refact status processing
This commit is contained in:
wryk
parent
307331855d
commit
49deded9bd
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@ -3,8 +3,8 @@
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{#if $next}
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<div class="entry" on:click={() => select($next)}>
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<div class="title">{$next.metadata.title}</div>
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<div class="user">by {$next.status.account.acct}</div>
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<div class="title">{$next.title}</div>
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<div class="user">by {$next.username}</div>
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</div>
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{/if}
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@ -15,10 +15,10 @@
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<h6>HISTORY</h6>
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{#each history as track (track.status.id)}
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{#each history as track}
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<div class="entry" class:active={track === $current} on:click={() => select(track)}>
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<div class>{track.metadata.title}</div>
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<div class>shared by {track.status.account.acct}</div>
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<div class>{track.title}</div>
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<div class>shared by {track.username}</div>
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</div>
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{/each}
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</div>
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@ -1,5 +1,5 @@
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<svelte:head>
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<title>{`${ $current ? `${$current.metadata.title} ∴ ` : ''}Eldritch Radio`}</title>
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<title>{`${ $current ? `${$current.title} ∴ ` : ''}Eldritch Radio`}</title>
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</svelte:head>
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<div class="app container">
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@ -28,8 +28,8 @@
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import Controls from '/components/Controls.svelte'
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import Queue from '/components/Queue.svelte'
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import Viewer from '/components/Viewer.svelte'
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import { hashtagIterator, combinedIterator } from '/services/mastodon.js'
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import { mkTracksIterator } from '/services/misc.js'
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import { hashtagsIterator } from '/services/mastodon.js'
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import { tracksIterator } from '/services/misc.js'
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import { domain, hashtags, queue, next, current, enqueueing, select } from '/store.js'
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@ -37,13 +37,10 @@
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let currentUnsubcribe = null
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onMount(async () => {
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// const iterator = mkTracksIterator(hashtagIterator(get(domain), get(hashtags)[0]))
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const domainValue = get(domain)
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const hashtagsValue = get(hashtags)
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const iterator = combinedIterator(
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hashtagsValue.map(hashtag => mkTracksIterator(hashtagIterator(domainValue, hashtag)))
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)
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const iterator = tracksIterator(hashtagsIterator(domainValue, hashtagsValue))
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const { value: first } = await iterator.next()
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@ -1,7 +1,7 @@
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<div class="playerBig">
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<div class="playerBig__player">
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<YoutubePlayer
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id={$current ? $current.data.id : null}
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id={$current ? $current.media.credentials.id : null}
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class="playerBig__iframe"
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paused={$paused}
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muted={$muted}
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@ -38,7 +38,6 @@
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import { secondsToElapsedTime } from '/services/misc.js'
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import { paused, muted, volume, current, selectNext, loading } from '/store.js'
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let ready = null
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let ended = null
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let error = null
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@ -1,10 +1,8 @@
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import Observable from 'core-js-pure/features/observable'
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import { observableToAsyncIterator } from '/services/misc.js'
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import { observableToAsyncIterator, raceIterator } from '/services/misc.js'
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const LINK_RE = /<(.+?)>; rel="(\w+)"/gi
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export const fetchStatus = (domain, id) => fetch(`https://${domain}/api/v1/statuses/${id}`).then(x => x.json())
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function parseLinkHeader(link) {
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const links = {}
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@ -15,6 +13,9 @@ function parseLinkHeader(link) {
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return links
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}
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export const fetchStatus = (domain, id) => fetch(`https://${domain}/api/v1/statuses/${id}`).then(x => x.json())
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// Observable<{ domain : string, hashtag : string, status : Status}>
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export const hashtagStreamingObservable = (domain, hashtag) => {
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return new Observable(observer => {
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const onOpen = () => {
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@ -24,7 +25,7 @@ export const hashtagStreamingObservable = (domain, hashtag) => {
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const onStatus = event => {
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const status = JSON.parse(event.data)
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console.log(`Streaming ${domain} #${hashtag} : status ${status.id}`)
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observer.next(status)
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observer.next(processStatus(domain, status))
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}
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const onError = error => {
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@ -60,29 +61,19 @@ export async function* hashtagTimelineIterator (domain, hashtag) {
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console.log(`Timeline ${domain} #${hashtag} : fetched ${statuses.length} statuses`)
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yield* statuses
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yield* statuses.map(status => processStatus(domain, status))
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}
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}
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export async function* hashtagIterator(domain, hashtag) {
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const newerIterator = observableToAsyncIterator(hashtagStreamingObservable(domain, hashtag))
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const olderIterator = hashtagTimelineIterator(domain, hashtag)
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const iterators = [newerIterator, olderIterator]
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const values = iterators.map(iterator => iterator.next())
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while (true) {
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const promises = values.map((promise, index) => promise.then(result => ({ index, result })))
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const { index, result: { done, value } } = await Promise.race(promises)
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values[index] = iterators[index].next()
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console.log(`Resolver ${domain} #${hashtag} : resolved with iterator ${index}`)
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yield value
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}
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export const hashtagIterator = (domain, hashtag) => {
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return raceIterator([
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observableToAsyncIterator(hashtagStreamingObservable(domain, hashtag)),
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hashtagTimelineIterator(domain, hashtag)
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])
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}
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export async function* combinedIterator(iterators) {
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export async function* hashtagsIterator (domain, hashtags) {
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const iterators = hashtags.map(hashtag => hashtagIterator(domain, hashtag))
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const values = iterators.map(iterator => iterator.next())
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while (true) {
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@ -91,14 +82,24 @@ export async function* combinedIterator(iterators) {
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const sorted = promisesValues
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.sort((a, b) =>{
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new Date(a.result.value.status.created_at) - new Date(b.result.value.status.created_at)
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a.result.value.date - b.result.value.date
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})
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const { index, result: { done, value } } = sorted[0]
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values[index] = iterators[index].next()
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console.log(`CombinedResolver : resolved with iterator ${index}`)
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yield value
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}
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}
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const processStatus = (domain, status) => ({
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title: null,
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username: status.account.username,
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date: new Date(status.createdAt),
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content: status.content,
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referer: {
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url: status.url,
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credentials: { type: 'mastodon', domain, id: status.id }
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},
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media: null
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})
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@ -1,5 +1,5 @@
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import getUrls from 'get-urls'
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import { execPipe, asyncFilter, asyncMap } from 'iter-tools'
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import { execPipe, asyncFilter, asyncMap, map, findOr } from 'iter-tools'
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export const tap = f => x => {
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f(x)
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@ -80,65 +80,159 @@ export const secondsToElapsedTime = (seconds) => {
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.join(':')
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}
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export async function* mkTracksIterator(statusesIterator) {
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const knownStatus = new Set()
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const knownYoutube = new Set()
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export async function* raceIterator(iterators) {
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const values = iterators.map(iterator => iterator.next())
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const tracks = execPipe(
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while (true) {
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const promises = values.map((promise, index) => promise.then(result => ({ index, result })))
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const { index, result: { done, value } } = await Promise.race(promises)
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values[index] = iterators[index].next()
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yield value
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}
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}
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const mkMapSet = () => ({ set: new Set(), children: new Map() })
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const pathSet = () => {
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const root = mkMapSet()
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const has = (keys, value) => {
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let x = root
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for (const key of keys) {
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if (x.children.has(key)) {
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x = x.children.get(key)
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} else {
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return false
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}
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}
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return x.set.has(value)
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}
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const add = (keys, value) => {
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let x = root
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for (const key of keys) {
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if (!x.children.has(key)) {
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x.children.set(key, mkMapSet())
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}
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x = x.children.get(key)
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}
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x.set.add(value)
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}
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return { root, has, add }
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}
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export async function* tracksIterator(statusesIterator) {
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const known = pathSet()
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yield* execPipe(
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statusesIterator,
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asyncFilter(status => {
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if (!status) {
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asyncFilter(knownByReferer(known)),
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asyncMap(processReferer),
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asyncFilter(knownByMedia(known)),
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asyncMap(processMedia)
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)
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}
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const knownByReferer = known => track => {
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if (!track) {
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console.error(`No status, should not happen here`)
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return false
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} else {
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if (knownStatus.has(status.id)) {
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console.log(`Drop already processed status ${status.id}`)
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switch (track.referer.credentials.type) {
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default:
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throw new Error()
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case 'mastodon':
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const path = [
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'referer',
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'mastodon',
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track.referer.credentials.domain
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]
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const id = track.referer.credentials.id
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if (known.has(path, id)) {
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console.log(`Drop already processed referer ${id}`)
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return false
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} else {
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knownStatus.add(status.id)
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known.add(path, id)
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return true
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}
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}
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}),
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asyncMap(status => ({ status, data: mkData(status) })),
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asyncFilter(({ status, data }) => {
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if (!data) {
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console.log(`Drop non processable status ${status.id}`)
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}
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}
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const knownByMedia = known => track => {
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if (track !== null) {
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switch (track.media.credentials.type) {
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default:
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throw new Error()
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case 'youtube':
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const path = [
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'media',
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'youtube'
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]
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const id = track.media.credentials.id
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if (known.has(path, id)) {
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console.log(`Drop already processed media ${id}`)
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return false
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} else {
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if (knownYoutube.has(data.id)) {
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console.log(`Drop already processed youtube ${data.id}`)
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return false
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} else {
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knownYoutube.add(data.id)
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known.add(path, id)
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return true
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}
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}
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}),
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asyncMap(async ({ status, data }) => ({ status, data, metadata: await mkMetadata(data) }))
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} else {
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return false
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}
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}
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const processReferer = track => {
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const urls = getUrls(track.content)
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const media = execPipe(
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urls,
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map(parseSource),
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findOr(null, x => x !== null)
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)
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yield* tracks
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}
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function mkData(status)
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{
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const urls = getUrls(status.content)
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for (const urlAsString of urls) {
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const url = new URL(urlAsString)
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if (['youtube.com', 'm.youtube.com', 'music.youtube.com'].includes(url.hostname) && url.searchParams.has('v')) {
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return { url: urlAsString, id: url.searchParams.get('v') }
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} else if (url.hostname === 'youtu.be') {
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return { url: urlAsString, id: url.pathname.substring(1) }
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}
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}
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if (media) {
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return { ...track, media }
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} else {
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return null
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}
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}
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async function mkMetadata(entry) {
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return fetch(`https://noembed.com/embed?url=https://www.youtube.com/watch?v=${entry.id}`)
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.then(response => response.json())
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const processMedia = async track => {
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const metadata = await fetchMetadata(track.media)
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return { ...track, title: metadata.title }
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}
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const parseSource = (url) => {
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const { hostname, pathname, searchParams } = new URL(url)
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if (['youtube.com', 'm.youtube.com', 'music.youtube.com'].includes(hostname) && searchParams.has('v')) {
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return { url, credentials: { type: 'youtube', id: searchParams.get('v') } }
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} else if (hostname === 'youtu.be') {
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return { url, credentials: { type: 'youtube', id: pathname.substring(1) } }
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} else {
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return null
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}
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}
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const fetchMetadata = (media) => {
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switch (media.credentials.type) {
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case 'youtube':
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return fetch(`https://noembed.com/embed?url=https://www.youtube.com/watch?v=${media.credentials.id}`)
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.then(response => response.json())
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}
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}
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@ -31,7 +31,7 @@ export const canNext = derived([queue, index], ([$queue, $index]) => $index !==
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export const select = track => {
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console.log(`Select ${track.metadata.title}`)
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console.log(`Select ${track.title}`)
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current.set(track)
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}
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