refactor timeline to use actions

routes/_actions/timeline.js

@@ -0,0 +1,94 @@
+import { store } from '../_utils/store'
+import { database } from '../_utils/database/database'
+import { getTimeline } from '../_utils/mastodon/timelines'
+import { toast } from '../_utils/toast'
+import { StatusStream } from '../_utils/mastodon/StatusStream'
+import { getInstanceInfo } from '../_utils/mastodon/instance'
+import { mark, stop } from '../_utils/marks'
+import { mergeStatuses } from '../_utils/timelines'
+
+const FETCH_LIMIT = 20
+
+let statusStream
+
+async function fetchStatuses(instanceName, accessToken, timelineName, lastStatusId, online) {
+  mark('fetchStatuses')
+  let statuses
+  if (!online) {
+    statuses = await database.getTimeline(instanceName, timelineName, lastStatusId, FETCH_LIMIT)
+  } else {
+    try {
+      statuses = await getTimeline(instanceName, accessToken, timelineName, lastStatusId, FETCH_LIMIT)
+      /* no await */ database.insertStatuses(instanceName, timelineName, statuses)
+    } catch (e) {
+      console.error(e)
+      toast.say('Internet request failed. Showing offline content.')
+      statuses = await database.getTimeline(instanceName, timelineName, lastStatusId, FETCH_LIMIT)
+    }
+  }
+  stop('fetchStatuses')
+  return statuses
+}
+
+async function addStatuses(instanceName, timelineName, newStatuses) {
+  mark('addStatuses')
+  let newStatusIds = newStatuses.map(status => status.id)
+  let oldStatusIds = store.getForTimeline(instanceName, timelineName, 'statusIds') || []
+  let merged = mergeStatuses(oldStatusIds, newStatusIds)
+  store.setForTimeline(instanceName, timelineName, { statusIds: merged })
+  stop('addStatuses')
+}
+
+async function fetchStatusesAndPossiblyFallBack() {
+  mark('fetchStatusesAndPossiblyFallBack')
+  let timelineName = store.get('currentTimeline')
+  let instanceName = store.get('currentInstance')
+  let accessToken = store.get('accessToken')
+  let lastStatusId = store.get('lastStatusId')
+  let online = store.get('online')
+
+  let newStatuses = await fetchStatuses(instanceName, accessToken, timelineName, lastStatusId, online)
+  addStatuses(instanceName, timelineName, newStatuses)
+  stop('fetchStatusesAndPossiblyFallBack')
+}
+
+export function initializeTimeline() {
+  mark('initializeTimeline')
+  let instanceName = store.get('currentInstance')
+  let timeline = store.get('currentTimeline')
+  requestAnimationFrame(() => {
+    requestAnimationFrame(() => {
+      store.setForTimeline(instanceName, timeline, {initialized: true})
+    })
+  })
+  stop('initializeTimeline')
+}
+
+export async function setupTimeline() {
+  mark('addStatuses')
+  let timelineName = store.get('currentTimeline')
+  let instanceName = store.get('currentInstance')
+  let accessToken = store.get('accessToken')
+  if (!store.get('statusIds').length) {
+    await fetchStatusesAndPossiblyFallBack()
+  }
+  /* no await */ getInstanceInfo(instanceName).then(instanceInfo => database.setInstanceInfo(instanceName, instanceInfo))
+  let instanceInfo = await database.getInstanceInfo(instanceName)
+  if (statusStream) {
+    statusStream.close()
+  }
+  statusStream = new StatusStream(instanceInfo.urls.streaming_api, accessToken, timelineName, {
+    onMessage(message) {
+      console.log('message', message)
+    }
+  })
+  stop('addStatuses')
+}
+
+export async function fetchStatusesOnScrollToBottom() {
+  let timelineName = store.get('currentTimeline')
+  let instanceName = store.get('currentInstance')
+  store.setForTimeline(instanceName, timelineName, { runningUpdate: true })
+  await fetchStatusesAndPossiblyFallBack()
+  store.setForTimeline(instanceName, timelineName, { runningUpdate: false })
+}

routes/_components/Layout.html

@@ -1,3 +1,4 @@
+<:Window bind:online />
 <Nav :page :dynamicPage :dynamicHref :dynamicIcon :dynamicLabel/>
 
 {{#if virtual}}
@@ -19,6 +20,11 @@
   import { store } from '../_utils/store'
 
 	export default {
+	  oncreate() {
+	    this.observe('online', online => {
+	      this.store.set({online: online})
+      })
+    },
 		components: {
 		  VirtualListContainer,
 			Nav

routes/_components/timeline/Timeline.html

@@ -1,4 +1,3 @@
-<:Window bind:online />
 <div class="timeline" role="feed" aria-label="{{label}}">
   <VirtualList component="{{StatusListItem}}"
                :makeProps
@@ -18,41 +17,16 @@
 </style>
 <script>
   import { store } from '../../_utils/store'
-  import { getTimeline } from '../../_utils/mastodon/timelines'
-  import { getInstanceInfo } from '../../_utils/mastodon/instance'
   import StatusListItem from './StatusListItem.html'
   import LoadingFooter from './LoadingFooter.html'
   import VirtualList from '../virtualList/VirtualList.html'
-  import { splice, push } from 'svelte-extras'
-  import { mergeStatuses } from '../../_utils/statuses'
-  import { mark, stop } from '../../_utils/marks'
   import { timelines } from '../../_static/timelines'
-  import { toast } from '../../_utils/toast'
   import { database } from '../../_utils/database/database'
-  import { StatusStream } from '../../_utils/mastodon/StatusStream'
-
-  const FETCH_LIMIT = 20
+  import { initializeTimeline, fetchStatusesOnScrollToBottom, setupTimeline } from '../../_actions/timeline'
 
   export default {
     async oncreate() {
-      let timeline = this.get('timeline')
-      let instanceName = this.store.get('currentInstance')
-      let accessToken = this.store.get('accessToken')
-      if (!this.store.get('statusIds').length) {
-        this.addStatuses(await this.fetchStatusesAndPossiblyFallBack())
-      }
-      /* no await */ getInstanceInfo(instanceName).then(instanceInfo => database.setInstanceInfo(instanceName, instanceInfo))
-      let instanceInfo = await database.getInstanceInfo(instanceName)
-      this._statusStream = new StatusStream(instanceInfo.urls.streaming_api, accessToken, timeline, {
-        onMessage(message) {
-          console.log('message', message)
-        }
-      })
-    },
-    ondestroy() {
-      if (this._statusStream) {
-        this._statusStream.close()
-      }
+      setupTimeline()
     },
     data: () => ({
       StatusListItem: StatusListItem,
@@ -77,69 +51,17 @@
       VirtualList
     },
     methods: {
-      splice: splice,
-      push: push,
       initialize() {
         if (this.store.get('initialized') || !this.store.get('statusIds') || !this.store.get('statusIds').length) {
           return
         }
-        let instanceName = this.store.get('currentInstance')
-        let timeline = this.get('timeline')
-        requestAnimationFrame(() => {
-          requestAnimationFrame(() => {
-            this.store.setForTimeline(instanceName, timeline, {initialized: true})
-          })
-        })
+        initializeTimeline()
       },
       async onScrollToBottom() {
-        if (!this.store.get('initialized')) {
+        if (!this.store.get('initialized') || this.store.get('runningUpdate')) {
           return
         }
-        if (this.store.get('runningUpdate')) {
-          return
-        }
-        mark('onScrollToBottom')
-        let timeline = this.get('timeline')
-        let instanceName = this.store.get('currentInstance')
-        this.store.setForTimeline(instanceName, timeline, { runningUpdate: true })
-        let newStatuses = await this.fetchStatusesAndPossiblyFallBack()
-        this.store.setForTimeline(instanceName, timeline, { runningUpdate: false })
-        this.addStatuses(newStatuses)
-        stop('onScrollToBottom')
-      },
-      addStatuses(newStatuses) {
-        console.log('addStatuses()')
-        let instanceName = this.store.get('currentInstance')
-        let timeline = this.get('timeline')
-        let statusIds = this.store.get('statusIds')
-        if (!statusIds) {
-          return
-        }
-        /* no await */ database.insertStatuses(instanceName, timeline, newStatuses)
-        let newStatusIds = newStatuses.map(status => status.id)
-        let merged = mergeStatuses(statusIds, newStatusIds)
-        this.store.setForTimeline(instanceName, timeline, { statusIds: merged })
-      },
-      async fetchStatusesAndPossiblyFallBack() {
-        let online = this.get('online')
-        let instanceName = this.store.get('currentInstance')
-        let instanceData = this.store.get('currentInstanceData')
-        let timeline = this.get('timeline')
-        let lastStatusId = this.store.get('lastStatusId')
-        let statuses
-        if (!online) {
-          statuses = await database.getTimeline(instanceName, timeline, lastStatusId, FETCH_LIMIT)
-        } else {
-          try {
-            statuses = await getTimeline(instanceName, instanceData.access_token, timeline, lastStatusId, FETCH_LIMIT)
-            /* no await */ database.insertStatuses(instanceName, timeline, statuses)
-          } catch (e) {
-            console.error(e)
-            toast.say('Internet request failed. Showing offline content.')
-            statuses = await database.getTimeline(instanceName, timeline, lastStatusId, FETCH_LIMIT)
-          }
-        }
-        return statuses
+        fetchStatusesOnScrollToBottom()
       }
     }
   }

routes/_utils/store.js

@@ -52,6 +52,12 @@ class PinaforeStore extends Store {
     timelines[instanceName] = timelineData
     this.set({timelines: timelines})
   }
+
+  getForTimeline(instanceName, timelineName, key) {
+    let timelines = this.get('timelines') || {}
+    let timelineData = timelines[instanceName] || {}
+    return (timelineData[timelineName] || {})[key]
+  }
 }
 
 const store = new PinaforeStore({