consolidate common process into resolveAndSetEndpoint

mobile/lib/modules/backup/background_service/background.service.dart

@@ -357,7 +357,6 @@ class BackgroundService {
       Hive.openBox<HiveBackupAlbums>(hiveBackupInfoBox),
     ]);
     ApiService apiService = ApiService();
-    apiService.setEndpoint(Hive.box(userInfoBox).get(serverEndpointKey));
     apiService.setAccessToken(Hive.box(userInfoBox).get(accessTokenKey));
     BackupService backupService = BackupService(apiService);
     AppSettingsService settingsService = AppSettingsService();

mobile/lib/modules/login/providers/authentication.provider.dart

@@ -59,10 +59,8 @@ class AuthenticationNotifier extends StateNotifier<AuthenticationState> {
   ) async {
     try {
       // Resolve API server endpoint from user provided serverUrl
-      final serverEndpoint = await _apiService.resolveEndpoint(serverUrl);
-      _apiService.setEndpoint(serverEndpoint);
+      await _apiService.resolveAndSetEndpoint(serverUrl);
       await _apiService.serverInfoApi.pingServer();
-      Hive.box(userInfoBox).put(serverEndpointKey, serverEndpoint);
     } catch (e) {
       debugPrint('Invalid Server Endpoint Url $e');
       return false;

mobile/lib/modules/login/services/oauth.service.dart

@@ -14,8 +14,7 @@ class OAuthService {
     String serverUrl,
   ) async {
     // Resolve API server endpoint from user provided serverUrl
-    final serverEndpoint = await _apiService.resolveEndpoint(serverUrl);
-    _apiService.setEndpoint(serverEndpoint);
+    await _apiService.resolveAndSetEndpoint(serverUrl);
 
     return await _apiService.oAuthApi.generateConfig(
       OAuthConfigDto(redirectUri: '$callbackUrlScheme:/'),

mobile/lib/modules/login/ui/login_form.dart

@@ -42,9 +42,7 @@ class LoginForm extends HookConsumerWidget {
           if (serverUrl.isNotEmpty) {
             isLoading.value = true;
             final serverEndpoint =
-                await apiService.resolveEndpoint(serverUrl.toString());
-            apiService.setEndpoint(serverEndpoint);
-            Hive.box(userInfoBox).put(serverEndpointKey, serverEndpoint);
+                await apiService.resolveAndSetEndpoint(serverUrl.toString());
 
             var loginConfig = await apiService.oAuthApi.generateConfig(
               OAuthConfigDto(redirectUri: serverEndpoint),
@@ -218,11 +216,11 @@ class ServerEndpointInput extends StatelessWidget {
   String? _validateInput(String? url) {
     if (url == null || url.isEmpty) return null;
 
-    final validate = Uri.tryParse(sanitizeUrl(url));
-    if (validate == null ||
-        !validate.isAbsolute ||
-        !validate.scheme.startsWith("http") ||
-        validate.host.isEmpty) {
+    final parsedUrl = Uri.tryParse(sanitizeUrl(url));
+    if (parsedUrl == null ||
+        !parsedUrl.isAbsolute ||
+        !parsedUrl.scheme.startsWith("http") ||
+        parsedUrl.host.isEmpty) {
       return 'login_form_err_invalid_url'.tr();
     }
     return null;

mobile/lib/shared/services/api.service.dart

@@ -1,6 +1,8 @@
 import 'dart:convert';
 
 import 'package:flutter/material.dart';
+import 'package:hive/hive.dart';
+import 'package:immich_mobile/constants/hive_box.dart';
 import 'package:immich_mobile/utils/url_helper.dart';
 import 'package:openapi/api.dart';
 import 'package:http/http.dart';
@@ -16,6 +18,17 @@ class ApiService {
   late ServerInfoApi serverInfoApi;
   late DeviceInfoApi deviceInfoApi;
 
+  ApiService() {
+    if (Hive.isBoxOpen(userInfoBox)) {
+      final endpoint = Hive.box(userInfoBox).get(serverEndpointKey) as String;
+      if (endpoint.isNotEmpty) {
+        setEndpoint(endpoint);
+      }
+    } else {
+      debugPrint("Cannot init ApiServer endpoint, userInfoBox not open yet.");
+    }
+  }
+
   setEndpoint(String endpoint) {
     _apiClient = ApiClient(basePath: endpoint);
     userApi = UserApi(_apiClient);
@@ -27,6 +40,15 @@ class ApiService {
     deviceInfoApi = DeviceInfoApi(_apiClient);
   }
 
+  Future<String> resolveAndSetEndpoint(String serverUrl) async {
+    final endpoint = await _resolveEndpoint(serverUrl);
+    setEndpoint(endpoint);
+
+    // Save in hivebox for next startup
+    Hive.box(userInfoBox).put(serverEndpointKey, endpoint);
+    return endpoint;
+  }
+
   /// Takes a server URL and attempts to resolve the API endpoint.
   ///
   /// Input: [schema://]host[:port][/path]
@@ -34,18 +56,18 @@ class ApiService {
   ///  host   - required
   ///  port   - optional (default: based on schema)
   ///  path   - optional
-  Future<String> resolveEndpoint(String serverUrl) async {
+  Future<String> _resolveEndpoint(String serverUrl) async {
     final url = sanitizeUrl(serverUrl);
 
     // Check for /.well-known/immich
-    final wellKnownEndpoint = await getWellKnownEndpoint(url);
+    final wellKnownEndpoint = await _getWellKnownEndpoint(url);
     if (wellKnownEndpoint.isNotEmpty) return wellKnownEndpoint;
 
     // Otherwise, assume the URL provided is the api endpoint
     return url;
   }
 
-  Future<String> getWellKnownEndpoint(String baseUrl) async {
+  Future<String> _getWellKnownEndpoint(String baseUrl) async {
     final Client client = Client();
 
     try {

mobile/lib/shared/views/splash_screen.dart

@@ -23,10 +23,7 @@ class SplashScreenPage extends HookConsumerWidget {
       try {
         if (loginInfo != null) {
           // Resolve API server endpoint from user provided serverUrl
-          final serverEndpoint =
-              await apiService.resolveEndpoint(loginInfo.serverUrl);
-          apiService.setEndpoint(serverEndpoint);
-          Hive.box(userInfoBox).put(serverEndpointKey, serverEndpoint);
+          await apiService.resolveAndSetEndpoint(loginInfo.serverUrl);
 
           var isSuccess = await ref
               .read(authenticationProvider.notifier)