feat: Update call started timeline item + declined support

libraries/eventformatter/impl/src/main/kotlin/io/element/android/libraries/eventformatter/impl/DefaultRoomLatestEventFormatter.kt

@@ -55,6 +55,7 @@ class DefaultRoomLatestEventFormatter(
     private val profileChangeContentFormatter: ProfileChangeContentFormatter,
     private val stateContentFormatter: StateContentFormatter,
     private val permalinkParser: PermalinkParser,
+    private val rtcNotificationContentFormatter: RtcNotificationContentFormatter,
 ) : RoomLatestEventFormatter {
     override fun format(
         latestEvent: LatestEventValue.Local,
@@ -121,7 +122,7 @@ class DefaultRoomLatestEventFormatter(
                 message.prefixIfNeeded(senderDisambiguatedDisplayName, isDmRoom, isOutgoing)
             }
             is LegacyCallInviteContent -> sp.getString(CommonStrings.common_unsupported_call)
-            is CallNotifyContent -> sp.getString(CommonStrings.common_call_started)
+            is CallNotifyContent -> rtcNotificationContentFormatter.format(content, isDmRoom)
         }?.take(DEFAULT_SAFE_LENGTH)
     }
 

libraries/eventformatter/impl/src/main/kotlin/io/element/android/libraries/eventformatter/impl/RtcNotificationContentFormatter.kt

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2026 Element Creations Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+package io.element.android.libraries.eventformatter.impl
+
+import dev.zacsweers.metro.Inject
+import io.element.android.libraries.matrix.api.MatrixClient
+import io.element.android.libraries.matrix.api.timeline.item.event.CallNotifyContent
+import io.element.android.libraries.ui.strings.CommonStrings
+import io.element.android.services.toolbox.api.strings.StringProvider
+
+@Inject
+class RtcNotificationContentFormatter(
+    private val matrixClient: MatrixClient,
+    private val sp: StringProvider,
+) {
+    fun format(
+        content: CallNotifyContent,
+        isDm: Boolean,
+    ): CharSequence {
+        return if (isDm) {
+            val isDeclined = content.declinedBy.isNotEmpty()
+            val isDeclinedByMe = content.declinedBy.any { matrixClient.isMe(it) }
+            if (isDeclinedByMe) {
+                sp.getString(CommonStrings.common_call_you_declined)
+            } else if (isDeclined) {
+                sp.getString(CommonStrings.common_call_declined)
+            } else {
+                sp.getString(CommonStrings.common_call_started)
+            }
+        } else {
+            sp.getString(CommonStrings.common_call_started)
+        }
+    }
+}