wip: move out of dioxus main

src/develop.rs

@@ -0,0 +1,111 @@
+use crate::{builder::BuildConfig, cli::DevelopOptions, config::Config, error::Result};
+use async_std::prelude::FutureExt;
+
+use async_std::future;
+use async_std::prelude::*;
+
+use log::info;
+use notify::{RecommendedWatcher, RecursiveMode, Watcher};
+use std::path::PathBuf;
+use std::time::Duration;
+
+pub struct DevelopConfig {}
+impl Into<DevelopConfig> for DevelopOptions {
+    fn into(self) -> DevelopConfig {
+        DevelopConfig {}
+    }
+}
+
+pub async fn start(config: &Config, _options: &DevelopConfig) -> Result<()> {
+    log::info!("Starting development server 🚀");
+
+    let Config { out_dir, .. } = config;
+
+    // Spawn the server onto a seperate task
+    // This lets the task progress while we handle file updates
+    let server = async_std::task::spawn(launch_server(out_dir.clone()));
+    let watcher = async_std::task::spawn(watch_directory(config.clone()));
+
+    match server.race(watcher).await {
+        Err(e) => log::warn!("Error running development server, {:?}", e),
+        _ => {}
+    }
+
+    Ok(())
+}
+
+async fn watch_directory(config: Config) -> Result<()> {
+    // Create a channel to receive the events.
+    let (watcher_tx, watcher_rx) = async_std::channel::bounded(100);
+
+    // Automatically select the best implementation for your platform.
+    // You can also access each implementation directly e.g. INotifyWatcher.
+    let mut watcher: RecommendedWatcher = Watcher::new_immediate(move |res| {
+        async_std::task::block_on(watcher_tx.send(res));
+    })
+    .expect("failed to make watcher");
+
+    let src_dir = crate::cargo::crate_root()?;
+
+    // Add a path to be watched. All files and directories at that path and
+    // below will be monitored for changes.
+    watcher
+        .watch(src_dir.join("src"), RecursiveMode::Recursive)
+        .expect("Failed to watch dir");
+
+    watcher
+        .watch(src_dir.join("examples"), RecursiveMode::Recursive)
+        .expect("Failed to watch dir");
+
+    let build_config = BuildConfig::default();
+
+    'run: loop {
+        crate::builder::build(&config, &build_config)?;
+
+        // Wait for the message with a debounce
+        let _msg = watcher_rx
+            .recv()
+            .join(future::ready(1_usize).delay(Duration::from_millis(2000)))
+            .await;
+
+        info!("File updated, rebuilding app");
+    }
+    Ok(())
+}
+
+async fn launch_server(outdir: PathBuf) -> Result<()> {
+    let _crate_dir = crate::cargo::crate_root()?;
+    let _workspace_dir = crate::cargo::workspace_root()?;
+
+    let mut app = tide::with_state(ServerState::new(outdir.to_owned()));
+    let p = outdir.display().to_string();
+
+    app.at("/")
+        .get(|req: tide::Request<ServerState>| async move {
+            log::info!("Connected to development server");
+            let state = req.state();
+            Ok(tide::Body::from_file(state.serv_path.clone().join("index.html")).await?)
+        })
+        .serve_dir(p)?;
+
+    let port = "8080";
+    let serve_addr = format!("0.0.0.0:{}", port);
+    // let serve_addr = format!("127.0.0.1:{}", port);
+
+    info!("App available at http://{}", serve_addr);
+    app.listen(serve_addr).await?;
+    Ok(())
+}
+
+/// https://github.com/http-rs/tide/blob/main/examples/state.rs
+/// Tide seems to prefer using state instead of injecting into the app closure
+/// The app closure needs to be static and
+#[derive(Clone)]
+struct ServerState {
+    serv_path: PathBuf,
+}
+impl ServerState {
+    fn new(serv_path: PathBuf) -> Self {
+        Self { serv_path }
+    }
+}