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2025-08-23 18:21:10 +00:00
parent a8b702b833
commit eb16ce37d1
1 changed files with 115 additions and 219 deletions
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306
docs/sw.js
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@@ -1,56 +1,53 @@
const LF_CDN = "https://cdn.jsdelivr.net/npm/localforage@1.10.0/dist/localforage.min.js";
const THREADS_KEY = "threads_v1";
const TARGET_SUBSTRING = "openrouter.ai/api/v1/chat/completions"; const TARGET_SUBSTRING = "openrouter.ai/api/v1/chat/completions";
const THREADS_KEY = "threads_v1";
const SAVE_BYTES_THRESHOLD = 6 * 1024; const SAVE_BYTES_THRESHOLD = 6 * 1024;
const SAVE_TIME_THRESHOLD = 800; const SAVE_TIME_THRESHOLD = 800;
const BROADCAST_THROTTLE_MS = 600; const BROADCAST_THROTTLE_MS = 600;
const DB_NAME = "localforage";
const STORE_NAME = "keyvaluepairs";
const gid = () => Math.random().toString(36).slice(2, 9) + "-" + Date.now().toString(36); const gid = () => Math.random().toString(36).slice(2, 9) + "-" + Date.now().toString(36);
const now = () => Date.now(); const now = () => Date.now();
let localforageAvailable = false; function openLFDB() {
let lfLoadError = null; return new Promise((resolve, reject) => {
try { const req = indexedDB.open(DB_NAME);
importScripts(LF_CDN); req.onsuccess = (e) => resolve(e.target.result);
if (self.localforage) { req.onerror = (e) => reject(e.target.error || new Error("open error"));
localforageAvailable = true; });
try {
localforage.config({ name: "sw-localforage" });
} catch (e) {
}
} else {
lfLoadError = "localforage not present after importScripts";
}
} catch (e) {
lfLoadError = String(e && e.message ? e.message : e);
} }
const state = { async function idbGetRaw(key) {
totalIntercepted: 0, const db = await openLFDB();
activeStreams: {}, const tx = db.transaction(STORE_NAME, "readonly");
// streamId -> meta const store = tx.objectStore(STORE_NAME);
lastStreamSummary: null, return await new Promise((res, rej) => {
debugWrites: [] const r = store.get(key);
// ids of test threads written by SW r.onsuccess = (ev) => res(ev.target.result);
}; r.onerror = (ev) => rej(ev.target.error || new Error("get error"));
async function safeReadThreads() { });
if (!localforageAvailable) throw new Error("localforage not available: " + lfLoadError);
try {
const v = await localforage.getItem(THREADS_KEY);
return Array.isArray(v) ? v : [];
} catch (err) {
throw err;
}
} }
async function safeWriteThreads(arr) { async function idbPutRaw(key, value) {
if (!localforageAvailable) throw new Error("localforage not available: " + lfLoadError); const db = await openLFDB();
try { const tx = db.transaction(STORE_NAME, "readwrite");
await localforage.setItem(THREADS_KEY, arr); const store = tx.objectStore(STORE_NAME);
} catch (err) { return await new Promise((res, rej) => {
const r = store.put({ key, value });
r.onsuccess = () => res(true);
r.onerror = (ev) => rej(ev.target.error || new Error("put error"));
});
}
async function idbGetThreads() {
const rec = await idbGetRaw(THREADS_KEY).catch((err) => {
throw err; throw err;
} });
if (!rec) return [];
return Array.isArray(rec.value) ? rec.value : [];
}
async function idbWriteThreads(arr) {
await idbPutRaw(THREADS_KEY, arr);
} }
function pickLastThread(threads) { function pickLastThread(threads) {
if (!threads || threads.length === 0) return null; if (!threads || threads.length === 0) return null;
const copy = [...threads].sort((a, b) => (b.updatedAt || 0) - (a.updatedAt || 0)); const sorted = [...threads].sort((a, b) => (b.updatedAt || 0) - (a.updatedAt || 0));
return copy[0] || null; return sorted[0];
} }
function upsertAssistantInThreadObj(threadObj, streamId, text) { function upsertAssistantInThreadObj(threadObj, streamId, text) {
threadObj.updatedAt = now(); threadObj.updatedAt = now();
@@ -79,28 +76,32 @@ function upsertAssistantInThreadObj(threadObj, streamId, text) {
threadObj.messages.push(msg); threadObj.messages.push(msg);
return threadObj; return threadObj;
} }
async function safeFlushLastThread(streamId, accumulated, meta = {}) {
const threads = await idbGetThreads();
let thread = pickLastThread(threads);
const ts = now();
if (!thread) {
thread = { id: "sw-thread-" + gid(), title: "Missed while backgrounded", pinned: false, updatedAt: ts, messages: [] };
threads.unshift(thread);
}
upsertAssistantInThreadObj(thread, streamId, accumulated);
await idbWriteThreads(threads);
return { ok: true, threadId: thread.id };
}
async function broadcast(msg) { async function broadcast(msg) {
try { try {
const cl = await self.clients.matchAll({ includeUncontrolled: true, type: "window" }); const cl = await self.clients.matchAll({ includeUncontrolled: true, type: "window" });
for (const c of cl) { for (const c of cl) {
try { try {
c.postMessage(msg); c.postMessage(msg);
} catch (e) { } catch (_) {
} }
} }
} catch (e) { } catch (_) {
} }
} }
function logDebug(text) { self.addEventListener("install", (ev) => self.skipWaiting());
console.log("[sw-debug]", text); self.addEventListener("activate", (ev) => ev.waitUntil(self.clients.claim()));
broadcast({ type: "sw-debug-log", ts: now(), text: String(text) });
}
self.addEventListener("install", (ev) => {
self.skipWaiting();
});
self.addEventListener("activate", (ev) => {
ev.waitUntil(self.clients.claim());
});
self.addEventListener("fetch", (event) => { self.addEventListener("fetch", (event) => {
try { try {
const url = String(event.request.url || ""); const url = String(event.request.url || "");
@@ -110,239 +111,134 @@ self.addEventListener("fetch", (event) => {
if (!upstream || !upstream.body) return upstream; if (!upstream || !upstream.body) return upstream;
const streamId = "sw-" + gid(); const streamId = "sw-" + gid();
const meta = { url, startedAt: now(), bytes: 0, status: "started" }; const meta = { url, startedAt: now(), bytes: 0, status: "started" };
state.totalIntercepted = (state.totalIntercepted || 0) + 1;
state.activeStreams[streamId] = meta;
broadcast({ type: "sw-intercept-start", streamId, meta }); broadcast({ type: "sw-intercept-start", streamId, meta });
const [clientStream, swStream] = upstream.body.tee(); const [clientStream, swStream] = upstream.body.tee();
const savePromise = (async () => { const savePromise = (async () => {
const reader = swStream.getReader(); const reader = swStream.getReader();
const decoder = new TextDecoder("utf-8"); const decoder = new TextDecoder("utf-8");
let accumulated = ""; let accumulated = "";
let sinceLastSaveBytes = 0; let sinceSaveBytes = 0;
let lastSaveAt = 0; let lastSaveAt = 0;
let lastBroadcastAt = 0; let lastBroadcastAt = 0;
async function flushToLastThread(force = false) { async function maybeFlush(force = false) {
try { try {
const nowMs = now(); const nowMs = now();
if (!force && sinceLastSaveBytes < SAVE_BYTES_THRESHOLD && nowMs - lastSaveAt < SAVE_TIME_THRESHOLD) return; if (!force && sinceSaveBytes < SAVE_BYTES_THRESHOLD && nowMs - lastSaveAt < SAVE_TIME_THRESHOLD) return;
if (!localforageAvailable) { await safeFlushLastThread(streamId, accumulated, { bytes: meta.bytes });
logDebug("flushToLastThread: localforage not available: " + lfLoadError); sinceSaveBytes = 0;
return;
}
const threads = await safeReadThreads();
let thread = pickLastThread(threads);
if (!thread) {
thread = { id: "sw-thread-" + gid(), title: "Missed while backgrounded", pinned: false, updatedAt: nowMs, messages: [] };
threads.unshift(thread);
logDebug("flush: created fallback thread " + thread.id);
}
upsertAssistantInThreadObj(thread, streamId, accumulated);
await safeWriteThreads(threads);
sinceLastSaveBytes = 0;
lastSaveAt = nowMs; lastSaveAt = nowMs;
const now2 = Date.now(); if (nowMs - lastBroadcastAt > BROADCAST_THROTTLE_MS) {
if (now2 - lastBroadcastAt > BROADCAST_THROTTLE_MS) { lastBroadcastAt = nowMs;
lastBroadcastAt = now2;
broadcast({ type: "sw-intercept-progress", streamId, meta: { bytes: meta.bytes, savedAt: lastSaveAt, snippet: accumulated.slice(-1024) } }); broadcast({ type: "sw-intercept-progress", streamId, meta: { bytes: meta.bytes, savedAt: lastSaveAt, snippet: accumulated.slice(-1024) } });
} }
} catch (err) { } catch (err) {
logDebug("flushToLastThread error: " + (err && err.message ? err.message : String(err))); broadcast({ type: "sw-intercept-error", streamId, meta: { error: String(err && err.message ? err.message : err) } });
} }
} }
try { try {
while (true) { while (true) {
const { value, done } = await reader.read(); const { value, done } = await reader.read();
if (done) break; if (done) break;
let chunkText = ""; let chunk = "";
try { try {
chunkText = decoder.decode(value, { stream: true }); chunk = decoder.decode(value, { stream: true });
} catch (e) { } catch (e) {
try { chunk = "";
chunkText = String(value);
} catch (_) {
chunkText = "";
} }
} accumulated += chunk;
accumulated += chunkText; const bytes = value ? value.byteLength || 0 : chunk.length;
const bytes = value ? value.byteLength || 0 : chunkText.length;
meta.bytes += bytes; meta.bytes += bytes;
meta.lastProgressAt = now(); sinceSaveBytes += bytes;
sinceLastSaveBytes += bytes; await maybeFlush(false);
await flushToLastThread(false);
} }
await flushToLastThread(true); await maybeFlush(true);
meta.status = "finished"; meta.status = "finished";
meta.endedAt = now(); meta.endedAt = now();
state.lastStreamSummary = { streamId, url: meta.url, startedAt: meta.startedAt, endedAt: meta.endedAt, totalBytes: meta.bytes };
delete state.activeStreams[streamId];
broadcast({ type: "sw-intercept-end", streamId, meta: { totalBytes: meta.bytes, endedAt: meta.endedAt } }); broadcast({ type: "sw-intercept-end", streamId, meta: { totalBytes: meta.bytes, endedAt: meta.endedAt } });
} catch (err) { } catch (err) {
meta.status = "error"; meta.status = "error";
meta.error = String(err && err.message ? err.message : err); meta.error = String(err && err.message ? err.message : err);
delete state.activeStreams[streamId];
broadcast({ type: "sw-intercept-error", streamId, meta: { error: meta.error } }); broadcast({ type: "sw-intercept-error", streamId, meta: { error: meta.error } });
logDebug("savePromise error: " + meta.error);
} }
})(); })();
event.waitUntil(savePromise); event.waitUntil(savePromise);
return new Response(clientStream, { return new Response(clientStream, { status: upstream.status, statusText: upstream.statusText, headers: upstream.headers });
status: upstream.status,
statusText: upstream.statusText,
headers: upstream.headers
});
})()); })());
} catch (err) { } catch (err) {
logDebug("fetch handler error: " + (err && err.message ? err.message : String(err))); broadcast({ type: "sw-debug", text: "fetch handler error: " + String(err && err.message ? err.message : err) });
} }
}); });
self.addEventListener("message", (event) => { self.addEventListener("message", (event) => {
const data = event.data || {}; const data = event.data || {};
(async () => {
try { try {
if (data && data.type === "PING") { if (data.type === "PING") {
if (event.ports && event.ports[0]) { if (event.ports && event.ports[0]) event.ports[0].postMessage({ type: "PONG", ts: now(), ok: true });
event.ports[0].postMessage({ type: "PONG", ts: now(), ok: true }); else broadcast({ type: "PONG", ts: now(), ok: true });
} else if (event.source && typeof event.source.postMessage === "function") {
try {
event.source.postMessage({ type: "PONG", ts: now(), ok: true });
} catch (e) {
}
} else {
broadcast({ type: "PONG", ts: now(), ok: true });
}
return; return;
} }
if (data && data.type === "PING_STATUS") { if (data.type === "PING_STATUS") {
const reply = { const reply = { type: "PONG_STATUS", ts: now() };
type: "PONG_STATUS",
ts: now(),
totalIntercepted: state.totalIntercepted || 0,
activeStreams: Object.entries(state.activeStreams).map(([id, m]) => ({ streamId: id, url: m.url, bytes: m.bytes, status: m.status, startedAt: m.startedAt })),
lastStreamSummary: state.lastStreamSummary || null,
lfAvailable: localforageAvailable,
lfLoadError
};
if (event.ports && event.ports[0]) event.ports[0].postMessage(reply); if (event.ports && event.ports[0]) event.ports[0].postMessage(reply);
else if (event.source && event.source.postMessage) event.source.postMessage(reply);
else broadcast(reply); else broadcast(reply);
return; return;
} }
if (data && data.type === "TEST_WRITE") { if (data.type === "TEST_WRITE") {
(async () => {
if (!localforageAvailable) {
const res = { type: "TEST_WRITE_RESULT", ok: false, error: "localforage not available: " + lfLoadError };
if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
else event.source && event.source.postMessage ? event.source.postMessage(res) : broadcast(res);
return;
}
try { try {
const threads = await safeReadThreads(); const threads = await idbGetThreads();
const tid = "sw-test-" + gid(); const tid = "sw-test-" + gid();
const nowMs = now(); const nowMs = now();
const testThread = { const testThread = { id: tid, title: "SW test " + new Date(nowMs).toISOString(), pinned: false, updatedAt: nowMs, messages: [{ id: "swtest-" + gid(), role: "assistant", content: "sw test write @" + new Date(nowMs).toISOString(), contentParts: [{ type: "text", text: "sw test write" }], createdAt: nowMs, updatedAt: nowMs }] };
id: tid,
title: "SW test thread " + nowMs,
pinned: false,
updatedAt: nowMs,
messages: [
{ 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 }
]
};
threads.unshift(testThread); threads.unshift(testThread);
await safeWriteThreads(threads); await idbWriteThreads(threads);
state.debugWrites = (state.debugWrites || []).concat(tid); const res = { type: "TEST_WRITE_RESULT", ok: true, tid };
const res = { type: "TEST_WRITE_RESULT", ok: true, tid, now: nowMs };
if (event.ports && event.ports[0]) event.ports[0].postMessage(res); if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
else event.source && event.source.postMessage ? event.source.postMessage(res) : broadcast(res); else broadcast(res);
logDebug("TEST_WRITE created " + tid);
} catch (err) { } catch (err) {
const res = { type: "TEST_WRITE_RESULT", ok: false, error: String(err && err.message ? err.message : err) }; const res = { type: "TEST_WRITE_RESULT", ok: false, error: String(err && err.message ? err.message : err) };
if (event.ports && event.ports[0]) event.ports[0].postMessage(res); if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
else event.source && event.source.postMessage ? event.source.postMessage(res) : broadcast(res); else broadcast(res);
logDebug("TEST_WRITE error: " + res.error);
} }
})();
return;
}
if (data && data.type === "CHECK_LF") {
(async () => {
if (!localforageAvailable) {
const res = { type: "CHECK_LF_RESULT", ok: false, error: "localforage not available: " + lfLoadError };
if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
else event.source && event.source.postMessage ? event.source.postMessage(res) : broadcast(res);
return; return;
} }
if (data.type === "READ_KEY") {
const key = data.key || THREADS_KEY;
try { try {
const threads = await safeReadThreads(); const rec = await idbGetRaw(key);
const res = { type: "CHECK_LF_RESULT", ok: true, threadsCount: Array.isArray(threads) ? threads.length : 0, sample: threads && threads[0] ? threads[0] : null }; const val = rec ? rec.value : null;
const res = { type: "READ_KEY_RESULT", ok: true, key, value: val };
if (event.ports && event.ports[0]) event.ports[0].postMessage(res); if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
else event.source && event.source.postMessage ? event.source.postMessage(res) : broadcast(res); else broadcast(res);
logDebug("CHECK_LF returned " + (Array.isArray(threads) ? threads.length : "?") + " threads");
} catch (err) { } catch (err) {
const res = { type: "CHECK_LF_RESULT", ok: false, error: String(err && err.message ? err.message : err) }; const res = { type: "READ_KEY_RESULT", ok: false, key, error: String(err && err.message ? err.message : err) };
if (event.ports && event.ports[0]) event.ports[0].postMessage(res); if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
else event.source && event.source.postMessage ? event.source.postMessage(res) : broadcast(res); else broadcast(res);
logDebug("CHECK_LF error: " + res.error);
} }
})();
return;
}
if (data && data.type === "LIST_SW_SAVED") {
(async () => {
if (!localforageAvailable) {
const res = { type: "LIST_SW_SAVED_RESULT", ok: false, error: "localforage not available: " + lfLoadError };
if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
else event.source && event.source.postMessage ? event.source.postMessage(res) : broadcast(res);
return; return;
} }
if (data.type === "LIST_SW_SAVED") {
try { try {
const threads = await safeReadThreads(); const threads = await idbGetThreads();
const found = []; const found = [];
for (const t of threads || []) { for (const t of threads || []) {
for (const m of t.messages || []) { for (const m of t.messages || []) {
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 }); if (m && m.sw_streamId) found.push({ threadId: t.id, messageId: m.id, sw_streamId: m.sw_streamId, snippet: (m.content || "").slice(0, 200) });
} }
} }
const res = { type: "LIST_SW_SAVED_RESULT", ok: true, found }; const res = { type: "LIST_SW_SAVED_RESULT", ok: true, found };
if (event.ports && event.ports[0]) event.ports[0].postMessage(res); if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
else event.source && event.source.postMessage ? event.source.postMessage(res) : broadcast(res); else broadcast(res);
logDebug("LIST_SW_SAVED returned " + found.length + " messages");
} catch (err) { } catch (err) {
const res = { type: "LIST_SW_SAVED_RESULT", ok: false, error: String(err && err.message ? err.message : err) }; const res = { type: "LIST_SW_SAVED_RESULT", ok: false, error: String(err && err.message ? err.message : err) };
if (event.ports && event.ports[0]) event.ports[0].postMessage(res); if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
else event.source && event.source.postMessage ? event.source.postMessage(res) : broadcast(res);
logDebug("LIST_SW_SAVED error: " + res.error);
}
})();
return;
}
if (data && data.type === "CLEAR_TESTS") {
(async () => {
if (!localforageAvailable) {
const res = { type: "CLEAR_TESTS_RESULT", ok: false, error: "localforage not available: " + lfLoadError };
if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
else broadcast(res);
return;
}
try {
const threads = await safeReadThreads();
const before = threads.length;
const cleaned = threads.filter((t) => !(t.id && (String(t.id).startsWith("sw-test-") || String(t.id).startsWith("sw-thread-") || state.debugWrites.includes(t.id))));
await safeWriteThreads(cleaned);
const removed = before - cleaned.length;
state.debugWrites = [];
const res = { type: "CLEAR_TESTS_RESULT", ok: true, removed };
if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
else broadcast(res);
logDebug("CLEAR_TESTS removed " + removed);
} catch (err) {
const res = { type: "CLEAR_TESTS_RESULT", ok: false, error: String(err && err.message ? err.message : err) };
if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
else broadcast(res); else broadcast(res);
} }
})();
return; return;
} }
} catch (err) { } catch (err) {
logDebug("message handler error: " + (err && err.message ? err.message : String(err))); const r = { type: "SW_ERROR", error: String(err && err.message ? err.message : err) };
if (event.ports && event.ports[0]) event.ports[0].postMessage(r);
else broadcast(r);
} }
})();
}); });