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fix: use WebMessageReceived instead of ExecuteScriptAsync return value for async script results

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This commit is contained in:
SuperDooper
2026-05-08 16:11:53 +02:00
parent a74d0cece5
commit 03676a980f
1 changed files with 37 additions and 11 deletions
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windows/LoginWindow.xaml.cs
+37 -11
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@@ -47,7 +47,6 @@ public partial class LoginWindow : Window
: "Complete sign-in, then click Done.";
});
// Auto-close once we land on any claude.ai page that isn't the login flow
if (!uri.Contains("/login") && !uri.Contains("/signin") && signedIn)
await SaveAndClose(cookies);
};
@@ -67,9 +66,19 @@ public partial class LoginWindow : Window
UsageViewModel.SaveCookies(cookies);
// Fetch bootstrap + usage from within WebView2 (already authenticated, no header issues)
try
{
// Use WebMessageReceived so the async script can post back without relying
// on Promise-awaiting support in the WebView2 runtime version.
var tcs = new TaskCompletionSource<string?>(TaskCreationOptions.RunContinuationsAsynchronously);
EventHandler<CoreWebView2WebMessageReceivedEventArgs>? msgHandler = null;
msgHandler = (_, args) =>
{
Browser.CoreWebView2.WebMessageReceived -= msgHandler;
tcs.TrySetResult(args.WebMessageAsString);
};
Browser.CoreWebView2.WebMessageReceived += msgHandler;
const string script = @"(async()=>{try{
const h={headers:{accept:'application/json'}};
const b=await(await fetch('/api/bootstrap',h)).json();
@@ -84,16 +93,22 @@ public partial class LoginWindow : Window
if(Array.isArray(ol)&&ol.length>0){id=ol[0]?.uuid||null;orgSrc='orgs-list';}}catch(e2){}
}
if(!id){
try{const pu=await(await fetch('/api/usage',h)).json();
if(pu&&!pu.error)return{email:e,orgId:null,usage:pu,debug:'no-org|bkeys:'+bkeys+'|akeys:'+akeys};}catch(e3){}
return{email:e,orgId:null,usage:null,debug:'no-org|bkeys:'+bkeys+'|akeys:'+akeys};
let pu=null;
try{pu=await(await fetch('/api/usage',h)).json();}catch(e3){}
window.chrome.webview.postMessage(JSON.stringify({email:e,orgId:null,usage:(pu&&!pu.error?pu:null),debug:'no-org|bkeys:'+bkeys+'|akeys:'+akeys}));
return;
}
const u=await(await fetch('/api/organizations/'+id+'/usage',h)).json();
return{email:e,orgId:id,usage:u,debug:'orgSrc:'+orgSrc+'|bkeys:'+bkeys+'|akeys:'+akeys};
}catch(ex){return{error:String(ex)};}})()";
window.chrome.webview.postMessage(JSON.stringify({email:e,orgId:id,usage:u,debug:'orgSrc:'+orgSrc+'|bkeys:'+bkeys+'|akeys:'+akeys}));
}catch(ex){window.chrome.webview.postMessage(JSON.stringify({error:String(ex)}));}})()";
var json = await Browser.CoreWebView2.ExecuteScriptAsync(script);
if (json != "null" && !string.IsNullOrEmpty(json))
await Browser.CoreWebView2.ExecuteScriptAsync(script);
// Wait up to 15 s for the script to post its message
var completed = await Task.WhenAny(tcs.Task, Task.Delay(15000));
var json = completed == tcs.Task ? tcs.Task.Result : null;
if (!string.IsNullOrEmpty(json))
{
using var doc = JsonDocument.Parse(json);
var root = doc.RootElement;
@@ -110,12 +125,23 @@ public partial class LoginWindow : Window
if (root.TryGetProperty("debug", out var dbg) && dbg.ValueKind == JsonValueKind.String)
AppSettings.Default.DebugInfo = dbg.GetString() ?? "";
else if (root.TryGetProperty("error", out var err))
AppSettings.Default.DebugInfo = "error:" + err.GetRawText();
AppSettings.Default.DebugInfo = "JS error: " + err.GetRawText();
else
AppSettings.Default.DebugInfo = "timeout or empty message";
AppSettings.Default.Save();
}
else
{
AppSettings.Default.DebugInfo = json == null ? "script timeout (15s)" : "empty message";
AppSettings.Default.Save();
}
}
catch (Exception ex)
{
AppSettings.Default.DebugInfo = "exception: " + ex.Message;
AppSettings.Default.Save();
}
catch { }
await Dispatcher.InvokeAsync(() => DialogResult = true);
}