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Security & Stability: Fixed SW race, ping-pong loops, and invite parsing

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This commit is contained in:
Timo
2026-04-22 10:20:45 +02:00
parent d750d96db5
commit 88cb313fc0
3 changed files with 47 additions and 28 deletions
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extension/content.js
+21 -11
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@@ -7,7 +7,7 @@
if (window.koalaSyncInjected) return;
window.koalaSyncInjected = true;
let processingCommandUntil = 0;
let lastTargetState = null;
// --- Helper: find the best video element on the page ---
function findVideo() {
@@ -20,7 +20,6 @@
const video = findVideo();
if (!video) return;
processingCommandUntil = Date.now() + 1000;
try {
const host = window.location.hostname.toLowerCase();
const isYouTube = host.includes('youtube.com');
@@ -31,11 +30,12 @@
if (ytButton) {
const isCurrentlyPlaying = !video.paused;
if ((action === 'play' && !isCurrentlyPlaying) || (action === 'pause' && isCurrentlyPlaying)) {
lastTargetState = action === 'play' ? 'playing' : 'paused';
ytButton.click();
}
if (action === 'seek') video.currentTime = data.targetTime;
return;
}
if (action === 'seek') video.currentTime = data.targetTime;
return;
}
if (isTwitch) {
@@ -43,17 +43,20 @@
if (twitchButton) {
const isCurrentlyPlaying = !video.paused;
if ((action === 'play' && !isCurrentlyPlaying) || (action === 'pause' && isCurrentlyPlaying)) {
lastTargetState = action === 'play' ? 'playing' : 'paused';
twitchButton.click();
}
if (action === 'seek') video.currentTime = data.targetTime;
return;
}
if (action === 'seek') video.currentTime = data.targetTime;
return;
}
// Fallback for native HTML5
if (action === 'play') {
lastTargetState = 'playing';
video.play().catch(() => {});
} else if (action === 'pause') {
lastTargetState = 'paused';
video.pause();
} else if (action === 'seek') {
video.currentTime = data.targetTime;
@@ -104,17 +107,15 @@
} else if (action === 'seek') {
tryMediaAction('seek', payload);
} else if (action === 'force_sync_prepare') {
processingCommandUntil = Date.now() + 10000;
if (!payload || payload.targetTime === undefined) return;
const video = findVideo();
if (video) {
lastTargetState = 'paused';
video.pause();
video.currentTime = payload.targetTime;
pollSeekReady(payload.targetTime).then(() => {
chrome.runtime.sendMessage({ type: 'FORCE_SYNC_ACK' });
processingCommandUntil = Date.now() + 1000;
});
} else {
processingCommandUntil = 0;
}
} else if (action === 'force_sync_execute') {
tryMediaAction('play');
@@ -124,10 +125,19 @@
// Detect native events
function reportEvent(action) {
if (Date.now() < processingCommandUntil) return;
const video = findVideo();
if (!video) return;
const eventState = action === 'play' ? 'playing' : (action === 'pause' ? 'paused' : null);
if (eventState && lastTargetState === eventState) {
lastTargetState = null; // Consume the match
return; // Ignore event caused by our programmatic action
}
if (action !== 'seek') {
lastTargetState = null; // Reset on mismatch
}
chrome.runtime.sendMessage({
type: 'CONTENT_EVENT',
action,