From b821cdc15295f5a37ac058e27f045331d9377779 Mon Sep 17 00:00:00 2001
From: alemi <me@alemi.dev>
Date: Thu, 3 Oct 2024 03:41:28 +0200
Subject: [PATCH] fix(lua): add Delta object

---
 src/ffi/lua/buffer.rs       | 15 +++++++++++++++
 src/ffi/lua/ext/callback.rs |  4 ++++
 2 files changed, 19 insertions(+)

diff --git a/src/ffi/lua/buffer.rs b/src/ffi/lua/buffer.rs
index 2a46dc6..17d3627 100644
--- a/src/ffi/lua/buffer.rs
+++ b/src/ffi/lua/buffer.rs
@@ -1,4 +1,6 @@
 use crate::prelude::*;
+use crate::api::change::{Acknowledgeable, Delta};
+use crate::buffer::controller::BufferAck;
 use mlua::prelude::*;
 use mlua_codemp_patch as mlua;
 
@@ -59,3 +61,16 @@ impl LuaUserData for CodempTextChange {
 		methods.add_method("apply", |_, this, (txt,): (String,)| Ok(this.apply(&txt)));
 	}
 }
+
+impl LuaUserData for Delta<BufferAck> {
+	fn add_fields<F: LuaUserDataFields<Self>>(fields: &mut F) {
+		fields.add_field_method_get("change", |_, this| Ok(this.change.clone()));
+		fields.add_field_method_get("ack", |_, this| Ok(this.ack.clone()));
+	}
+}
+
+impl LuaUserData for BufferAck {
+	fn add_methods<M: LuaUserDataMethods<Self>>(methods: &mut M) {
+		methods.add_method_mut("send", |_, this, ()| Ok(this.send()));
+	}
+}
diff --git a/src/ffi/lua/ext/callback.rs b/src/ffi/lua/ext/callback.rs
index ce96c31..7deb8a0 100644
--- a/src/ffi/lua/ext/callback.rs
+++ b/src/ffi/lua/ext/callback.rs
@@ -1,5 +1,7 @@
 use crate::ext::IgnorableError;
 use crate::prelude::*;
+use crate::api::change::Delta;
+use crate::buffer::controller::BufferAck;
 use mlua::prelude::*;
 use mlua_codemp_patch as mlua;
 
@@ -111,4 +113,6 @@ callback_args! {
 	MaybeCursor: Option<CodempCursor>,
 	TextChange: CodempTextChange,
 	MaybeTextChange: Option<CodempTextChange>,
+	Delta: Delta<BufferAck>,
+	MaybeDelta: Option<Delta<BufferAck>>,
 }