Create new service side `AppVersionInfoCache`

1 files changed, 44 insertions, 0 deletions

diff --git a/android/src/main/kotlin/net/mullvad/mullvadvpn/service/endpoint/AppVersionInfoCache.kt b/android/src/main/kotlin/net/mullvad/mullvadvpn/service/endpoint/AppVersionInfoCache.kt
new file mode 100644
index 0000000000..1c7e6c0341
--- /dev/null
+++ b/android/src/main/kotlin/net/mullvad/mullvadvpn/service/endpoint/AppVersionInfoCache.kt
@@ -0,0 +1,44 @@
+package net.mullvad.mullvadvpn.service.endpoint
+
+import kotlin.properties.Delegates.observable
+import net.mullvad.mullvadvpn.ipc.Event
+import net.mullvad.mullvadvpn.model.AppVersionInfo
+
+class AppVersionInfoCache(endpoint: ServiceEndpoint) {
+    private val daemon = endpoint.intermittentDaemon
+
+    var appVersionInfo by observable<AppVersionInfo?>(null) { _, _, info ->
+        endpoint.sendEvent(Event.AppVersionInfo(info))
+    }
+        private set
+
+    var currentVersion by observable<String?>(null) { _, _, version ->
+        endpoint.sendEvent(Event.CurrentVersion(version))
+    }
+        private set
+
+    init {
+        daemon.registerListener(this) { newDaemon ->
+            if (currentVersion == null && newDaemon != null) {
+                currentVersion = newDaemon.getCurrentVersion()
+            }
+
+            newDaemon?.onAppVersionInfoChange = { newAppVersionInfo ->
+                synchronized(this@AppVersionInfoCache) {
+                    appVersionInfo = newAppVersionInfo
+                }
+            }
+
+            // Load initial version info
+            synchronized(this@AppVersionInfoCache) {
+                if (appVersionInfo == null && newDaemon != null) {
+                    appVersionInfo = newDaemon.getVersionInfo()
+                }
+            }
+        }
+    }
+
+    fun onDestroy() {
+        daemon.unregisterListener(this)
+    }
+}