Jon Staab
73 lines
2.3 KiB
TypeScript
73 lines
2.3 KiB
TypeScript
import {writable, derived} from "svelte/store"
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import {deriveEvents} from "@welshman/store"
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import {repository, pubkey} from "@welshman/app"
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import {prop, max, sortBy, assoc, lt, now} from "@welshman/lib"
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import type {Filter} from "@welshman/util"
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import {DIRECT_MESSAGE} from "@welshman/util"
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import {makeSpacePath} from "@app/routes"
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import {
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MESSAGE,
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THREAD,
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COMMENT,
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deriveEventsForUrl,
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getMembershipUrls,
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userMembership,
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} from "@app/state"
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// Checked state
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export const checked = writable<Record<string, number>>({})
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export const deriveChecked = (key: string) => derived(checked, prop(key))
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export const setChecked = (key: string, ts = now()) =>
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checked.update(state => ({...state, [key]: ts}))
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// Filters for various routes
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export const CHAT_FILTERS: Filter[] = [{kinds: [DIRECT_MESSAGE]}]
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export const SPACE_FILTERS: Filter[] = [{kinds: [THREAD, MESSAGE, COMMENT]}]
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export const ROOM_FILTERS: Filter[] = [{kinds: [MESSAGE]}]
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export const THREAD_FILTERS: Filter[] = [
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{kinds: [THREAD]},
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{kinds: [COMMENT], "#K": [String(THREAD)]},
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]
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export const getNotificationFilters = (since: number): Filter[] =>
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[...CHAT_FILTERS, ...SPACE_FILTERS, ...THREAD_FILTERS].map(assoc("since", since))
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export const getRoomFilters = (room: string): Filter[] => ROOM_FILTERS.map(assoc("#~", [room]))
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// Notification derivation
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export const deriveNotification = (path: string, filters: Filter[], url?: string) => {
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const events = url ? deriveEventsForUrl(url, filters) : deriveEvents(repository, {filters})
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return derived(
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[pubkey, deriveChecked("*"), deriveChecked(path), events],
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([$pubkey, $allChecked, $checked, $events]) => {
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const [latestEvent] = sortBy($e => -$e.created_at, $events)
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return (
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latestEvent?.pubkey !== $pubkey && lt(max([$allChecked, $checked]), latestEvent?.created_at)
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)
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},
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)
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}
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export const spacesNotification = derived(
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[pubkey, checked, userMembership, deriveEvents(repository, {filters: SPACE_FILTERS})],
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([$pubkey, $checked, $userMembership, $events]) => {
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return getMembershipUrls($userMembership).some(url => {
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const path = makeSpacePath(url)
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const lastChecked = max([$checked["*"], $checked[path]])
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const [latestEvent] = sortBy($e => -$e.created_at, $events)
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return latestEvent?.pubkey !== $pubkey && lt(lastChecked, latestEvent?.created_at)
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})
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},
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)
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