From cd10193d3ebe6ee1431f2f903fbfa36b152dd378 Mon Sep 17 00:00:00 2001
From: wryk <wryk@wryk.moe>
Date: Tue, 14 Jan 2020 20:22:09 +0100
Subject: [PATCH] wip state refact

---
 package-lock.json              |  5 ++
 package.json                   |  1 +
 src/components/Controls.svelte |  2 +-
 src/components/Queue.svelte    |  2 +-
 src/components/Viewer.svelte   |  2 +-
 src/{ => services}/store.js    | 80 ++++++++++++++++++++------------
 src/stores.js                  | 84 ++++++++++++++++++++++++++++++++++
 src/util.js                    |  1 +
 8 files changed, 144 insertions(+), 33 deletions(-)
 rename src/{ => services}/store.js (56%)
 create mode 100644 src/stores.js

diff --git a/package-lock.json b/package-lock.json
index 9f16a98..26bb1e9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3018,6 +3018,11 @@
         "locate-path": "^3.0.0"
       }
     },
+    "folktale": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/folktale/-/folktale-2.3.2.tgz",
+      "integrity": "sha512-+8GbtQBwEqutP0v3uajDDoN64K2ehmHd0cjlghhxh0WpcfPzAIjPA03e1VvHlxL02FVGR0A6lwXsNQKn3H1RNQ=="
+    },
     "for-in": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/for-in/-/for-in-1.0.2.tgz",
diff --git a/package.json b/package.json
index e20d5b4..a008b50 100644
--- a/package.json
+++ b/package.json
@@ -21,6 +21,7 @@
   "dependencies": {
     "@babel/runtime-corejs3": "^7.7.7",
     "date-fns": "^2.9.0",
+    "folktale": "^2.3.2",
     "get-urls": "^9.2.0",
     "iter-tools": "^7.0.0-rc.0",
     "yt-player": "^3.4.3"
diff --git a/src/components/Controls.svelte b/src/components/Controls.svelte
index f80ded4..10dd45a 100644
--- a/src/components/Controls.svelte
+++ b/src/components/Controls.svelte
@@ -30,7 +30,7 @@
 </div>
 
 <script>
-    import { paused, volume, muted, entry } from '/store.js'
+    import { paused, volume, muted, entry } from '/stores.js'
 </script>
 
 <style>
diff --git a/src/components/Queue.svelte b/src/components/Queue.svelte
index f5106f8..e133d9e 100644
--- a/src/components/Queue.svelte
+++ b/src/components/Queue.svelte
@@ -27,7 +27,7 @@
 
 <script>
     import { onMount } from 'svelte'
-    import { paused, entry as currentEntry, entries } from '/store.js'
+    import { paused, entry as currentEntry, entries } from '/stores.js'
 
     const toggleEntry = (entry) => {
         if (entry !== $currentEntry) {
diff --git a/src/components/Viewer.svelte b/src/components/Viewer.svelte
index faacf70..f33d67a 100644
--- a/src/components/Viewer.svelte
+++ b/src/components/Viewer.svelte
@@ -14,7 +14,7 @@
     import { onMount, onDestroy } from 'svelte'
     import { get } from 'svelte/store'
     import YoutubePlayer from 'yt-player'
-    import { entry, paused, muted, volume } from '/store.js'
+    import { entry, paused, muted, volume } from '/stores.js'
     import { secondsToElapsedTime } from '/util.js'
 
     let element
diff --git a/src/store.js b/src/services/store.js
similarity index 56%
rename from src/store.js
rename to src/services/store.js
index c225f9f..75edd0e 100644
--- a/src/store.js
+++ b/src/services/store.js
@@ -1,49 +1,69 @@
 import { writable, get } from 'svelte/store'
-import * as util from '/util.js'
+import { mkTracksIterator } from '/util.js'
 
-export const domain = writableLocalStorage('domain', 'eldritch.cafe')
-
-export const hashtags = writableLocalStorage('hashtags', [
-    'np',
-    'nowplaying',
-    'tootradio',
-    'pouetradio'
-])
-
-export const paused = writable(false)
-export const muted = writableLocalStorage('muted', false)
-export const volume = writableLocalStorage('volume', 100)
-
-export const entries = entriesStore(get(domain), get(hashtags))
-export const entry = entryStore(entries)
-
-
-
-
-function writableLocalStorage(key, value) {
+export const writableLocalStorage = (key, value) => {
     const item = JSON.parse(localStorage.getItem(key))
     const store = writable(item === null ? value : item)
-    const unsubscribe = store.subscribe(x => localStorage.setItem(key, JSON.stringify(x)))
+
+    store.subscribe(x => localStorage.setItem(key, JSON.stringify(x)))
+
     return store
 }
 
-function entryStore(entries) {
+export const stackStore = (domain, hashtags) => {
+    const tracksIterator = mkTracksIterator(domain, hashtags)
+
+    const store = writable([])
+    const { update, subscribe } = store
+
+    let promise = Promise.resolve()
+    const buffer = []
+
+    const load = async () => {
+
+
+        const n = 5 - buffer.length
+
+        for (let i = 0; i < n; i++) {
+            const iteratorResult = await tracksIterator.next()
+
+            if (iteratorResult.value) {
+                update(entries => [...entries, iteratorResult.value])
+            } else {
+                // iterator don't have new entries for now
+                break
+            }
+        }
+    }
+
+    const unshift = async () => {
+        let promise = promise.then(() => {
+
+        })
+    }
+
+    promise = load()
+
+    return { subscribe, unshift }
+}
+
+export const entryStore = (entriesStore) => {
     const store = writable(null)
     const { set, update, subscribe } = store
 
     const select = (entry) => {
         update(() => entry)
 
-        const entriesList = get(entries)
+        const entriesList = get(entriesStore)
         const index = entriesList.indexOf(entry)
 
         if (index === entriesList.length - 1) {
-            entries.load(1)
+            entriesStore.load(1)
         }
     }
 
     const previous = () => {
-        const entriesList = get(entries)
+        const entriesList = get(entriesStore)
 
         update(currentEntry => {
             const index = entriesList.indexOf(currentEntry)
@@ -53,7 +73,7 @@ function entryStore(entries) {
     }
 
     const next = () => {
-        const entriesList = get(entries)
+        const entriesList = get(entriesStore)
 
         update(oldEntry => {
             if (entriesList.length === 0) {
@@ -79,8 +99,8 @@ function entryStore(entries) {
     return { subscribe, set: select, previous, next }
 }
 
-function entriesStore(domain, hashtags) {
-    const tracksIterator = util.mkTracksIterator(domain, hashtags)
+export const entriesStore = (domain, hashtags) => {
+    const tracksIterator = mkTracksIterator(domain, hashtags)
 
     const store = writable([])
     const { update, subscribe } = store
@@ -99,4 +119,4 @@ function entriesStore(domain, hashtags) {
     }
 
     return { subscribe, load }
-}
+}
\ No newline at end of file
diff --git a/src/stores.js b/src/stores.js
new file mode 100644
index 0000000..986af98
--- /dev/null
+++ b/src/stores.js
@@ -0,0 +1,84 @@
+import { writable, get } from 'svelte/store'
+import { writableLocalStorage, entriesStore, entryStore } from '/services/store.js'
+
+export const domain = writableLocalStorage('domain', 'eldritch.cafe')
+
+export const hashtags = writableLocalStorage('hashtags', [
+    'np',
+    'nowplaying',
+    'tootradio',
+    'pouetradio'
+])
+
+export const paused = writable(false)
+export const muted = writableLocalStorage('muted', false)
+export const volume = writableLocalStorage('volume', 100)
+
+export const entries = entriesStore(get(domain), get(hashtags))
+export const entry = entryStore(entries)
+
+
+
+
+const tracksIterator = mkTracksIterator(get(domain), get(hashtags))
+
+
+
+export const track = writable(null)
+export const queue = writable([])
+export const stack = writable([])
+
+export const state = writable({
+    current: null,
+    queue: []
+})
+
+export const enqueue = () => {
+    const { value: newTrack } = await tracksIterator.next()
+
+    if (!newTrack) {
+        state.update(s => ({ ...s, queue: [...s.queue, newTrack] }))
+    }
+}
+
+export const select = (track) => {
+    state.update(s => ({ ...s, current: track }))
+}
+
+export const selectPrevious = () => {
+    state.update(s => {
+        if (s.current === null) return s
+
+        const
+        return
+    })
+
+    const tracks = get(queue)
+
+    track.update(oldTrack => {
+        const index = tracks.indexOf(oldTrack)
+        return index > 0 ? tracks[index - 1] : null
+    })
+}
+
+export const selectNext = () => {
+    const tracks = get(queue)
+    const oldTrack = get(track)
+
+
+
+    track.update(oldTrack => {
+        const index = tracks.indexOf(oldTrack)
+
+        if (index !== -1 && ) {
+            return null
+        }
+
+        return index !== -1 && index + 1 < tracks.length
+            ? tracks[index + 1]
+            : null
+    })
+
+
+    enqueueIfTrack(track)
+}
diff --git a/src/util.js b/src/util.js
index d646d6c..5640ca3 100644
--- a/src/util.js
+++ b/src/util.js
@@ -37,6 +37,7 @@ export async function* mkStatusesIterator(initialLink) {
 
     while (true) {
         const now = Date.now()
+
         if (latestPreviousFetch + 5 * minute < now) {
             console.log('fetch newer')
             const previous = await fetchTimeline(previousLink)