Fix issues with using webview to assist with cookie login on iOS platform

Author: jiangtian616

lib/src/pages/setting/account/login/login_page_logic.dart

@@ -330,13 +330,20 @@ class LoginPageLogic extends GetxController {
       return;
     }
 
-    String? username = await webview.evaluateJavaScript('''
+    String? rawUsername = await webview.evaluateJavaScript('''
     document.querySelector('.home > b > a')?.innerText ?? ""
     ''');
-    if (isEmptyOrNull(username) || username == 'null') {
+    if (isEmptyOrNull(rawUsername) || rawUsername == 'null') {
       return;
     }
 
+    String username;
+    try {
+      username = jsonDecode(rawUsername!);
+    } catch (e) {
+      username = rawUsername!;
+    }
+
     await ehRequest.storeEHCookies([
       Cookie('ipb_member_id', state.ipbMemberId!),
       Cookie('ipb_pass_hash', state.ipbPassHash!),
@@ -348,7 +355,7 @@ class LoginPageLogic extends GetxController {
       ehSetting.site.value = 'EX';
     }
     await userSetting.saveUserInfo(
-      userName: jsonDecode(username!),
+      userName: username,
       ipbMemberId: int.parse(state.ipbMemberId!),
       ipbPassHash: state.ipbPassHash!,
     );
@@ -385,20 +392,26 @@ class LoginPageLogic extends GetxController {
       return;
     }
 
-    String? username = await controller.runJavaScriptReturningResult('''
+    String? rawUsername = await controller.runJavaScriptReturningResult('''
     document.querySelector('.home > b > a')?.innerText ?? ""
     ''') as String?;
-    log.info(username ?? '');
-    if (isEmptyOrNull(username) || username == 'null') {
+    if (isEmptyOrNull(rawUsername) || rawUsername == 'null') {
       return;
     }
 
+    String username;
+    try {
+      username = jsonDecode(rawUsername!);
+    } catch (e) {
+      username = rawUsername!;
+    }
+
     await ehRequest.storeEHCookies(cookies);
     if (useExSite) {
       ehSetting.site.value = 'EX';
     }
     await userSetting.saveUserInfo(
-      userName: jsonDecode(username!),
+      userName: username,
       ipbMemberId: int.parse(state.ipbMemberId!),
       ipbPassHash: state.ipbPassHash!,
     );