<!--
 * @Description: 
 * @Version: 1.0
 * @Autor: zhuyijun
 * @Date: 2021-11-29 22:13:51
 * @LastEditTime: 2022-02-20 18:54:19
-->
<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item :to="{path:'/goods'}">商品列表</el-breadcrumb-item>
      <el-breadcrumb-item>编辑商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区 -->
    <el-card>
      <!-- 提示区域 -->
      <el-alert title="添加商品信息"
                center
                show-icon
                :closable="false"
                type="info">
      </el-alert>
      <!-- 步骤条 -->
      <el-steps :space="200"
                :active="activeIndex - 0"
                finish-status="success"
                align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <el-form :model="editForm"
               :rules="editFormRules"
               ref="editFormRef"
               label-width="100px"
               label-position="top">
        <!-- tab栏区域 -->
        <el-tabs v-model="activeIndex"
                 :tab-position="tabPosition"
                 :before-leave="beforeTabLeave"
                 @tab-click="tabClicked">
          <el-tab-pane label="基本信息"
                       name="0">
            <el-form-item label="商品名称"
                          prop="goods_name">
              <el-input v-model="editForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格"
                          prop="goods_price">
              <el-input v-model="editForm.goods_price"></el-input>
            </el-form-item>
            <el-form-item label="商品重量"
                          prop="goods_weight">
              <el-input v-model="editForm.goods_weight"></el-input>
            </el-form-item>
            <el-form-item label="商品数量"
                          prop="goods_number">
              <el-input v-model="editForm.goods_number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类"
                          prop="goods_cat">
              <el-cascader v-model="editForm.goods_cat"
                           :options="cateList"
                           :props="cateProps"
                           @change="handleChange"></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数"
                       name="1">
            <!-- 渲染表单的Item项 -->
            <el-form-item v-for="item in manyTableData"
                          :key="item.attr_id+''"
                          :label="item.attr_name">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox :label="cb"
                             v-for="(cb, i) in item.attr_vals"
                             :key="i+''"></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性"
                       name="2">
            <!-- 渲染表单的Item项 -->
            <el-form-item v-for="item in onlyTableData"
                          :key="item.attr_id +''"
                          :label="item.attr_name">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片"
                       name="3">
            <!-- 上传图片
            action： 表示上传api地址
            list-type: 指定预览组件呈现方式
             -->
            <el-upload :action="uploadURL"
                       :on-preview="handlePreview"
                       :on-remove="handleRemove"
                       list-type="picture"
                       :headers="headerObj"
                       :on-success="handleSuccess"
                       v-model="editForm.pics">
              <el-button size="small"
                         type="primary">点击上传</el-button>
            </el-upload>

          </el-tab-pane>
          <el-tab-pane label="商品内容"
                       name="4">
            <!-- 富文本编辑器 -->
            <quill-editor v-model="editForm.goods_introduce">
            </quill-editor>
            <!-- <editor v-model="editForm.goods_introduce"
                    :upload-url='uploadURL'></editor> -->
          </el-tab-pane>
          <el-tab-pane label="完成"
                       name="5">
            <!-- 添加商品按钮 -->
            <el-button type="primary"
                       class="btnedit"
                       @click="edit">编辑商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

    <el-dialog title="图片预览"
               :visible.sync="previewVisible"
               width="75%"
               @close="previewClosed">
      <img :src="previewPath"
           class="previewImg">
    </el-dialog>
  </div>
</template>

<script>
// import editor from '../markdown/markdown.vue'
export default {
  components: {
    // editor
  },
  data () {
    return {
      activeIndex: 0,
      tabPosition: 'left',
      editForm: {
        goods_id: '',
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        //商品所属分类数组
        goods_cat: [],
        //   图片数组
        pics: [],
        //商品详情描述
        goods_introduce: '',
        attrs: []
      },
      editFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' }
        ]
      },
      cateList: [],
      cateProps: {
        expandTrigger: 'hover',
        label: 'cat_name',
        value: 'cat_id',
        children: 'children'
      },
      manyTableData: [],
      onlyTableData: [],
      //   上传图片的url地址
      uploadURL: 'http://localhost:8888/api/private/v1/upload',
      headerObj: {
        Authorization: window.localStorage.getItem('token')
      },
      previewPath: '',
      previewVisible: false,
      quillOption: {

      }
    }
  },
  created () {
    const id = this.$route.query.id
    if (id) {
      this.editForm.goods_id = id
    }
    this.getCateList()
    this.getGoodById(id)
  },
  methods: {
    async getCateList () {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        this.$message.error(res.meta.msg)
      }
      this.cateList = res.data
      //   console.log(res.data)
    },
    //TODO 商品分类回显代写
    //递归设置分类
    handlerCate (list, id) {
    }
    ,
    async getGoodById (id) {
      const { data: res } = await this.$http.get(`goods/${id}`)
      if (res.meta.status !== 200) {
        this.$message.error(res.meta.msg)
      }
      //   console.log(res.data)
      this.editForm = res.data
    },
    handleChange () {
      if (this.editForm.goods_cat.length !== 3) {
        this.editForm.goods_cat.length = []
        this.$message.info('请选择三级分类')
      }
    },
    // 监听标签切换
    beforeTabLeave (activeName, oldActiveName) {
      if (oldActiveName === '0' && this.editForm.goods_cat.length !== 3) {
        this.$message.error('请选择商品分类')
        return false
      }
      return true
    },
    async getManyAttribute () {
      const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, {
        params: { sel: 'many' }
      })
      if (res.meta.status !== 200) {
        this.$message.error(res.meta.msg)
      }
      res.data.forEach(item => {
        let vals = item.attr_vals
        item.attr_vals = vals.length === 0 ? [] : vals.split(' ')
      })
      this.manyTableData = res.data
    },
    async getOnlyAttribute () {
      const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, {
        params: { sel: 'only' }
      })
      if (res.meta.status !== 200) {
        this.$message.error(res.meta.msg)
      }
      //   res.data.forEach(item => {
      //     let vals = item.attr_vals
      //     item.attr_vals = vals.length === 0 ? [] : vals.split(' ')
      //   })
      this.onlyTableData = res.data
      //   console.log(res.data)
    },
    tabClicked () {
      switch (this.activeIndex) {
        case '1':
          this.getManyAttribute()
          break
        case '2':
          this.getOnlyAttribute()
          break
        case '3': break
        case '4': break
        default:
      }
    },
    // 处理图片预览效果
    handlePreview (file) {
      this.previewPath = file.response.data.url
      this.previewVisible = true
    },
    // 处理已出图片操作
    handleRemove (file) {
      // 1、获取将要删除的图片的临时路径
      const filePath = file.response.data.tmp_path
      // 2、从pics素组中，找到这个图片的索引值
      const i = this.editForm.pics.findIndex(item => item.pic === filePath)
      // 3、调用数组的splice方法，把图片信息对象，从pics数组中移除
      this.editForm.pics.splice(i, 1)
    },
    // 监听上传成功的事件
    handleSuccess (response) {
      //1、拼接得到一个图片信息对象
      const picInfo = { pic: response.data.tmp_path }
      // 2、将图片信息对象 push到pics数组中
      this.editForm.pics.push(picInfo)
    },
    previewClosed () {
      this.previewPath = ''
    },
    // 编辑商品函数
    edit () {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return this.$message.error('请填写必要的表单项！')
        // 深拷贝
        let form = JSON.parse(JSON.stringify(this.editForm))
        form.goods_cat = form.goods_cat.join(',')
        // 处理动态参数
        this.manyTableData.forEach(item => {
          const attrInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' ')
          }
          form.attrs.push(attrInfo)
        })
        // 处理静态属性
        this.onlyTableData.forEach(item => {
          const attrInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals
          }
          form.attrs.push(attrInfo)
        })

        // 商品名称唯一

        // 执行添加逻辑
        const { data: res } = await this.$http.put(`goods/${form.goods_id}`, form)
        if (res.meta.status !== 201) {
          this.$message.error(res.meta.msg)
        }
        this.$message.success(res.meta.msg)
      })
    }
  },
  computed: {
    cateId () {
      if (this.editForm.goods_cat.length === 3) {
        return this.editForm.goods_cat[2]
      }
      return null
    }
  }
}
</script>
<style lang="less" scoped>
.el-checkbox {
  margin: 0 10px 0 0 !important;
}
.previewImg {
  width: 100%;
}
.btnedit {
  margin-top: 15px;
}
</style>