index.js

var fs = require('hexo-fs');
var path = require('path');
var url = require("url");

// 将文件加入复制队列
function registerFile(pathname, file) {
  generators.push( {
    path: pathname,
    data: function () {
      return fs.createReadStream(file)
    }
  });
}

// 使用DFS将目录中的所有文件加入队列
// 目前仍使用同步
function registerDir(pathname, dir) {
  var lsDir = fs.listDirSync(dir)
  lsDir.forEach(function (file) {
    registerFile(pathname + file, path.resolve(dir, file));
  }, this);
}


var generators = new Array();
var config = Object.assign( {
    model: "z16",
    width: 150,
    height: 300,
    scaling: 1,
    opacityDefault: 0.7,
    opacityHover: 1,
    mobileShow: "true",
    mobileScaling: 0.5,
    position: "right",
    horizontalOffset: 0,
    verticalOffset: -20,
    id: "live2dcanvas",
    deviceJsSource: "local"
  },
  hexo.config.live2d,
  hexo.theme.config.live2d
);
// 将替换模板中 live2d 的网页代码
hexo.extend.helper.register('live2d', function() {
  return `
<div id="hexo-helper-live2d">
  <canvas id="${config.id}" width="${config.width * config.scaling}" height="${config.height * config.scaling}"></canvas>
</div>
<style>
  #${config.id}{
    position: fixed;
    width: ${config.width}px;
    height: ${config.height}px;
    opacity:${config.opacityDefault};
    ${config.position}: ${config.horizontalOffset}px;
    z-index: 999;
    pointer-events: none;
    bottom: ${config.verticalOffset}px;
  }
</style>
<script type="text/javascript" src="${config.deviceJsSource == "local" ? `/live2d/device.min.js`: (config.deviceJsSource == "official" ? `https://unpkg.com/current-device/umd/current-device.min.js` : config.deviceJsSource)}"></script>
<script type="text/javascript">
const loadScript = function loadScript(c,b){var a=document.createElement("script");a.type="text/javascript";"undefined"!=typeof b&&(a.readyState?a.onreadystatechange=function(){if("loaded"==a.readyState||"complete"==a.readyState)a.onreadystatechange=null,b()}:a.onload=function(){b()});a.src=c;document.body.appendChild(a)};
(function(){
  if((typeof(device) != 'undefined') && (device.mobile())){
    ${config.mobileShow ?
   `document.getElementById("${config.id}").style.width = '${config.width * config.mobileScaling}px';
    document.getElementById("${config.id}").style.height = '${config.height * config.mobileScaling}px';`
   :
   `var trElement = document.getElementById('hexo-helper-live2d');
    trElement.parentNode.removeChild(trElement);
    return;`}
  }else
    if (typeof(device) === 'undefined') console.error('Cannot find current-device script.');
  loadScript("/live2d/script.js", function(){loadlive2d(${JSON.stringify(config.id)}, ${JSON.stringify(url.resolve("/live2d/assets/", config.model + ".model.json"))}, 0.5);});
})();
</script>
`
});

// 复制live2d模型文件
// 先在 博客目录/live2d_models/ 目录下寻找
fs.exists(path.resolve(hexo.base_dir, path.join('./live2d_models/', config.model)), function(exists){
  if(exists){
    registerDir("live2d/assets/", path.resolve(hexo.base_dir, path.join('./live2d_models/', config.model)));
  }else{ // 若未找到，在 插件目录/assets/ 下继续寻找
    registerDir('live2d/assets/', path.resolve(__dirname, path.join('./assets/', config.model)));
  }
});

// 复制 live2d客户端 脚本
registerFile('live2d/script.js', path.resolve(__dirname, './dist/bundle.js'));

// 复制 device.js 脚本
if(config.deviceJsSource == "local"){
  fs.exists(path.resolve(__dirname, './dist/device.min.js'), function(exists){
  if(exists){
    registerFile('live2d/device.min.js', path.resolve(__dirname, './dist/device.min.js'));
  }else{// 若未找到，则报错
    console.log("Live2d serverJs: can't find device.js, contant the author for support.");
    return ;
  }
  });
}

hexo.extend.generator.register('live2d', function (locals) {
  return generators;
});