feat: clickable URLs in chat log

Adds a parsing step when constructing `Message` objects that scans the
message content for anything that looks URL-like, and inserts new
`TextChunk`s into the message content with a URIPayload set.

Hovering over a URL shows an on-hover effect. Clicking a URL opens it in
the default browser. Right clicking shows the hostname, with an option
to open and an option to copy the URL to the clipboard.

ChatTwo/Util/ChunkUtil.cs

@@ -1,6 +1,7 @@
 using ChatTwo.Code;
 using Dalamud.Game.Text.SeStringHandling;
 using Dalamud.Game.Text.SeStringHandling.Payloads;
+using System.Text;
 
 namespace ChatTwo.Util;
 
@@ -100,6 +101,10 @@ internal static class ChunkUtil {
                         var reader = new BinaryReader(new MemoryStream(rawPayload.Data[4..]));
                         var id = GetInteger(reader);
                         link = new AchievementPayload(id);
+                    } else if (rawPayload.Data.Length > 5 && rawPayload.Data[1] == 0x27 && rawPayload.Data[3] == 0x07) {
+                        // uri payload
+                        var uri = new Uri(Encoding.UTF8.GetString(rawPayload.Data[4..]));
+                        link = new URIPayload(uri);
                     } else if (Equals(rawPayload, RawPayload.LinkTerminator)) {
                         link = null;
                     }

ChatTwo/Util/ImGuiUtil.cs

@@ -197,16 +197,16 @@ internal static class ImGuiUtil {
         }
     }
 
-    internal static void WarningText(string text) {
+    internal static void WarningText(string text, bool wrap = true) {
         var style = StyleModel.GetConfiguredStyle() ?? StyleModel.GetFromCurrent();
         var dalamudOrange = style.BuiltInColors?.DalamudOrange;
         if (dalamudOrange != null) {
             ImGui.PushStyleColor(ImGuiCol.Text, dalamudOrange.Value);
         }
 
-        ImGui.PushTextWrapPos();
+        if (wrap) ImGui.PushTextWrapPos();
         ImGui.TextUnformatted(text);
-        ImGui.PopTextWrapPos();
+        if (wrap) ImGui.PopTextWrapPos();
 
         if (dalamudOrange != null) {
             ImGui.PopStyleColor();

ChatTwo/Util/Payloads.cs

@@ -37,3 +37,51 @@ internal class AchievementPayload : Payload {
         throw new NotImplementedException();
     }
 }
+
+
+internal class URIPayload(Uri uri) : Payload
+{
+    public override PayloadType Type => (PayloadType) 0x52;
+
+    public Uri Uri { get; init; } = uri;
+
+    private static readonly string[] ExpectedSchemes = ["http", "https"];
+    private static readonly string DefaultScheme = "https";
+
+    /// <summary>
+    /// Create a URIPayload from a raw URI string. If the URI does not have a
+    /// scheme, it will default to https://.
+    /// </summary>
+    /// <exception cref="UriFormatException">
+    /// If the URI is invalid, or if the scheme is not supported.
+    /// </exception>
+    public static URIPayload ResolveURI(string rawURI)
+    {
+        ArgumentNullException.ThrowIfNull(rawURI);
+
+        // Check for expected scheme ://, if not add https://
+        foreach (var scheme in ExpectedSchemes)
+        {
+            if (rawURI.StartsWith($"{scheme}://"))
+            {
+                return new URIPayload(new Uri(rawURI));
+            }
+        }
+        if (rawURI.Contains("://"))
+        {
+            throw new UriFormatException($"Unsupported scheme in URL: {rawURI}");
+        }
+
+        return new URIPayload(new Uri($"{DefaultScheme}://{rawURI}"));
+    }
+
+    protected override void DecodeImpl(BinaryReader reader, long endOfStream)
+    {
+        throw new NotImplementedException();
+    }
+
+    protected override byte[] EncodeImpl()
+    {
+        throw new NotImplementedException();
+    }
+}