94ff181035
- Replace string.Empty stub with full BuildCsv implementation - UTF-8 BOM header row: Library,Site,Files,Total Size (MB),Version Size (MB),Last Modified - RFC 4180 CSV quoting via Csv() helper - FormatMb() converts bytes to MB with 2 decimal places - Add explicit System.IO using (required in WPF project)
57 lines
2.0 KiB
C#
57 lines
2.0 KiB
C#
using SharepointToolbox.Core.Models;
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using System.IO;
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using System.Text;
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namespace SharepointToolbox.Services.Export;
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/// <summary>
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/// Exports a flat list of StorageNode objects to a UTF-8 BOM CSV.
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/// Compatible with Microsoft Excel (BOM signals UTF-8 encoding).
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/// </summary>
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public class StorageCsvExportService
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{
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public string BuildCsv(IReadOnlyList<StorageNode> nodes)
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{
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var sb = new StringBuilder();
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// Header
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sb.AppendLine("Library,Site,Files,Total Size (MB),Version Size (MB),Last Modified");
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foreach (var node in nodes)
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{
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sb.AppendLine(string.Join(",",
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Csv(node.Name),
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Csv(node.SiteTitle),
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node.TotalFileCount.ToString(),
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FormatMb(node.TotalSizeBytes),
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FormatMb(node.VersionSizeBytes),
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node.LastModified.HasValue
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? Csv(node.LastModified.Value.ToString("yyyy-MM-dd"))
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: string.Empty));
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}
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return sb.ToString();
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}
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public async Task WriteAsync(IReadOnlyList<StorageNode> nodes, string filePath, CancellationToken ct)
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{
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var csv = BuildCsv(nodes);
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// UTF-8 with BOM for Excel compatibility
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await File.WriteAllTextAsync(filePath, csv, new UTF8Encoding(encoderShouldEmitUTF8Identifier: true), ct);
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}
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// ── Helpers ───────────────────────────────────────────────────────────────
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private static string FormatMb(long bytes)
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=> (bytes / (1024.0 * 1024.0)).ToString("F2");
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/// <summary>RFC 4180 CSV field quoting.</summary>
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private static string Csv(string value)
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{
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if (string.IsNullOrEmpty(value)) return string.Empty;
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if (value.Contains(',') || value.Contains('"') || value.Contains('\n'))
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return $"\"{value.Replace("\"", "\"\"")}\"";
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return value;
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}
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}
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