<template>
  <el-dialog :title="upload.title" :visible.sync="dialogVisible" width="400px" append-to-body>
    <el-upload ref="upload" :limit="1" accept=".xlsx, .xls" :headers="upload.headers"
               :action="upload.url + '?updateSupport=' + upload.updateSupport" :disabled="upload.isUploading"
               :on-progress="handleFileUploadProgress" :on-success="handleFileSuccess" :auto-upload="false" drag>
      <i class="el-icon-upload"></i>
      <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
      <div class="el-upload__tip text-center" slot="tip">
        <div class="el-upload__tip" slot="tip">
          <el-checkbox v-model="upload.updateSupport"/>
          是否更新已经存在的数据
        </div>
        <span>仅允许导入xls、xlsx格式文件。</span>
        <el-link v-if="isDownload" type="primary" :underline="false" style="font-size:12px;vertical-align: baseline;"
                 @click="importTemplate">下载模板
        </el-link>
      </div>
    </el-upload>
    <div slot="footer" class="dialog-footer">
      <el-button type="primary" @click="submitFileForm" :disabled="!isUpload">确 定</el-button>
      <el-button @click="dialogVisible = false">取 消</el-button>
    </div>
  </el-dialog>
</template>

<script>
import request, {getBaseHeader} from "@/utils/request";

export default {
  name: "ImportCommon",
  data() {
    return {
      // 用户导入参数
      upload: {
        // 弹出层标题（用户导入）
        title: "",
        // 设置上传的请求头部
        headers: getBaseHeader(),
        // 是否禁用上传
        isUploading: false,
        // 是否更新已经存在的数据
        updateSupport: 0,
        // 上传的地址
        url: "/import-data",
        // 下载模板地址
        getUrl: "/get-import-template",
      },
      dialogVisible: false,
      baseUrl: process.env.VUE_APP_BASE_API + '/admin-api',
      isUpload: false,
      isDownload: false,
    }
  },
  methods: {
    open(data) {
      if (data.url) {
        this.isUpload = true
      }
      if (data.getUrl) {
        this.isDownload = true
      }
      this.upload = Object.assign(this.upload, data)
      if (this.isUpload) {
        this.upload.url = this.baseUrl + data.url
      }
      if (this.isDownload) {
        this.upload.getUrl = this.baseUrl + data.getUrl
      }
      this.dialogVisible = true
    },
    // 文件上传中处理
    handleFileUploadProgress(event, file, fileList) {
      this.upload.isUploading = true;
    },
    // 文件上传成功处理
    handleFileSuccess(response, file, fileList) {
      this.dialogVisible = false
      if (response.code !== 0) {
        this.$modal.msgError(response.msg)
        return;
      }
      this.upload.isUploading = false;
      this.$refs.upload.clearFiles();
      // 拼接提示语
      let data = response.data;
      let text = '导入成功数量：' + data.createNames.length;
      for (const name of data.createNames) {
        text += '<br />&nbsp;&nbsp;&nbsp;&nbsp;' + name;
      }
      text += '<br />更新成功数量：' + data.updateNames.length;
      for (const name of data.updateNames) {
        text += '<br />&nbsp;&nbsp;&nbsp;&nbsp;' + name;
      }
      text += '<br />更新失败数量：' + Object.keys(data.failureNames).length;
      for (const name in data.failureNames) {
        text += '<br />&nbsp;&nbsp;&nbsp;&nbsp;' + name + '：' + data.failureNames[name];
      }
      this.$alert(text, "导入结果", {dangerouslyUseHTMLString: true});
      this.$emit('success')
    },
    /** 下载模板操作 */
    importTemplate() {
      request({
        url: this.upload.getUrl,
        method: 'get',
        responseType: 'blob'
      }).then(res => {
        this.$download.excel(res, `${this.upload.title}模板.xls`);
      })
    },
    // 提交上传文件
    submitFileForm() {
      this.$refs.upload.submit();
    },
  }
}
</script>

<style scoped lang="scss">

</style>
