Jon Staab
42 lines
1.0 KiB
TypeScript
42 lines
1.0 KiB
TypeScript
import {throttle} from 'throttle-debounce'
|
|
import {derived} from 'svelte/store'
|
|
import {inc} from '@welshman/lib'
|
|
import {custom} from '@welshman/store'
|
|
import {createSearch} from './util'
|
|
import {repository} from './core'
|
|
|
|
export type Topic = {
|
|
name: string
|
|
count: number
|
|
}
|
|
|
|
export const topics = custom<Topic[]>(setter => {
|
|
const getTopics = () => {
|
|
const topics = new Map<string, number>()
|
|
for (const tagString of repository.eventsByTag.keys()) {
|
|
if (tagString.startsWith("t:")) {
|
|
const topic = tagString.slice(2).toLowerCase()
|
|
|
|
topics.set(topic, inc(topics.get(topic)))
|
|
}
|
|
}
|
|
|
|
return Array.from(topics.entries()).map(([name, count]) => ({name, count}))
|
|
}
|
|
|
|
setter(getTopics())
|
|
|
|
const onUpdate = throttle(3000, () => setter(getTopics()))
|
|
|
|
repository.on("update", onUpdate)
|
|
|
|
return () => repository.off("update", onUpdate)
|
|
})
|
|
|
|
export const topicSearch = derived(topics, $topics =>
|
|
createSearch($topics, {
|
|
getValue: (topic: Topic) => topic.name,
|
|
fuseOptions: {keys: ["name"]},
|
|
}),
|
|
)
|