✨ feat: aside widget 增加部分參數可配置

✨ feat: aside widget的Categories，Tags，post,Archives可配置limit
✨ feat: 整合公告欄配置到aside去
🐛 fix: 修復當flink.yml內容為空時，報錯的bug
💄 fix: 修復darkmode下 aside 查看更多文字顏色太淺的bug

scripts/helpers/aside_categories.js

@@ -0,0 +1,87 @@
+/**
+ * Butterfly
+ * for aside categories
+ */
+
+'use strict'
+
+hexo.extend.helper.register('aside_categories', function (categories, options) {
+  if (!options && (!categories || !Object.prototype.hasOwnProperty.call(categories, 'length'))) {
+    options = categories
+    categories = this.site.categories
+  }
+
+  if (!categories || !categories.length) return ''
+  options = options || {}
+  const { config } = this
+  const showCount = Object.prototype.hasOwnProperty.call(options, 'show_count') ? options.show_count : true
+  const depth = options.depth ? parseInt(options.depth, 10) : 0
+  const orderby = options.orderby || 'name'
+  const order = options.order || 1
+  const tagDir = this.url_for(config.tag_dir)
+  const limit = options.limit === 0 ? categories.length : options.limit
+  const buttonLabel = this._p('aside.more_button')
+  const prepareQuery = parent => {
+    const query = {}
+    if (parent) {
+      query.parent = parent
+    } else {
+      query.parent = {
+        $exists: false
+      }
+    }
+    return categories.find(query).sort(orderby, order).filter(cat => cat.length)
+  }
+
+  const hierarchicalList = (t, level, parent) => {
+    let result = ''
+    if (t > 0) {
+      prepareQuery(parent).forEach((cat, i) => {
+        if (t > 0) {
+          t = t - 1
+          let child
+          if (!depth || level + 1 < depth) {
+            var childList = hierarchicalList(t, level + 1, cat._id)
+            child = childList[0]
+            t = childList[1]
+          }
+
+          result += '<li class="aside-category-list-item">'
+
+          result += `<a class="aside-category-list-link" href="${this.url_for(cat.path)}">`
+          result += `<span class="aside-category-list-name">${cat.name}</span>`
+
+          if (showCount) {
+            result += `<span class="aside-category-list-count">${cat.length}</span>`
+          }
+
+          result += '</a>'
+          result += '</li>'
+
+          if (child) {
+            result += `<ul class="aside-category-list child">${child}</ul>`
+          }
+        }
+      })
+    }
+
+    return [result, t]
+  }
+
+  const list = hierarchicalList(limit, 0)
+
+  var moreButton = function () {
+    var moreHtml = ''
+    if (categories.length <= limit) return ''
+    moreHtml += '<li class="aside-category-list-item is-center">'
+    moreHtml += `<a class="aside-category-list-item-more" href="${tagDir}" >`
+    moreHtml += buttonLabel
+    moreHtml += '</a></li>'
+    return moreHtml
+  }
+
+  return `<ul class="aside-category-list">
+            ${list[0]}
+            ${moreButton()}           
+            </ul>`
+})