// 3D 地球效果（首页 banner 右侧）基于 three-globe
// 依赖：全局 THREE 和 ThreeGlobe（在 index.html 中通过 CDN 引入）

(function () {
  function initGlobe() {
    var container = document.getElementById("bannerGlobe");
    if (!container) {
      console.warn("[Globe] bannerGlobe container not found");
      return;
    }
    if (typeof THREE === "undefined") {
      console.warn(
        "[Globe] THREE is undefined, please ensure three.min.js is loaded"
      );
      return;
    }
    if (typeof ThreeGlobe === "undefined") {
      console.warn(
        "[Globe] ThreeGlobe is undefined, please ensure three-globe.min.js is loaded"
      );
      return;
    }

    var width = container.clientWidth || 400;
    var height = container.clientHeight || 400;

    // 基础 Three.js 场景
    var scene = new THREE.Scene();

    var camera = new THREE.PerspectiveCamera(40, width / height, 0.1, 1000);
    // 初始视角，具体距离在 globe 准备好后根据半径自动调整
    camera.position.set(0, 0.2, 8.0);
    camera.lookAt(0, 0, 0);

    var renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true });
    renderer.setPixelRatio(Math.min(window.devicePixelRatio || 1, 2));
    renderer.setSize(width, height);
    renderer.setClearColor(0x000000, 0); // 透明背景
    container.appendChild(renderer.domElement);

    // 柔和光照
    var ambient = new THREE.AmbientLight(0xffffff, 0.65);
    scene.add(ambient);
    var dirLight = new THREE.DirectionalLight(0xffffff, 0.9);
    dirLight.position.set(5, 3, 5);
    scene.add(dirLight);

    // 节点数据示例（可替换为真实机房经纬度，至少 15 个）
    var nodes = [
      { name: "Beijing", lat: 39.9, lng: 116.4 },
      { name: "Shanghai", lat: 31.2, lng: 121.5 },
      { name: "Guangzhou", lat: 23.1, lng: 113.3 },
      { name: "Shenzhen", lat: 22.5, lng: 114.1 },
      { name: "Hong Kong", lat: 22.3, lng: 114.2 },
      { name: "Singapore", lat: 1.3, lng: 103.8 },
      { name: "Tokyo", lat: 35.7, lng: 139.7 },
      { name: "Osaka", lat: 34.7, lng: 135.5 },
      { name: "Seoul", lat: 37.5, lng: 126.9 },
      { name: "Sydney", lat: -33.9, lng: 151.2 },
      { name: "Mumbai", lat: 19.0, lng: 72.8 },
      { name: "Frankfurt", lat: 50.1, lng: 8.7 },
      { name: "London", lat: 51.5, lng: -0.1 },
      { name: "Paris", lat: 48.9, lng: 2.4 },
      { name: "New York", lat: 40.7, lng: -74.0 },
      { name: "San Francisco", lat: 37.8, lng: -122.4 }
    ];

    // three-globe 实例：使用空心陆地多边形（hollow globe 风格）
    var globe = new ThreeGlobe({
      waitForGlobeReady: true,
      animateIn: true,
    })
      // 不使用 three-globe 内置球体贴图，只保留大气层，陆地轮廓由 polygons 层绘制
      .showGlobe(false)
      .showAtmosphere(false)
      .atmosphereColor("#2b9fff")
      .atmosphereAltitude(0.18)
      .showGraticules(false);

    scene.add(globe);

    // 存放自定义“闪烁节点” mesh，便于在动画循环中更新
    var nodeGlows = [];

    // 告诉 three-globe 当前渲染器的实际尺寸，避免默认按全窗口大小计算导致比例失真
    if (typeof globe.rendererSize === "function") {
      globe.rendererSize(new THREE.Vector2(width, height));
    }

    // 在 globe 初始化完成后，根据实际半径自动调整相机距离，保证整球落在视野内
    if (typeof globe.onGlobeReady === "function" && typeof globe.getGlobeRadius === "function") {
      globe.onGlobeReady(function () {
        var r = globe.getGlobeRadius(); // three-globe 内部使用的球半径
        // 经验：以半径的约 3 倍距离拍摄，配合 40° 视角，可以完整显示球体并留一定留白
        var dist = r * 3.2;
        camera.position.set(0, 0.2, dist);
        camera.lookAt(0, 0, 0);
        // 通知 three-globe 当前视角，用于部分图层的内部计算
        if (typeof globe.setPointOfView === "function") {
          globe.setPointOfView(camera);
        }

        // 使用 globe 的工具方法，将经纬度转换为球面上的 3D 坐标
        var hasGetCoords = typeof globe.getCoords === "function";
        nodes.forEach(function (n, idx) {
          var pos;
          if (hasGetCoords) {
            // altitude 略高于球面，避免被多边形遮挡
            pos = globe.getCoords(n.lat, n.lng, 0.02);
          } else {
            // 兼容降级：简单根据半径和经纬度计算
            var phi = (90 - n.lat) * (Math.PI / 180);
            var theta = (n.lng + 180) * (Math.PI / 180);
            var rr = r * 1.02;
            pos = {
              x: -rr * Math.sin(phi) * Math.cos(theta),
              z: rr * Math.sin(phi) * Math.sin(theta),
              y: rr * Math.cos(phi)
            };
          }

          var glowGeom = new THREE.SphereGeometry(r * 0.03, 16, 16);
          var glowMat = new THREE.MeshBasicMaterial({
            // 绿色闪烁点
            color: "#22C55E",
            transparent: true,
            opacity: 0.7
          });
          var glowMesh = new THREE.Mesh(glowGeom, glowMat);
          glowMesh.position.set(pos.x, pos.y, pos.z);
          globe.add(glowMesh);

          nodeGlows.push({
            mesh: glowMesh,
            // 随机相位，让节点闪烁不同步
            phase: Math.random() * Math.PI * 2 + idx
          });
        });
      });
    }

    // 按 hollow-globe 风格加载陆地多边形，绘制空心地球轮廓
    (function loadLandPolygons() {
      if (typeof topojson === "undefined") {
        console.warn(
          "[Globe] topojson-client is undefined, unable to render hollow globe polygons"
        );
        return;
      }

      // 请确保 assets/data/land-110m.json 存在
      fetch("assets/data/land-110m.json")
        .then(function (res) {
          return res.json();
        })
        .then(function (landTopo) {
          try {
            var landGeo = topojson.feature(
              landTopo,
              landTopo.objects.land
            ).features;

            globe
              .polygonsData(landGeo)
              .polygonCapMaterial(
                new THREE.MeshLambertMaterial({
                  // 默认蓝色陆地，可按需自行调整
                  color: "#1D4ED8",
                  transparent: true,
                  opacity: 0.85,
                  side: THREE.DoubleSide,
                })
              )
              .polygonSideColor(function () {
                return "rgba(0,0,0,0)";
              });
          } catch (e) {
            console.warn("[Globe] failed to parse land-110m topology:", e);
          }
        })
        .catch(function (err) {
          console.warn(
            "[Globe] failed to load assets/data/land-110m.json:",
            err
          );
        });
    })();

    // 暴露给调试用
    if (typeof window !== "undefined") {
      window.__globe = globe;
    }

    // 自适应窗口大小
    function onResize() {
      if (!container) return;
      var w = container.clientWidth || width;
      var h = container.clientHeight || height;
      camera.aspect = w / h;
      camera.updateProjectionMatrix();
      renderer.setSize(w, h);
      // 同步 three-globe 对 renderer 尺寸的感知，保证缩放比例一致
      if (typeof globe.rendererSize === "function") {
        globe.rendererSize(new THREE.Vector2(w, h));
      }
    }
    window.addEventListener("resize", onResize);

    // 动画循环
    var lastTime = performance.now();
    function animate() {
      requestAnimationFrame(animate);

      var now = performance.now();
      var delta = (now - lastTime) / 1000;
      lastTime = now;

      // 地球自转
      globe.rotation.y += delta * 0.25;

      // 节点“呼吸式”闪烁
      var t = now / 1000;
      nodeGlows.forEach(function (n) {
        var s = 0.7 + 0.3 * Math.sin(t * 3 + n.phase);
        n.mesh.scale.set(s, s, s);
        n.mesh.material.opacity = 0.4 + 0.4 * Math.sin(t * 3 + n.phase);
      });

      renderer.render(scene, camera);
    }

    animate();
  }

  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", initGlobe);
  } else {
    initGlobe();
  }
})();*** End Patch ***!