86 lines
3.2 KiB
C#
86 lines
3.2 KiB
C#
 
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using RemSound.Core;
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namespace RemSound.App;
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/// <summary>
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/// Housekeeping for the <c>logs\</c> folder, driven by the Logging-tab preferences: report the
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/// folder's total size (for the startup over-size warning), prune log files older than N days, and
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/// delete every log on demand. All operations are best-effort — a locked or vanished file is
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/// skipped, never thrown, because log housekeeping must never stop the app from running.
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/// </summary>
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internal static class LogMaintenance
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{
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/// <summary>Total size in bytes of every <c>*.log</c> file in the logs folder. 0 if the folder
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/// doesn't exist yet or can't be read.</summary>
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public static long LogsFolderSizeBytes()
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{
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try
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{
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var dir = AppConfig.LogsDirectory;
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if (!Directory.Exists(dir)) return 0;
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long total = 0;
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foreach (var file in Directory.EnumerateFiles(dir, "*.log"))
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{
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try { total += new FileInfo(file).Length; } catch { /* vanished mid-scan — skip */ }
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}
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return total;
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}
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catch { return 0; }
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}
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/// <summary>Delete <c>*.log</c> files last written more than <paramref name="days"/> days ago.
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/// The currently-open log (<paramref name="activeLogPath"/>) is always spared even if the clock
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/// makes it look old. Returns how many files were deleted.</summary>
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public static int PruneLogsOlderThan(int days, string? activeLogPath)
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{
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if (days < 1) return 0;
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var deleted = 0;
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try
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{
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var dir = AppConfig.LogsDirectory;
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if (!Directory.Exists(dir)) return 0;
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var cutoff = DateTime.Now.AddDays(-days);
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foreach (var file in Directory.EnumerateFiles(dir, "*.log"))
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{
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if (IsSamePath(file, activeLogPath)) continue;
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try
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{
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if (File.GetLastWriteTime(file) < cutoff)
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{
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File.Delete(file);
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deleted++;
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}
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}
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catch { /* locked / in use — leave it */ }
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}
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}
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catch { /* folder enumeration failed — give up quietly */ }
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return deleted;
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}
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/// <summary>Delete every <c>*.log</c> file except the one currently being written
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/// (<paramref name="activeLogPath"/>, which is held open and can't be removed anyway). Returns
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/// how many files were deleted.</summary>
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public static int DeleteAllLogs(string? activeLogPath)
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{
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var deleted = 0;
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try
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{
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var dir = AppConfig.LogsDirectory;
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if (!Directory.Exists(dir)) return 0;
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foreach (var file in Directory.EnumerateFiles(dir, "*.log"))
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{
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if (IsSamePath(file, activeLogPath)) continue;
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try { File.Delete(file); deleted++; }
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catch { /* locked / in use — leave it */ }
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}
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}
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catch { /* give up quietly */ }
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return deleted;
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}
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private static bool IsSamePath(string a, string? b) =>
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!string.IsNullOrEmpty(b)
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&& string.Equals(Path.GetFullPath(a), Path.GetFullPath(b), StringComparison.OrdinalIgnoreCase);
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}
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