WebApi + ClientApp, GraphQL, Reflection

2026-05-06 20:55:05 +02:00
parent 8f7c704a90
commit 4fb3de19f6
196 changed files with 10395 additions and 0 deletions
--- a/Events-WebApi/Events.FilesAPI/Features/RegistrationsExcel/EventRegistrationsExcelWriter.cs
+++ b/Events-WebApi/Events.FilesAPI/Features/RegistrationsExcel/EventRegistrationsExcelWriter.cs
@@ -0,0 +1,102 @@
+using LargeXlsx;
+using Microsoft.EntityFrameworkCore;
+
+namespace Events.FilesAPI.Features.RegistrationsExcel;
+
+internal static class EventRegistrationsExcelWriter
+{
+  public static async Task WriteAsync(
+    string path,
+    IQueryable<RowData> rows,
+    RowData firstRow,
+    CancellationToken cancellationToken)
+  {
+    await using var stream = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.None);
+    await using var writer = new XlsxWriter(stream);
+
+    string[] headers =
+    [
+      "Registration ID",
+      "Registration date",
+      "Person ID",
+      "Last name",
+      "First name",
+      "Last name transcription",
+      "First name transcription",
+      "Country",
+      "Sport"
+    ];
+
+    string[] firstRowValues = GetRowValues(firstRow);
+    var columns = headers
+      .Select((header, index) => XlsxColumn.Formatted(GetWidth(header, firstRowValues[index])))
+      .ToArray();
+
+    writer
+      .BeginWorksheet("Registrations", columns: columns)
+      .BeginRow();
+
+    foreach (string header in headers)
+    {
+      writer.Write(header);
+    }
+
+    await foreach (RowData row in rows.AsAsyncEnumerable().WithCancellation(cancellationToken))
+    {
+      writer
+        .BeginRow()
+        .Write(row.RegistrationId)
+        .Write(FormatRegisteredAt(row.RegisteredAt))
+        .Write(row.PersonId)
+        .Write(row.LastName)
+        .Write(row.FirstName)
+        .Write(row.LastNameTranscription)
+        .Write(row.FirstNameTranscription)
+        .Write(row.CountryName)
+        .Write(row.SportName);
+    }
+
+    await writer.CommitAsync();
+  }
+
+  private static string[] GetRowValues(RowData row)
+  {
+    return
+    [
+      row.RegistrationId.ToString(),
+      FormatRegisteredAt(row.RegisteredAt),
+      row.PersonId.ToString(),
+      row.LastName,
+      row.FirstName,
+      row.LastNameTranscription,
+      row.FirstNameTranscription,
+      row.CountryName,
+      row.SportName
+    ];
+  }
+
+  private static double GetWidth(string header, string sample)
+  {
+    int maxLength = Math.Max(header.Length, sample.Length);
+    double paddedWidth = Math.Ceiling(maxLength * 1.25d + 4d);
+    return Math.Clamp(paddedWidth, 10d, 60d);
+  }
+
+  private static string FormatRegisteredAt(DateTime? value)
+  {
+    return value.HasValue ? value.Value.ToString("yyyy-MM-dd HH:mm:ss") : string.Empty;
+  }
+
+  internal sealed class RowData
+  {
+    public int RegistrationId { get; init; }
+    public DateTime? RegisteredAt { get; init; }
+    public int PersonId { get; init; }
+    public string FirstName { get; init; } = string.Empty;
+    public string LastName { get; init; } = string.Empty;
+    public string FirstNameTranscription { get; init; } = string.Empty;
+    public string LastNameTranscription { get; init; } = string.Empty;
+    public string CountryName { get; init; } = string.Empty;
+    public string SportName { get; init; } = string.Empty;
+  }
+}