refactor(store): use context api for store access

src/components/Controls.svelte

@@ -29,17 +29,16 @@
 </div>
 
 <script>
-    import {
-        paused,
-        canPrevious,
-        canNext,
-        selectPrevious,
-        selectNext,
-        loading
-    } from '/store.js'
+    import { getContext } from 'svelte'
     import Volume from '/components/Volume'
     import PlayPause from '/components/icons/controls/PlayPause'
     import Prev from '/components/icons/controls/Prev'
     import Next from '/components/icons/controls/Next'
     import IconMenu from '/components/icons/Menu'
+
+    const paused = getContext('paused')
+    const canPrevious = getContext('canPrevious')
+    const canNext = getContext('canNext')
+    const selectPrevious = getContext('selectPrevious')
+    const selectNext = getContext('selectNext')
 </script>

src/components/Queue.svelte

@@ -28,9 +28,15 @@
 </div>
 
 <script>
-    import { queue, next, current, enqueueing, select } from '/store.js'
+    import { getContext } from 'svelte'
     import DistanceDate from '/components/DistanceDate.svelte'
 
+    const current = getContext('current')
+    const enqueueing = getContext('enqueueing')
+    const next = getContext('next')
+    const queue = getContext('queue')
+    const select = getContext('select')
+
     $: history = $queue.filter(x => x !== $next).reverse()
 </script>
 

src/components/Radio.svelte

@@ -17,15 +17,121 @@
 </div>
 
 <script>
+    import { setContext } from 'svelte'
     import Header from '/components/layout/Header.svelte'
     import Footer from '/components/layout/Footer.svelte'
     import Queue from '/components/Queue.svelte'
     import Viewer from '/components/Viewer.svelte'
-
-    import { queue, next, current, select } from '/store.js'
+    import { get, writable, writableLocalStorage, derived, scan, wait, startWith, distinct } from '/services/store.js'
+    import { radioIterator, radioShareIterator } from '/services/radio.js'
+    import DeepSet from '/services/deep-set.js'
 
     export let share
 
+    const cache = new DeepSet()
+
+    const domain = writableLocalStorage('domain', 'eldritch.cafe')
+
+    const hashtags = writableLocalStorage('hashtags', [
+        'np',
+        'nowplaying',
+        'tootradio',
+        'pouetradio'
+    ])
+
+    const paused = writable(true)
+    const muted = writableLocalStorage('muted', false)
+    const volume = writableLocalStorage('volume', 100)
+
+    const current = writable(null)
+    const enqueueing = writable(false)
+    const loading = writable(false)
+
+
+
+    const iterator = derived([domain, hashtags], ([$domain, $hashtags], set) => {
+        const iterator = share == null
+            ? radioIterator($domain, $hashtags, cache)
+            // this is a bit dump because we always requeue the shared track
+            : radioShareIterator(share, $domain, $hashtags, cache)
+
+        set(iterator)
+
+        return () => {
+            iterator.return()
+        }
+    }, null)
+
+    const next = derived([iterator, current], ([$iterator, $current]) => ({ $iterator, $current }))
+        .pipe(scan(($nextPromise, { $iterator, $current }) => {
+            return $nextPromise.then($next => {
+                if ($next == null || $next === $current) {
+                    enqueueing.set(true)
+                    return $iterator.next().then(({ done, value }) => {
+                        enqueueing.set(false)
+                        return value
+                    })
+                } else {
+                    return $nextPromise
+                }
+            })
+        }, Promise.resolve(null)))
+        .pipe(wait(x => x))
+        // distinct but with strict check
+        .pipe(distinct())
+        .pipe(startWith(null))
+
+
+    const queue = next
+        .pipe(scan((a, x) => x == null ? a : [...a, x], []))
+
+    const index = derived([queue, current], ([$queue, $current]) => {
+        const i = $queue.indexOf($current)
+        return i === -1 ? null : i
+    })
+
+    const canPrevious = derived([queue, index], ([$queue, $index]) => $index !== null && $index > 0)
+    const canNext = derived([queue, index], ([$queue, $index]) => $index !== null && $index < $queue.length - 1)
+
+
+    const select = track => {
+        console.log(`Select ${track.title}`)
+        current.set(track)
+    }
+
+    const selectPrevious = () => {
+        if (get(canPrevious)) {
+            const $queue = get(queue)
+            const $index = get(index)
+            select($queue[$index - 1])
+        }
+    }
+
+    const selectNext = () => {
+        if (get(canNext)) {
+            const $queue = get(queue)
+            const $index = get(index)
+            select($queue[$index + 1])
+        }
+    }
+
+    setContext('paused', paused)
+    setContext('muted', muted)
+    setContext('volume', volume)
+    setContext('domain', domain)
+    setContext('hashtags', hashtags)
+    setContext('current', current)
+    setContext('loading', loading)
+    setContext('enqueueing', enqueueing)
+    setContext('iterator', iterator)
+    setContext('next', next)
+    setContext('queue', queue)
+    setContext('canPrevious', canPrevious)
+    setContext('canNext', canNext)
+    setContext('select', select)
+    setContext('selectPrevious', selectPrevious)
+    setContext('selectNext', selectNext)
+
     $: if ($queue.length === 1 && $next != null && $current == null) {
         select($next)
     }

src/components/Viewer.svelte

@@ -43,13 +43,19 @@
 
 
 <script>
-    import { get } from 'svelte/store'
+    import { getContext } from 'svelte'
     import Controls from '/components/Controls.svelte'
     import IconReduce from '/components/icons/player/Reduce.svelte'
     import IconHeart from '/components/icons/Heart.svelte'
     import YoutubePlayer from '/components/YoutubePlayer'
     import Progress from '/components/player/Progress'
-    import { paused, muted, volume, current, selectNext, loading } from '/store.js'
+
+    const paused = getContext('paused')
+    const muted = getContext('muted')
+    const volume = getContext('volume')
+    const current = getContext('current')
+    const loading = getContext('loading')
+    const selectNext = getContext('selectNext')
 
     let ready = null
     let ended = null

src/components/Volume.svelte

@@ -12,8 +12,10 @@
 </svg>
 
 <script>
-    import { volume } from '/store.js'
+    import { getContext } from 'svelte'
+
+    const volume = getContext('volume')
 
     // to fix visual glitch
-    $: volumePercent = $volume ? $volume -2 : 0
+    $: volumePercent = $volume - 2
 </script>

src/components/icons/controls/PlayPause.svelte

@@ -9,9 +9,9 @@
 </button>
 
 <script>
-    import {
-        paused,
-        current,
-        loading
-    } from '/store.js'
+    import { getContext } from 'svelte'
+
+    const paused = getContext('paused')
+    const current = getContext('current')
+    const loading = getContext('loading')
 </script>

src/services/mastodon.js

@@ -18,6 +18,10 @@ export const fetchStatus = (domain, id) => fetch(`https://${domain}/api/v1/statu
     .then(response => response.json())
     .then(status => processStatus(domain, status))
 
+export async function* statusIterator({ domain, id }) {
+    yield await fetchStatus(domain, id)
+}
+
 // Observable<{ domain : string, hashtag : string, status : Status}>
 export const hashtagStreamingObservable = (domain, hashtag) => {
     return new Observable(observer => {

src/services/radio.js

@@ -1,9 +1,9 @@
-import { asyncPrepend } from 'iter-tools'
-import { hashtagsIterator } from '/services/mastodon.js'
+import { asyncConcat } from 'iter-tools'
+import { hashtagsIterator, statusIterator } from '/services/mastodon.js'
 import { tracksIterator } from '/services/misc.js'
 
 export const radioIterator = (domain, hashtags, cache) =>
     tracksIterator(hashtagsIterator(domain, hashtags), cache)
 
-export const radioShareIterator = (track, domain, hashtags, cache) =>
-    tracksIterator(asyncPrepend(track, hashtagsIterator(domain, hashtags)), cache)
+export const radioShareIterator = (refererCredentials, domain, hashtags, cache) =>
+    tracksIterator(asyncConcat(statusIterator(refererCredentials), hashtagsIterator(domain, hashtags)), cache)

src/store.js

@@ -1,90 +0,0 @@
-import { get, writable, derived, scan, wait, startWith, writableLocalStorage } from '/services/store.js'
-import { radioIterator, radioShareIterator } from '/services/radio.js'
-import DeepSet from '/services/deep-set.js'
-import { distinct } from './services/store'
-
-
-const cache = new DeepSet()
-
-export const domain = writableLocalStorage('domain', 'eldritch.cafe')
-
-export const hashtags = writableLocalStorage('hashtags', [
-    'np',
-    'nowplaying',
-    'tootradio',
-    'pouetradio'
-])
-
-export const paused = writable(true)
-export const muted = writableLocalStorage('muted', false)
-export const volume = writableLocalStorage('volume', 100)
-
-export const current = writable(null)
-export const enqueueing = writable(false)
-
-
-export const iterator = derived([domain, hashtags], ([$domain, $hashtags], set) => {
-    const iterator = radioIterator($domain, $hashtags, cache)
-    set(iterator)
-
-    return () => {
-        iterator.return()
-    }
-}, null)
-
-
-export const next = derived([iterator, current], ([$iterator, $current]) => ({ $iterator, $current }))
-    .pipe(scan(($nextPromise, { $iterator, $current }) => {
-        return $nextPromise.then($next => {
-            if ($next == null || $next === $current) {
-                enqueueing.set(true)
-                return $iterator.next().then(({ done, value }) => {
-                    enqueueing.set(false)
-                    return value
-                })
-            } else {
-                return $nextPromise
-            }
-        })
-    }, Promise.resolve(null)))
-    .pipe(wait(x => x))
-    // distinct but with strict check
-    .pipe(distinct())
-    .pipe(startWith(null))
-
-
-export const queue = next
-    .pipe(scan((a, x) => x == null ? a : [...a, x], []))
-
-
-export const loading = writable(false)
-
-const index = derived([queue, current], ([$queue, $current]) => {
-    const i = $queue.indexOf($current)
-    return i === -1 ? null : i
-})
-
-export const canPrevious = derived([queue, index], ([$queue, $index]) => $index !== null && $index > 0)
-export const canNext = derived([queue, index], ([$queue, $index]) => $index !== null && $index < $queue.length - 1)
-
-
-export const select = track => {
-    console.log(`Select ${track.title}`)
-    current.set(track)
-}
-
-export const selectPrevious = () => {
-    if (get(canPrevious)) {
-        const $queue = get(queue)
-        const $index = get(index)
-        select($queue[$index - 1])
-    }
-}
-
-export const selectNext = () => {
-    if (get(canNext)) {
-        const $queue = get(queue)
-        const $index = get(index)
-        select($queue[$index + 1])
-    }
-}