Only fetch and display a given notification once (#3626)

When fetching:

- Maintain a marker with the position of the newest fetched notification
- Use the marker to determine which notifications to fetch
- Fetch notifications with min_id to ensure that none are lost
- Update the marker as necessary
- Perform a one-time immediate fetch of notifications on startup

When creating notifications:

- Identify each notification with tag=${MastodonNotificationId}, id=${account.id}
- Remove activeNotifications field, it's no longer necessary
- Use the tag/id tuple to reliably identify existing notifications and avoid creating duplicates
- Cancelling notifications for an account must iterate over all the notifications, and individually remove the notifications that exist for that account.
- Limit notifications to a maximum of 40 (excluding summary notifications)
- Remove notifications (oldest first) to get under this limit
- Rate limit notification creation to 1 per second, so the OS won't drop them

Adjust the summary notification:

- Ensure the summary notification and the child notifications have the same group key
- Dismiss the summary notification if there is only one child notification

NotificationClearBroadcastReceiver is no longer needed, so remove it, and the need for deletePendingIntent.

Fixes #3625, #3539
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Nik Clayton 2023-05-13 16:00:28 +02:00 committed by GitHub
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@ -1,42 +0,0 @@
/* Copyright 2018 Conny Duck
*
* This file is a part of Tusky.
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 3 of the
* License, or (at your option) any later version.
*
* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*
* You should have received a copy of the GNU General Public License along with Tusky; if not,
* see <http://www.gnu.org/licenses>. */
package com.keylesspalace.tusky.receiver
import android.content.BroadcastReceiver
import android.content.Context
import android.content.Intent
import com.keylesspalace.tusky.components.notifications.NotificationHelper
import com.keylesspalace.tusky.db.AccountManager
import dagger.android.AndroidInjection
import javax.inject.Inject
class NotificationClearBroadcastReceiver : BroadcastReceiver() {
@Inject
lateinit var accountManager: AccountManager
override fun onReceive(context: Context, intent: Intent) {
AndroidInjection.inject(this, context)
val accountId = intent.getLongExtra(NotificationHelper.ACCOUNT_ID, -1)
val account = accountManager.getAccountById(accountId)
if (account != null) {
account.activeNotifications = "[]"
accountManager.saveAccount(account)
}
}
}