Notification (#934)

Signed-off-by: Denis Bykhov <80476319+BykhovDenis@users.noreply.github.com>

plugins/notification-resources/src/index.ts

@@ -0,0 +1,21 @@
+//
+// Copyright © 2020, 2021 Anticrm Platform Contributors.
+// Copyright © 2021, 2022 Hardcore Engineering Inc.
+//
+// Licensed under the Eclipse Public License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License. You may
+// obtain a copy of the License at https://www.eclipse.org/legal/epl-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import { Resources } from '@anticrm/platform'
+
+export default async (): Promise<Resources> => ({})
+
+export * from './utils'

plugins/notification-resources/src/utils.ts

@@ -0,0 +1,89 @@
+//
+// Copyright © 2020, 2021 Anticrm Platform Contributors.
+// Copyright © 2021, 2022 Hardcore Engineering Inc.
+//
+// Licensed under the Eclipse Public License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License. You may
+// obtain a copy of the License at https://www.eclipse.org/legal/epl-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import { Class, Doc, getCurrentAccount, Ref, Timestamp } from '@anticrm/core'
+import notification, { LastView } from '@anticrm/notification'
+import { createQuery, getClient } from '@anticrm/presentation'
+import { writable, Writable } from 'svelte/store'
+
+/**
+ * @public
+ */
+export class NotificationClient {
+  protected static _instance: NotificationClient | undefined = undefined
+  private readonly lastViews = new Map<Ref<Doc>, LastView>()
+  private readonly lastViewsStore = writable(new Map<Ref<Doc>, Timestamp>())
+
+  private readonly lastViewQuery = createQuery()
+
+  private constructor () {
+    this.lastViewQuery.query(notification.class.LastView, { user: getCurrentAccount()._id }, (result) => {
+      const res: Map<Ref<Doc>, Timestamp> = new Map<Ref<Doc>, Timestamp>()
+      result.forEach((p) => {
+        res.set(p.attachedTo, p.lastView)
+        this.lastViews.set(p.attachedTo, p)
+      })
+      this.lastViewsStore.set(res)
+    })
+  }
+
+  static getClient (): NotificationClient {
+    if (NotificationClient._instance === undefined) {
+      NotificationClient._instance = new NotificationClient()
+    }
+    return NotificationClient._instance
+  }
+
+  getLastViews (): Writable<Map<Ref<Doc>, Timestamp>> {
+    return this.lastViewsStore
+  }
+
+  async updateLastView (
+    _id: Ref<Doc>,
+    _class: Ref<Class<Doc>>,
+    time?: Timestamp,
+    force: boolean = false
+  ): Promise<void> {
+    const client = getClient()
+    const user = getCurrentAccount()._id
+    const lastView = time ?? new Date().getTime()
+    const current = this.lastViews.get(_id)
+    if (current !== undefined) {
+      if (current.lastView < lastView || force) {
+        await client.updateDoc(current._class, current.space, current._id, {
+          lastView: lastView
+        })
+      }
+    } else if (force) {
+      await client.createDoc(notification.class.LastView, notification.space.Notifications, {
+        user,
+        lastView,
+        attachedTo: _id,
+        attachedToClass: _class,
+        collection: 'lastViews'
+      })
+    }
+  }
+
+  async unsubscribe (_id: Ref<Doc>): Promise<void> {
+    const client = getClient()
+    const user = getCurrentAccount()._id
+    const current = await client.findOne(notification.class.LastView, { attachedTo: _id, user })
+    if (current !== undefined) {
+      await client.removeDoc(current._class, current.space, current._id)
+    }
+  }
+}