feat: create an async fs lua module

examples/multipart.lua

@@ -1,11 +1,12 @@
 local app = create_app()
 
 app:post("/", function(req,res)
-  for k,v in pairs(req.parts) do
-    print("name", k)
-    print("filename", v.filename)
-    print("content", v.content)
+  if req.parts.myfile == nil then
+    res.status = 400
+    res.body = "Missing myfile field"
+    return res
   end
+  fs:write("yololo.txt", req.parts.myfile.content)
   return res
 end)
 

src/api/builtins.rs

@@ -1,14 +0,0 @@
-use mlua::Lua;
-use std::time::Duration;
-use tokio::time::sleep;
-
-pub fn load_builtins(lua: &Lua) {
-    let sleep = lua
-        .create_async_function(|_l, n: u64| async move {
-            sleep(Duration::from_secs(n)).await;
-            Ok(())
-        })
-        .unwrap();
-
-    lua.globals().set("sleep", sleep).unwrap();
-}

src/api/fs.rs

@@ -0,0 +1,16 @@
+use mlua::UserData;
+
+#[derive(Clone)]
+pub struct FS {}
+
+impl UserData for FS {
+    fn add_methods<'lua, M: mlua::UserDataMethods<'lua, Self>>(methods: &mut M) {
+        methods.add_async_method(
+            "write",
+            |_l, _this, (filename, contents): (String, String)| async move {
+                tokio::fs::write(filename, contents).await.unwrap();
+                Ok(())
+            },
+        )
+    }
+}

src/api/mod.rs

@@ -1 +1,22 @@
-pub mod builtins;
+pub mod fs;
+
+use mlua::Lua;
+use std::time::Duration;
+use tokio::time::sleep;
+
+use self::fs::FS;
+
+pub fn load_builtins(lua: &Lua) {
+    let sleep = lua
+        .create_async_function(|_l, n: u64| async move {
+            sleep(Duration::from_secs(n)).await;
+            Ok(())
+        })
+        .unwrap();
+
+    lua.globals().set("sleep", sleep).unwrap();
+}
+
+pub fn load_apis(lua: &Lua) {
+    lua.globals().set("fs", FS {}).unwrap();
+}

src/cli/main.rs

@@ -1,7 +1,7 @@
 use std::error::Error;
 use std::{env, fs};
 
-use tchoutchou::api::builtins::load_builtins;
+use tchoutchou::api::{load_apis, load_builtins};
 use tchoutchou::internal::core::runtime::Runtime;
 
 #[tokio::main]
@@ -30,6 +30,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
     };
 
     runtime.load(&load_builtins);
+    runtime.load(&load_apis);
     runtime.start().await;
 
     Ok(())