const {
    Segment,
    useDefault
} = require('segmentit');

const segmentit = useDefault(new Segment());
const result = segmentit.doSegment('工信处女干事每月经过下属科室都要亲口交代24口交换机等技术性器件的安装工作。');
console.log(result);

0: {w: "工信处", p: 32}
1: {w: "女", p: 1048576}
2: {w: "干事", p: 1048576}
3: {w: "每月", p: 65536}
4: {w: "经过", p: 4096}
5: {w: "下属", p: 1048576}
6: {w: "科室", p: 1048576}
7: {w: "都", p: 134217728}
8: {w: "要"}
9: {w: "亲口", p: 134217728}
10: {w: "交代", p: 1048576}
11: {w: "24口", p: 2097152}
12: {w: "交换机", p: 8}
13: {w: "等", p: 8192}
14: {w: "技术性", p: 536870912}
15: {w: "器件", p: 1048576}
16: {w: "的", p: 8192}
17: {w: "安装", p: 4096}
18: {w: "工作", p: 1048576}
19: {w: "。", p: 2048}

const getTextFeature = (text, color) => {
  try {
    const canvas = document.createElement('canvas');
    /*
      因为进行scale以后的图案区域实际上不能确定，
      理论上应该只在(0,0,1,1)，但有的也会在它周围的像素里，
      综合效率的考虑，给一个2*2的范围是比较合适的;
    */
    canvas.width = 2;
    canvas.height = 2;

    const ctx = canvas.getContext('2d');
    ctx.textBaseline = 'top';
    ctx.font = '100px sans-serif';
    ctx.fillStyle = color;
    ctx.scale(0.01, 0.01);
    ctx.fillText(text, 0, 0);

    const imageData = ctx.getImageData(0, 0, 2, 2).data;
    // 在一些系统里Uint8ClampedArray不支持常规的数组方法，需要转换一下
    const imageDataArr = [];
    for (let i = 0; i < imageData.length; i++) {
      imageDataArr[i] = imageData[i];
    }

    return imageDataArr.reduce((a, b) => (a + b), 0) > 0 ? 
      imageDataArr.toString() : false;
  } catch (e) {
    return false;
  }
};

const distribute = (text, mode) => {
  const feature = getTextFeature(text, '#000');
  return mode ? (feature && feature === getTextFeature(text, '#FFF'))
    : feature;
};

const ifEmoji = (text) => {
  /*
    用一个最悠久而常见 emoji 来判断当前系统是使用图片还是字体来显示 emoji，
    若是图片则去做上色比对，否则只对可见性做判断。
  */
  const mode = distribute('😁');
  return distribute(text, mode);
}

export default ifEmoji;
/*
    Usage:
*/
ifEmoji('蛤') // => false
ifEmoji('🐸') // => If your system / browser supports this emoji character correctly, the returned value will be true.

function onDemandScript(url, callback) {
    callback = (typeof callback != 'undefined') ? callback : {};
    $.ajax({
        type: "GET",
        url: url,
        success: callback,
        dataType: "script",
        cache: true
    });
}