<script>
import {Delete, Edit, Search, User, Document} from "@element-plus/icons-vue";
import {mapState, mapActions, mapMutations} from "vuex";
import ZooUserFormDialog from "@/components/ZooUserFormDialog.vue";
import {copy, fuzzyMatching, splitKeyWords, showPassword, hidePassword, refreshData} from "@/utils/common.js";
import request, {frontendUser, frontendUsers} from "@/utils/request.js";


export default {
  name: "ZooUser",
  components: {ZooUserFormDialog},
  data() {
    return {
      //表格分页显示的数据
      pagesData: [],
      pageSize: 20,//每页有多少条数据
      currentPage: 1,//当前页

      //搜索框的输入
      searchInput: {
        option: '',
        keyword: ''
      },

      // 控制弹窗的属性
      dialog: {
        dialogData: {},//弹窗表单数据
        addDialogVisible: false,//添加弹窗
        editDialogVisible: false,//编辑弹窗
        detailDialogVisible: false,//详情弹窗
      },
    }
  },
  computed: {
    //返回图标
    // region
    Search() {
      return Search
    },
    User() {
      return User
    },
    Delete() {
      return Delete
    },
    Edit() {
      return Edit
    },
    Document() {
      return Document
    },

    // endregion
    ...mapState(["users", 'usersTableData'])
  },
  watch: {
    // 搜索框存在输入，自动调用搜索(刷新数据包含搜索)
    searchInput: {
      deep: true,
      handler(val) {
        this.refresh();
      }
    }
  },
  methods: {
    hidePassword,
    showPassword,
    ...mapActions(['getUsers']),
    ...mapMutations(['updateUsers','updateUsersTableData']),

    //显示详情弹窗
    showDetail(data) {
      console.log('显示详情', data)

      //从后端获取需要查询的数据，防止数据前后不一致
      request.queryUserRequest(data.username).then(response => {
        if (response.data.data === null) {
          this.refresh()
          return ElMessage({
            message: '该用户不存在，请刷新',
            type: 'warning',
          })
        }else {
          this.dialog.dialogData = frontendUser(response.data.data)
          // 显示编辑弹窗
          this.dialog.detailDialogVisible = true
        }
      })
    },

    // 显示编辑弹窗
    showEdit(data) {
      console.log('编辑弹窗', data)

      //从后端获取需要查询的数据，防止数据前后不一致
      request.queryUserRequest(data.username).then(response => {
        if (response.data.data === null) {
          this.refresh()
          return ElMessage({
            message: '该用户不存在，请刷新',
            type: 'warning',
          })
        }else {
          this.dialog.dialogData = frontendUser(response.data.data)
          // 显示编辑弹窗
          this.dialog.editDialogVisible = true
        }
      })
    },

    edit(data) {
      console.log('编辑', data)

      //判断表单是否为空
      if (this.isEmpty(data)) {
        return;
      }

      //这里将数据传给后端进行数据更新
      //从后端获取需要查询的数据，防止数据前后不一致
      request.queryUserRequest(data.username).then(response => {
        if (response.data.data === null) {
          this.refresh()
          this.dialog.editDialogVisible = false;
          return ElMessage({
            message: '该用户不存在，请刷新',
            type: 'warning',
          })
        }else {
          request.updateUserRequest(data).then(response => {
            if (response.data.code===1){
              // 编辑成功
              // 刷新数据
              this.refresh()

              this.dialog.editDialogVisible = false//关闭窗口

              return ElMessage({
                message: '编辑成功',
                type: 'success',
              })
            }else {
              return ElMessage({
                message: '编辑失败',
                type: 'warning',
              })
            }
          })
        }
      })
    },

    delete_(data) {
      console.log('删除', data)

      return ElMessageBox.confirm(
          '该操作不可撤销，是否继续？',
          '删除用户：' + data.username + '（' + data.id + '）',
          {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning',
          }
      ).then(() => {
        //从后端获取需要查询的数据，防止数据前后不一致
        request.queryUserRequest(data.username).then(response => {
          if (response.data.data===null){
            this.refresh();
            return ElMessage({
              message: '该用户不存在，请刷新',
              type: 'warning',
            })
          }else {
            //进行删除操作
            request.deleteUserRequest(data.id).then(response => {
              if (response.data.code===1){
                // 刷新数据
                this.refresh()

                //返回提示
                return ElMessage({
                  message: '删除成功',
                  type: 'success',
                })
              }else {
                return ElMessage({
                  message: '删除失败',
                  type: 'warning',
                })
              }
            })
          }
        })
      }).catch(() => {
        ElMessage({
          type: 'info',
          message: '取消删除',
        })
      })
    },

    add(data) {
      console.log('添加', data)

      //验证是否为空
      if (this.isEmpty(data)) {
        return;
      }

      //先查询用户是否存在
      request.queryUserRequest(data.username).then(response => {
        if (response.data.data!==null){
          return ElMessage({
            message: '用户名重复',
            type: 'warning',
          })
        }else {
          //添加成功
          request.addUserRequest(data).then(response => {
            if (response.data.code===1){
              // 刷新数据
              this.refresh()

              this.dialog.addDialogVisible = false//添加成功关闭窗口

              return ElMessage({
                message: '添加成功',
                type: 'success',
              })
            }else {
              return ElMessage({
                message: '添加失败',
                type: 'warning',
              })
            }
          })
        }
      })
    },

    // 判断表单是否为空
    isEmpty(form) {
      if (!form.username || !form.password) {
        //返回提示
        return ElMessage({
          message: '用户名和密码不能为空',
          type: 'warning',
        })
      }
    },

    search() {
      console.log('搜索', this.searchInput)

      let searchResult = []//搜索结果数组

      //第一步匹配搜索选项
      if (typeof this.searchInput.option === 'number') {
        this.users.forEach(e => {
          if (e.auth === this.searchInput.option) {
            searchResult.push(copy(e))//如果符合特定权限，则添加到搜索结果
          }
        })
      } else { //如果没有选择特定用户身份，代表所有数据都需要参加到下一轮的模糊搜索
        searchResult = copy(this.users)
      }

      let searchResult2 = []
      let keyset = splitKeyWords(this.searchInput.keyword)//切割关键字

      //第二步进行模糊搜索
      searchResult.forEach(e => {
        //如果该对象能匹配上所有关键字，则添加到结果
        // console.log('开始进行模糊匹配,对象、关键字集合分别为',e,keyset)
        let is = fuzzyMatching(e, keyset);
        if (is) {
          searchResult2.push(e)
        }
        // console.log('结束模糊匹配，结果为',e,keyset,is)
      })
      searchResult = searchResult2

      this.updateUsersTableData(searchResult)
      // this.getPagesData()
    },

    //当前页切换时触发
    handleCurrentChange(val) {
      console.log('分页被切换',val)
      this.currentPage = val
      this.getPagesData()
    },

    getPagesData() {
      console.log('获取分页数据')
      const start = (this.currentPage - 1) * this.pageSize
      const end = start + this.pageSize
      this.pagesData = this.usersTableData.slice(start, end)
    },

    //刷新数据的方法
    refresh(){
      console.log('刷新数据')

      //先拉取一遍数据
      request.queryUserRequest().then(response => {
        if (response.data.code === 1) {
          this.updateUsers(frontendUsers(response.data.data))
        }
        //可能输入了搜索关键字，故执行一次搜索
        this.search()

        //获取结果的分页
        this.getPagesData()
      })
    }
  },
  mounted() {
    this.refresh()
    refreshData();
  },
}
</script>

<template>
  <div id="user-root">
    <!--    头部-->
    <div class="select">
      <div class="left">
        <el-button type="primary" :icon="User" @click="dialog.addDialogVisible = true">创建用户</el-button>
      </div>
      <div class="right">
        <el-input
            v-model="searchInput.keyword"
            style="width: 500px"
            placeholder="搜索用户 空格隔开关键字"
        >
          <template #prepend>
            <el-select v-model="searchInput.option" placeholder="身份" style="width: 90px">
              <el-option label="不选择" value=""/>
              <el-option label="管理员" :value="0"/>
              <el-option label="饲养员" :value="1"/>
              <el-option label="兽医" :value="2"/>
            </el-select>
          </template>
          <template #append>
            <el-button :icon="Search" @click="refresh()"/>
          </template>
        </el-input>
      </div>
    </div>

    <!--    数据-->
    <div class="table">
      <el-table :data="pagesData" style="height: 100%" border stripe :row-style="{height: '40px'}" :cell-style="{padding:'0'}">
        <el-table-column fixed prop="id" label="用户ID" width="70"/>
        <el-table-column fixed prop="username" label="用户名" width="150"/>
        <el-table-column prop="password" label="密码" width="150">
          <template #default="scope">
            <div @mouseover="showPassword($event,scope.row.password)" @mouseleave="hidePassword($event)">••••••••</div>
          </template>
        </el-table-column>
        <el-table-column prop="auth" label="身份" width="700">
          <template #default="scope">
            <span v-if="scope.row.auth===0" style="color: #409EFF">管理员</span>
            <span v-else-if="scope.row.auth===1" style="color: #67C23A">饲养员</span>
            <span v-else-if="scope.row.auth===2" style="color: #E6A23C">兽医</span>
            <span v-else>未知</span>
          </template>
        </el-table-column>
        <el-table-column fixed="right" label="操作" width="190">
          <template #default="scope">
            <el-button link type="primary" size="small" :icon="Document" @click="showDetail(scope.row)">
              详情
            </el-button>
            <el-button link type="primary" size="small" :icon="Edit" @click="showEdit(scope.row)">
              编辑
            </el-button>
            <el-button link type="danger" size="small" :icon="Delete" @click="delete_(scope.row)">
              删除
            </el-button>
          </template>
        </el-table-column>
      </el-table>
    </div>

<!--      分页-->
    <div class="pager relative">
      <div class="center">
        <el-pagination background layout="total, prev, pager, next, jumper" :total="usersTableData.length"
                       :page-size="pageSize" small @current-change="handleCurrentChange"/>
      </div>
    </div>
  </div>



  <!--  添加用户对话框-->
  <el-dialog v-model="dialog.addDialogVisible" title="添加用户" width="400" align-center draggable overflow
             destroy-on-close>
    <ZooUserFormDialog>
      <template #default="scope">
        <el-button @click="dialog.addDialogVisible = false">
          取消
        </el-button>
        <el-button type="primary" @click="add(scope.form)">
          添加
        </el-button>
      </template>
    </ZooUserFormDialog>
  </el-dialog>

  <!--  编辑用户对话框-->
  <el-dialog v-model="dialog.editDialogVisible" title="编辑用户" width="400" align-center draggable overflow
             destroy-on-close>
    <ZooUserFormDialog :data="dialog.dialogData" edit>
      <template #default="scope">
        <el-button @click="dialog.editDialogVisible = false">
          取消
        </el-button>
        <el-button type="primary" @click="edit(scope.form)">
          修改
        </el-button>
      </template>
    </ZooUserFormDialog>
  </el-dialog>

  <!--  用户详情对话框-->
  <el-dialog v-model="dialog.detailDialogVisible" title="查询用户" width="400" align-center draggable overflow
             destroy-on-close>
    <ZooUserFormDialog :data="dialog.dialogData" detail>
      <template #default="scope">
        <el-button @click="dialog.detailDialogVisible = false">
          关闭
        </el-button>
      </template>
    </ZooUserFormDialog>
  </el-dialog>
</template>

<style scoped>
/*.table {*/
/*  !*width: 1300px;*!*/
/*  height: 546px;*/
/*  margin: 0 30px;*/
/*}*/

/*.left {*/
/*  margin-left: 30px;*/
/*}*/

/*.right {*/
/*  margin-right: 30px;*/
/*}*/

/*.select {*/
/*  width: 100%;*/
/*  height: 60px;*/
/*  line-height: 60px;*/
/*}*/
</style>