Refactor

DiscordChatExporter.Core/Discord/Dump/DataDump.cs

@@ -41,23 +41,19 @@ public partial class DataDump
         CancellationToken cancellationToken = default
     )
     {
-        using var archive = ZipFile.OpenRead(zipFilePath);
+        await using var archive = await ZipFile.OpenReadAsync(zipFilePath, cancellationToken);
 
-        // Try to find the index file with case-insensitive search
-        // Discord changed the structure from "messages/index.json" to "Messages/index.json"
+        // Use case-insensitive search to accommodate for different data dump versions
         // https://github.com/Tyrrrz/DiscordChatExporter/issues/1459
-        var entry = archive.Entries.FirstOrDefault(e =>
-            e.FullName.Equals("messages/index.json", StringComparison.OrdinalIgnoreCase)
-        );
-
-        if (entry is null)
-        {
-            throw new InvalidOperationException(
+        var entry =
+            archive.Entries.FirstOrDefault(e =>
+                e.FullName.Equals("messages/index.json", StringComparison.OrdinalIgnoreCase)
+            )
+            ?? throw new InvalidOperationException(
                 "Failed to locate the channel index inside the data package."
             );
-        }
 
-        await using var stream = entry.Open();
+        await using var stream = await entry.OpenAsync(cancellationToken);
         using var document = await JsonDocument.ParseAsync(stream, default, cancellationToken);
 
         return Parse(document.RootElement);