Add relay hints to replies and publish to parent relay hint

src/components/NewNote/EditBox/EditBox.tsx

@@ -632,17 +632,21 @@ const EditBox: Component<{
       const rep = props.replyToNote;
 
       if (rep) {
-        const rootTag = rep.post.tags.find(t => t[0] === 'e' && t[3] === 'root');
+        let rootTag = rep.post.tags.find(t => t[0] === 'e' && t[3] === 'root');
 
         // If the note has a root tag, that meens it is not a root note itself
         // So we need to copy the `root` tag and add a `reply` tag
         if (rootTag) {
-          tags.push([...rootTag]);
+          const tagWithHint = rootTag.map((v, i) => i === 2 ?
-          tags.push(['e', rep.post.id, '', 'reply']);
+            (rep.post.relayHints && rep.post.relayHints[rep.post.id]) || '' :
+            v,
+          );
+          tags.push([...tagWithHint]);
+          tags.push(['e', rep.post.id, (rep.post.relayHints && rep.post.relayHints[rep.post.id]) || '', 'reply']);
         }
         // Otherwise, add the note as the root tag for this reply
         else {
-          tags.push(['e', rep.post.id, '', 'root']);
+          tags.push(['e', rep.post.id, (rep.post.relayHints && rep.post.relayHints[rep.post.id]) || '', 'root']);
         }
 
         // Copy all `p` tags from the note we are repling to

src/constants.ts

@@ -138,6 +138,7 @@ export enum Kind  {
   SuggestedUsersByCategory = 10_000_134,
   UploadChunk = 10_000_135,
   UserRelays=10_000_139,
+  RelayHint=10_000_141,
 
   WALLET_OPERATION = 10_000_300,
 }

src/contexts/ThreadContext.tsx

@@ -206,6 +206,11 @@ export const ThreadProvider = (props: { children: ContextChildren }) => {
       setLinkPreviews(() => ({ [data.url]: preview }));
       return;
     }
+
+    if (content.kind === Kind.RelayHint) {
+      const hints = JSON.parse(content.content);
+      updateStore('page', 'relayHints', (rh) => ({ ...rh, ...hints }));
+    }
   };
 
   const savePage = (page: FeedPage) => {

src/lib/notes.tsx

@@ -1,6 +1,6 @@
 import { A } from "@solidjs/router";
 // @ts-ignore Bad types in nostr-tools
-import { Relay } from "nostr-tools";
+import { Relay, relayInit } from "nostr-tools";
 import { createStore } from "solid-js/store";
 import LinkPreview from "../components/LinkPreview/LinkPreview";
 import { appleMusicRegex, emojiRegex, hashtagRegex, interpunctionRegex, Kind, linebreakRegex, lnRegex, mixCloudRegex, nostrNestsRegex, noteRegex, noteRegexLocal, profileRegex, profileRegexG, soundCloudRegex, spotifyRegex, tagMentionRegex, twitchRegex, urlRegex, urlRegexG, wavlakeRegex, youtubeRegex } from "../constants";
@@ -440,7 +440,21 @@ export const sendEvent = async (event: NostrEvent, relays: Relay[], relaySetting
   let responses = [];
   let reasons: string[] = [];
 
+  // Relay hints fromm `e` tags
+  const hintRelayUrls = event.tags.reduce((acc, t) => {
+    if (
+      t[0] === 'e' &&
+      t[2].length > 0 &&
+      !relays.find(r => r.url === t[2])
+    ) {
+      return [ ...acc, t[2] ];
+    }
+
+    return [...acc];
+  }, []);
+
   for (let i = 0;i < relays.length;i++) {
+
     const relay = relays[i];
 
     const settings = (relaySettings && relaySettings[relay.url]) || { read: true, write: true };
@@ -474,6 +488,30 @@ export const sendEvent = async (event: NostrEvent, relays: Relay[], relaySetting
     }));
   }
 
+  for (let i = 0;i < hintRelayUrls.length;i++) {
+    const url = hintRelayUrls[i];
+
+    new Promise<string>(async (resolve, reject) => {
+      const relay = relayInit(url);
+      await relay.connect();
+
+      try {
+        logInfo('publishing to relay: ', relay)
+
+        await relay.publish(signedNote);
+
+        logInfo(`${relay.url} has accepted our event`);
+        resolve('success');
+
+      } catch (e) {
+        logError(`Failed publishing note to ${relay.url}: `, e);
+        reject('success');
+      }
+
+      relay.close();
+    });
+  }
+
   try {
     await Promise.any(responses);
 

src/stores/note.ts

@@ -1,3 +1,4 @@
+import { propTraps } from "@solid-primitives/props";
 import { nip19 } from "nostr-tools";
 import { Kind } from "../constants";
 import { hexToNpub } from "../lib/keys";
@@ -55,6 +56,7 @@ export const getRepostInfo: RepostInfo = (page, message) => {
       satszapped: stat?.satszapped || 0,
       noteId: nip19.noteEncode(message.id),
       noteActions: (page.noteActions && page.noteActions[message.id]) || noActions,
+      relayHints: page.relayHints,
     },
   }
 };
@@ -299,6 +301,7 @@ export const convertToNotes: ConvertToNotes = (page) => {
         satszapped: stat?.satszapped || 0,
         noteId: nip19.noteEncode(msg.id),
         noteActions: (page.noteActions && page.noteActions[msg.id]) ?? noActions,
+        relayHints: page.relayHints,
       },
       repost,
       msg,

src/types/primal.d.ts

@@ -207,6 +207,13 @@ export type NostrBookmarks = {
   tags: string[][],
 };
 
+export type NostrRelayHint = {
+  kind: Kind.RelayHint,
+  content: string,
+  created_at?: number,
+  tags: string[][],
+};
+
 export type NostrEventContent =
   NostrNoteContent |
   NostrUserContent |
@@ -235,7 +242,8 @@ export type NostrEventContent =
   NostrUserZaps |
   NostrSuggestedUsers |
   PrimalUserRelays |
-  NostrBookmarks;
+  NostrBookmarks |
+  NostrRelayHint;
 
 export type NostrEvent = [
   type: "EVENT",
@@ -293,6 +301,7 @@ export type FeedPage = {
   postStats: NostrPostStats,
   mentions?: Record<string, NostrNoteContent>,
   noteActions: Record<string, NoteActions>,
+  relayHints?: Record<string, string>,
   since?: number,
   until?: number,
 };
@@ -437,6 +446,7 @@ export type PrimalNoteData = {
   satszapped: number,
   noteId: string,
   noteActions: NoteActions,
+  relayHints?: Record<string, string>,
 }
 
 export type PrimalNote = {