2024-10-23 21:20:24 +00:00
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<script lang="ts">
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2024-11-15 22:03:54 +00:00
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import {onMount} from "svelte"
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2026-06-17 16:08:58 +00:00
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import * as nip19 from "nostr-tools/nip19"
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2024-10-23 21:20:24 +00:00
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import {page} from "$app/stores"
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2026-06-17 16:08:58 +00:00
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import {goto} from "$app/navigation"
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2026-07-28 16:16:26 +00:00
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import {sleep, spec} from "@welshman/lib"
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2025-10-13 20:35:02 +00:00
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import type {MakeNonOptional} from "@welshman/lib"
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2026-06-17 16:08:58 +00:00
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import type {TrustedEvent} from "@welshman/util"
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2026-07-28 16:16:26 +00:00
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import {deriveEventsAsc} from "@welshman/store"
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import {COMMENT, tagValue, tagSpec} from "@welshman/util"
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2025-04-09 22:32:18 +00:00
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import {request} from "@welshman/net"
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2025-09-10 22:26:39 +00:00
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import Reply from "@assets/icons/reply-2.svg?dataurl"
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2024-10-23 21:20:24 +00:00
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import Icon from "@lib/components/Icon.svelte"
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2025-03-19 17:30:36 +00:00
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import PageContent from "@lib/components/PageContent.svelte"
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2024-10-24 18:52:02 +00:00
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import Spinner from "@lib/components/Spinner.svelte"
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2024-10-23 21:20:24 +00:00
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import Button from "@lib/components/Button.svelte"
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2026-06-17 16:08:58 +00:00
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import Link from "@lib/components/Link.svelte"
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2026-03-12 23:41:07 +00:00
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import SpaceBar from "@app/components/SpaceBar.svelte"
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2026-06-17 16:08:58 +00:00
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import ThreadPost from "@app/components/ThreadPost.svelte"
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import ThreadPagination from "@app/components/ThreadPagination.svelte"
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2025-02-06 18:24:31 +00:00
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import EventReply from "@app/components/EventReply.svelte"
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2026-06-17 16:08:58 +00:00
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import RoomName from "@app/components/RoomName.svelte"
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2026-07-28 16:16:26 +00:00
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import {deriveEvent, deriveEventsById} from "@app/repository"
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2026-06-08 22:33:38 +00:00
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import {decodeRelay} from "@app/relays"
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2026-06-17 16:08:58 +00:00
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import {makeSpacePath, scrollToEvent} from "@app/routes"
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const POSTS_PER_PAGE = 20
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2024-10-23 21:20:24 +00:00
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2025-10-13 20:35:02 +00:00
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const {relay, id} = $page.params as MakeNonOptional<typeof $page.params>
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2024-10-23 21:20:24 +00:00
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const url = decodeRelay(relay)
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2025-11-20 23:54:06 +00:00
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const event = deriveEvent(id, [url])
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2024-10-24 20:05:25 +00:00
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const filters = [{kinds: [COMMENT], "#E": [id]}]
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2026-07-28 16:16:26 +00:00
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const replies = deriveEventsAsc(deriveEventsById(filters))
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2024-10-23 21:20:24 +00:00
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const back = () => history.back()
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2026-06-17 16:08:58 +00:00
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const posts = $derived.by(() => {
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if (!$event) return []
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return [$event, ...$replies]
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})
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const replyCount = $derived(Math.max(0, posts.length - 1))
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2026-07-28 16:16:26 +00:00
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const h = $derived(tagValue(tagSpec("h"), $event?.tags || []))
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2026-06-17 16:08:58 +00:00
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const pageCount = $derived(Math.max(1, Math.ceil(posts.length / POSTS_PER_PAGE)))
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const currentPage = $derived.by(() => {
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const raw = parseInt($page.url.searchParams.get("page") || "1")
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if (Number.isNaN(raw) || raw < 1) return 1
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if (raw > pageCount) return pageCount
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return raw
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})
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const pagePosts = $derived(
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posts.slice((currentPage - 1) * POSTS_PER_PAGE, currentPage * POSTS_PER_PAGE),
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)
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const setPage = (nextPage: number) => {
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const params = new URLSearchParams($page.url.searchParams)
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if (nextPage <= 1) {
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params.delete("page")
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} else {
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params.set("page", String(nextPage))
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}
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const search = params.toString()
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goto(`${$page.url.pathname}${search ? `?${search}` : ""}`, {
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keepFocus: true,
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noScroll: true,
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})
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}
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const openReply = (post: TrustedEvent) => {
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replyTo = post
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2024-10-23 23:16:28 +00:00
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showReply = true
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}
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2024-10-23 21:20:24 +00:00
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2024-10-23 23:16:28 +00:00
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const closeReply = () => {
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showReply = false
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replyTo = undefined
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2024-10-23 21:20:24 +00:00
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}
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2024-10-23 23:16:28 +00:00
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2026-06-17 16:08:58 +00:00
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const openThreadReply = () => {
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if ($event) {
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openReply($event)
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}
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}
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const clearReplyParent = () => {
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if ($event) {
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replyTo = $event
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}
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2024-11-21 19:52:29 +00:00
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}
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2025-02-04 00:37:14 +00:00
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let showReply = $state(false)
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2026-06-17 16:08:58 +00:00
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let replyTo: TrustedEvent | undefined = $state()
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let hashHandled = $state(false)
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$effect(() => {
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if (hashHandled || posts.length === 0) return
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const hash = window.location.hash.replace(/^#/, "")
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if (!hash.startsWith("nevent1")) return
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let eventId: string
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try {
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const decoded = nip19.decode(hash)
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if (decoded.type !== "nevent") return
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eventId = decoded.data.id
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} catch {
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return
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}
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2026-07-28 16:16:26 +00:00
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const index = posts.findIndex(spec({id: eventId}))
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2026-06-17 16:08:58 +00:00
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if (index < 0) return
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hashHandled = true
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const targetPage = Math.ceil((index + 1) / POSTS_PER_PAGE)
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if (targetPage !== currentPage) {
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setPage(targetPage)
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}
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setTimeout(() => scrollToEvent(posts[index]!.id), 100)
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})
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2024-10-24 18:52:02 +00:00
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onMount(() => {
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2025-04-11 16:27:19 +00:00
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const controller = new AbortController()
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request({relays: [url], filters, signal: controller.signal})
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2024-11-14 18:53:13 +00:00
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2024-11-15 22:03:54 +00:00
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return () => {
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2025-04-11 16:27:19 +00:00
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controller.abort()
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2024-11-15 22:03:54 +00:00
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}
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2024-11-14 18:53:13 +00:00
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})
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2024-10-23 21:20:24 +00:00
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</script>
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2026-06-17 16:08:58 +00:00
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<SpaceBar {back} class="!h-auto min-h-20 py-3">
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2025-03-19 17:30:36 +00:00
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{#snippet title()}
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2026-06-17 16:08:58 +00:00
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<div class="flex min-w-0 flex-col gap-0.5">
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2026-07-02 21:22:55 +00:00
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<h1 class="truncate min-w-0 font-bold sm:text-xl">
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2026-07-28 16:16:26 +00:00
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{tagValue(tagSpec("title"), $event?.tags || []) || ""}
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2026-06-17 16:08:58 +00:00
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</h1>
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<p class="text-xs opacity-75">
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{replyCount}
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{replyCount === 1 ? "reply" : "replies"}
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{#if h}
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· <Link href={makeSpacePath(url, h)} class="link">#<RoomName {url} {h} /></Link>
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{/if}
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</p>
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</div>
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2025-03-19 17:30:36 +00:00
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{/snippet}
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2026-03-12 23:41:07 +00:00
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</SpaceBar>
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2025-03-19 17:30:36 +00:00
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2026-06-24 20:56:53 +00:00
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<PageContent noPad class="flex flex-col">
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2024-10-24 18:52:02 +00:00
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{#if $event}
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2026-06-24 20:56:53 +00:00
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<div class="bg-surface border-y" style="border-color: var(--line)">
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2026-06-17 16:08:58 +00:00
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{#each pagePosts as post (post.id)}
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<ThreadPost {url} event={post} threadPubkey={$event.pubkey} onReply={openReply} />
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2025-03-19 17:30:36 +00:00
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{/each}
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</div>
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2026-06-17 16:08:58 +00:00
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{#if pageCount > 1}
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<ThreadPagination page={currentPage} {pageCount} onPage={setPage} />
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{/if}
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{#if showReply && replyTo && $event}
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<EventReply
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{url}
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event={$event}
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parent={replyTo.id === $event.id ? undefined : replyTo}
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onClose={closeReply}
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onClearParent={clearReplyParent}
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onSubmit={closeReply} />
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2025-03-19 17:30:36 +00:00
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{:else}
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2026-06-17 16:08:58 +00:00
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<div class="flex justify-end p-4">
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2026-06-24 20:56:53 +00:00
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<Button class="button button-primary" onclick={openThreadReply}>
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2025-09-10 22:26:39 +00:00
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<Icon icon={Reply} />
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2025-03-19 17:30:36 +00:00
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Reply to thread
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2024-11-21 19:52:29 +00:00
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</Button>
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</div>
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{/if}
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2024-10-24 18:52:02 +00:00
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{:else}
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2026-06-04 21:31:07 +00:00
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<div class="flex justify-center py-20">
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{#await sleep(5000)}
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<Spinner loading>Loading thread...</Spinner>
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{:then}
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<p>Failed to load thread.</p>
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{/await}
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</div>
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2024-10-24 18:52:02 +00:00
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{/if}
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2025-03-19 17:30:36 +00:00
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</PageContent>
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