Clean up

DiscordChatExporter.Core/Discord/DiscordClient.cs

@@ -189,17 +189,17 @@ public class DiscordClient
 
             var response = await GetJsonResponseAsync(url, cancellationToken);
 
-            var isEmpty = true;
+            var count = 0;
             foreach (var guildJson in response.EnumerateArray())
             {
                 var guild = Guild.Parse(guildJson);
                 yield return guild;
 
                 currentAfter = guild.Id;
-                isEmpty = false;
+                count++;
             }
 
-            if (isEmpty)
+            if (count <= 0)
                 yield break;
         }
     }
@@ -491,38 +491,36 @@ public class DiscordClient
         Emoji emoji,
         [EnumeratorCancellation] CancellationToken cancellationToken = default)
     {
-
-        var reactionName = Uri.EscapeDataString(
-            emoji.Id is not null
-                // Custom emoji
-                ? emoji.Name + ':' + emoji.Id
-                // Standard emoji
-                : emoji.Name
-        );
+        var reactionName = emoji.Id is not null
+            // Custom emoji
+            ? emoji.Name + ':' + emoji.Id
+            // Standard emoji
+            : emoji.Name;
 
         var currentAfter = Snowflake.Zero;
-
         while (true)
         {
             var url = new UrlBuilder()
-                .SetPath($"channels/{channelId}/messages/{messageId}/reactions/{reactionName}")
+                .SetPath($"channels/{channelId}/messages/{messageId}/reactions/{Uri.EscapeDataString(reactionName)}")
                 .SetQueryParameter("limit", "100")
                 .SetQueryParameter("after", currentAfter.ToString())
                 .Build();
 
             var response = await GetJsonResponseAsync(url, cancellationToken);
 
-            var users = response.EnumerateArray().Select(User.Parse).ToArray();
-            if (!users.Any())
-                yield break;
-            foreach (var user in users)
+            var count = 0;
+            foreach (var userJson in response.EnumerateArray())
             {
+                var user = User.Parse(userJson);
                 yield return user;
+
                 currentAfter = user.Id;
+                count++;
             }
+
             // Each batch can contain up to 100 users.
             // If we got fewer, then it's definitely the last batch.
-            if (users.Length < 100)
+            if (count < 100)
                 yield break;
         }
     }

DiscordChatExporter.Core/Exporting/JsonMessageWriter.cs

@@ -361,16 +361,16 @@ internal class JsonMessageWriter : MessageWriter
             _writer.WriteNumber("count", reaction.Count);
 
             _writer.WriteStartArray("users");
-            var users = await Context.Discord.GetMessageReactionsAsync(Context.Request.Channel.Id, message.Id, reaction.Emoji, cancellationToken);
-            foreach (var user in users) {
-
-                // write limited user information without color and roles,
-                // because if we would write the full user information,
-                // we would have to fetch the guild member information for each user
-                // which would be a lot of requests
-
-                 _writer.WriteStartObject();
+            await foreach (var user in Context.Discord.GetMessageReactionsAsync(
+                               Context.Request.Channel.Id,
+                               message.Id,
+                               reaction.Emoji,
+                               cancellationToken))
+            {
+                _writer.WriteStartObject();
 
+                // Write limited user information without color and roles,
+                // so we can avoid fetching guild member information for each user.
                 _writer.WriteString("id", user.Id.ToString());
                 _writer.WriteString("name", user.Name);
                 _writer.WriteString("discriminator", user.DiscriminatorFormatted);
@@ -386,7 +386,6 @@ internal class JsonMessageWriter : MessageWriter
                 );
 
                 _writer.WriteEndObject();
-                await _writer.FlushAsync(cancellationToken);
             }
 
             _writer.WriteEndArray();

DiscordChatExporter.Core/Utils/Extensions/BinaryExtensions.cs

@@ -1,4 +1,5 @@
-using System.Text;
+using System.Globalization;
+using System.Text;
 
 namespace DiscordChatExporter.Core.Utils.Extensions;
 
@@ -11,7 +12,7 @@ public static class BinaryExtensions
         foreach (var b in data)
         {
             buffer.Append(
-                b.ToString(isUpperCase ? "X2" : "x2")
+                b.ToString(isUpperCase ? "X2" : "x2", CultureInfo.InvariantCulture)
             );
         }