/*!
 * artplayer-plugin-ambilight.js v1.1.0
 * Github: https://github.com/zhw2590582/ArtPlayer
 * (c) 2017-2026 Harvey Zhao
 * Released under the MIT License.
 */
function artplayerPluginAmbilight(option = {}) {
  return (art) => {
    const { $video } = art.template;
    const { createElement, addClass, setStyles } = art.constructor.utils;
    const { blur = "50px", opacity = 0.5, frequency = 10, duration = 0.3 } = option;
    const $ambilight = createElement("div");
    const gridItems = createGridItems($ambilight);
    setupAmbilight($ambilight, $video);
    setupGridItems(gridItems, blur, opacity, duration);
    const updateColors = createColorUpdater($video, gridItems, frequency);
    let animationFrameId = null;
    function start() {
      if (!animationFrameId) {
        updateColors();
      }
    }
    function stop() {
      if (animationFrameId) {
        cancelAnimationFrame(animationFrameId);
        animationFrameId = null;
      }
    }
    art.on("ready", start);
    art.on("destroy", stop);
    return {
      name: "artplayerPluginAmbilight",
      start,
      stop
    };
    function createGridItems($ambilight2) {
      $ambilight2.innerHTML = Array.from({ length: 9 }).fill("<div></div>").join("");
      return Array.from($ambilight2.children);
    }
    function setupAmbilight($ambilight2, $video2) {
      addClass($ambilight2, "artplayer-plugin-ambilight");
      $video2.parentNode.insertBefore($ambilight2, $video2);
      setStyles($ambilight2, {
        position: "absolute",
        top: 0,
        left: 0,
        zIndex: 9,
        inset: 0,
        display: "grid",
        gridTemplateColumns: "1fr 1fr 1fr",
        gridTemplateRows: "1fr 1fr 1fr"
      });
    }
    function setupGridItems(gridItems2, blur2, opacity2, duration2) {
      gridItems2.forEach(($item) => {
        setStyles($item, {
          opacity: opacity2,
          filter: `blur(${blur2})`,
          transition: `background-color ${duration2}s ease`
        });
      });
    }
    function createColorUpdater($video2, gridItems2, frequency2) {
      const canvas = createElement("canvas");
      const ctx = canvas.getContext("2d");
      canvas.width = 3;
      canvas.height = 3;
      function getAverageColor(x, y, w, h) {
        ctx.drawImage($video2, x, y, w, h, 0, 0, 1, 1);
        const [r, g, b] = ctx.getImageData(0, 0, 1, 1).data;
        return `rgb(${r}, ${g}, ${b})`;
      }
      let lastUpdateTime = 0;
      return function updateColors2() {
        const now = performance.now();
        if (now - lastUpdateTime < 1e3 / frequency2 || !art.playing) {
          animationFrameId = requestAnimationFrame(updateColors2);
          return;
        }
        lastUpdateTime = now;
        const w = $video2.videoWidth / 3;
        const h = $video2.videoHeight / 3;
        const colors = [
          [0, 0],
          [w, 0],
          [2 * w, 0],
          [0, h],
          [w, h],
          [2 * w, h],
          [0, 2 * h],
          [w, 2 * h],
          [2 * w, 2 * h]
        ].map(([x, y]) => getAverageColor(x, y, w, h));
        gridItems2.forEach(($item, index) => {
          $item.style.backgroundColor = colors[index];
        });
        animationFrameId = requestAnimationFrame(updateColors2);
      };
    }
  };
}
export {
  artplayerPluginAmbilight as default
};