<template>
    <div class="app-container">
      <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
        <el-form-item label="城市" prop="cityId">
          <el-input
            v-model="queryParams.cityId"
            placeholder="请输入城市"
            clearable
            @keyup.enter.native="handleQuery"
          />
        </el-form-item>
        <el-form-item label="文章标题" prop="title">
          <el-input
            v-model="queryParams.title"
            placeholder="请输入文章标题"
            clearable
            @keyup.enter.native="handleQuery"
          />
        </el-form-item>
        <el-form-item label="轮播图" prop="cover">
          <el-input
            v-model="queryParams.cover"
            placeholder="请输入轮播图"
            clearable
            @keyup.enter.native="handleQuery"
          />
        </el-form-item>
        <el-form-item label="作者" prop="author">
          <el-input
            v-model="queryParams.author"
            placeholder="请输入作者"
            clearable
            @keyup.enter.native="handleQuery"
          />
        </el-form-item>
        <el-form-item>
          <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
          <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
        </el-form-item>
      </el-form>
  
      <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:article:add']"
          >新增</el-button>
        </el-col>
        <el-col :span="1.5">
          <el-button
            type="success"
            plain
            icon="el-icon-edit"
            size="mini"
            :disabled="single"
            @click="handleUpdate"
            v-hasPermi="['system:article:edit']"
          >修改</el-button>
        </el-col>
        <el-col :span="1.5">
          <el-button
            type="danger"
            plain
            icon="el-icon-delete"
            size="mini"
            :disabled="multiple"
            @click="handleDelete"
            v-hasPermi="['system:article:remove']"
          >删除</el-button>
        </el-col>
        <el-col :span="1.5">
          <el-button
            type="warning"
            plain
            icon="el-icon-download"
            size="mini"
            @click="handleExport"
            v-hasPermi="['system:article:export']"
          >导出</el-button>
        </el-col>
        <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
      </el-row>
  
      <el-table v-loading="loading" :data="articleList" @selection-change="handleSelectionChange">
        <el-table-column type="selection" width="55" align="center" />
        <el-table-column label="" align="center" prop="id" v-if="true"/>
        <el-table-column label="城市" align="center" prop="cityId" />
        <el-table-column label="文章标题" align="center" prop="title" />
        <el-table-column label="轮播图" align="center" prop="cover" />
        <el-table-column label="作者" align="center" prop="author" />
        <el-table-column label="内容" align="center" prop="content" />
        <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:article:edit']"
            >修改</el-button>
            <el-button
              size="mini"
              type="text"
              icon="el-icon-delete"
              @click="handleDelete(scope.row)"
              v-hasPermi="['system:article:remove']"
            >删除</el-button>
          </template>
        </el-table-column>
      </el-table>
  
      <pagination
        v-show="total>0"
        :total="total"
        :page.sync="queryParams.pageNum"
        :limit.sync="queryParams.pageSize"
        @pagination="getList"
      />
  
      <!-- 添加或修改文章对话框 -->
      <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
        <el-form ref="form" :model="form" :rules="rules" label-width="80px">
          <el-form-item label="城市" prop="cityId">
            <el-input v-model="form.cityId" placeholder="请输入城市" />
          </el-form-item>
          <el-form-item label="文章标题" prop="title">
            <el-input v-model="form.title" type="textarea" placeholder="请输入内容" />
          </el-form-item>
          <el-form-item label="轮播图" prop="cover">
            <el-input v-model="form.cover" type="textarea" placeholder="请输入内容" />
          </el-form-item>
          <el-form-item label="作者" prop="author">
            <el-input v-model="form.author" placeholder="请输入作者" />
          </el-form-item>
          <el-form-item label="内容">
            <editor v-model="form.content" :min-height="192"/>
          </el-form-item>
        </el-form>
        <div slot="footer" class="dialog-footer">
          <el-button :loading="buttonLoading" type="primary" @click="submitForm">确 定</el-button>
          <el-button @click="cancel">取 消</el-button>
        </div>
      </el-dialog>
    </div>
  </template>
  
  <script>
  import { listArticle, getArticle, delArticle, addArticle, updateArticle } from "@/api/operation/article";
  
  export default {
    name: "Article",
    data() {
      return {
        // 按钮loading
        buttonLoading: false,
        // 遮罩层
        loading: true,
        // 选中数组
        ids: [],
        // 非单个禁用
        single: true,
        // 非多个禁用
        multiple: true,
        // 显示搜索条件
        showSearch: true,
        // 总条数
        total: 0,
        // 文章表格数据
        articleList: [],
        // 弹出层标题
        title: "",
        // 是否显示弹出层
        open: false,
        // 查询参数
        queryParams: {
          pageNum: 1,
          pageSize: 10,
          cityId: undefined,
          title: undefined,
          cover: undefined,
          author: undefined,
          content: undefined,
        },
        // 表单参数
        form: {},
        // 表单校验
        rules: {
        }
      };
    },
    created() {
      this.getList();
    },
    methods: {
      /** 查询文章列表 */
      getList() {
        this.loading = true;
        listArticle(this.queryParams).then(response => {
          this.articleList = response.rows;
          this.total = response.total;
          this.loading = false;
        });
      },
      // 取消按钮
      cancel() {
        this.open = false;
        this.reset();
      },
      // 表单重置
      reset() {
        this.form = {
          id: undefined,
          cityId: undefined,
          title: undefined,
          cover: undefined,
          author: undefined,
          content: undefined,
          createBy: undefined,
          createTime: undefined,
          updateBy: undefined,
          updateTime: undefined,
          delFlag: undefined
        };
        this.resetForm("form");
      },
      /** 搜索按钮操作 */
      handleQuery() {
        this.queryParams.pageNum = 1;
        this.getList();
      },
      /** 重置按钮操作 */
      resetQuery() {
        this.resetForm("queryForm");
        this.handleQuery();
      },
      // 多选框选中数据
      handleSelectionChange(selection) {
        this.ids = selection.map(item => item.id)
        this.single = selection.length!==1
        this.multiple = !selection.length
      },
      /** 新增按钮操作 */
      handleAdd() {
        this.reset();
        this.open = true;
        this.title = "添加文章";
      },
      /** 修改按钮操作 */
      handleUpdate(row) {
        this.loading = true;
        this.reset();
        const id = row.id || this.ids
        getArticle(id).then(response => {
          this.loading = false;
          this.form = response.data;
          this.open = true;
          this.title = "修改文章";
        });
      },
      /** 提交按钮 */
      submitForm() {
        this.$refs["form"].validate(valid => {
          if (valid) {
            this.buttonLoading = true;
            if (this.form.id != null) {
              updateArticle(this.form).then(response => {
                this.$modal.msgSuccess("修改成功");
                this.open = false;
                this.getList();
              }).finally(() => {
                this.buttonLoading = false;
              });
            } else {
              addArticle(this.form).then(response => {
                this.$modal.msgSuccess("新增成功");
                this.open = false;
                this.getList();
              }).finally(() => {
                this.buttonLoading = false;
              });
            }
          }
        });
      },
      /** 删除按钮操作 */
      handleDelete(row) {
        const ids = row.id || this.ids;
        this.$modal.confirm('是否确认删除文章编号为"' + ids + '"的数据项？').then(() => {
          this.loading = true;
          return delArticle(ids);
        }).then(() => {
          this.loading = false;
          this.getList();
          this.$modal.msgSuccess("删除成功");
        }).catch(() => {
        }).finally(() => {
          this.loading = false;
        });
      },
      /** 导出按钮操作 */
      handleExport() {
        this.download('system/article/export', {
          ...this.queryParams
        }, `article_${new Date().getTime()}.xlsx`)
      }
    }
  };
  </script>