mirror of
https://github.com/multipleof4/sune.git
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349 lines
14 KiB
JavaScript
349 lines
14 KiB
JavaScript
const LF_CDN = "https://cdn.jsdelivr.net/npm/localforage@1.10.0/dist/localforage.min.js";
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const THREADS_KEY = "threads_v1";
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const TARGET_SUBSTRING = "openrouter.ai/api/v1/chat/completions";
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const SAVE_BYTES_THRESHOLD = 6 * 1024;
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const SAVE_TIME_THRESHOLD = 800;
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const BROADCAST_THROTTLE_MS = 600;
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const gid = () => Math.random().toString(36).slice(2, 9) + "-" + Date.now().toString(36);
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const now = () => Date.now();
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let localforageAvailable = false;
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let lfLoadError = null;
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try {
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importScripts(LF_CDN);
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if (self.localforage) {
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localforageAvailable = true;
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try {
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localforage.config({ name: "sw-localforage" });
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} catch (e) {
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}
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} else {
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lfLoadError = "localforage not present after importScripts";
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}
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} catch (e) {
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lfLoadError = String(e && e.message ? e.message : e);
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}
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const state = {
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totalIntercepted: 0,
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activeStreams: {},
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// streamId -> meta
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lastStreamSummary: null,
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debugWrites: []
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// ids of test threads written by SW
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};
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async function safeReadThreads() {
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if (!localforageAvailable) throw new Error("localforage not available: " + lfLoadError);
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try {
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const v = await localforage.getItem(THREADS_KEY);
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return Array.isArray(v) ? v : [];
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} catch (err) {
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throw err;
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}
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}
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async function safeWriteThreads(arr) {
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if (!localforageAvailable) throw new Error("localforage not available: " + lfLoadError);
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try {
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await localforage.setItem(THREADS_KEY, arr);
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} catch (err) {
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throw err;
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}
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}
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function pickLastThread(threads) {
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if (!threads || threads.length === 0) return null;
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const copy = [...threads].sort((a, b) => (b.updatedAt || 0) - (a.updatedAt || 0));
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return copy[0] || null;
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}
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function upsertAssistantInThreadObj(threadObj, streamId, text) {
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threadObj.updatedAt = now();
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for (let i = threadObj.messages.length - 1; i >= 0; i--) {
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const m = threadObj.messages[i];
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if (m && m.sw_streamId === streamId) {
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m.content = text;
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m.contentParts = [{ type: "text", text }];
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m.updatedAt = now();
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m._sw_savedAt = now();
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return threadObj;
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}
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}
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const msg = {
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id: "swmsg-" + gid(),
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role: "assistant",
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content: text,
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contentParts: [{ type: "text", text }],
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kind: "assistant",
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sw_saved: true,
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sw_streamId: streamId,
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createdAt: now(),
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updatedAt: now(),
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_sw_savedAt: now()
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};
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threadObj.messages.push(msg);
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return threadObj;
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}
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async function broadcast(msg) {
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try {
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const cl = await self.clients.matchAll({ includeUncontrolled: true, type: "window" });
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for (const c of cl) {
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try {
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c.postMessage(msg);
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} catch (e) {
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}
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}
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} catch (e) {
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}
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}
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function logDebug(text) {
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console.log("[sw-debug]", text);
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broadcast({ type: "sw-debug-log", ts: now(), text: String(text) });
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}
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self.addEventListener("install", (ev) => {
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self.skipWaiting();
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});
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self.addEventListener("activate", (ev) => {
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ev.waitUntil(self.clients.claim());
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});
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self.addEventListener("fetch", (event) => {
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try {
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const url = String(event.request.url || "");
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if (!url.includes(TARGET_SUBSTRING)) return;
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event.respondWith((async () => {
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const upstream = await fetch(event.request);
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if (!upstream || !upstream.body) return upstream;
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const streamId = "sw-" + gid();
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const meta = { url, startedAt: now(), bytes: 0, status: "started" };
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state.totalIntercepted = (state.totalIntercepted || 0) + 1;
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state.activeStreams[streamId] = meta;
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broadcast({ type: "sw-intercept-start", streamId, meta });
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const [clientStream, swStream] = upstream.body.tee();
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const savePromise = (async () => {
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const reader = swStream.getReader();
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const decoder = new TextDecoder("utf-8");
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let accumulated = "";
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let sinceLastSaveBytes = 0;
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let lastSaveAt = 0;
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let lastBroadcastAt = 0;
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async function flushToLastThread(force = false) {
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try {
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const nowMs = now();
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if (!force && sinceLastSaveBytes < SAVE_BYTES_THRESHOLD && nowMs - lastSaveAt < SAVE_TIME_THRESHOLD) return;
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if (!localforageAvailable) {
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logDebug("flushToLastThread: localforage not available: " + lfLoadError);
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return;
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}
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const threads = await safeReadThreads();
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let thread = pickLastThread(threads);
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if (!thread) {
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thread = { id: "sw-thread-" + gid(), title: "Missed while backgrounded", pinned: false, updatedAt: nowMs, messages: [] };
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threads.unshift(thread);
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logDebug("flush: created fallback thread " + thread.id);
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}
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upsertAssistantInThreadObj(thread, streamId, accumulated);
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await safeWriteThreads(threads);
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sinceLastSaveBytes = 0;
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lastSaveAt = nowMs;
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const now2 = Date.now();
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if (now2 - lastBroadcastAt > BROADCAST_THROTTLE_MS) {
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lastBroadcastAt = now2;
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broadcast({ type: "sw-intercept-progress", streamId, meta: { bytes: meta.bytes, savedAt: lastSaveAt, snippet: accumulated.slice(-1024) } });
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}
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} catch (err) {
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logDebug("flushToLastThread error: " + (err && err.message ? err.message : String(err)));
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}
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}
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try {
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while (true) {
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const { value, done } = await reader.read();
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if (done) break;
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let chunkText = "";
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try {
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chunkText = decoder.decode(value, { stream: true });
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} catch (e) {
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try {
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chunkText = String(value);
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} catch (_) {
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chunkText = "";
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}
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}
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accumulated += chunkText;
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const bytes = value ? value.byteLength || 0 : chunkText.length;
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meta.bytes += bytes;
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meta.lastProgressAt = now();
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sinceLastSaveBytes += bytes;
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await flushToLastThread(false);
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}
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await flushToLastThread(true);
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meta.status = "finished";
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meta.endedAt = now();
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state.lastStreamSummary = { streamId, url: meta.url, startedAt: meta.startedAt, endedAt: meta.endedAt, totalBytes: meta.bytes };
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delete state.activeStreams[streamId];
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broadcast({ type: "sw-intercept-end", streamId, meta: { totalBytes: meta.bytes, endedAt: meta.endedAt } });
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} catch (err) {
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meta.status = "error";
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meta.error = String(err && err.message ? err.message : err);
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delete state.activeStreams[streamId];
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broadcast({ type: "sw-intercept-error", streamId, meta: { error: meta.error } });
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logDebug("savePromise error: " + meta.error);
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}
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})();
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event.waitUntil(savePromise);
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return new Response(clientStream, {
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status: upstream.status,
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statusText: upstream.statusText,
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headers: upstream.headers
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});
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})());
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} catch (err) {
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logDebug("fetch handler error: " + (err && err.message ? err.message : String(err)));
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}
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});
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self.addEventListener("message", (event) => {
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const data = event.data || {};
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try {
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if (data && data.type === "PING") {
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if (event.ports && event.ports[0]) {
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event.ports[0].postMessage({ type: "PONG", ts: now(), ok: true });
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} else if (event.source && typeof event.source.postMessage === "function") {
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try {
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event.source.postMessage({ type: "PONG", ts: now(), ok: true });
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} catch (e) {
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}
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} else {
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broadcast({ type: "PONG", ts: now(), ok: true });
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}
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return;
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}
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if (data && data.type === "PING_STATUS") {
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const reply = {
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type: "PONG_STATUS",
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ts: now(),
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totalIntercepted: state.totalIntercepted || 0,
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activeStreams: Object.entries(state.activeStreams).map(([id, m]) => ({ streamId: id, url: m.url, bytes: m.bytes, status: m.status, startedAt: m.startedAt })),
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lastStreamSummary: state.lastStreamSummary || null,
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lfAvailable: localforageAvailable,
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lfLoadError
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};
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if (event.ports && event.ports[0]) event.ports[0].postMessage(reply);
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else if (event.source && event.source.postMessage) event.source.postMessage(reply);
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else broadcast(reply);
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return;
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}
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if (data && data.type === "TEST_WRITE") {
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(async () => {
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if (!localforageAvailable) {
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const res = { type: "TEST_WRITE_RESULT", ok: false, error: "localforage not available: " + lfLoadError };
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if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
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else event.source && event.source.postMessage ? event.source.postMessage(res) : broadcast(res);
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return;
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}
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try {
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const threads = await safeReadThreads();
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const tid = "sw-test-" + gid();
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const nowMs = now();
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const testThread = {
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id: tid,
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title: "SW test thread " + nowMs,
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pinned: false,
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updatedAt: nowMs,
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messages: [
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{ id: "swtestmsg-" + gid(), role: "assistant", content: "sw test write @" + new Date(nowMs).toISOString(), contentParts: [{ type: "text", text: "sw test write @" + new Date(nowMs).toISOString() }], createdAt: nowMs, updatedAt: nowMs }
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]
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};
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threads.unshift(testThread);
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await safeWriteThreads(threads);
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state.debugWrites = (state.debugWrites || []).concat(tid);
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const res = { type: "TEST_WRITE_RESULT", ok: true, tid, now: nowMs };
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if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
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else event.source && event.source.postMessage ? event.source.postMessage(res) : broadcast(res);
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logDebug("TEST_WRITE created " + tid);
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} catch (err) {
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const res = { type: "TEST_WRITE_RESULT", ok: false, error: String(err && err.message ? err.message : err) };
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if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
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else event.source && event.source.postMessage ? event.source.postMessage(res) : broadcast(res);
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logDebug("TEST_WRITE error: " + res.error);
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}
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})();
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return;
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}
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if (data && data.type === "CHECK_LF") {
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(async () => {
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if (!localforageAvailable) {
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const res = { type: "CHECK_LF_RESULT", ok: false, error: "localforage not available: " + lfLoadError };
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if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
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else event.source && event.source.postMessage ? event.source.postMessage(res) : broadcast(res);
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return;
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}
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try {
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const threads = await safeReadThreads();
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const res = { type: "CHECK_LF_RESULT", ok: true, threadsCount: Array.isArray(threads) ? threads.length : 0, sample: threads && threads[0] ? threads[0] : null };
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if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
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else event.source && event.source.postMessage ? event.source.postMessage(res) : broadcast(res);
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logDebug("CHECK_LF returned " + (Array.isArray(threads) ? threads.length : "?") + " threads");
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} catch (err) {
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const res = { type: "CHECK_LF_RESULT", ok: false, error: String(err && err.message ? err.message : err) };
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if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
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else event.source && event.source.postMessage ? event.source.postMessage(res) : broadcast(res);
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logDebug("CHECK_LF error: " + res.error);
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}
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})();
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return;
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}
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if (data && data.type === "LIST_SW_SAVED") {
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(async () => {
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if (!localforageAvailable) {
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const res = { type: "LIST_SW_SAVED_RESULT", ok: false, error: "localforage not available: " + lfLoadError };
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if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
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else event.source && event.source.postMessage ? event.source.postMessage(res) : broadcast(res);
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return;
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}
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try {
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const threads = await safeReadThreads();
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const found = [];
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for (const t of threads || []) {
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for (const m of t.messages || []) {
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if (m && m.sw_streamId) found.push({ threadId: t.id, threadTitle: t.title, messageId: m.id, sw_streamId: m.sw_streamId, snippet: (m.content || "").slice(0, 200), updatedAt: m.updatedAt });
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}
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}
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const res = { type: "LIST_SW_SAVED_RESULT", ok: true, found };
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if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
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else event.source && event.source.postMessage ? event.source.postMessage(res) : broadcast(res);
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logDebug("LIST_SW_SAVED returned " + found.length + " messages");
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} catch (err) {
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const res = { type: "LIST_SW_SAVED_RESULT", ok: false, error: String(err && err.message ? err.message : err) };
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if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
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else event.source && event.source.postMessage ? event.source.postMessage(res) : broadcast(res);
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logDebug("LIST_SW_SAVED error: " + res.error);
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}
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})();
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return;
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}
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if (data && data.type === "CLEAR_TESTS") {
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(async () => {
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if (!localforageAvailable) {
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const res = { type: "CLEAR_TESTS_RESULT", ok: false, error: "localforage not available: " + lfLoadError };
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if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
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else broadcast(res);
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return;
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}
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try {
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const threads = await safeReadThreads();
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const before = threads.length;
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const cleaned = threads.filter((t) => !(t.id && (String(t.id).startsWith("sw-test-") || String(t.id).startsWith("sw-thread-") || state.debugWrites.includes(t.id))));
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await safeWriteThreads(cleaned);
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const removed = before - cleaned.length;
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state.debugWrites = [];
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const res = { type: "CLEAR_TESTS_RESULT", ok: true, removed };
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if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
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else broadcast(res);
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logDebug("CLEAR_TESTS removed " + removed);
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} catch (err) {
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const res = { type: "CLEAR_TESTS_RESULT", ok: false, error: String(err && err.message ? err.message : err) };
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if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
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else broadcast(res);
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}
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})();
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return;
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}
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} catch (err) {
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logDebug("message handler error: " + (err && err.message ? err.message : String(err)));
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}
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});
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