From 36aa65879054b0cd789904fecd0d6a7e71212d91 Mon Sep 17 00:00:00 2001
From: Ryan Wang <i@ryanc.cc>
Date: Sat, 19 Feb 2022 21:11:50 +0800
Subject: [PATCH] refactor: post category management (#435)

* refactor: post category management

Signed-off-by: Ryan Wang <i@ryanc.cc>

* refactor: post category management

Signed-off-by: Ryan Wang <i@ryanc.cc>

* refactor: tree data

Signed-off-by: Ryan Wang <i@ryanc.cc>

* refactor: tree data

Signed-off-by: Ryan Wang <i@ryanc.cc>
---
 src/views/post/CategoryList.vue               | 217 ++++++------------
 .../post/components/CategorySelectTree.vue    |  51 ++--
 .../post/components/CategoryTreeNode.vue      | 137 +++++++++++
 3 files changed, 233 insertions(+), 172 deletions(-)
 create mode 100644 src/views/post/components/CategoryTreeNode.vue

diff --git a/src/views/post/CategoryList.vue b/src/views/post/CategoryList.vue
index e5176a15..70237756 100644
--- a/src/views/post/CategoryList.vue
+++ b/src/views/post/CategoryList.vue
@@ -1,7 +1,7 @@
 <template>
   <page-view>
     <a-row :gutter="12">
-      <a-col :lg="10" :md="10" :sm="24" :xl="10" :xs="24" class="pb-3">
+      <a-col :lg="8" :md="8" :sm="24" :xl="8" :xs="24" class="pb-3">
         <a-card :bodyStyle="{ padding: '16px' }" :title="title">
           <a-form-model ref="categoryForm" :model="form.model" :rules="form.rules" layout="horizontal">
             <a-form-model-item help="* 页面上所显示的名称" label="名称：" prop="name">
@@ -11,7 +11,7 @@
               <a-input v-model="form.model.slug" />
             </a-form-model-item>
             <a-form-model-item label="上级目录：" prop="parentId">
-              <category-select-tree v-model="form.model.parentId" :categories="table.data" />
+              <category-select-tree :categories="list.data" :category-id.sync="form.model.parentId" />
             </a-form-model-item>
             <a-form-model-item help="* 在分类页面可展示，需要主题支持" label="封面图：" prop="thumbnail">
               <AttachmentInput v-model="form.model.thumbnail" title="选择封面图" />
@@ -51,102 +51,16 @@
           </a-form-model>
         </a-card>
       </a-col>
-      <a-col :lg="14" :md="14" :sm="24" :xl="14" :xs="24" class="pb-3">
+      <a-col :lg="16" :md="16" :sm="24" :xl="16" :xs="24" class="pb-3">
         <a-card :bodyStyle="{ padding: '16px' }" title="分类列表">
-          <!-- Mobile -->
-          <a-list
-            v-if="isMobile()"
-            :dataSource="table.data"
-            :loading="table.loading"
-            :pagination="false"
-            itemLayout="vertical"
-            size="large"
-          >
-            <a-list-item :key="index" slot="renderItem" slot-scope="item, index">
-              <template slot="actions">
-                <span>
-                  <a-icon type="form" />
-                  {{ item.postCount }}
-                </span>
-                <a-dropdown :trigger="['click']" placement="topLeft">
-                  <span>
-                    <a-icon type="bars" />
-                  </span>
-                  <a-menu slot="overlay">
-                    <a-menu-item @click="form.model = item">编辑</a-menu-item>
-                    <a-menu-item>
-                      <a-popconfirm
-                        :title="'你确定要删除【' + item.name + '】分类？'"
-                        cancelText="取消"
-                        okText="确定"
-                        @confirm="handleDeleteCategory(item.id)"
-                      >
-                        删除
-                      </a-popconfirm>
-                    </a-menu-item>
-                  </a-menu>
-                </a-dropdown>
-              </template>
-              <a-list-item-meta>
-                <template slot="description">
-                  {{ item.slug }}
-                </template>
-                <span
-                  slot="title"
-                  style="
-                    max-width: 300px;
-                    display: block;
-                    white-space: nowrap;
-                    overflow: hidden;
-                    text-overflow: ellipsis;
-                  "
-                >
-                  {{ item.name }}{{ item.password ? '（加密）' : '' }}
-                </span></a-list-item-meta
-              >
-              <span>
-                {{ item.description }}
-              </span>
-            </a-list-item>
-          </a-list>
-          <!-- Desktop -->
-          <a-table
-            v-else
-            :columns="table.columns"
-            :dataSource="table.data"
-            :loading="table.loading"
-            :rowKey="record => record.id"
-            :scrollToFirstRowOnChange="true"
-          >
-            <span slot="name" slot-scope="text, record" class="cursor-pointer">
-              {{ record.name }}{{ record.password ? '（加密）' : '' }}
-            </span>
-            <span
-              slot="postCount"
-              slot-scope="text, record"
-              class="cursor-pointer"
-              @click="handleQueryCategoryPosts(record)"
-            >
-              <a-badge
-                :count="record.postCount"
-                :numberStyle="{ backgroundColor: '#00e0ff' }"
-                :overflowCount="9999"
-                :showZero="true"
-              />
-            </span>
-            <span slot="action" slot-scope="text, record">
-              <a-button class="!p-0" type="link" @click="form.model = record"> 编辑 </a-button>
-              <a-divider type="vertical" />
-              <a-popconfirm
-                :title="'你确定要删除【' + record.name + '】分类？'"
-                cancelText="取消"
-                okText="确定"
-                @confirm="handleDeleteCategory(record.id)"
-              >
-                <a-button class="!p-0" type="link">删除</a-button>
-              </a-popconfirm>
-            </span>
-          </a-table>
+          <a-spin :spinning="list.loading">
+            <CategoryTreeNode
+              v-model="list.treeData"
+              @edit="handleEdit"
+              @reload="handleListCategories"
+              @select="handleSelect"
+            />
+          </a-spin>
         </a-card>
       </a-col>
     </a-row>
@@ -154,43 +68,23 @@
 </template>
 
 <script>
+// components
 import { PageView } from '@/layouts'
-import { mixin, mixinDevice } from '@/mixins/mixin.js'
 import CategorySelectTree from './components/CategorySelectTree'
-import apiClient from '@/utils/api-client'
+import CategoryTreeNode from './components/CategoryTreeNode'
 
-const columns = [
-  {
-    title: '名称',
-    ellipsis: true,
-    dataIndex: 'name',
-    scopedSlots: { customRender: 'name' }
-  },
-  {
-    title: '别名',
-    ellipsis: true,
-    dataIndex: 'slug'
-  },
-  {
-    title: '文章数',
-    dataIndex: 'postCount',
-    scopedSlots: { customRender: 'postCount' }
-  },
-  {
-    title: '操作',
-    key: 'action',
-    scopedSlots: { customRender: 'action' }
-  }
-]
+// libs
+import apiClient from '@/utils/api-client'
+import { mixin, mixinDevice } from '@/mixins/mixin.js'
 
 export default {
-  components: { PageView, CategorySelectTree },
+  components: { PageView, CategorySelectTree, CategoryTreeNode },
   mixins: [mixin, mixinDevice],
   data() {
     return {
-      table: {
-        columns,
+      list: {
         data: [],
+        treeData: [],
         loading: false
       },
       form: {
@@ -224,27 +118,58 @@ export default {
     this.handleListCategories()
   },
   methods: {
-    handleListCategories() {
-      this.table.loading = true
-      apiClient.category
-        .list({ sort: [], more: true })
-        .then(response => {
-          this.table.data = response.data
-        })
-        .finally(() => {
-          this.table.loading = false
-        })
+    async handleListCategories() {
+      try {
+        this.list.loading = true
+
+        const { data } = await apiClient.category.list({})
+        this.list.data = data
+        this.list.treeData = this.convertDataToTree(data)
+      } catch (e) {
+        this.$log.error('Failed to get categories', e)
+      } finally {
+        this.list.loading = false
+      }
     },
-    handleDeleteCategory(id) {
-      apiClient.category
-        .delete(id)
-        .then(() => {
-          this.$message.success('删除成功！')
-          this.form.model = {}
-        })
-        .finally(() => {
-          this.handleListCategories()
-        })
+
+    convertDataToTree(categories) {
+      const hashMap = {}
+      const treeData = []
+      categories.forEach(category => (hashMap[category.id] = { ...category, children: [] }))
+      categories.forEach(category => {
+        const current = hashMap[category.id]
+        const parent = hashMap[category.parentId]
+
+        if (current.password) {
+          current.hasPassword = true
+        }
+
+        if (parent && (parent.password || parent.hasPassword)) {
+          current.hasPassword = true
+        }
+
+        if (category.parentId) {
+          hashMap[category.parentId].children.push(current)
+        } else {
+          treeData.push(current)
+        }
+      })
+      return treeData
+    },
+
+    async handleEdit(category) {
+      try {
+        const { data } = await apiClient.category.get(category.id)
+        this.form.model = data
+      } catch (e) {
+        this.$log.error('Failed to get category', e)
+      }
+    },
+
+    handleSelect(category) {
+      this.form.model = {
+        parentId: category.id
+      }
     },
 
     /**
@@ -281,6 +206,7 @@ export default {
         }
       })
     },
+
     handleSavedCallback() {
       if (this.form.errored) {
         this.form.errored = false
@@ -290,6 +216,7 @@ export default {
         _this.handleListCategories()
       }
     },
+
     handleQueryCategoryPosts(category) {
       this.$router.push({ name: 'PostList', query: { categoryId: category.id } })
     }
diff --git a/src/views/post/components/CategorySelectTree.vue b/src/views/post/components/CategorySelectTree.vue
index 87ede33f..599ea92a 100644
--- a/src/views/post/components/CategorySelectTree.vue
+++ b/src/views/post/components/CategorySelectTree.vue
@@ -3,10 +3,9 @@
     :allowClear="true"
     :treeData="categoryTreeData"
     :treeDataSimpleMode="true"
-    :value="categoryIdString"
+    v-model="categoryIdString"
     placeholder="请选择上级目录，默认为顶级目录"
     treeDefaultExpandAll
-    @change="handleSelectionChange"
   >
   </a-tree-select>
 </template>
@@ -14,14 +13,7 @@
 <script>
 export default {
   name: 'CategorySelectTree',
-  model: {
-    prop: 'categoryId',
-    event: 'change'
-  },
   props: {
-    /**
-     * Category id.
-     */
     categoryId: {
       type: Number,
       required: true,
@@ -35,25 +27,30 @@ export default {
   },
   computed: {
     categoryTreeData() {
-      return this.categories.map(category => {
-        return {
-          id: category.id,
-          title: category.name,
-          value: category.id.toString(),
-          pId: category.parentId
-        }
-      })
+      return [
+        {
+          id: 0,
+          title: '根目录',
+          value: '0',
+          pId: -1
+        },
+        ...this.categories.map(category => {
+          return {
+            id: category.id,
+            title: category.name,
+            value: category.id.toString(),
+            pId: category.parentId
+          }
+        })
+      ]
     },
-    categoryIdString() {
-      return this.categoryId.toString()
-    }
-  },
-  methods: {
-    handleSelectionChange(value, label, extra) {
-      this.$log.debug('value: ', value)
-      this.$log.debug('label: ', label)
-      this.$log.debug('extra: ', extra)
-      this.$emit('change', value ? parseInt(value) : 0)
+    categoryIdString: {
+      get() {
+        return this.categoryId.toString()
+      },
+      set(value) {
+        this.$emit('update:categoryId', value ? parseInt(value) : 0)
+      }
     }
   }
 }
diff --git a/src/views/post/components/CategoryTreeNode.vue b/src/views/post/components/CategoryTreeNode.vue
new file mode 100644
index 00000000..de3e0f2d
--- /dev/null
+++ b/src/views/post/components/CategoryTreeNode.vue
@@ -0,0 +1,137 @@
+<template>
+  <a-list item-layout="horizontal">
+    <draggable
+      :list="list"
+      :value="value"
+      class="item-container"
+      handle=".mover"
+      tag="div"
+      v-bind="{
+        animation: 300,
+        group: 'description',
+        ghostClass: 'ghost',
+        chosenClass: 'chosen',
+        dragClass: 'drag',
+        emptyInsertThreshold: 20
+      }"
+      @end="isDragging = false"
+      @input="emitter"
+      @start="isDragging = true"
+    >
+      <transition-group>
+        <div v-for="item in realValue" :key="item.id">
+          <a-list-item class="menu-item">
+            <a-list-item-meta>
+              <span slot="title" class="inline-block font-bold title">
+                <!--                                <a-icon class="cursor-move mover mr-1" type="bars" />-->
+                {{ item.name }}{{ item.hasPassword ? '（加密）' : '' }}
+              </span>
+              <span slot="description" class="inline-block">
+                <a :href="item.fullPath" class="ant-anchor-link-title" target="_blank"> {{ item.fullPath }} </a>
+              </span>
+            </a-list-item-meta>
+            <template #actions>
+              <a-button class="!p-0" type="link" @click="handleSelect(item)">新增</a-button>
+              <a-button class="!p-0" type="link" @click="handleEdit(item)">编辑</a-button>
+              <a-button class="!p-0" type="link" @click="handleDelete(item)">删除</a-button>
+            </template>
+          </a-list-item>
+          <div class="a-list-nested" style="margin-left: 44px">
+            <CategoryTreeNode
+              :list="item.children"
+              @edit="handleEdit"
+              @reload="$emit('reload')"
+              @select="handleSelect"
+            />
+          </div>
+        </div>
+      </transition-group>
+    </draggable>
+  </a-list>
+</template>
+<script>
+// components
+import draggable from 'vuedraggable'
+import apiClient from '@/utils/api-client'
+
+export default {
+  name: 'CategoryTreeNode',
+  components: {
+    draggable
+  },
+  props: {
+    value: {
+      required: false,
+      type: Array,
+      default: null
+    },
+    list: {
+      required: false,
+      type: Array,
+      default: null
+    }
+  },
+  computed: {
+    realValue() {
+      return this.value ? this.value : this.list
+    }
+  },
+  data() {
+    return {
+      isDragging: false
+    }
+  },
+  methods: {
+    emitter(value) {
+      this.$emit('input', value)
+    },
+    handleDelete(item) {
+      const _this = this
+      _this.$confirm({
+        title: '提示',
+        content: `确定要删除名为${item.name}的分类？`,
+        async onOk() {
+          try {
+            await apiClient.category.delete(item.id)
+            _this.$emit('reload')
+          } catch (e) {
+            _this.$log.error('Fail to delete category', e)
+          }
+        }
+      })
+    },
+    handleEdit(item) {
+      this.$emit('edit', item)
+    },
+    handleSelect(item) {
+      this.$emit('select', item)
+    }
+  }
+}
+</script>
+
+<style scoped>
+.ghost {
+  opacity: 0.8;
+  @apply bg-gray-200;
+}
+
+.chosen {
+  opacity: 0.8;
+  @apply bg-gray-200;
+  padding: 0 5px;
+}
+
+.drag {
+  @apply bg-white;
+  padding: 0 5px;
+}
+
+::v-deep .ant-list-item-action {
+  display: none;
+}
+
+::v-deep .menu-item:hover .ant-list-item-action {
+  display: block;
+}
+</style>