diff --git a/LibMatrix/Helpers/MessageFormatter.cs b/LibMatrix/Helpers/MessageFormatter.cs
index 1b9b4f3..780ac0e 100644
--- a/LibMatrix/Helpers/MessageFormatter.cs
+++ b/LibMatrix/Helpers/MessageFormatter.cs
@@ -0,0 +1,70 @@
+using ArcaneLibs.Extensions;
+using LibMatrix.EventTypes.Spec;
+
+namespace LibMatrix.Helpers;
+
+public static class MessageFormatter {
+ public static RoomMessageEventContent FormatError(string error) =>
+ new(body: error, messageType: "m.text") {
+ FormattedBody = $"<font color=\"#EE4444\">{error}</font>",
+ Format = "org.matrix.custom.html"
+ };
+
+ public static RoomMessageEventContent FormatException(string error, Exception e) =>
+ new(body: $"{error}: {e.Message}", messageType: "m.text") {
+ FormattedBody = $"<font color=\"#EE4444\">{error}: <pre><code>{e.Message}</code></pre></font>",
+ Format = "org.matrix.custom.html"
+ };
+
+ public static RoomMessageEventContent FormatSuccess(string text) =>
+ new(body: text, messageType: "m.text") {
+ FormattedBody = $"<font color=\"#00FF00\">{text}</font>",
+ Format = "org.matrix.custom.html"
+ };
+
+ public static RoomMessageEventContent FormatSuccessJson(string text, object data) =>
+ new(body: text, messageType: "m.text") {
+ FormattedBody = $"<font color=\"#00FF00\">{text}: <pre><code>{data.ToJson(ignoreNull: true)}</code></pre></font>",
+ Format = "org.matrix.custom.html"
+ };
+
+ public static string HtmlFormatMention(string id, string? displayName = null) => $"<a href=\"https://matrix.to/#/{id}\">{displayName ?? id}</a>";
+
+ public static string HtmlFormatMessageLink(string roomId, string eventId, string[] servers, string? displayName = null) {
+ if (servers is not { Length: > 0 })
+ servers = roomId.Contains(':')
+ ? [roomId.Split(':', 2)[1]]
+ : throw new ArgumentException("Message links must contain a list of via's for v12+ rooms!", nameof(servers));
+ return $"<a href=\"https://matrix.to/#/{roomId}/{eventId}?via={string.Join("&via=", servers)}\">{displayName ?? eventId}</a>";
+ }
+
+#region Extension functions
+
+ public static RoomMessageEventContent ToMatrixMessage(this Exception e, string error) => FormatException(error, e);
+
+#endregion
+
+ public static RoomMessageEventContent FormatWarning(string warning) =>
+ new(body: warning, messageType: "m.text") {
+ FormattedBody = $"<font color=\"#FFFF00\">{warning}</font>",
+ Format = "org.matrix.custom.html"
+ };
+
+ public static RoomMessageEventContent FormatWarningJson(string warning, object data) =>
+ new(body: warning, messageType: "m.text") {
+ FormattedBody = $"<font color=\"#FFFF00\">{warning}: <pre><code>{data.ToJson(ignoreNull: true)}</code></pre></font>",
+ Format = "org.matrix.custom.html"
+ };
+
+ public static RoomMessageEventContent Concat(this RoomMessageEventContent a, RoomMessageEventContent b) =>
+ new(body: $"{a.Body}{b.Body}", messageType: a.MessageType) {
+ FormattedBody = $"{a.FormattedBody}{b.FormattedBody}",
+ Format = a.Format
+ };
+
+ public static RoomMessageEventContent ConcatLine(this RoomMessageEventContent a, RoomMessageEventContent b) =>
+ new(body: $"{a.Body}\n{b.Body}", messageType: "m.text") {
+ FormattedBody = $"{a.FormattedBody}<br/>{b.FormattedBody}",
+ Format = "org.matrix.custom.html"
+ };
+}
\ No newline at end of file
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