,15 @@ export function FavoriteRelaysProvider({ children }: { children: React.ReactNode
           relaySetEventMap.set(d, event)
         }
       })
-      const uniqueNewRelaySetEvents = Array.from(relaySetEventMap.values())
+      const uniqueNewRelaySetEvents = relaySetIds
+        .map((id, index) => {
+          const event = relaySetEventMap.get(id)
+          if (event) {
+            return event
+          }
+          return storedRelaySetEvents[index] || null
+        })
+        .filter(Boolean) as Event[]
       setRelaySetEvents(uniqueNewRelaySetEvents)
       await Promise.all(
         uniqueNewRelaySetEvents.map((event) => {
@@ -210,6 +219,16 @@ export function FavoriteRelaysProvider({ children }: { children: React.ReactNode
     })
   }
 
+  const reorderRelaySets = async (reorderedSets: TRelaySet[]) => {
+    setRelaySets(reorderedSets)
+    const draftEvent = createFavoriteRelaysDraftEvent(
+      favoriteRelays,
+      reorderedSets.map((set) => set.aTag)
+    )
+    const newFavoriteRelaysEvent = await publish(draftEvent)
+    updateFavoriteRelaysEvent(newFavoriteRelaysEvent)
+  }
+
   return (
     <FavoriteRelaysContext.Provider
       value={{
@@ -220,7 +239,8 @@ export function FavoriteRelaysProvider({ children }: { children: React.ReactNode
         createRelaySet,
         addRelaySets,
         deleteRelaySet,
-        updateRelaySet
+        updateRelaySet,
+        reorderRelaySets
       }}
     >
       {children}

src/types/index.d.ts

@@ -59,6 +59,7 @@ export type TWebMetadata = {
 
 export type TRelaySet = {
   id: string
+  aTag: string[]
   name: string
   relayUrls: string[]
 }