<template>
  <div class="vue-uploader">
    <div class="file-list">
      <section v-for="(file, index) of files" class="file-item draggable-item" :key="file.name">
        <img :src="file.src" alt="" ondragstart="return false;">
        <span class="file-remove" @click="remove(index)">+</span>
      </section>
      <section v-if="status == 'ready'" class="file-item">
        <div @click="add" class="add"></div>
      </section>
    </div>
    <section v-if="files.length != 0" class="upload-func">
      <div class="progress-bar">
        <section v-if="uploading" :width="(percent * 100) + '%'">{{(percent * 100) + '%'}}</section>
      </div>
      <div class="operation-box">
        <button v-if="status == 'ready'" @click="submit">上傳</button>
        <button v-if="status == 'finished'" @click="finished">完成</button>
      </div>
    </section>
    <input type="file" @change="fileChanged" ref="file" multiple="multiple" accept="image/jpg,image/jpeg,image/png,image/bmp">
  </div>
</template>
<script>
  export default {
    data() {
      return {
        status: 'ready',
        files: [],
        point: {},
        uploading: false,
        percent: 0
      }
    },
    methods: {
      add() {
        this.$refs.file.click()
      },
      submit() {
        console.log(this.files)
        // if (this.files.length === 0) {
        //   console.warn('no file!');
        //   return
        // }
        var that=this
       // 這里是OSS
        const client = new OSS.Wrapper({
          region: 'oss-cn-hangzhou', 
          accessKeyId: 'your access key',
          accessKeySecret: 'your access secret',
          bucket: 'your bucket name'
        });
        const fNum = this.files;
        for(var i=0;i<fNum.length;i++){
          var f=fNum[i].file
          console.log(f)
          const Name=f.name
          console.log(Name)
          const suffix = Name.substr(Name.indexOf("."));
          const obj=this.timestamp();
          const storeAs = 'header/'+obj+suffix // 路徑+時間戳+后綴名
          console.log(storeAs)
          client.multipartUpload(storeAs, f).then(function (result){
            console.log(result.res.requestUrls)
          })
        }
      },
      // 時間戳
      timestamp:function(){ 
        const time = new Date(); 
        const y = time.getFullYear(); 
        const m = time.getMonth()+1; 
        const d = time.getDate(); 
        const h = time.getHours(); 
        const mm = time.getMinutes(); 
        const s = time.getSeconds(); 
        const ms = time.getMilliseconds() 
        return ""+y+this.Add0(m)+this.Add0(d)+this.Add0(h)+this.Add0(mm)+this.Add0(s)+this.Add0(ms); 
      },
      Add0:function(m){ 
        return m<10?'0'+m : m; 
      } ,

      finished() {
        this.files = []
        this.status = 'ready'
        
      },
      remove(index) {
        this.files.splice(index, 1)
      },
      fileChanged() {
        const list = this.$refs.file.files
        for (let i = 0; i < list.length; i++) {
          if (!this.isContain(list[i])) {
            const item = {
              name: list[i].name,
              size: list[i].size,
              file: list[i]
            }
            this.html5Reader(list[i], item)
            this.files.push(item)
          }
        }
        this.$refs.file.value = ''
      },
      // 將圖片文件轉(zhuǎn)成BASE64格式
      html5Reader(file, item){
        const reader = new FileReader()
        reader.onload = (e) => {
          this.$set(item, 'src', e.target.result)
        }
        reader.readAsDataURL(file)
      },
      isContain(file) {
       return this.files.find((item) => item.name === file.name && item.size === file.size)
      },
    }
  }
</script>
<style>
.vue-uploader {
  border: 1px solid #e5e5e5;
}
.vue-uploader .file-list {
  padding: 10px 0px;
}
.vue-uploader .file-list:after {
  content: '';
  display: block;
  clear: both;
  visibility: hidden;
  line-height: 0;
  height: 0;
  font-size: 0;
}
.vue-uploader .file-list .file-item {
  float: left;
  margin-left: 10px;
  
  position: relative;
  width: 150px;
  text-align: center;
}
.vue-uploader .file-list .file-item img{
  width: 150px;
  height: 150px;
  border: 1px solid #ececec;
}
.vue-uploader .file-list .file-item .file-remove {
  position: absolute;
  right: 4px;
  display: none;
  top: 4px;
  width: 20px;
  height: 20px;
  font-size:20px;
  text-align: center;
  color: white;
  cursor: pointer;
  line-height: 20px;
  border-radius: 100%;
  transform: rotate(45deg);
  background: rgba(0, 0, 0, 0.5);
}
.vue-uploader .file-list .file-item:hover .file-remove {
  display: inline;
}
.vue-uploader .file-list .file-item .file-name {
  margin: 0;
  height: 40px;
  word-break: break-all;
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.vue-uploader .add {
  width: 150px;
  height: 150px;
  float: left;
  text-align: center;
  line-height: 150px;
  font-size: 30px;
  cursor: pointer;
  background: url(../assets/upImg.png) no-repeat; // 這里使用的是我本地圖片
  background-size: 100% 100%;
}
.vue-uploader .upload-func {
  display: flex;
  padding: 10px;
  margin: 0px;
  background: #f8f8f8;
  border-top: 1px solid #ececec;
}
.vue-uploader .upload-func .progress-bar {
  flex-grow: 1;
}
.vue-uploader .upload-func .progress-bar section {
  margin-top: 5px;
  background: #00b4aa;
  border-radius: 3px;
  text-align: center; 
  color: #fff;
  font-size: 12px;
  transition: all .5s ease;
}
.vue-uploader .upload-func .operation-box {
  flex-grow: 0;
  padding-left: 10px;
}
.vue-uploader .upload-func .operation-box button {
  padding: 4px 12px;
  color: #fff;
  background: #007ACC;
  border: none;
  border-radius: 2px;
  cursor: pointer;
}
.vue-uploader > input[type="file"] {
  display: none;
}
</style>