<template>
  <div class="app-container">

    <el-card class="operate-container" shadow="never">
      <div style="margin-top: 15px">
        <el-form :inline="true" size="small" label-width="140px">
          <el-form-item label="输入搜索：">
            <el-input v-model="tempSearchObj.username" style="width: 203px" placeholder="用户名" />
          </el-form-item>

          <el-button type="primary" icon="el-icon-search" @click="getUsers()">查询</el-button>
          <el-button type="default" @click="resetSearch()">清空</el-button>
        </el-form>
      </div>
    </el-card>

    <!-- 工具条 -->
    <el-card class="operate-container" shadow="never">
      <i class="el-icon-tickets" style="margin-top: 5px" />
      <span style="margin-top: 5px">数据列表</span>
      <el-button class="btn-add" size="mini" @click="showAddUser">添 加</el-button>
      <el-button
        class="btn-add"
        size="mini"
        :disabled="selectedIds.length===0"
        style="margin: 0 10px;"
        @click="revomveUsers"
      >批量删除
      </el-button>
    </el-card>

    <!-- banner列表 -->
    <el-table
      v-loading="listLoading"
      :data="users"
      stripe
      border
      style="width: 100%;margin-top: 10px;"
      @selection-change="handleSelectionChange"
    >

      <el-table-column
        type="selection"
        width="55"
      />

      <el-table-column
        type="index"
        label="序号"
        width="80"
        align="center"
      />

      <el-table-column prop="username" label="用户名" width="120" />
      <el-table-column prop="name" label="用户名称" width="120" />
      <el-table-column prop="createTime" label="创建时间" width="180" />
      <el-table-column prop="updateTime" label="更新时间" width="180" />

      <el-table-column label="操作" width="220" align="center">
        <!--        <template slot-scope="{row}">-->
        <!--          <HintButton type="info" size="mini" icon="el-icon-user-solid" title="分配角色"-->
        <!--            @click="showAssignRole(row)" v-if="$hasBP('btn.User.assgin')" />-->
        <!--          <HintButton type="primary" size="mini" icon="el-icon-edit" title="修改用户"-->
        <!--            @click="showUpdateUser(row)" v-if="$hasBP('btn.User.update')"/>-->
        <!--          <el-popconfirm :title="`确定删除 ${row.username} 吗?`" @onConfirm="removeUser(row.id)">-->
        <!--            <HintButton style="margin-left:10px" slot="reference" type="danger" size="mini" icon="el-icon-delete"-->
        <!--              title="删除用户" v-if="$hasBP('btn.User.remove')"/>-->
        <!--          </el-popconfirm>-->
        <!--        </template>-->
        <template slot-scope="scope">
          <el-button type="text" size="mini" @click="showAssignRole(scope.row)">分配角色</el-button>
          <el-button type="text" size="mini" @click="showUpdateUser(scope.row)">修改</el-button>
          <el-button type="text" size="mini" @click="removeUser(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <el-pagination
      :current-page="page"
      :total="total"
      :page-size="limit"
      :page-sizes="[5, 10, 20, 30, 40, 50, 100]"
      style="padding: 20px 0;"
      layout="prev, pager, next, jumper, ->, sizes, total"
      @current-change="getUsers"
      @size-change="handleSizeChange"
    />

    <el-dialog :title="user.id ? '修改用户' : '添加用户'" :visible.sync="dialogUserVisible">
      <el-form ref="userForm" :model="user" :rules="userRules" label-width="120px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="user.username" />
        </el-form-item>
        <el-form-item label="用户名称">
          <el-input v-model="user.name" />
        </el-form-item>

        <el-form-item v-if="!user.id" label="用户密码" prop="password">
          <el-input v-model="user.password" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="cancel">取 消</el-button>
        <el-button :loading="loading" type="primary" @click="addOrUpdate">确 定</el-button>
      </div>
    </el-dialog>

    <el-dialog title="设置角色" :visible.sync="dialogRoleVisible" :before-close="resetRoleData">
      <el-form label-width="80px">
        <el-form-item label="用户名">
          <el-input disabled :value="user.username" />
        </el-form-item>

        <el-form-item label="角色列表">
          <el-checkbox v-model="checkAll" :indeterminate="isIndeterminate" @change="handleCheckAllChange">全选
          </el-checkbox>
          <div style="margin: 15px 0;" />
          <el-checkbox-group v-model="userRoleIds" @change="handleCheckedChange">
            <el-checkbox v-for="role in allRoles" :key="role.id" :label="role.id">{{ role.roleName }}</el-checkbox>
          </el-checkbox-group>
        </el-form-item>
      </el-form>

      <div slot="footer">
        <el-button :loading="loading" type="primary" @click="assignRole">保存</el-button>
        <el-button @click="resetRoleData">取消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import cloneDeep from 'lodash/cloneDeep'

export default {
  name: 'AclUserList',

  data() {
    return {
      listLoading: false, // 是否显示列表加载的提示
      searchObj: { // 包含请求搜索条件数据的对象
        username: ''
      },
      tempSearchObj: { // 收集搜索条件输入的对象
        username: ''
      },
      selectedIds: [], // 所有选择的user的id的数组
      users: [], // 当前页的用户列表
      page: 1, // 当前页码
      limit: 5, // 每页数量
      total: 0, // 总数量
      user: {}, // 当前要操作的user
      dialogUserVisible: false, // 是否显示用户添加/修改的dialog
      userRules: { // 用户添加/修改表单的校验规则
        username: [
          { required: true, message: '用户名必须输入' },
          { min: 4, message: '用户名不能小于4位' }
        ],
        password: [
          { required: true, validator: this.validatePassword }
        ]
      },
      loading: false, // 是否正在提交请求中
      dialogRoleVisible: false, // 是否显示角色Dialog
      allRoles: [], // 所有角色列表
      userRoleIds: [], // 用户的角色ID的列表
      isIndeterminate: false, // 是否是不确定的
      checkAll: false // 是否全选
    }
  },

  created() {
    this.getUsers()
  },

  methods: {
    /*
    显示指定角色的界面
    */
    showAssignRole(user) {
      this.user = user
      this.dialogRoleVisible = true
      this.getRoles()
    },

    /*
    全选勾选状态发生改变的监听
    */
    handleCheckAllChange(value) { // value 当前勾选状态true/false
      // 如果当前全选, userRoleIds就是所有角色id的数组, 否则是空数组
      this.userRoleIds = value ? this.allRoles.map(item => item.id) : []
      // 如果当前不是全选也不全不选时, 指定为false
      this.isIndeterminate = false
    },

    /*
    异步获取用户的角色列表
    */
    async getRoles() {
      const result = await this.$API.user.getRoles(this.user.id)
      const { allRolesList, assignRoles } = result.data
      this.allRoles = allRolesList
      this.userRoleIds = assignRoles.map(item => item.id)
      this.checkAll = allRolesList.length === assignRoles.length
      this.isIndeterminate = assignRoles.length > 0 && assignRoles.length < allRolesList.length
    },

    /*
    角色列表选中项发生改变的监听
    */
    handleCheckedChange(value) {
      const { userRoleIds, allRoles } = this
      this.checkAll = userRoleIds.length === allRoles.length && allRoles.length > 0
      this.isIndeterminate = userRoleIds.length > 0 && userRoleIds.length < allRoles.length
    },

    /*
    请求给用户进行角色授权
    */
    async assignRole() {
      const userId = this.user.id
      const roleIds = this.userRoleIds.join(',')
      this.loading = true
      const result = await this.$API.user.assignRoles(userId, roleIds)
      this.loading = false
      this.$message.success(result.message || '分配角色成功')
      this.resetRoleData()

      // console.log(this.$store.getters.name, this.user)
      if (this.$store.getters.name === this.user.username) {
        window.location.reload()
      }
    },

    /*
    重置用户角色的数据
    */
    resetRoleData() {
      this.dialogRoleVisible = false
      this.allRoles = []
      this.userRoleIds = []
      this.isIndeterminate = false
      this.checkAll = false
    },

    /*
    自定义密码校验
    */
    validatePassword(rule, value, callback) {
      if (!value) {
        callback('密码必须输入')
      } else if (!value || value.length < 6) {
        callback('密码不能小于6位')
      } else {
        callback()
      }
    },
    /*
    根据输入进行搜索
    */
    search() {
      this.searchObj = { ...this.tempSearchObj }
      this.getUsers()
    },

    /*
    重置输入后搜索
    */
    resetSearch() {
      this.searchObj = {
        username: ''
      }
      this.tempSearchObj = {
        username: ''
      }
      this.getUsers()
    },

    /*
    显示添加用户的界面
    */
    showAddUser() {
      this.user = {}
      this.dialogUserVisible = true

      this.$nextTick(() => this.$refs.userForm.clearValidate())
    },

    /*
    删除所有选中的用户
    */
    revomveUsers() {
      this.$confirm('确定删除吗?').then(async() => {
        await this.$API.user.removeUsers(this.selectedIds)
        this.$message.success('删除成功')
        this.getUsers()
      }).catch(() => {
        this.$message.info('取消删除')
      })
    },

    /*
    列表选中状态发生改变的监听回调
    */
    handleSelectionChange(selection) {
      this.selectedIds = selection.map(item => item.id)
    },

    /*
    显示更新用户的界面
    */
    showUpdateUser(user) {
      this.user = cloneDeep(user)
      this.dialogUserVisible = true
    },

    /*
    删除某个用户
    */
    async removeUser(id) {
      await this.$API.user.removeById(id)
      this.$message.success('删除成功')
      this.getUsers(this.users.length === 1 ? this.page - 1 : this.page)
    },

    /*
    获取分页列表
    */
    async getUsers(page = 1) {
      this.page = page
      const { limit, tempSearchObj } = this
      this.listLoading = true
      const result = await this.$API.user.getPageList(page, limit, tempSearchObj)
      this.listLoading = false
      const { records, total } = result.data
      this.users = records
      this.total = total - 1
      this.selectedIds = []
    },

    /*
    处理pageSize发生改变的监听回调
    */
    handleSizeChange(pageSize) {
      this.limit = pageSize
      this.getUsers()
    },

    /*
    取消用户的保存或更新
    */
    cancel() {
      this.dialogUserVisible = false
      this.user = {}
    },

    /*
    保存或者更新用户
    */
    addOrUpdate() {
      this.$refs.userForm.validate(valid => {
        if (valid) {
          const { user } = this
          this.loading = true
          this.$API.user[user.id ? 'update' : 'add'](user).then((result) => {
            this.loading = false
            this.$message.success('保存成功!')
            this.getUsers(user.id ? this.page : 1)
            this.user = {}
            this.dialogUserVisible = false
          })
        }
      })
    }
  }
}
</script>
