import {TrustedRuntimeSession} from "./protocol.js";
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import {collectVisiblePage} from "./page_extract.js";
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import {NativePortTransport, OwnedTabLifecycle, SlotCoordinator, SlotStateStore} from "./runtime.js";
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const HOST = "com.project_info.bili_dynamic_refresh";
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const ALARM = "project-info-dynamic-refresh-half-hour";
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const PERIOD_MINUTES = 30;
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async function hashSlot(value) {
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const material = new TextEncoder().encode(String(value));
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const digest = await crypto.subtle.digest("SHA-256", material);
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return [...new Uint8Array(digest)].map((byte) => byte.toString(16).padStart(2, "0")).join("");
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}
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function nextBoundary(now = Date.now()) {
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const interval = PERIOD_MINUTES * 60 * 1000;
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return Math.floor(now / interval) * interval + interval;
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}
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function createSession(api) {
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return new TrustedRuntimeSession(api, {
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extension_id: chrome.runtime.id,
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version: chrome.runtime.getManifest().version,
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manifest_name: chrome.runtime.getManifest().name
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});
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}
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const lifecycle = new OwnedTabLifecycle(chrome);
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const slotStore = new SlotStateStore(chrome);
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const coordinator = new SlotCoordinator({
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lifecycle,
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slotStore,
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connect: () => new NativePortTransport(chrome.runtime.connectNative(HOST)),
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createSession,
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hashSlot,
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collectPage: collectVisiblePage
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});
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function schedule() {
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chrome.alarms.create(ALARM, {when: nextBoundary(), periodInMinutes: PERIOD_MINUTES});
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}
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function recoverAtStartup() {
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// Never leak a raw storage/runtime exception from a startup event. The next
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// scheduled run will surface the same strict fixed code without acting.
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void coordinator.recover().catch(() => console.error("E_SLOT_STATE"));
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}
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chrome.runtime.onInstalled.addListener(() => {
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schedule();
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recoverAtStartup();
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});
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chrome.runtime.onStartup.addListener(() => {
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schedule();
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recoverAtStartup();
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});
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chrome.alarms.onAlarm.addListener((alarm) => {
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if (alarm?.name !== ALARM) return;
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// The slot material is deterministic at the half-hour boundary and carries
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// no session, cookie, profile, URL query, or page payload data.
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const slot = Math.floor(Number(alarm.scheduledTime) / (PERIOD_MINUTES * 60 * 1000));
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void coordinator.run(`dynamic-slot:${slot}`);
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});
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