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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| import { createRxBackwardReq, uniq, type LazyFilter } from 'rx-nostr'; | ||
| import { filter, tap } from 'rxjs'; | ||
| import { get, writable } from 'svelte/store'; | ||
| import { authorActionReqEmit } from '$lib/author/Action'; | ||
| import { minTimelineLength, searchRelays } from '$lib/Constants'; | ||
| import { EventItem } from '$lib/Items'; | ||
| import { fetchEvents } from '$lib/RxNostrHelper'; | ||
| import { referencesReqEmit, rxNostr } from './MainTimeline'; | ||
| import type { Timeline } from './Timeline'; | ||
| import { oldestCreatedAt } from './TimelineHelper'; | ||
|
|
||
| export class SearchTimeline implements Timeline { | ||
| items = writable<EventItem[]>([]); | ||
| #completed = false; | ||
|
|
||
| constructor(public readonly filter: LazyFilter) {} | ||
|
|
||
| subscribe(): void { | ||
| console.debug('[search timeline subscribe]', this.filter); | ||
| } | ||
|
|
||
| unsubscribe(): void { | ||
| console.debug('[search timeline unsubscribe]', this.filter); | ||
| this.items.set([]); | ||
| } | ||
|
|
||
| async load(): Promise<void> { | ||
| if (this.#completed) { | ||
| return; | ||
| } | ||
|
|
||
| console.debug('[search timeline load]', this.filter); | ||
| const $items = get(this.items); | ||
| const firstLength = $items.length; | ||
| const filterBase = { ...this.filter }; | ||
| const { promise, resolve } = Promise.withResolvers<void>(); | ||
| const req = createRxBackwardReq(); | ||
| rxNostr | ||
| .use(req) | ||
| .pipe( | ||
| uniq(), | ||
| filter(({ event }) => !$items.some((item) => item.event.id === event.id)), | ||
| tap(({ event }) => { | ||
| referencesReqEmit(event); | ||
| authorActionReqEmit(event); | ||
| }) | ||
| ) | ||
| .subscribe({ | ||
| next: ({ event }) => { | ||
| console.debug('[search next]', event); | ||
| const item = new EventItem(event); | ||
| const index = $items.findIndex( | ||
| (x) => x.event.created_at < item.event.created_at | ||
| ); | ||
| if (index < 0) { | ||
| $items.push(item); | ||
| } else { | ||
| $items.splice(index, 0, item); | ||
| } | ||
| this.items.set($items); | ||
| }, | ||
| complete: () => { | ||
| console.debug('[search complete]', firstLength, $items.length); | ||
| resolve(); | ||
| } | ||
| }); | ||
| const until = oldestCreatedAt($items); | ||
| req.emit([{ ...filterBase, until, since: until - 15 * 60 }], { relays: searchRelays }); | ||
| req.over(); | ||
| await promise; | ||
|
|
||
| const length = $items.length - firstLength; | ||
| if (length < minTimelineLength) { | ||
| const limit = minTimelineLength - length; | ||
| const events = await fetchEvents( | ||
| [{ ...filterBase, until: oldestCreatedAt($items), limit }], | ||
| searchRelays | ||
| ); | ||
| const _items = events | ||
| .filter((event) => !$items.some((item) => item.event.id === event.id)) | ||
| .splice(0, limit) | ||
| .map((event) => new EventItem(event)); | ||
| if (_items.length === 0) { | ||
| this.#completed = true; | ||
| } | ||
| $items.push(..._items); | ||
| this.items.set($items); | ||
| } | ||
| console.log('[search loaded]', firstLength, $items.length); | ||
| } | ||
|
|
||
| get completed() { | ||
| return this.#completed; | ||
| } | ||
| } |
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