//default values
var defaultOptions = {
  countable: true,
  position: "top",
  margin: "10px",
  float: "right",
  fontsize: "0.9em",
  color: "rgb(90,90,90)",
  language: "english",
  isExpected: true,
};

// Docsify plugin functions
function plugin(hook, vm) {
  if (!defaultOptions.countable) {
    return;
  }
  let wordsCount;
  hook.beforeEach(function (content) {
    // Match regex every time you start parsing .md
    wordsCount = content.match(/([\u4e00-\u9fa5]+?|[a-zA-Z0-9]+)/g).length;
    return content;
  });
  hook.afterEach(function (html, next) {
    let str = wordsCount + " words";
    let readTime = Math.ceil(wordsCount / 400) + " min";
    //Determine whether to use the Chinese style according to the attribute "language"
    if (defaultOptions.language === "chinese") {
      str = wordsCount + " 字";
      readTime = Math.ceil(wordsCount / 400) + " 分钟";
    }

    //add html string
    next(
      `
        ${defaultOptions.position === "bottom" ? html : ""}
        <div style="margin-${defaultOptions.position ? "bottom" : "top"}: ${
        defaultOptions.margin
      };">
            <span style="
                  float: ${defaultOptions.float === "right" ? "right" : "left"};
                  font-size: ${defaultOptions.fontsize};
                  color:${defaultOptions.color};">
            ${str}
            ${defaultOptions.isExpected ? `&nbsp; | &nbsp;${readTime}` : ""}
            </span>
            <div style="clear: both"></div>
        </div>
        ${defaultOptions.position !== "bottom" ? html : ""}
        `
    );
  });
}

// Docsify plugin options
window.$docsify["count"] = Object.assign(
  defaultOptions,
  window.$docsify["count"]
);
window.$docsify.plugins = [].concat(plugin, window.$docsify.plugins);