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https://github.com/rmcrackan/Libation.git
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76 lines
2.5 KiB
C#
76 lines
2.5 KiB
C#
using System;
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using System.Runtime.InteropServices;
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namespace LibationUiBase;
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/// <summary>
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/// User-facing copy and exception matching when embedded sign-in browser fails (often mistaken for a "library scan" bug).
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/// Shared by WinForms and Avalonia; stack markers include WebView2 and Avalonia's NativeWebDialog.
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/// </summary>
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public static class WebView2LoginErrorMessage
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{
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public const string Caption = "Sign-in browser could not start";
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public static string ExplainerBody =>
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"Libation could not start the in-app sign-in browser. On Windows this uses Microsoft WebView2. "
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+ "This is a local sign-in or system setup issue — not a failure of the library scan itself.\r\n\r\n"
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+ "Things to try:\r\n"
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+ "• On Windows: install or repair the Microsoft Edge WebView2 Runtime from https://developer.microsoft.com/microsoft-edge/webview2/\r\n"
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+ "• In Libation Settings, try turning off the option to use the embedded browser and use external browser sign-in instead.\r\n"
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+ "• Check that security software is not blocking Libation or the embedded browser.\r\n"
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+ "• Ensure your account can write to local app data folders (permissions).\r\n"
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+ "• If you run as Administrator, try running Libation as a normal user (or the reverse).\r\n\r\n"
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+ "After sign-in works, use Import again to scan your library.";
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public static bool IsWebView2SignInInfrastructureFailure(Exception ex)
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{
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for (var e = ex; e is not null; e = e.InnerException)
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{
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if (!StackMentionsEmbeddedSignInBrowser(e))
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continue;
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if (e is UnauthorizedAccessException)
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return true;
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if (e is COMException com
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&& (com.HResult == unchecked((int)0x8000FFFF) || com.HResult == unchecked((int)0x80070005)))
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return true;
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}
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return false;
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}
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public static bool TryFindInTree(Exception ex, out Exception? match)
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{
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Exception? found = null;
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walk(ex);
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match = found;
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return found is not null;
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void walk(Exception? e)
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{
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if (e is null || found is not null)
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return;
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if (IsWebView2SignInInfrastructureFailure(e))
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found = e;
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if (found is not null)
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return;
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if (e is AggregateException agg)
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{
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foreach (var inner in agg.InnerExceptions)
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walk(inner);
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}
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walk(e.InnerException);
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}
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}
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private static bool StackMentionsEmbeddedSignInBrowser(Exception e)
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{
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var stack = e.StackTrace;
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return stack is not null
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&& (stack.Contains("WebView2", StringComparison.Ordinal)
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|| stack.Contains("CoreWebView2", StringComparison.Ordinal)
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|| stack.Contains("NativeWebDialog", StringComparison.Ordinal));
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}
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}
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