oidc buttons, depends on server options

Signed-off-by: fufesou <shuanglongchen@yeah.net>

flutter/lib/common/widgets/login.dart

@@ -4,6 +4,7 @@ import 'dart:convert';
 import 'package:flutter/material.dart';
 import 'package:flutter_hbb/common/hbbs/hbbs.dart';
 import 'package:flutter_hbb/models/platform_model.dart';
+import 'package:flutter_hbb/models/user_model.dart';
 import 'package:get/get.dart';
 import 'package:flutter_svg/flutter_svg.dart';
 import 'package:url_launcher/url_launcher.dart';
@@ -362,6 +363,8 @@ class LoginWidgetUserPass extends StatelessWidget {
   }
 }
 
+const kAuthReqTypeOidc = 'oidc/';
+
 /// common login dialog for desktop
 /// call this directly
 Future<bool?> loginDialog() async {
@@ -375,6 +378,8 @@ Future<bool?> loginDialog() async {
   var isInProgress = false;
   final RxString curOP = ''.obs;
 
+  final loginOptions = await UserModel.queryLoginOptions();
+
   final res = await gFFI.dialogManager.show<bool>((setState, close, context) {
     username.addListener(() {
       if (usernameMsg != null) {
@@ -446,6 +451,42 @@ Future<bool?> loginDialog() async {
       setState(() => isInProgress = false);
     }
 
+    final oidcOptions = loginOptions
+        .where((opt) => opt.startsWith(kAuthReqTypeOidc))
+        .map((opt) => opt.substring(kAuthReqTypeOidc.length))
+        .toList();
+
+    thirdAuthWidget() => Offstage(
+          offstage: oidcOptions.isEmpty,
+          child: Column(
+            children: [
+              const SizedBox(
+                height: 8.0,
+              ),
+              Center(
+                  child: Text(
+                translate('or'),
+                style: TextStyle(fontSize: 16),
+              )),
+              const SizedBox(
+                height: 8.0,
+              ),
+              LoginWidgetOP(
+                ops: [
+                  ConfigOP(op: 'GitHub', iconWidth: 20),
+                  ConfigOP(op: 'Google', iconWidth: 20),
+                  ConfigOP(op: 'Okta', iconWidth: 38),
+                ].where((op) => oidcOptions.contains(op.op.toLowerCase())).toList(),
+                curOP: curOP,
+                cbLogin: (String username) {
+                  gFFI.userModel.userName.value = username;
+                  close(true);
+                },
+              ),
+            ],
+          ),
+        );
+
     return CustomAlertDialog(
       title: Text(translate('Login')),
       contentBoxConstraints: BoxConstraints(minWidth: 400),
@@ -465,29 +506,7 @@ Future<bool?> loginDialog() async {
             onLogin: onLogin,
             userFocusNode: userFocusNode,
           ),
-          const SizedBox(
+          thirdAuthWidget(),
-            height: 8.0,
-          ),
-          Center(
-              child: Text(
-            translate('or'),
-            style: TextStyle(fontSize: 16),
-          )),
-          const SizedBox(
-            height: 8.0,
-          ),
-          LoginWidgetOP(
-            ops: [
-              ConfigOP(op: 'GitHub', iconWidth: 20),
-              ConfigOP(op: 'Google', iconWidth: 20),
-              ConfigOP(op: 'Okta', iconWidth: 38),
-            ],
-            curOP: curOP,
-            cbLogin: (String username) {
-              gFFI.userModel.userName.value = username;
-              close(true);
-            },
-          ),
         ],
       ),
       actions: [dialogButton('Close', onPressed: onDialogCancel)],

flutter/lib/models/user_model.dart

@@ -109,7 +109,7 @@ class UserModel {
     try {
       body = jsonDecode(resp.body);
     } catch (e) {
-      print("jsonDecode resp body failed: ${e.toString()}");
+      print("login: jsonDecode resp body failed: ${e.toString()}");
       rethrow;
     }
 
@@ -121,7 +121,7 @@ class UserModel {
     try {
       loginResponse = LoginResponse.fromJson(body);
     } catch (e) {
-      print("jsonDecode LoginResponse failed: ${e.toString()}");
+      print("login: jsonDecode LoginResponse failed: ${e.toString()}");
       rethrow;
     }
 
@@ -131,4 +131,15 @@ class UserModel {
 
     return loginResponse;
   }
+
+  static Future<List<dynamic>> queryLoginOptions() async {
+    final url = await bind.mainGetApiServer();
+    final resp = await http.get(Uri.parse('$url/api/login-options'));
+    try {
+      return jsonDecode(resp.body);
+    } catch (e) {
+      print("queryLoginOptions: jsonDecode resp body failed: ${e.toString()}");
+      return [];
+    }
+  }
 }