<template>
  <div class="app-container">
    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['system:menu:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="info"
          plain
          icon="el-icon-sort"
          size="mini"
          @click="toggleExpandAll"
        >展开/折叠</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table
      v-if="refreshTable"
      v-loading="loading"
      :data="menuList"
      row-key="id"
      :default-expand-all="isExpandAll"
      :tree-props="{children: 'childrens', hasChildren: 'hasChildren'}"
    >
      <el-table-column prop="name" label="菜单名称" :show-overflow-tooltip="true" width="160"></el-table-column>
      <el-table-column prop="icon" label="图标" align="center" width="100">
        <template slot-scope="scope">
          <svg-icon :icon-class="scope.row.icon" />
        </template>
      </el-table-column>
      <el-table-column prop="perms" label="权限标识" :show-overflow-tooltip="true"></el-table-column>
      <el-table-column prop="path" label="组件路径" :show-overflow-tooltip="true"></el-table-column>
      <el-table-column prop="sort" label="排序" width="80"></el-table-column>
      <el-table-column prop="status" label="状态" width="80">
        <template slot-scope="scope">
          <el-switch
            v-model="scope.row.status"
            active-value="A"
            inactive-value="D"
          ></el-switch>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['system:menu:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-plus"
            @click="handleAdd(scope.row)"
            v-hasPermi="['system:menu:add']"
          >新增</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['system:menu:delete']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 添加或修改菜单对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="680px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="100px">
        <el-row>
          <el-col :span="24">
            <el-form-item label="上级菜单">
              <treeselect
                v-model="form.parentId"
                :options="menuOptions"
                :normalizer="normalizer"
                :show-count="true"
                placeholder="选择上级菜单"
              />
            </el-form-item>
          </el-col>
          <el-col :span="24">
            <el-form-item label="菜单类型" prop="isMenu">
              <el-radio-group v-model="form.isMenu">
                <el-radio :label="1">菜单</el-radio>
                <el-radio :label="0">按钮</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
          <el-col :span="24">
            <el-form-item label="菜单图标" prop="icon">
              <el-popover
                placement="bottom-start"
                width="460"
                trigger="click"
                @show="$refs['iconSelect'].reset()"
              >
                <IconSelect ref="iconSelect" @selected="selected" />
                <el-input slot="reference" v-model="form.icon" placeholder="点击选择图标" readonly>
                  <svg-icon
                    v-if="form.icon"
                    slot="prefix"
                    :icon-class="form.icon"
                    class="el-input__icon"
                    style="height: 32px;width: 16px;"
                  />
                  <i v-else slot="prefix" class="el-icon-search el-input__icon" />
                </el-input>
              </el-popover>
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="菜单名称" prop="name">
              <el-input v-model="form.name" placeholder="请输入菜单名称" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="显示排序" prop="sort">
              <el-input-number v-model="form.sort" :min="0" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item prop="path">
              <span slot="label">
                <el-tooltip content="访问的组件路径，如：`system/account/index`，默认在`views`目录下" placement="top">
                <i class="el-icon-question"></i>
                </el-tooltip>
                组件路径
              </span>
              <el-input v-model="form.path" placeholder="请输入组件路径" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item>
              <span slot="label">
                <el-tooltip content="选择停用则路由将不会出现在侧边栏，也不能被访问" placement="top">
                <i class="el-icon-question"></i>
                </el-tooltip>
                菜单状态
              </span>
              <el-radio-group v-model="form.status">
                <el-radio key="A" label="A">启用</el-radio>
                <el-radio key="D" label="D">禁用</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
        </el-row>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listMenu, getMenu, delMenu, addMenu, updateMenu } from "@/api/system/menu";
import Treeselect from "@riophae/vue-treeselect";
import "@riophae/vue-treeselect/dist/vue-treeselect.css";
import IconSelect from "@/components/IconSelect";

export default {
  name: "Menu",
  components: { Treeselect, IconSelect },
  data() {
    return {
      // 遮罩层
      loading: true,
      // 显示搜索条件
      showSearch: true,
      // 菜单表格树数据
      menuList: [],
      // 菜单树选项
      menuOptions: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 是否展开，默认全部折叠
      isExpandAll: false,
      // 重新渲染表格状态
      refreshTable: true,
      // 查询参数
      queryParams: {
        name: undefined,
        visible: undefined
      },
      // 表单参数
      form: { id : '' },
      // 表单校验
      rules: {
        name: [
          { required: true, message: "菜单名称不能为空", trigger: "blur" }
        ],
        sort: [
          { required: true, message: "菜单顺序不能为空", trigger: "blur" }
        ],
        path: [
          { required: true, message: "路由地址不能为空", trigger: "blur" }
        ]
      }
    };
  },
  created() {
    this.getList();
  },
  methods: {
    // 选择图标
    selected(name) {
      this.form.icon = name;
    },
    // 查询菜单列表
    getList() {
      this.loading = true;
      listMenu(this.queryParams).then(response => {
        this.menuList = this.handleTree(response.data, "id", "pId", "childrens");
        this.loading = false;
      });
    },
    // 转换菜单数据结构
    normalizer(node) {
      if (node.childrens && !node.childrens.length) {
        delete node.childrens;
      }
      return {
        id: node.id,
        label: node.name,
        children: node.childrens
      };
    },
    // 查询菜单下拉树结构
    getTreeSelect() {
      listMenu().then(response => {
        this.menuOptions = [];
        const menu = { id: 0, name: '根目录', childrens: [] };
        menu.childrens = this.handleTree(response.data, "id", "pId", "childrens");
        this.menuOptions.push(menu);
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        id: undefined,
        parentId: 0,
        name: '',
        icon: '',
        isMenu: 1,
        sort: '',
        visible: "0",
        status: "A"
      };
      this.resetForm("form");
    },
    // 搜索按钮操作
    handleQuery() {
      this.getList();
    },
    // 重置按钮操作
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 新增按钮操作
    handleAdd(row) {
      this.reset();
      this.getTreeSelect();
      if (row != null && row.id) {
          this.form.parentId = row.id;
      } else {
          this.form.parentId = 0;
      }
      this.open = true;
      this.title = "添加菜单";
    },
    // 展开/折叠操作
    toggleExpandAll() {
      this.refreshTable = false;
      this.isExpandAll = !this.isExpandAll;
      this.$nextTick(() => {
          this.refreshTable = true;
      });
    },
    // 修改按钮操作
    handleUpdate(row) {
      this.reset();
      this.getTreeSelect();
      getMenu(row.id).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改菜单";
      });
    },
    // 提交按钮
    submitForm: function() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.id) {
            updateMenu(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addMenu(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    // 删除按钮操作
    handleDelete(row) {
      this.$modal.confirm('是否确认删除名称为"' + row.name + '"的数据项？').then(function() {
        return delMenu(row.id);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    }
  }
};
</script>
