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Refactor error handling in DocumentService and consumers

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Refactored `DocumentService.GetDocumentAsync` to throw
`HttpRequestException` on failure instead of returning a tuple.
Updated all consumers to handle exceptions, improving error
handling consistency across the application.

Enhanced error messages for better user feedback and added
logging for improved traceability. Updated `EnvelopeReceiverPage`,
`EnvelopeReceiverPage_DxReportViewer`, and `ReportViewer` to
use the new exception-based API and handle errors gracefully.

This change simplifies the API, improves maintainability, and
makes the application more robust and user-friendly.
This commit is contained in:
tekh
2026-06-11 13:33:15 +02:00
parent ecb7f45f14
commit cf16312394
4 changed files with 35 additions and 14 deletions
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8
EnvelopeGenerator.ReceiverUI/Pages/EnvelopeReceiverPage.razor
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@@ -563,13 +563,13 @@ const int MaxThumbnailWidth = 400;
}
try {
var (pdfBytes, statusCode) = await DocumentService.GetDocumentAsync(EnvelopeKey);
var pdfBytes = await DocumentService.GetDocumentAsync(EnvelopeKey);
if (pdfBytes is { Length: > 0 }) {
var base64 = Convert.ToBase64String(pdfBytes);
_pdfDataUrl = $"data:application/pdf;base64,{base64}";
} else {
_errorMessage = $"Dokument konnte nicht geladen werden. HTTP Status: {statusCode}";
_errorMessage = "Dokument konnte nicht geladen werden: Keine Daten empfangen.";
}
var signatures = await SignatureService.GetAsync(EnvelopeKey);
@@ -608,8 +608,12 @@ const int MaxThumbnailWidth = 400;
_popupValidationMessage = null;
}
} catch (HttpRequestException ex) {
_errorMessage = $"Dokument konnte nicht geladen werden: {ex.Message}";
logger.LogError(ex, "Failed to load document for envelope {EnvelopeKey}", EnvelopeKey);
} catch (Exception ex) {
_errorMessage = $"Fehler: {ex.Message}";
logger.LogError(ex, "Unexpected error during initialization for envelope {EnvelopeKey}", EnvelopeKey);
}
_isLoading = false;