1 files changed, 29 insertions, 0 deletions
diff --git a/MatrixContentFilter/Handlers/InviteHandler.cs b/MatrixContentFilter/Handlers/InviteHandler.cs
new file mode 100644
index 0000000..75e5506
--- /dev/null
+++ b/MatrixContentFilter/Handlers/InviteHandler.cs
@@ -0,0 +1,29 @@
+using LibMatrix.EventTypes.Spec;
+using LibMatrix.Helpers;
+using LibMatrix.Utilities.Bot.Services;
+
+namespace MatrixContentFilter.Handlers;
+
+public static class InviteHandler {
+    public static async Task HandleAsync(InviteHandlerHostedService.InviteEventArgs invite) {
+        var room = invite.Homeserver.GetRoom(invite.RoomId);
+        if (!invite.MemberEvent.Sender!.EndsWith("rory.gay")) {
+            await room.LeaveAsync($"{invite.MemberEvent.Sender} is not allowed to invite this bot!");
+            return;
+        }
+
+        try {
+            await room.JoinAsync(reason: $"I was invited by {invite.MemberEvent.Sender}");
+            await room.SendMessageEventAsync(new RoomMessageEventContent("m.notice", "Hello! I've arrived!"));
+        } catch (Exception e) {
+            var newroom = await invite.Homeserver.CreateRoom(new() {
+                Name = $"Join error report",
+                Invite = [invite.MemberEvent.Sender]
+            });
+            var msb = new MessageBuilder();
+            msb.WithColoredBody("#EE4444", $"An error occurred during accepting the invite to {invite.RoomId}")
+                .WithCodeBlock(e.ToString(), "csharp");
+            await newroom.SendMessageEventAsync(msb.Build());
+        }
+    }
+}
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