mirror of
https://github.com/multipleof4/sune.git
synced 2026-01-14 08:38:00 +00:00
245 lines
9.5 KiB
JavaScript
245 lines
9.5 KiB
JavaScript
const TARGET_SUBSTRING = "openrouter.ai/api/v1/chat/completions";
|
|
const THREADS_KEY = "threads_v1";
|
|
const SAVE_BYTES_THRESHOLD = 6 * 1024;
|
|
const SAVE_TIME_THRESHOLD = 800;
|
|
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 now = () => Date.now();
|
|
function openLFDB() {
|
|
return new Promise((resolve, reject) => {
|
|
const req = indexedDB.open(DB_NAME);
|
|
req.onsuccess = (e) => resolve(e.target.result);
|
|
req.onerror = (e) => reject(e.target.error || new Error("open error"));
|
|
});
|
|
}
|
|
async function idbGetRaw(key) {
|
|
const db = await openLFDB();
|
|
const tx = db.transaction(STORE_NAME, "readonly");
|
|
const store = tx.objectStore(STORE_NAME);
|
|
return await new Promise((res, rej) => {
|
|
const r = store.get(key);
|
|
r.onsuccess = (ev) => res(ev.target.result);
|
|
r.onerror = (ev) => rej(ev.target.error || new Error("get error"));
|
|
});
|
|
}
|
|
async function idbPutRaw(key, value) {
|
|
const db = await openLFDB();
|
|
const tx = db.transaction(STORE_NAME, "readwrite");
|
|
const store = tx.objectStore(STORE_NAME);
|
|
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;
|
|
});
|
|
if (!rec) return [];
|
|
return Array.isArray(rec.value) ? rec.value : [];
|
|
}
|
|
async function idbWriteThreads(arr) {
|
|
await idbPutRaw(THREADS_KEY, arr);
|
|
}
|
|
function pickLastThread(threads) {
|
|
if (!threads || threads.length === 0) return null;
|
|
const sorted = [...threads].sort((a, b) => (b.updatedAt || 0) - (a.updatedAt || 0));
|
|
return sorted[0];
|
|
}
|
|
function upsertAssistantInThreadObj(threadObj, streamId, text) {
|
|
threadObj.updatedAt = now();
|
|
for (let i = threadObj.messages.length - 1; i >= 0; i--) {
|
|
const m = threadObj.messages[i];
|
|
if (m && m.sw_streamId === streamId) {
|
|
m.content = text;
|
|
m.contentParts = [{ type: "text", text }];
|
|
m.updatedAt = now();
|
|
m._sw_savedAt = now();
|
|
return threadObj;
|
|
}
|
|
}
|
|
const msg = {
|
|
id: "swmsg-" + gid(),
|
|
role: "assistant",
|
|
content: text,
|
|
contentParts: [{ type: "text", text }],
|
|
kind: "assistant",
|
|
sw_saved: true,
|
|
sw_streamId: streamId,
|
|
createdAt: now(),
|
|
updatedAt: now(),
|
|
_sw_savedAt: now()
|
|
};
|
|
threadObj.messages.push(msg);
|
|
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) {
|
|
try {
|
|
const cl = await self.clients.matchAll({ includeUncontrolled: true, type: "window" });
|
|
for (const c of cl) {
|
|
try {
|
|
c.postMessage(msg);
|
|
} catch (_) {
|
|
}
|
|
}
|
|
} catch (_) {
|
|
}
|
|
}
|
|
self.addEventListener("install", (ev) => self.skipWaiting());
|
|
self.addEventListener("activate", (ev) => ev.waitUntil(self.clients.claim()));
|
|
self.addEventListener("fetch", (event) => {
|
|
try {
|
|
const url = String(event.request.url || "");
|
|
if (!url.includes(TARGET_SUBSTRING)) return;
|
|
event.respondWith((async () => {
|
|
const upstream = await fetch(event.request);
|
|
if (!upstream || !upstream.body) return upstream;
|
|
const streamId = "sw-" + gid();
|
|
const meta = { url, startedAt: now(), bytes: 0, status: "started" };
|
|
broadcast({ type: "sw-intercept-start", streamId, meta });
|
|
const [clientStream, swStream] = upstream.body.tee();
|
|
const savePromise = (async () => {
|
|
const reader = swStream.getReader();
|
|
const decoder = new TextDecoder("utf-8");
|
|
let accumulated = "";
|
|
let sinceSaveBytes = 0;
|
|
let lastSaveAt = 0;
|
|
let lastBroadcastAt = 0;
|
|
async function maybeFlush(force = false) {
|
|
try {
|
|
const nowMs = now();
|
|
if (!force && sinceSaveBytes < SAVE_BYTES_THRESHOLD && nowMs - lastSaveAt < SAVE_TIME_THRESHOLD) return;
|
|
await safeFlushLastThread(streamId, accumulated, { bytes: meta.bytes });
|
|
sinceSaveBytes = 0;
|
|
lastSaveAt = nowMs;
|
|
if (nowMs - lastBroadcastAt > BROADCAST_THROTTLE_MS) {
|
|
lastBroadcastAt = nowMs;
|
|
broadcast({ type: "sw-intercept-progress", streamId, meta: { bytes: meta.bytes, savedAt: lastSaveAt, snippet: accumulated.slice(-1024) } });
|
|
}
|
|
} catch (err) {
|
|
broadcast({ type: "sw-intercept-error", streamId, meta: { error: String(err && err.message ? err.message : err) } });
|
|
}
|
|
}
|
|
try {
|
|
while (true) {
|
|
const { value, done } = await reader.read();
|
|
if (done) break;
|
|
let chunk = "";
|
|
try {
|
|
chunk = decoder.decode(value, { stream: true });
|
|
} catch (e) {
|
|
chunk = "";
|
|
}
|
|
accumulated += chunk;
|
|
const bytes = value ? value.byteLength || 0 : chunk.length;
|
|
meta.bytes += bytes;
|
|
sinceSaveBytes += bytes;
|
|
await maybeFlush(false);
|
|
}
|
|
await maybeFlush(true);
|
|
meta.status = "finished";
|
|
meta.endedAt = now();
|
|
broadcast({ type: "sw-intercept-end", streamId, meta: { totalBytes: meta.bytes, endedAt: meta.endedAt } });
|
|
} catch (err) {
|
|
meta.status = "error";
|
|
meta.error = String(err && err.message ? err.message : err);
|
|
broadcast({ type: "sw-intercept-error", streamId, meta: { error: meta.error } });
|
|
}
|
|
})();
|
|
event.waitUntil(savePromise);
|
|
return new Response(clientStream, { status: upstream.status, statusText: upstream.statusText, headers: upstream.headers });
|
|
})());
|
|
} catch (err) {
|
|
broadcast({ type: "sw-debug", text: "fetch handler error: " + String(err && err.message ? err.message : err) });
|
|
}
|
|
});
|
|
self.addEventListener("message", (event) => {
|
|
const data = event.data || {};
|
|
(async () => {
|
|
try {
|
|
if (data.type === "PING") {
|
|
if (event.ports && event.ports[0]) event.ports[0].postMessage({ type: "PONG", ts: now(), ok: true });
|
|
else broadcast({ type: "PONG", ts: now(), ok: true });
|
|
return;
|
|
}
|
|
if (data.type === "PING_STATUS") {
|
|
const reply = { type: "PONG_STATUS", ts: now() };
|
|
if (event.ports && event.ports[0]) event.ports[0].postMessage(reply);
|
|
else broadcast(reply);
|
|
return;
|
|
}
|
|
if (data.type === "TEST_WRITE") {
|
|
try {
|
|
const threads = await idbGetThreads();
|
|
const tid = "sw-test-" + gid();
|
|
const nowMs = now();
|
|
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 }] };
|
|
threads.unshift(testThread);
|
|
await idbWriteThreads(threads);
|
|
const res = { type: "TEST_WRITE_RESULT", ok: true, tid };
|
|
if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
|
|
else broadcast(res);
|
|
} catch (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);
|
|
else broadcast(res);
|
|
}
|
|
return;
|
|
}
|
|
if (data.type === "READ_KEY") {
|
|
const key = data.key || THREADS_KEY;
|
|
try {
|
|
const rec = await idbGetRaw(key);
|
|
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);
|
|
else broadcast(res);
|
|
} catch (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);
|
|
else broadcast(res);
|
|
}
|
|
return;
|
|
}
|
|
if (data.type === "LIST_SW_SAVED") {
|
|
try {
|
|
const threads = await idbGetThreads();
|
|
const found = [];
|
|
for (const t of threads || []) {
|
|
for (const m of t.messages || []) {
|
|
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 };
|
|
if (event.ports && event.ports[0]) event.ports[0].postMessage(res);
|
|
else broadcast(res);
|
|
} catch (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);
|
|
else broadcast(res);
|
|
}
|
|
return;
|
|
}
|
|
} catch (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);
|
|
}
|
|
})();
|
|
});
|