Merge commit 'd803bfe2b1fe7f5e219e50ac20d6801a0a58ac75' as 'vendor/ruvector'

vendor/ruvector/examples/rvf-desktop/src/main.rs

@@ -0,0 +1,140 @@
+//! RuVector Desktop — wry webview wrapping the Causal Atlas dashboard.
+//!
+//! Embeds the entire Vite-built dashboard (HTML, JS, CSS, WASM) at compile
+//! time via rust-embed, serves it from a tiny background HTTP server, and
+//! opens a native webview window. Single binary, no external dependencies.
+
+use rust_embed::Embed;
+use std::net::TcpListener;
+use std::sync::Arc;
+use std::thread;
+use tao::dpi::LogicalSize;
+use tao::event::{Event, WindowEvent};
+use tao::event_loop::{ControlFlow, EventLoop};
+use tao::window::WindowBuilder;
+use wry::WebViewBuilder;
+
+/// All files from `../../rvf/dashboard/dist/` are embedded at compile time.
+/// This includes index.html, JS chunks, CSS, and the WASM solver binary.
+#[derive(Embed)]
+#[folder = "../rvf/dashboard/dist/"]
+struct DashboardAssets;
+
+/// Find an available port to serve on.
+fn find_port() -> u16 {
+    let listener = TcpListener::bind("127.0.0.1:0").expect("bind ephemeral port");
+    listener.local_addr().unwrap().port()
+}
+
+/// Start a tiny HTTP server that serves embedded dashboard files.
+fn start_asset_server(port: u16) {
+    let addr = format!("127.0.0.1:{port}");
+    let server = Arc::new(tiny_http::Server::http(&addr).expect("start HTTP server"));
+
+    // Spawn worker threads to handle requests
+    for _ in 0..2 {
+        let srv = Arc::clone(&server);
+        thread::spawn(move || {
+            loop {
+                let request = match srv.recv() {
+                    Ok(r) => r,
+                    Err(_) => break,
+                };
+
+                let url_path = request.url().trim_start_matches('/');
+                let path = if url_path.is_empty() { "index.html" } else { url_path };
+
+                // Try to find the embedded file
+                let response = match DashboardAssets::get(path) {
+                    Some(file) => {
+                        let mime = mime_guess::from_path(path).first_or_octet_stream();
+                        let data = file.data.to_vec();
+                        tiny_http::Response::from_data(data)
+                            .with_header(
+                                tiny_http::Header::from_bytes(
+                                    b"Content-Type",
+                                    mime.as_ref().as_bytes(),
+                                )
+                                .unwrap(),
+                            )
+                            .with_header(
+                                tiny_http::Header::from_bytes(
+                                    b"Access-Control-Allow-Origin",
+                                    b"*",
+                                )
+                                .unwrap(),
+                            )
+                    }
+                    None => {
+                        // SPA fallback: serve index.html for hash-routed paths
+                        match DashboardAssets::get("index.html") {
+                            Some(file) => {
+                                let data = file.data.to_vec();
+                                tiny_http::Response::from_data(data).with_header(
+                                    tiny_http::Header::from_bytes(
+                                        b"Content-Type",
+                                        b"text/html; charset=utf-8",
+                                    )
+                                    .unwrap(),
+                                )
+                            }
+                            None => tiny_http::Response::from_string("Not Found")
+                                .with_status_code(404),
+                        }
+                    }
+                };
+
+                let _ = request.respond(response);
+            }
+        });
+    }
+}
+
+fn main() {
+    let port = find_port();
+    let url = format!("http://127.0.0.1:{port}");
+
+    // Start embedded asset server in background
+    start_asset_server(port);
+
+    // Give server a moment to bind
+    thread::sleep(std::time::Duration::from_millis(50));
+
+    // Create native window + webview
+    let event_loop = EventLoop::new();
+    let window = WindowBuilder::new()
+        .with_title("RuVector — Causal Atlas")
+        .with_inner_size(LogicalSize::new(1400.0, 900.0))
+        .with_min_inner_size(LogicalSize::new(800.0, 500.0))
+        .build(&event_loop)
+        .expect("create window");
+
+    let _webview = WebViewBuilder::new()
+        .with_url(&url)
+        .with_devtools(cfg!(debug_assertions))
+        .with_initialization_script(
+            r#"
+            // Inject desktop app context so the dashboard knows it's running natively
+            window.__RUVECTOR_DESKTOP__ = true;
+            window.__RUVECTOR_VERSION__ = '2.0.0';
+            "#,
+        )
+        .build(&window)
+        .expect("create webview");
+
+    println!("RuVector Desktop v2.0.0");
+    println!("  Dashboard: {url}");
+    println!("  Window: 1400x900");
+
+    event_loop.run(move |event, _, control_flow| {
+        *control_flow = ControlFlow::Wait;
+
+        if let Event::WindowEvent {
+            event: WindowEvent::CloseRequested,
+            ..
+        } = event
+        {
+            *control_flow = ControlFlow::Exit;
+        }
+    });
+}