SS-78 / SES-199 Mechanism required to limit emoji reaction rate

This commit is contained in:
alansley 2024-08-14 16:02:16 +10:00
parent a8ee5c9f3b
commit edd154d8e1

View File

@ -1,7 +1,6 @@
package org.thoughtcrime.securesms.conversation.v2
import android.Manifest
import android.Manifest.permission.ACCESS_FINE_LOCATION
import android.animation.FloatEvaluator
import android.animation.ValueAnimator
import android.content.ClipData
@ -183,6 +182,7 @@ import org.thoughtcrime.securesms.util.push
import org.thoughtcrime.securesms.util.show
import org.thoughtcrime.securesms.util.toPx
import java.lang.ref.WeakReference
import java.util.LinkedList
import java.util.Locale
import java.util.concurrent.ExecutionException
import java.util.concurrent.atomic.AtomicBoolean
@ -194,7 +194,6 @@ import kotlin.math.min
import kotlin.math.roundToInt
import kotlin.math.sqrt
private const val TAG = "ConversationActivityV2"
// Some things that seemingly belong to the input bar (e.g. the voice message recording UI) are actually
@ -285,7 +284,12 @@ class ConversationActivityV2 : PassphraseRequiredActionBarActivity(), InputBarDe
var searchViewItem: MenuItem? = null
private val bufferedLastSeenChannel = Channel<Long>(capacity = 512, onBufferOverflow = BufferOverflow.DROP_OLDEST)
private var emojiPickerVisible = false
private val emojiRateLimiterQueue = LinkedList<String>()
private val emojiRateLimiterQueueSize = 4 // Maximum number of emoji reactions allowed per 20 seconds (as removal delay is 5 secs)
private val emojiRateLimiterRemovalDelayMS = 5000L // Remove an emoji from the queue after this many milliseconds
private val emojiRateLimitHandler = Handler(Looper.getMainLooper())
private val isScrolledToBottom: Boolean
get() = binding.conversationRecyclerView.isScrolledToBottom
@ -1343,7 +1347,29 @@ class ConversationActivityV2 : PassphraseRequiredActionBarActivity(), InputBarDe
}
}
// Method to add an emoji to a queue and remove it a short while later - this is used as a
// rate-limiting mechanism and is called from the `sendEmojiReaction` method, below.
private fun currentlyEmojiReactRateLimited(emoji: String): Boolean {
if (emojiRateLimiterQueue.size >= emojiRateLimiterQueueSize) {
return true
} else {
// Add the emoji to the queue, then a little while later remove it
emojiRateLimiterQueue.add(emoji)
emojiRateLimitHandler.postDelayed({
emojiRateLimiterQueue.remove(emoji)
}, emojiRateLimiterRemovalDelayMS)
return false
}
}
private fun sendEmojiReaction(emoji: String, originalMessage: MessageRecord) {
// Only allow the emoji reaction if we aren't currently rate limited
if (currentlyEmojiReactRateLimited(emoji)) {
Toast.makeText(this, getString(R.string.emojiReactsCoolDown), Toast.LENGTH_SHORT).show()
return
}
// Create the message
val recipient = viewModel.recipient ?: return Log.w(TAG, "Could not locate recipient when sending emoji reaction")
val reactionMessage = VisibleMessage()
@ -1389,6 +1415,8 @@ class ConversationActivityV2 : PassphraseRequiredActionBarActivity(), InputBarDe
}
}
// Method to remove a emoji reaction from a message.
// Note: We do not count emoji removal towards the emojiRateLimiterQueue.
private fun sendEmojiRemoval(emoji: String, originalMessage: MessageRecord) {
val recipient = viewModel.recipient ?: return
val message = VisibleMessage()