Show server name in "Unable to connect to Home Assistant" dialog (#3995)

- Shows the server name instead of a generic "Home Assistant" to prevent confusion when the app cannot connect in the WebViewActivity, when using multiserver.

app/src/main/java/io/homeassistant/companion/android/webview/WebViewActivity.kt

@@ -1215,8 +1215,14 @@ class WebViewActivity : BaseActivity(), io.homeassistant.companion.android.webvi
         }
         isShowingError = true
 
+        val serverName = if (serverManager.defaultServers.size > 1) presenter.getActiveServerName() else null
         val alert = AlertDialog.Builder(this)
-            .setTitle(commonR.string.error_connection_failed)
+            .setTitle(
+                getString(
+                    commonR.string.error_connection_failed_to,
+                    serverName ?: getString(commonR.string.app_name)
+                )
+            )
             .setOnDismissListener {
                 isShowingError = false
                 alertDialog = null

app/src/main/java/io/homeassistant/companion/android/webview/WebViewPresenter.kt

@@ -11,6 +11,7 @@ interface WebViewPresenter {
     fun onViewReady(path: String?)
 
     fun getActiveServer(): Int
+    fun getActiveServerName(): String?
     fun updateActiveServer()
     fun setActiveServer(id: Int)
     fun switchActiveServer(id: Int)

app/src/main/java/io/homeassistant/companion/android/webview/WebViewPresenterImpl.kt

@@ -117,6 +117,13 @@ class WebViewPresenterImpl @Inject constructor(
 
     override fun getActiveServer(): Int = serverId
 
+    override fun getActiveServerName(): String? =
+        if (serverManager.isRegistered()) {
+            serverManager.getServer(serverId)?.friendlyName
+        } else {
+            null
+        }
+
     override fun updateActiveServer() {
         if (serverManager.isRegistered()) {
             serverManager.getServer()?.let {

common/src/main/res/values/strings.xml

@@ -244,6 +244,7 @@
     <string name="entity_widget_desc">View any entity\'s current state and toggle it</string>
     <string name="error_auth_revoked">It appears that your authorization was revoked, please reconnect to Home Assistant.</string>
     <string name="error_connection_failed">Unable to connect to Home Assistant.</string>
+    <string name="error_connection_failed_to">Unable to connect to %1$s</string>
     <string name="error_loading_entities">Error loading entities</string>
     <string name="error_onboarding_connection_failed">Unable to connect to Home Assistant.</string>
     <string name="error_ssl">Unable to communicate with Home Assistant because of a SSL error.  Please ensure your certificate is valid.</string>