Add back-end placeholder

.gitignore

@@ -40,3 +40,11 @@ __pycache__/
 yalc.lock
 
 .vscode/settings.json
+
+# ignore Rust compiler files
+/server/target
+backend
+/bin
+
+# packaged teasers
+*.zip

main.py

@@ -1,9 +1,16 @@
+import pathlib
+import subprocess
+import asyncio
+import os
+
+HOME_DIR = str(pathlib.Path(os.getcwd()).parent.parent.resolve())
+PARENT_DIR = str(pathlib.Path(__file__).parent.resolve())
+
 class Plugin:
-    # A normal method. It can be called from JavaScript using call_plugin_function("method_1", argument1, argument2)
-    async def add(self, left, right):
-        return left + right
-
-
+    backend_proc = None
     # Asyncio-compatible long-running code, executed in a task when the plugin is loaded
     async def _main(self):
-        pass
+        # startup
+        self.backend_proc = subprocess.Popen([PARENT_DIR + "/bin/backend"])
+        while True:
+            asyncio.sleep(1)

package.json

@@ -40,7 +40,8 @@
   },
   "dependencies": {
     "decky-frontend-lib": "^1.0.1",
-    "react-icons": "^4.3.1"
+    "react-icons": "^4.3.1",
+    "usdpl-front": "file:./src/usdpl-front"
   },
   "pnpm": {
     "peerDependencyRules": {

server/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "backend" # TODO replace with plugin name (also in build.sh)
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+usdpl-back = { version = "0.5.3", features = ["decky"] }
+
+# logging
+log = "0.4"
+simplelog = "0.12"
+
+[profile.release]
+debug = false
+strip = true
+lto = true
+codegen-units = 4

server/Cross.toml

@@ -0,0 +1,2 @@
+[build]
+default-target = "x86_64-unknown-linux-gnu"

server/build.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+cargo build --release
+mkdir ../bin
+# TODO replace "backend" \/ with binary name
+cp ./target/release/backend ../bin/backend

server/src/main.rs

@@ -0,0 +1,25 @@
+use simplelog::{WriteLogger, LevelFilter};
+
+use usdpl_back::Instance;
+use usdpl_back::core::serdes::Primitive;
+
+const PORT: u16 = 54321; // TODO replace with something unique
+
+const PACKAGE_NAME: &'static str = env!("CARGO_PKG_NAME");
+const PACKAGE_VERSION: &'static str = env!("CARGO_PKG_VERSION");
+
+fn main() -> Result<(), ()> {
+    let log_filepath = format!("/tmp/{}.log", PACKAGE_NAME);
+    WriteLogger::init(
+        #[cfg(debug_assertions)]{LevelFilter::Debug},
+        #[cfg(not(debug_assertions))]{LevelFilter::Info},
+        Default::default(),
+        std::fs::File::create(&log_filepath).unwrap()
+    ).unwrap();
+
+    log::info!("Starting back-end ({} v{})", PACKAGE_NAME, PACKAGE_VERSION);
+    println!("Starting back-end ({} v{})", PACKAGE_NAME, PACKAGE_VERSION);
+    Instance::new(PORT)
+        .register("hello", |_: Vec<Primitive>| vec![format!("Hello {}", PACKAGE_NAME).into()])
+        .run_blocking()
+}

src/index.tsx

@@ -16,6 +16,10 @@ import { FaShip } from "react-icons/fa";
 
 import logo from "../assets/logo.png";
 
+import {init_usdpl, target, init_embedded, call_backend} from "usdpl-front";
+
+const USDPL_PORT: number = 54321;
+
 // interface AddMethodArgs {
 //   left: number;
 //   right: number;
@@ -36,6 +40,12 @@ const Content: VFC<{ serverAPI: ServerAPI }> = ({}) => {
   //     setResult(result.result);
   //   }
   // };
+  
+  // call hello callback on backend
+  (async () => {
+    let response = await call_backend("hello", []);
+    console.log("Backend says:", response);
+  })();
 
   return (
     <PanelSection title="Panel Section">
@@ -93,6 +103,14 @@ export default definePlugin((serverApi: ServerAPI) => {
   serverApi.routerHook.addRoute("/decky-plugin-test", DeckyPluginRouterTest, {
     exact: true,
   });
+  
+  // init USDPL WASM frontend
+  // this is required to interface with the backend
+  (async () => {
+    await init_embedded();
+    init_usdpl(USDPL_PORT);
+    console.log("USDPL started for framework: " + target());
+  })();
 
   return {
     title: <div className={staticClasses.Title}>Example Plugin</div>,

src/usdpl-front/usdpl.d.ts

@@ -0,0 +1,57 @@
+/* tslint:disable */
+/* eslint-disable */
+/**
+* Initialize the front-end library
+* @param {number} port
+*/
+export function init_usdpl(port: number): void;
+/**
+* Get the targeted plugin framework, or "any" if unknown
+* @returns {string}
+*/
+export function target(): string;
+/**
+* Call a function on the back-end.
+* Returns null (None) if this fails for any reason.
+* @param {string} name
+* @param {any[]} parameters
+* @returns {Promise<any>}
+*/
+export function call_backend(name: string, parameters: any[]): Promise<any>;
+/**
+*/
+export class UsdplContext {
+  free(): void;
+}
+
+export type InitInput = RequestInfo | URL | Response | BufferSource | WebAssembly.Module;
+
+export interface InitOutput {
+  readonly memory: WebAssembly.Memory;
+  readonly __wbg_usdplcontext_free: (a: number) => void;
+  readonly init_usdpl: (a: number) => void;
+  readonly target: (a: number) => void;
+  readonly call_backend: (a: number, b: number, c: number, d: number) => number;
+  readonly __wbindgen_malloc: (a: number) => number;
+  readonly __wbindgen_realloc: (a: number, b: number, c: number) => number;
+  readonly __wbindgen_export_2: WebAssembly.Table;
+  readonly _dyn_core__ops__function__FnMut__A____Output___R_as_wasm_bindgen__closure__WasmClosure___describe__invoke__h16ac289f583b8044: (a: number, b: number, c: number) => void;
+  readonly __wbindgen_add_to_stack_pointer: (a: number) => number;
+  readonly __wbindgen_free: (a: number, b: number) => void;
+  readonly __wbindgen_exn_store: (a: number) => void;
+  readonly wasm_bindgen__convert__closures__invoke2_mut__ha1c5a356ae6a22de: (a: number, b: number, c: number, d: number) => void;
+}
+
+/**
+* If `module_or_path` is {RequestInfo} or {URL}, makes a request and
+* for everything else, calls `WebAssembly.instantiate` directly.
+*
+* @param {InitInput | Promise<InitInput>} module_or_path
+*
+* @returns {Promise<InitOutput>}
+*/
+export default function init (module_or_path?: InitInput | Promise<InitInput>): Promise<InitOutput>;
+
+
+// USDPL customization
+export function init_embedded();

src/usdpl-front/usdpl_bg.wasm.d.ts

@@ -0,0 +1,15 @@
+/* tslint:disable */
+/* eslint-disable */
+export const memory: WebAssembly.Memory;
+export function __wbg_usdplcontext_free(a: number): void;
+export function init_usdpl(a: number): void;
+export function target(a: number): void;
+export function call_backend(a: number, b: number, c: number, d: number): number;
+export function __wbindgen_malloc(a: number): number;
+export function __wbindgen_realloc(a: number, b: number, c: number): number;
+export const __wbindgen_export_2: WebAssembly.Table;
+export function _dyn_core__ops__function__FnMut__A____Output___R_as_wasm_bindgen__closure__WasmClosure___describe__invoke__h16ac289f583b8044(a: number, b: number, c: number): void;
+export function __wbindgen_add_to_stack_pointer(a: number): number;
+export function __wbindgen_free(a: number, b: number): void;
+export function __wbindgen_exn_store(a: number): void;
+export function wasm_bindgen__convert__closures__invoke2_mut__ha1c5a356ae6a22de(a: number, b: number, c: number, d: number): void;

src/usdpl-front/usdpl_front.d.ts

@@ -0,0 +1,60 @@
+/* tslint:disable */
+/* eslint-disable */
+/**
+* Initialize the front-end library
+* @param {number} port
+*/
+export function init_usdpl(port: number): void;
+/**
+* Get the targeted plugin framework, or "any" if unknown
+* @returns {string}
+*/
+export function target(): string;
+/**
+* Call a function on the back-end.
+* Returns null (None) if this fails for any reason.
+* @param {string} name
+* @param {any[]} parameters
+* @returns {Promise<any>}
+*/
+export function call_backend(name: string, parameters: any[]): Promise<any>;
+
+export type InitInput = RequestInfo | URL | Response | BufferSource | WebAssembly.Module;
+
+export interface InitOutput {
+  readonly memory: WebAssembly.Memory;
+  readonly init_usdpl: (a: number) => void;
+  readonly target: (a: number) => void;
+  readonly call_backend: (a: number, b: number, c: number, d: number) => number;
+  readonly __wbindgen_export_0: (a: number) => number;
+  readonly __wbindgen_export_1: (a: number, b: number, c: number) => number;
+  readonly __wbindgen_export_2: WebAssembly.Table;
+  readonly __wbindgen_export_3: (a: number, b: number, c: number) => void;
+  readonly __wbindgen_add_to_stack_pointer: (a: number) => number;
+  readonly __wbindgen_export_4: (a: number, b: number) => void;
+  readonly __wbindgen_export_5: (a: number) => void;
+  readonly __wbindgen_export_6: (a: number, b: number, c: number, d: number) => void;
+}
+
+/**
+* Synchronously compiles the given `bytes` and instantiates the WebAssembly module.
+*
+* @param {BufferSource} bytes
+*
+* @returns {InitOutput}
+*/
+export function initSync(bytes: BufferSource): InitOutput;
+
+/**
+* If `module_or_path` is {RequestInfo} or {URL}, makes a request and
+* for everything else, calls `WebAssembly.instantiate` directly.
+*
+* @param {InitInput | Promise<InitInput>} module_or_path
+*
+* @returns {Promise<InitOutput>}
+*/
+export default function init (module_or_path?: InitInput | Promise<InitInput>): Promise<InitOutput>;
+
+
+// USDPL customization
+export function init_embedded();

src/usdpl-front/usdpl_front_bg.wasm.d.ts

@@ -0,0 +1,14 @@
+/* tslint:disable */
+/* eslint-disable */
+export const memory: WebAssembly.Memory;
+export function init_usdpl(a: number): void;
+export function target(a: number): void;
+export function call_backend(a: number, b: number, c: number, d: number): number;
+export function __wbindgen_export_0(a: number): number;
+export function __wbindgen_export_1(a: number, b: number, c: number): number;
+export const __wbindgen_export_2: WebAssembly.Table;
+export function __wbindgen_export_3(a: number, b: number, c: number): void;
+export function __wbindgen_add_to_stack_pointer(a: number): number;
+export function __wbindgen_export_4(a: number, b: number): void;
+export function __wbindgen_export_5(a: number): void;
+export function __wbindgen_export_6(a: number, b: number, c: number, d: number): void;