feat(backend,frontend): search everywhere in buttons, links and message data, a jump from search or an alert lights up the found words and buttons

frontend/src/lib/stores/search.svelte.ts

@@ -11,6 +11,7 @@ import type {
   SearchQuery,
 } from "#lib/api/types.js";
 import { accounts } from "#lib/stores/accounts.svelte.js";
+import { MARK_PARAM } from "#lib/stores/feed.svelte.js";
 import { goto } from "$app/navigation";
 import { page } from "$app/state";
 
@@ -30,6 +31,7 @@ const DEBOUNCE_MS = 250;
 const REMOTE_DELAY_MS = 450;
 const CHAT_LIMIT = 30;
 const PAGE_SIZE = 30;
+export const EVERYWHERE_MIN = 3;
 const KINDS = new Set<string>(["private", "group", "channel"]);
 const DAY = /^\d{4}-\d{2}-\d{2}$/;
 const PARAMS = [
@@ -41,6 +43,7 @@ const PARAMS = [
   "from",
   "since",
   "until",
+  "everywhere",
 ] as const;
 
 type Param = (typeof PARAMS)[number];
@@ -90,6 +93,7 @@ export function createHitPager() {
   let hits = $state<SearchHit[]>([]);
   let terms = $state<string[]>([]);
   let cursor = $state<string | null>(null);
+  let scannedTo = $state<string | null>(null);
   let loading = $state(false);
   let appending = $state(false);
   let failed = $state(false);
@@ -106,6 +110,7 @@ export function createHitPager() {
       hits = request.cursor ? [...hits, ...result.hits] : result.hits;
       ({ terms } = result);
       cursor = result.next_cursor;
+      scannedTo = result.scanned_to;
     } catch {
       if (current === seq) {
         failed = true;
@@ -122,6 +127,7 @@ export function createHitPager() {
     seq += 1;
     base = request;
     cursor = null;
+    scannedTo = null;
     failed = false;
     appending = false;
     loading = request !== null;
@@ -160,12 +166,21 @@ export function createHitPager() {
       run(base);
     },
     run,
+    get scannedTo() {
+      return scannedTo;
+    },
     get terms() {
       return terms;
     },
   };
 }
 
+export type HitPager = ReturnType<typeof createHitPager>;
+
+export function hitKey(hit: SearchHit): string {
+  return `${hit.chat_id}:${hit.message_id}`;
+}
+
 function createSearch() {
   let open = $state(false);
   let draft = $state("");
@@ -177,7 +192,9 @@ function createSearch() {
   let lastRequest = "";
   let lastText = "";
   let seq = 0;
+  let lastEverywhere = "";
   const messages = createHitPager();
+  const everywhere = createHitPager();
 
   const params = $derived(page.url.searchParams);
   const urlQuery = $derived(params.get("q") ?? "");
@@ -192,6 +209,14 @@ function createSearch() {
     }
     return JSON.stringify([accounts.selectedId, toRequest(query, filters)]);
   });
+  const everywhereRequest = $derived.by(() => {
+    const query = urlQuery.trim();
+    if (!params.has("everywhere") || query.length < EVERYWHERE_MIN) {
+      return "";
+    }
+    const deep = { ...toRequest(query, filters), everywhere: true };
+    return JSON.stringify([accounts.selectedId, deep]);
+  });
   const peerHits = $derived.by(() => {
     const shown = new Set(chatHits.map((chat) => chat.chat_id));
     return peerResults.filter((item) => !shown.has(item.chat_id));
@@ -272,7 +297,9 @@ function createSearch() {
     stopTyping();
     lastRequest = "";
     lastText = "";
+    lastEverywhere = "";
     messages.run(null);
+    everywhere.run(null);
     runText("");
   }
 
@@ -288,14 +315,21 @@ function createSearch() {
       const update = Object.fromEntries(PARAMS.map((key) => [key, null]));
       write(update).catch(() => undefined);
     },
+    everywhere,
+    get everywhereRequest() {
+      return everywhereRequest;
+    },
     get filtered() {
       return filtered;
     },
     get filters() {
       return filters;
     },
-    hitHref(chatId: number, messageId: number): string {
+    hitHref(chatId: number, messageId: number, marks: string[]): string {
       const next = new URLSearchParams({ message: String(messageId) });
+      for (const mark of marks) {
+        next.append(MARK_PARAM, mark);
+      }
       for (const key of PARAMS) {
         const value = params.get(key);
         if (value) {
@@ -315,6 +349,9 @@ function createSearch() {
       return request;
     },
     reset,
+    searchEverywhere() {
+      write({ everywhere: "1" }).catch(() => undefined);
+    },
     setFilter(key: "from" | "kind" | "since" | "until", value: string | null) {
       write({ [key]: value }).catch(() => undefined);
     },
@@ -329,7 +366,11 @@ function createSearch() {
       }
       timer = setTimeout(() => {
         timer = null;
-        write({ q: draft.trim() ? draft : null })
+        const same = draft.trim() === urlQuery.trim();
+        write({
+          everywhere: same ? params.get("everywhere") : null,
+          q: draft.trim() ? draft : null,
+        })
           .catch(() => undefined)
           .finally(() => {
             if (timer === null) {
@@ -352,6 +393,12 @@ function createSearch() {
         runText(value);
       }
     },
+    syncEverywhere(key: string) {
+      if (key !== lastEverywhere) {
+        lastEverywhere = key;
+        everywhere.run(key ? (JSON.parse(key)[1] as SearchQuery) : null);
+      }
+    },
     get text() {
       return text;
     },