<template>
  <div class="app-container">
    <!--工具栏-->
    <div class="head-container">
      <div v-if="crud.props.searchToggle">
        <!-- 搜索 -->
        <el-input
          v-model="query.blurry"
          size="mini"
          clearable
          placeholder="输入名称"
          style="width: 200px;"
          class="filter-item"
          @keyup.enter.native="crud.toQuery"
        />
        <rrOperation />
      </div>
      <crudOperation :permission="permission" />
    </div>
    <!-- 表单渲染 -->
    <el-dialog
      append-to-body
      :close-on-click-modal="false"
      :before-close="crud.cancelCU"
      :visible.sync="crud.status.cu > 0"
      :title="crud.status.title"
      width="520px"
    >
      <el-form ref="form" :inline="true" :model="form" :rules="rules" size="mini" label-width="80px">
        <el-form-item label="角色名称" prop="name">
          <el-input v-model="form.name" style="width: 380px;" />
        </el-form-item>
        <el-form-item label="备注" prop="description">
          <el-input v-model="form.description" style="width: 380px;" rows="2" type="textarea" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="text" @click="crud.cancelCU">取消</el-button>
        <el-button :loading="crud.status.cu === 2" type="primary" @click="crud.submitCU">确认</el-button>
      </div>
    </el-dialog>
    <el-row :gutter="15">
      <!--角色管理-->
      <el-col :span="12" style="margin-bottom: 10px">
        <el-card class="box-card" shadow="never">
          <div slot="header" class="clearfix">
            <span class="role-span">角色列表</span>
          </div>
          <el-table
            ref="table"
            v-loading="crud.loading"
            highlight-current-row
            style="width: 100%;"
            :data="crud.data"
            @selection-change="crud.selectionChangeHandler"
            @current-change="handleCurrentChange"
          >
            <el-table-column type="selection" width="55" />
            <el-table-column prop="name" label="名称" min-width="100" show-overflow-tooltip />
            <el-table-column show-overflow-tooltip prop="description" label="描述" />
            <el-table-column show-overflow-tooltip width="135px" prop="createTime" label="创建日期">
              <template slot-scope="scope">
                <span>{{ parseTime(scope.row.createTime) }}</span>
              </template>
            </el-table-column>
            <el-table-column
              v-permission="['admin','roles:edit','roles:del']"
              label="操作"
              width="130px"
              align="center"
              fixed="right"
            >
              <template slot-scope="scope">
                <udOperation
                  :data="scope.row"
                  :permission="permission"
                />
              </template>
            </el-table-column>
          </el-table>
          <!--分页组件-->
          <pagination />
        </el-card>
      </el-col>
      <!-- 菜单授权 -->
      <el-col :span="12">
        <el-card class="box-card" shadow="never">
          <div slot="header" class="clearfix">
            <el-tooltip class="item" effect="dark" content="选择指定角色分配菜单" placement="top">
              <span class="role-span">菜单分配</span>
            </el-tooltip>
            <el-button
              v-permission="['admin','roles:edit']"
              :disabled="!showButton"
              :loading="menuLoading"
              icon="el-icon-check"
              size="mini"
              style="float: right; padding: 6px 10px"
              type="primary"
              @click="saveMenu"
            >保存
            </el-button>
          </div>

          <el-tree
            ref="menu"
            lazy
            :data="menus"
            :default-checked-keys="menuIds"
            :load="getMenuDatas"
            :props="defaultProps"
            check-strictly
            accordion
            show-checkbox
            node-key="menu_id"
            @check="menuChange"
          />
        </el-card>
      </el-col>
    </el-row>
  </div>
</template>

<script>
import crudRoles from '@/api/system/role'
import crudMenu from '@/api/system/menu'
import { getChild, getMenusTree } from '@/api/system/menu'
import CRUD, { crud, form, header, presenter } from '@crud/crud'
import rrOperation from '@crud/RR.operation'
import crudOperation from '@crud/CRUD.operation'
import udOperation from '@crud/UD.operation'
import pagination from '@crud/Pagination'
import DateRangePicker from '@/components/DateRangePicker'

const defaultForm = { id: null, name: null, description: null }
export default {
  name: 'Role',
  components: { pagination, crudOperation, rrOperation, udOperation, DateRangePicker, crudMenu },
  cruds() {
    return CRUD({ title: '角色', url: 'api/roles', crudMethod: { ...crudRoles }})
  },
  mixins: [presenter(), header(), form(defaultForm), crud()],
  data() {
    return {
      defaultProps: { children: 'children', label: 'title', isLeaf: 'leaf' },
      currentId: 0, menuLoading: false, showButton: false,
      menus: [], menuIds: [], // 多选时使用
      permission: {
        add: ['admin', 'roles:add'],
        edit: ['admin', 'roles:edit'],
        del: ['admin', 'roles:del']
      },
      rules: {
        name: [
          { required: true, message: '请输入名称', trigger: 'blur' }
        ],
        permission: [
          { required: true, message: '请输入权限', trigger: 'blur' }
        ]
      }
    }
  },
  created() {
  },
  methods: {
    getMenuDatas(node, resolve) {
      setTimeout(() => {
        getMenusTree(node.data.menu_id ? node.data.menu_id : 0).then(res => {
          resolve(res)
        })
      }, 100)
    },
    getMenusByRole(val) {
      if (this.currentId && val[0] && val[1]) {
        const param = {
          role_id: this.currentId,
          system_type: val[0],
          category: val[1]
        }

        const _this = this
        crudMenu.getMenusByRole(param).then(res => {
          _this.menus = res

          // 初始化默认选中的key
          _this.menuIds = []
          _this.menus.forEach(function(data) {
            _this.menuIds.push(data.menu_id)
          })
        })
      }
    },
    [CRUD.HOOK.afterRefresh]() {
      this.$refs.menu.setCheckedKeys([])
    },
    // 提交前做的操作
    [CRUD.HOOK.afterValidateCU](crud) {
      return true
    },
    // 触发单选
    handleCurrentChange(val) {
      if (val) {
        const _this = this
        // 清空菜单的选中
        this.$refs.menu.setCheckedKeys([])
        // 保存当前的角色id
        this.currentId = val.role_id
        // 初始化默认选中的key
        this.menuIds = []
        val.menus.forEach(function(data) {
          _this.menuIds.push(data.menu_id)
        })
        this.showButton = true
      }
    },
    menuChange(menu) {
      // 获取该节点的所有子节点，id 包含自身
      getChild(menu.menu_id).then(childIds => {
        // 判断是否在 menuIds 中，如果存在则删除，否则添加
        if (this.menuIds.indexOf(menu.menu_id) !== -1) {
          for (let i = 0; i < childIds.length; i++) {
            const index = this.menuIds.indexOf(childIds[i])
            if (index !== -1) {
              this.menuIds.splice(index, 1)
            }
          }
        } else {
          for (let i = 0; i < childIds.length; i++) {
            const index = this.menuIds.indexOf(childIds[i])
            if (index === -1) {
              this.menuIds.push(childIds[i])
            }
          }
        }
        this.$refs.menu.setCheckedKeys(this.menuIds)
      })
    },
    // 保存菜单
    saveMenu() {
      this.menuLoading = true
      const role = { id: this.currentId, menus: [] }
      // 得到已选中的 key 值
      this.menuIds.forEach(function(menu_id) {
        const menu = { menu_id: menu_id }
        role.menus.push(menu)
      })
      crudRoles.editMenu(role).then(() => {
        this.crud.notify('保存成功', CRUD.NOTIFICATION_TYPE.SUCCESS)
        this.menuLoading = false
        this.update()
      }).catch(err => {
        this.menuLoading = false
        console.log(err.response.data.message)
      })
    },
    // 改变数据
    update() {
      // 无刷新更新 表格数据
      crudRoles.get(this.currentId).then(res => {
        for (let i = 0; i < this.crud.data.length; i++) {
          if (res.menu_id === this.crud.data[i].menu_id) {
            this.crud.data[i] = res
            break
          }
        }
      })
    }
  }
}
</script>

<style rel="stylesheet/scss" lang="scss">
.role-span {
  font-weight: bold;
  color: #303133;
  font-size: 15px;
}
</style>

<style rel="stylesheet/scss" lang="scss" scoped>
::v-deep .el-input-number .el-input__inner {
  text-align: left;
}

::v-deep .el-card__header {
  padding: 5px 0 5px 10px;
  background-color: #f8f8f9;
}

::v-deep .el-card__body {
  padding: 10px 0 10px 0;
}
</style>
