mirror of
https://github.com/storytold/lightcraft.git
synced 2026-10-28 12:08:10 -06:00
Brandon ThomasandClaude Opus 5.5
5e618c553a
When open_library failed, the desktop app (and the web build) quietly ran an in-memory session seeded with the demo photos: it looked like a reset library and everything done in it was lost at quit. - The session now starts empty and in memory (no demo photos) and LightcraftApp::library_problem shows a blocking window with the path and the error: Try Again, Choose Another Library… (app.openLibrary), Continue Without Saving, Quit. Command-line files are imported once the user has chosen. - A temporary session shows a banner under the top bar (with Open Library…) for as long as it lasts; it has no library, so nothing is written anywhere. Opening a library ends it. - ui.inspect → libraryProblem; widget ids for automation; documented in control-protocol.md. - Web build: same window (Try Again disabled: reloading the page retries). - Headless UI test: locked library → window → Continue Without Saving → banner, nothing written to the library → lock released → Try Again opens it. Checked in the real app over the control channel too. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
557 lines
22 KiB
Rust
557 lines
22 KiB
Rust
//! Browser host: opens the library in browser storage, starts the render workers and eframe on
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//! `<canvas id="lightcraft_canvas">`, wires the file picker and drag-and-drop, and turns exports
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//! into downloads.
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use std::cell::Cell;
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use std::rc::Rc;
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use std::sync::Arc;
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use lightcraft_engine::Session;
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use lightcraft_engine::catalog::Source;
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use lightcraft_engine::library::LibraryStores;
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use lightcraft_ui_egui::{LightcraftApp, Services, UiState};
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use serde_json::json;
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use wasm_bindgen::JsCast;
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use wasm_bindgen::prelude::*;
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use crate::backend::Backend;
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use crate::bench::Bench;
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use crate::files::{Files, FlushOp, LIBRARY_FILES};
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use crate::store::{Originals, content_hash, download_name, storage_key};
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use crate::wire::ThumbIndex;
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use crate::workers::{THUMB_INDEX, Workers};
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const ACCEPT: &str = ".jpg,.jpeg,.png,.tif,.tiff,.webp,.dng,.cr2,.nef,.arw,.psd,.jxl,.gif,.bmp";
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/// Where the library files live in browser storage.
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const LIBRARY_DIR: &str = "library";
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/// How often view state, UI prefs and the thumbnail index are saved (ms).
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const SAVE_EVERY_MS: f64 = 1000.0;
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/// The page's window (`None` only outside a browser page, e.g. in a worker).
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fn window() -> Option<web_sys::Window> {
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web_sys::window()
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}
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/// Milliseconds since navigation start.
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fn perf_now() -> f64 {
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window().and_then(|w| w.performance()).map(|p| p.now()).unwrap_or(0.0)
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}
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fn set_status(text: &str) {
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if let Some(el) = window().and_then(|w| w.document()).and_then(|d| d.get_element_by_id("lightcraft_status")) {
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el.set_text_content(Some(text));
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}
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}
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fn library_key(name: &str) -> String {
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format!("{LIBRARY_DIR}/{name}")
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}
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/// URL options (`?bench&store=idb&workers=2&reset`).
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struct Options {
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bench: bool,
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/// "opfs" (default: OPFS, falling back to IndexedDB), "idb" or "memory".
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store: String,
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workers: Option<usize>,
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reset: bool,
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}
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impl Options {
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fn from_url() -> Options {
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let q = window().and_then(|w| w.location().search().ok()).unwrap_or_default();
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let params: Vec<(String, String)> = q
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.trim_start_matches('?')
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.split('&')
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.filter(|p| !p.is_empty())
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.map(|p| match p.split_once('=') {
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Some((k, v)) => (k.to_string(), v.to_string()),
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None => (p.to_string(), String::new()),
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})
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.collect();
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let get = |k: &str| params.iter().find(|(n, _)| n == k).map(|(_, v)| v.clone());
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Options {
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bench: get("bench").is_some(),
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store: get("store").filter(|s| s == "idb" || s == "memory").unwrap_or_else(|| "opfs".into()),
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workers: get("workers").and_then(|v| v.parse().ok()),
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reset: get("reset").is_some(),
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}
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}
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}
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/// Store a picked/dropped file (bytes into browser storage, then queue its import).
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async fn store_file(originals: Originals, backend: Option<Backend>, name: String, bytes: Vec<u8>, ctx: egui::Context) {
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let hash = content_hash(&bytes);
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if let Some(b) = &backend
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&& let Err(e) = b.write(&storage_key(&hash), &bytes).await
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{
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// still importable for this session; it won't survive a reload
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log::error!("storing {name} in browser storage failed: {e}");
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}
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originals.added(&name, &hash, Arc::from(bytes));
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ctx.request_repaint();
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}
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/// Read a browser `File` into storage.
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async fn read_file(originals: Originals, backend: Option<Backend>, file: web_sys::File, ctx: egui::Context) {
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match wasm_bindgen_futures::JsFuture::from(file.array_buffer()).await {
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Ok(buf) => store_file(originals, backend, file.name(), js_sys::Uint8Array::new(&buf).to_vec(), ctx).await,
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Err(e) => log::warn!("reading {}: {e:?}", file.name()),
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}
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}
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/// Show the browser's open dialog; picked files are imported asynchronously.
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fn open_picker(originals: Originals, backend: Option<Backend>, ctx: egui::Context) {
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let Some(doc) = window().and_then(|w| w.document()) else { return };
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let Ok(input) = doc.create_element("input").map(|e| e.unchecked_into::<web_sys::HtmlInputElement>()) else { return };
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input.set_type("file");
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input.set_multiple(true);
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input.set_accept(ACCEPT);
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let inp = input.clone();
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let on_change = Closure::<dyn FnMut()>::new(move || {
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if let Some(files) = inp.files() {
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for i in 0..files.length() {
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if let Some(f) = files.get(i) {
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wasm_bindgen_futures::spawn_local(read_file(originals.clone(), backend.clone(), f, ctx.clone()));
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}
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}
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}
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});
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input.set_onchange(Some(on_change.as_ref().unchecked_ref()));
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on_change.forget();
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input.click();
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}
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/// Offer `bytes` as a download named after `path`.
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fn download(path: &str, bytes: &[u8]) -> Result<(), String> {
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let e = |e: JsValue| format!("download failed: {e:?}");
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let arr = js_sys::Array::of1(&js_sys::Uint8Array::from(bytes));
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let opts = web_sys::BlobPropertyBag::new();
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let name = download_name(path);
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opts.set_type(crate::store::mime_for(name));
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let blob = web_sys::Blob::new_with_u8_array_sequence_and_options(&arr, &opts).map_err(e)?;
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let url = web_sys::Url::create_object_url_with_blob(&blob).map_err(e)?;
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let doc = window().and_then(|w| w.document()).ok_or("no document")?;
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let a: web_sys::HtmlAnchorElement = doc.create_element("a").map_err(e)?.unchecked_into();
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a.set_href(&url);
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a.set_download(name);
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a.click();
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// revoke once the click has been handled
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let revoke = Closure::once_into_js(move || {
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let _ = web_sys::Url::revoke_object_url(&url);
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});
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if let Some(w) = window() {
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let _ = w.set_timeout_with_callback_and_timeout_and_arguments_0(revoke.unchecked_ref(), 5000);
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}
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log::info!("exported {name} ({} bytes)", bytes.len());
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Ok(())
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}
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fn services(originals: Originals, backend: Option<Backend>, ctx: egui::Context) -> Services {
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Services {
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pick_files: Some(Box::new(move || {
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open_picker(originals.clone(), backend.clone(), ctx.clone());
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Vec::new() // files arrive asynchronously and are imported on a later frame
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})),
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// Preset files: browser pickers are asynchronous; not wired on the web yet.
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pick_preset_files: None,
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pick_tracklog: None,
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save_preset_file: None,
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pick_curve_preset_files: None,
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save_curve_preset_file: None,
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write: Some(Box::new(download)),
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// downloads happen on the main thread: exports run in the foreground on the web
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write_shared: None,
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png: Some(Box::new(|img: &lightcraft_raster::Rgba8| {
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lightcraft_codecs::encode_png(&lightcraft_codecs::EncodeImage::rgba8(img), &lightcraft_codecs::EncodeMeta::default()).unwrap_or_default()
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})),
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reveal: None,
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open_with: None,
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open_url: Some(Box::new(|url: &str| {
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let w = web_sys::window().ok_or("no window")?;
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w.open_with_url_and_target(url, "_blank").map(|_| ()).map_err(|_| "the browser blocked the new tab".to_string())
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})),
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pick_folder: None,
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}
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}
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/// Write dirty library files to storage, in order, until none are left.
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async fn flush(files: Files, backend: Backend, flushing: Rc<Cell<bool>>) {
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'outer: loop {
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let ops = files.take_dirty();
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if ops.is_empty() {
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break;
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}
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for (i, op) in ops.iter().enumerate() {
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let r = match op {
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FlushOp::Write { name, data } => backend.write(&library_key(name), data).await,
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FlushOp::Append { name, offset, data } => backend.write_at(&library_key(name), Some(*offset), data).await,
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};
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if let Err(e) = r {
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log::error!("saving {} failed: {e}", op.name());
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files.failed(&ops[i..]);
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break 'outer;
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}
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}
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}
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flushing.set(false);
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}
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/// Everything loaded before the UI starts.
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struct Boot {
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opts: Options,
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backend: Option<Backend>,
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files: Files,
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index: ThumbIndex,
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}
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async fn boot(opts: Options) -> Boot {
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let t0 = perf_now();
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let backend = if opts.store == "memory" {
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None
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} else {
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match Backend::open(opts.store == "idb").await {
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Ok(b) => Some(b),
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Err(e) => {
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log::error!("no browser storage ({e}); this session won't be saved");
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None
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}
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}
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};
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let files = Files::default();
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let mut index = ThumbIndex::default();
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if let Some(b) = &backend {
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if opts.reset {
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match b.clear().await {
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Ok(()) => log::info!("lightcraft: storage cleared (?reset)"),
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Err(e) => log::error!("clearing storage: {e}"),
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}
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}
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for name in LIBRARY_FILES {
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match b.read(&library_key(name)).await {
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Ok(Some(data)) => files.preload(name, data),
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Ok(None) => {}
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Err(e) => log::error!("reading {name}: {e}"),
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}
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}
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if let Ok(Some(j)) = b.read(THUMB_INDEX).await {
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index = ThumbIndex::from_json(&j);
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}
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crate::backend::request_persistence();
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// thumbnails stored without an index entry (index saved late, or lost): delete them
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let b2 = b.clone();
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let known: std::collections::HashSet<String> = b
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.list("thumbs")
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.await
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.unwrap_or_default()
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.into_iter()
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.filter(|n| n.ends_with(".jpg"))
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.map(|n| n.trim_end_matches(".jpg").to_string())
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.collect();
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let orphans: Vec<String> = known.into_iter().filter(|k| !index.contains(k)).collect();
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if !orphans.is_empty() {
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wasm_bindgen_futures::spawn_local(async move {
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for k in &orphans {
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let _ = b2.remove(&crate::wire::thumb_storage_key(k)).await;
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}
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log::info!("thumbnail cache: removed {} unindexed files", orphans.len());
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});
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}
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}
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log::info!(
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"lightcraft: storage {} opened in {:.0} ms ({} thumbnails indexed, {:.1} MB)",
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backend.as_ref().map_or("memory", |b| b.kind()),
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perf_now() - t0,
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index.len(),
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index.total() as f64 / 1e6
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);
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Boot { opts, backend, files, index }
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}
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struct WebApp {
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app: LightcraftApp,
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originals: Originals,
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files: Files,
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backend: Option<Backend>,
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workers: Option<Workers>,
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flushing: Rc<Cell<bool>>,
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bench: Option<Bench>,
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first_frame_logged: bool,
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last_save: f64,
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ui_written: Vec<u8>,
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}
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impl WebApp {
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fn new(cc: &eframe::CreationContext<'_>, boot: Boot) -> Self {
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let Boot { opts, backend, files, index } = boot;
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let originals = Originals::default();
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let t = perf_now();
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let mut session = Session::new();
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originals.install(&mut session);
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let stores = LibraryStores {
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dir: format!("browser:{}/{LIBRARY_DIR}", backend.as_ref().map_or("memory", |b| b.kind())).into(),
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catalog: Box::new(files.store()),
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files: Box::new(files.store()),
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on_disk: false,
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};
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let mut problem = None;
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match session.open_library_in(stores, true).cloned() {
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Ok(r) => log::info!(
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"lightcraft: library {} in {:.0} ms ({} photos; snapshot seq {}, {} ops replayed)",
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if r.created { "created" } else { "loaded" },
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perf_now() - t,
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session.catalog.len(),
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r.snapshot_seq,
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r.replayed
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),
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Err(e) => {
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// never a silent demo session (issue #100): an empty one, and the window says why
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log::error!("opening the library failed: {e}");
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session = Session::new();
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originals.install(&mut session);
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problem = Some(lightcraft_ui_egui::panels::library_problem::LibraryProblem {
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can_retry: false,
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..lightcraft_ui_egui::panels::library_problem::LibraryProblem::new(
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"the browser's storage for this page",
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format!("{e}. Reload the page to try again."),
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)
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});
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}
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}
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// previews are large (≤ 2560 px, f32): keep few in a 32-bit address space
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session.media.preview_capacity = 3;
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let mut app = LightcraftApp::new(session, services(originals.clone(), backend.clone(), cc.egui_ctx.clone()));
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let ui_written = files.get("ui.json").unwrap_or_default();
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if let Ok(ui) = serde_json::from_slice::<UiState>(&ui_written) {
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app.ui = ui;
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}
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app.ui = app.ui.sanitized();
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app.library_problem = problem;
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let n = opts.workers.unwrap_or_else(|| {
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let cores = window().map_or(1, |w| w.navigator().hardware_concurrency() as usize);
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cores.saturating_sub(1).clamp(1, 4)
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});
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let workers =
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(n > 0).then(|| Workers::start(n, backend.as_ref().map_or("memory", |b| b.kind()), backend.clone(), index, cc.egui_ctx.clone()));
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if let Some(w) = &workers {
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app.renderer.set_offload(Box::new(w.clone()));
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}
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log::info!("lightcraft: {n} render workers");
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CTX.with(|c| *c.borrow_mut() = Some(cc.egui_ctx.clone()));
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let origin = lightcraft_ui_egui::now_ms() - perf_now();
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WebApp {
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app,
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originals,
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files,
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backend,
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workers,
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flushing: Rc::new(Cell::new(false)),
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bench: opts.bench.then(|| Bench::new(origin)),
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first_frame_logged: false,
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last_save: 0.0,
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ui_written,
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}
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}
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fn import_dropped(&mut self, ctx: &egui::Context) {
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let dropped = ctx.input(|i| i.raw.dropped_files.clone());
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for f in dropped {
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let (originals, backend, ctx) = (self.originals.clone(), self.backend.clone(), ctx.clone());
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wasm_bindgen_futures::spawn_local(async move {
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let name = f.path().to_string_lossy().to_string();
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match f.bytes_async().await {
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Ok(bytes) => store_file(originals, backend, name, bytes, ctx).await,
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Err(e) => log::warn!("reading dropped {name}: {e}"),
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}
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});
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}
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let paths = self.originals.take_pending();
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if !paths.is_empty() {
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let n = paths.len();
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match self.app.run("library.import", json!({"paths": paths})) {
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Ok(_) => self.app.toast(ctx, format!("Added {n} photo{}", if n == 1 { "" } else { "s" })),
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Err(e) => log::warn!("import: {e}"),
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}
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}
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}
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/// Load originals the main thread asked for (and the active photo's, ahead of time).
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fn load_originals(&mut self, ctx: &egui::Context) {
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if let Some(id) = self.app.session.selection.active
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&& let Some(Source::File { path }) = self.app.session.catalog.photo(id).map(|p| &p.source)
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&& !self.originals.contains(path)
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{
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self.originals.prefetch(path);
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}
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let Some(b) = &self.backend else { return };
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for hash in self.originals.take_wanted() {
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let (b, originals, ctx) = (b.clone(), self.originals.clone(), ctx.clone());
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wasm_bindgen_futures::spawn_local(async move {
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match b.read(&storage_key(&hash)).await {
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Ok(Some(bytes)) => {
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originals.insert(&hash, Arc::from(bytes));
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ctx.request_repaint();
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}
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Ok(None) => {
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log::warn!("original {hash} is not in browser storage");
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originals.load_failed(&hash);
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}
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Err(e) => {
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log::warn!("loading original {hash}: {e}");
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originals.load_failed(&hash);
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}
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}
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});
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}
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}
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/// Save view state, UI prefs and the thumbnail index now and then; flush dirty files.
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fn save(&mut self) {
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let now = perf_now();
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if now - self.last_save >= SAVE_EVERY_MS {
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self.last_save = now;
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self.app.session.save_view();
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if let Ok(ui) = serde_json::to_vec_pretty(&self.app.ui)
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&& ui != self.ui_written
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{
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self.files.write("ui.json", &ui);
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self.ui_written = ui;
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}
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if let (Some(w), Some(b)) = (&self.workers, &self.backend)
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&& let Some(index) = w.take_index_if_dirty()
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{
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let b = b.clone();
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wasm_bindgen_futures::spawn_local(async move {
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if let Err(e) = b.write(THUMB_INDEX, &index).await {
|
|
log::warn!("saving the thumbnail index: {e}");
|
|
}
|
|
});
|
|
}
|
|
}
|
|
if let Some(b) = &self.backend
|
|
&& self.files.is_dirty()
|
|
&& !self.flushing.get()
|
|
{
|
|
self.flushing.set(true);
|
|
wasm_bindgen_futures::spawn_local(flush(self.files.clone(), b.clone(), self.flushing.clone()));
|
|
}
|
|
}
|
|
}
|
|
|
|
type Reply = (js_sys::Function, js_sys::Function);
|
|
|
|
thread_local! {
|
|
/// Commands from JavaScript ([`command`]), run on the next frame.
|
|
static INBOX: std::cell::RefCell<Vec<(String, String, Reply)>> = const { std::cell::RefCell::new(Vec::new()) };
|
|
static CTX: std::cell::RefCell<Option<egui::Context>> = const { std::cell::RefCell::new(None) };
|
|
}
|
|
|
|
/// Run a command by id from JavaScript (automation, tests): `await command("library.info", "{}")`
|
|
/// resolves to the result as JSON text, or rejects with the error. Besides every engine/UI
|
|
/// command, `web.stats` reports the browser host's state (storage, workers, originals in memory).
|
|
#[wasm_bindgen]
|
|
pub fn command(id: String, params: String) -> js_sys::Promise {
|
|
js_sys::Promise::new(&mut |resolve, reject| {
|
|
INBOX.with(|q| q.borrow_mut().push((id.clone(), params.clone(), (resolve, reject))));
|
|
CTX.with(|c| c.borrow().as_ref().map(|c| c.request_repaint()));
|
|
})
|
|
}
|
|
|
|
impl WebApp {
|
|
fn web_stats(&self) -> serde_json::Value {
|
|
let (alive, ready, remote, inline) = self.workers.as_ref().map_or((0, 0, 0, 0), Workers::stats);
|
|
let (orig_n, orig_bytes) = self.originals.usage();
|
|
json!({
|
|
"storage": self.backend.as_ref().map_or("memory", |b| b.kind()),
|
|
"dirty": self.files.is_dirty(),
|
|
"flushing": self.flushing.get(),
|
|
"workers": {"alive": alive, "ready": ready, "remoteJobs": remote, "inlineJobs": inline},
|
|
"originalsInMemory": orig_n,
|
|
"originalBytesInMemory": orig_bytes,
|
|
"renderQueue": self.app.renderer.queued(),
|
|
"rendersInFlight": self.app.renderer.in_flight(),
|
|
"thumbTextures": self.app.renderer.thumb_textures(),
|
|
})
|
|
}
|
|
|
|
fn run_inbox(&mut self) {
|
|
let inbox = INBOX.with(|q| std::mem::take(&mut *q.borrow_mut()));
|
|
for (id, params, (resolve, reject)) in inbox {
|
|
let params: serde_json::Value = serde_json::from_str(¶ms).unwrap_or(json!({}));
|
|
let r = if id == "web.stats" { Ok(self.web_stats()) } else { self.app.run(&id, params) };
|
|
let _ = match r {
|
|
Ok(v) => resolve.call1(&JsValue::NULL, &v.to_string().into()),
|
|
Err(e) => reject.call1(&JsValue::NULL, &e.into()),
|
|
};
|
|
}
|
|
}
|
|
}
|
|
|
|
impl eframe::App for WebApp {
|
|
fn logic(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
|
|
self.run_inbox();
|
|
self.import_dropped(ctx);
|
|
self.load_originals(ctx);
|
|
self.app.logic(ctx);
|
|
self.save();
|
|
if let Some(b) = self.bench.as_mut()
|
|
&& let Some(report) = b.step(&mut self.app)
|
|
{
|
|
log::info!("lightcraft-bench {report}");
|
|
if let Some((alive, ready, remote, inline)) = self.workers.as_ref().map(Workers::stats) {
|
|
log::info!("lightcraft-workers {{\"alive\":{alive},\"ready\":{ready},\"remote_jobs\":{remote},\"inline_jobs\":{inline}}}");
|
|
}
|
|
set_status(&format!("bench: {report}"));
|
|
self.bench = None;
|
|
}
|
|
if self.bench.is_some() {
|
|
ctx.request_repaint();
|
|
}
|
|
}
|
|
|
|
fn raw_input_hook(&mut self, _ctx: &egui::Context, raw: &mut egui::RawInput) {
|
|
self.app.raw_input_hook(raw);
|
|
}
|
|
|
|
fn ui(&mut self, ui: &mut egui::Ui, _frame: &mut eframe::Frame) {
|
|
self.app.ui(ui);
|
|
if !self.first_frame_logged && !self.app.widgets.is_empty() {
|
|
self.first_frame_logged = true;
|
|
log::info!("lightcraft first UI frame at {:.0} ms after navigation start", perf_now());
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Start the app (called by `index.html` after instantiating the module).
|
|
#[wasm_bindgen]
|
|
pub fn start() {
|
|
eframe::WebLogger::init(log::LevelFilter::Info).ok();
|
|
log::info!("lightcraft: wasm instantiated at {:.0} ms", perf_now());
|
|
let opts = Options::from_url();
|
|
wasm_bindgen_futures::spawn_local(async move {
|
|
let Some(canvas) = window()
|
|
.and_then(|w| w.document())
|
|
.and_then(|d| d.get_element_by_id("lightcraft_canvas"))
|
|
.and_then(|e| e.dyn_into::<web_sys::HtmlCanvasElement>().ok())
|
|
else {
|
|
log::error!("missing <canvas id=\"lightcraft_canvas\">");
|
|
return;
|
|
};
|
|
let boot = boot(opts).await;
|
|
let runner = eframe::WebRunner::new();
|
|
let r = runner.start(canvas, eframe::WebOptions::default(), Box::new(move |cc| Ok(Box::new(WebApp::new(cc, boot))))).await;
|
|
match r {
|
|
Ok(()) => {
|
|
if let Some(el) = window().and_then(|w| w.document()).and_then(|d| d.get_element_by_id("lightcraft_loading")) {
|
|
el.remove();
|
|
}
|
|
}
|
|
Err(e) => {
|
|
log::error!("LightCraft failed to start: {e:?}");
|
|
set_status(&format!("LightCraft failed to start: {e:?}"));
|
|
}
|
|
}
|
|
});
|
|
}
|