// page_script.js - runs inside the page context

chrome.runtime.onMessage.addListener((msg, sender, sendResponse) => {
  if (msg.action === "setVolume") {
    const player = document.querySelector(".html5-video-player");
    if (player && typeof player.setVolume === "function") {
      player.setVolume(msg.volume);
    } else {
      const video = document.querySelector("video");
      if (video) video.volume = Math.max(0, Math.min(1, msg.volume / 100));
    }
    sendResponse({ ok: true });
  }

  if (msg.action === "getVolume") {
    let v = null;
    const player = document.querySelector(".html5-video-player");
    if (player && typeof player.getVolume === "function") {
      v = player.getVolume();
    } else {
      const video = document.querySelector("video");
      if (video && typeof video.volume === "number") {
        v = Math.round(video.volume * 100);
      }
    }
    sendResponse({ volume: v });
  }
  return true; // async safe
});