Bugfixes

src/jvmMain/kotlin/de/kif/backend/util/PushService.kt

@@ -14,6 +14,8 @@ import io.ktor.routing.Route
 import io.ktor.routing.get
 import kotlinx.html.currentTimeMillis
 import kotlin.concurrent.thread
+import kotlin.math.abs
+import kotlin.math.max
 
 object PushService {
 
@@ -35,14 +37,20 @@ object PushService {
     }
 
     private fun getIndexOfTimestamp(timestamp: Long): Int {
-        val index = messages.binarySearch(Pair(timestamp, Message.empty), compareBy { it.first })
-        val i = if (index < 0) {
+        var index = messages.binarySearch(Pair(timestamp, Message.empty), compareBy { it.first })
+        index = if (index < 0) {
             -index - 1
         } else {
             index
         }
 
-        return if (i < 0) 0 else i
+        var element = messages.getOrNull(index - 1)
+        while (element != null && element.first >= timestamp) {
+            index--
+            element = messages.getOrNull(index - 1)
+        }
+
+        return max(0, index)
     }
 
     /**