import * as THREE from 'three';
import { EffectComposer } from 'three/examples/jsm/postprocessing/EffectComposer.js';
import { OutlinePass } from 'three/examples/jsm/postprocessing/OutlinePass.js';
import { setModalCenter, setTag3D, gradientColors } from '/@/utils/threejs/util';
import { CSS3DObject } from 'three/examples/jsm/renderers/CSS3DRenderer.js';
import { green, yellow } from '@ant-design/colors';

// import * as dat from 'dat.gui';
// const gui = new dat.GUI();
// gui.domElement.style = 'position:absolute;top:100px;left:10px;z-index:99999999999999';
type Unit = {
  id: string;
  ratio: number;
  color: THREE.Color;
};

class GasAssessmen {
  model;
  modelName = 'workFace';
  group: THREE.Object3D = new THREE.Object3D();
  planeGroup: THREE.Group = new THREE.Group();
  bloomComposer: EffectComposer | null = null;
  finalComposer: EffectComposer | null = null;
  outlinePass: OutlinePass | null = null;
  positions: THREE.Vector3[][] = [];
  bloomLayer = new THREE.Layers();
  darkMaterial = new THREE.MeshBasicMaterial({ color: 'black', transparent: true, side: THREE.DoubleSide });
  materials = {};
  glob = {
    ENTIRE_SCENE: 0,
    BLOOM_SCENE: 10,
    N: 100,
  };
  locationTexture: THREE.Texture | null = null;
  warningLocationTexture: THREE.Texture | null = null;
  errorLocationTexture: THREE.Texture | null = null;
  playerStartClickTime1 = new Date().getTime();
  playerStartClickTime2 = new Date().getTime();
  planeNum = 0;
  unitList: Unit[] = [];

  constructor(model) {
    this.model = model;
    this.group.name = this.modelName;
  }
  addLight() {
    // const _this = this;
    const directionalLight = new THREE.DirectionalLight(0xffffff, 1);
    directionalLight.position.set(-196, 150, 258);
    this.group.add(directionalLight);
    directionalLight.target = this.group;
  }

  render() {
    this.model.renderer?.render(this.model.scene as THREE.Scene, this.model.camera as THREE.PerspectiveCamera);
  }

  setPlanes1 = (n) => {
    // const sizeList = [0.2, 0.3, 0.1, 0.2, 0.2];
    const colors = {
      c1: new THREE.Color(0x00fe00), // >90
      c2: new THREE.Color(0xf9b866), // >75 <90  249,184,102
      c3: new THREE.Color(0xfefe00), // 50-75  254,254,0
      c4: new THREE.Color(0xfe6600), // 25-50 254,102,0
      c5: new THREE.Color(0xb00101), // <25 176,1,1
    };

    const sizeList = [
      {
        id: '111',
        ratio: 0.5,
        color: colors.c1,
      },
      {
        id: '222',
        ratio: 0.3,
        color: colors.c2,
      },
      {
        id: '333',
        ratio: 0.2,
        color: colors.c4,
      },
      // {
      //   id: '444',
      //   ratio: 0.2,
      //   color: colors.c5,
      // },
      // {
      //   id: '555',
      //   ratio: 0.2,
      //   color: colors.c3,
      // },
    ];
    this.unitList = sizeList;

    // width = 7.713 height =3.717

    // const sizeList = [
    //   {
    //     ratio: 0.4,
    //     color: colors.c1,
    //   },
    //   {
    //     ratio: 0.5,
    //     color: colors.c2,
    //   },
    //   {
    //     ratio: 0.1,
    //     color: colors.c4,
    //   },
    // ];

    const geometry = new THREE.PlaneGeometry(7.723, 3.72, 1, 1);

    // 初始化累积比例数组和颜色数组
    const accumulatedRatios = [];
    const colorsArray = new Float32Array(3 * sizeList.length);

    // 计算累积比例和颜色数组
    function updateShaderData(sizeList) {
      let accRatio = 0;
      for (let i = 0; i < sizeList.length; i++) {
        const item = sizeList[i];
        accRatio += item.ratio;
        accumulatedRatios.push(accRatio);
        colorsArray[i * 3] = item.color.r;
        colorsArray[i * 3 + 1] = item.color.g;
        colorsArray[i * 3 + 2] = item.color.b;
      }
    }

    updateShaderData(sizeList); // 初始调用

    // 定义着色器代码
    const vertexShader = `
    varying vec2 vUv;
    void main() {
        vUv = uv;
        gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);
    }
`;

    const fragmentShader = `
    varying vec2 vUv;
    uniform float ratios[${sizeList.length}];
    uniform vec3 colors[${sizeList.length}];
    
    void main() {
        for(int i = 0; i < ${sizeList.length}; i++) {
            if(vUv.x < ratios[i]) {
                gl_FragColor = vec4(colors[i], 1.0);
                return;
            }
        }
        gl_FragColor = vec4(0.0, 0.0, 0.0, 0.5);
    }
  `;

    //   const fragmentShader = `
    //     varying vec2 vUv;
    //     uniform float ratios[${sizeList.length + 1}]; // 加入了起始点 0
    //     uniform vec3 colors[${sizeList.length}];

    //     vec3 lerp(vec3 a, vec3 b, float t) {
    //         return a + t * (b - a);
    //     }

    //     void main() {
    //         int index = 0;
    //         for(int i = 1; i <= ${sizeList.length}; i++) {
    //             if(vUv.x >= ratios[i-1] && vUv.x < ratios[i]) {
    //                 index = i - 1;
    //                 break;
    //             }
    //         }

    //         // 如果是最后一个颜色块，直接使用其颜色
    //         if (index == ${sizeList.length - 1}) {
    //             gl_FragColor = vec4(colors[index], 1.0);
    //         } else {
    //             // 计算该像素在当前颜色块内的相对位置
    //             float t = (vUv.x - ratios[index]) / (ratios[index + 1] - ratios[index]);
    //             // 在相邻颜色间进行线性插值
    //             vec3 color = lerp(colors[index], colors[index + 1], t);
    //             gl_FragColor = vec4(color, 1.0);
    //         }
    //     }
    // `;

    // 创建着色器材质
    const material = new THREE.ShaderMaterial({
      uniforms: {
        ratios: { value: accumulatedRatios },
        colors: { value: colorsArray },
      },
      vertexShader: vertexShader,
      fragmentShader: fragmentShader,
      depthTest: false,
      depthWrite: false,
    });

    // // 当 sizeList 数据变化时调用此函数
    // function updateSizeList(newSizeList) {
    //   accumulatedRatios.length = 0; // 清空累积比例数组
    //   updateShaderData(newSizeList);
    //   material.uniforms.ratios.value = accumulatedRatios;
    //   material.uniforms.colors.value = colorsArray;
    //   material.needsUpdate = true;
    // }

    // 创建网格并添加到场景中
    const plane = new THREE.Mesh(geometry, material);
    plane.rotation.x = -Math.PI / 2;
    plane.position.set(-0.2, 0.15, -0.03);
    plane.name = 'unit';
    this.planeGroup.add(plane);
    this.group.add(this.planeGroup);
  };

  setPlanes = (unitList: any[]) => {
    if (!unitList || unitList.length === 0) return;
    // 要根据unitList来计算比例
    type Point = { u: number; v: number };
    let max = 0;
    const unitLen = unitList[unitList.length - 1]['unitLen'].split(',');
    max = Math.max(max, ...unitLen);
    const regions = <{ points: Point[]; color: any[] }[]>[];
    for (let i = 0; i < unitList.length; i++) {
      const item = unitList[i];
      const unitRatio: Point[] = [];
      const color = new THREE.Color(item['unitColor']);
      if (item['unitLen']) {
        const unitLen = item['unitLen'].split(',');
        const sortList = [1, 0, 2, 3];
        for (let j = 0; j < sortList.length; j++) {
          const x = unitLen[sortList[j]];
          const unitU = Number((x / max).toFixed(2));
          const unitV = sortList[j] % 2 === 0 ? 0.0 : 1.0;
          unitRatio.push({
            u: unitU == 0 ? 0.0 : unitU,
            v: unitV == 0 ? 0.0 : unitV,
          });
        }
      }
      regions.push({
        points: unitRatio,
        color: [color.r, color.g, color.b],
        // color: [1, 0, 0],
      });
    }

    // 自定义着色器
    const vertexShader = `
    varying vec2 vUv;
    void main() {
        vUv = uv; // 传递纹理坐标
        gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);
    }
`;

    const fragmentShader = `
    uniform vec3 regionColors[${regions.length}]; // 区域颜色数组
    uniform vec4 regionPoints[${regions.length * 4}]; // 区域顶点数组 (每个区域4个点)
    varying vec2 vUv;

    // 判断点是否在四边形内（通过叉积法）
    bool isPointInQuad(vec2 p, vec2 a, vec2 b, vec2 c, vec2 d) {
        vec2 ab = b - a;
        vec2 bc = c - b;
        vec2 cd = d - c;
        vec2 da = a - d;

        vec2 ap = p - a;
        vec2 bp = p - b;
        vec2 cp = p - c;
        vec2 dp = p - d;

        float cross1 = ab.x * ap.y - ab.y * ap.x;
        float cross2 = bc.x * bp.y - bc.y * bp.x;
        float cross3 = cd.x * cp.y - cd.y * cp.x;
        float cross4 = da.x * dp.y - da.y * dp.x;

        return (cross1 >= 0.0 && cross2 >= 0.0 && cross3 >= 0.0 && cross4 >= 0.0) ||
               (cross1 <= 0.0 && cross2 <= 0.0 && cross3 <= 0.0 && cross4 <= 0.0);
    }

    void main() {
        vec3 finalColor = vec3(0.0);
        for (int i = 0; i < ${regions.length}; i++) {
            vec4 p1 = regionPoints[i * 4];
            vec4 p2 = regionPoints[i * 4 + 1];
            vec4 p3 = regionPoints[i * 4 + 2];
            vec4 p4 = regionPoints[i * 4 + 3];

            // 判断当前片段是否在梯形区域内
            if (isPointInQuad(vUv, p1.xy, p2.xy, p3.xy, p4.xy)) {
                finalColor = regionColors[i];
                break;
            }
        }
        gl_FragColor = vec4(finalColor, 1.0);
    }
`;

    const geometry = new THREE.PlaneGeometry(7.723, 3.72, 1, 1);
    // 创建材质
    const material = new THREE.ShaderMaterial({
      vertexShader,
      fragmentShader,
      uniforms: {
        regionColors: { value: regions.map((region) => new THREE.Vector3(...region.color)) },
        regionPoints: {
          value: regions.flatMap((region) => region.points.map((p) => new THREE.Vector4(p.u, p.v, 0, 0))),
        },
      },
      depthTest: false,
      depthWrite: false,
    });

    // 创建网格并添加到场景中
    const plane = new THREE.Mesh(geometry, material);
    plane.rotation.x = -Math.PI / 2;
    plane.position.set(-0.2, 0.15, -0.03);
    plane.name = 'unit';
    this.planeGroup.add(plane);
    this.group.add(this.planeGroup);
  };

  // 清除抽采单元绘制面
  clearPlanes = () => {
    for (let i = 0; i < this.planeNum; i++) {
      const plane = this.planeGroup.getObjectByName(`unit${i}`);
      const label = this.planeGroup.getObjectByName(`planeText${i}`);
      if (plane) this.planeGroup.remove(plane);
      if (label) this.planeGroup.remove(label);
    }
  };
  // 抽采单元内容显示
  setCss3D = (unitList: any[]) => {
    const sizeList: number[] = [];
    if (!unitList || unitList.length === 0) return;
    let max = 0;
    const unitLen = unitList[unitList.length - 1]['unitLen'].split(',');
    max = Math.max(max, ...unitLen);
    for (let i = 0; i < unitList.length; i++) {
      const item = unitList[i];
      const unitLen = item['unitLen'].split(',');
      const unitMax = Math.max(...unitLen);
      const unitMin = Math.min(...unitLen);
      sizeList.push((unitMax - unitMin) / max);
    }
    let leftW = 0;
    for (let i = 0; i < sizeList.length; i++) {
      const label = setTag3D(`抽采单元${i + 1}`, 'gas_unit_text');
      label.scale.set(0.02, 0.02, 0.02); //根据相机渲染范围控制HTML 3D标签尺寸
      label.position.set((leftW + sizeList[i] / 2) * 7.913 - 4.22, 0.015, 0.142);
      label.name = 'planeText' + i;
      this.planeGroup.add(label);

      const obj = this.group.getObjectByName(`unitText${i}`);
      if (!obj) {
        const element = document.getElementById(`gasUnitBox${i + 1}`) as HTMLElement;
        if (element) {
          const gasUnitCSS3D = new CSS3DObject(element);
          gasUnitCSS3D.name = `unitText${i}`;
          gasUnitCSS3D.scale.set(0.01, 0.01, 0.01);
          gasUnitCSS3D.position.set((leftW + sizeList[i] / 2) * 10.93 - 11.17, 0.015, -3.442);
          gasUnitCSS3D.lookAt(gasUnitCSS3D.position.x, gasUnitCSS3D.position.y + 1.2, gasUnitCSS3D.position.y);
          this.planeGroup.add(gasUnitCSS3D);
        }
      }

      leftW += sizeList[i];
    }
  };
  // 显示或隐藏抽采单元显示内容
  changeCss3D = () => {
    for (let i = 0; i < this.planeNum; i++) {
      const planeText = this.planeGroup.getObjectByName(`planeText${i}`);
      this.planeGroup.remove(planeText);
      const unitText = this.planeGroup.getObjectByName(`unitText${i}`);
      this.planeGroup.remove(unitText);
    }
  };
  // 清除抽采单元显示内容
  clearCss3D = () => {
    // const obj = this.group.getObjectByName(`unitText`);
    // if (obj) this.group.remove(obj);
    // const element = document.getElementById(`gasUnitBox`) as HTMLElement;
    // if (element) {
    //   element.remove();
    // }
    // for (let i = 0; i < this.planeNum; i++) {
    //   const label = this.planeGroup.getObjectByName(`planeText${i}`);
    //   if (label) this.planeGroup.remove(label);
    // }
    this.model.clearGroup(this.planeGroup);
    this.planeGroup = new THREE.Group();
  };

  /* 点击 */
  mousedownModel(intersects: THREE.Intersection<THREE.Object3D<THREE.Event>>[]) {
    // 判断是否点击到视频
    return new Promise((resolve) => {
      intersects.find((intersect) => {
        const intersectedObject = intersect.object;
        if (intersectedObject.name == 'unit') {
          // 如果对象是我们的平面，并且它有自定义属性来标识它的 UV 范围
          if (intersectedObject && intersectedObject.material && intersectedObject.material.uniforms) {
            const uv = intersect.uv; // 点击点的 UV 坐标
            const clickedRatio = uv.x; // 使用 UV 的 x 分量作为比例值

            // 根据点击的比例找到对应的色块
            let clickedColorIndex = -1;
            let accRatio = 0;
            for (let i = 0; i < this.unitList.length - 1; i++) {
              const unitData = this.unitList[i];
              accRatio += unitData.ratio;
              if (clickedRatio < accRatio) {
                clickedColorIndex = i;
                break;
              }
            }

            if (clickedColorIndex !== -1) {
              const unitData = this.unitList[clickedColorIndex];
              const unitId = unitData.id;
              // window.open(`${location.origin}/gasUnitAssessment/home?id=${unitId}`);
              resolve(unitId);
            }
          }
          return true;
        }
        return false;
      });
      this.render();
    });
  }

  mouseUpModel() {
    //
  }

  mountedThree() {
    return new Promise(async (resolve) => {
      this.model.renderer.sortObjects = true;
      this.model.orbitControls.update();
      this.model.setGLTFModel(['workFace1'], this.group).then(async () => {
        this.group.children.forEach((object: THREE.Object3D) => {
          if (object.name.startsWith('workFace')) {
            setModalCenter(object);
          }
        });
        this.group.name = this.modelName;
        this.addLight();
        resolve(null);
      });
    });
  }

  destroy() {
    this.model.clearGroup(this.group);
    this.model = null;
    this.group = null;
    this.bloomComposer?.dispose();
    this.finalComposer?.dispose();
  }
}

export default GasAssessmen;