<template>
  <div>
    <img title="上传头像" v-bind:src="options.img" @click="editCropper()" />
    <el-dialog
      :close-on-click-modal="false"
      :title="title"
      :visible.sync="open"
      width="800px"
    >
      <el-row>
        <el-col :md="12" :style="{ height: '350px' }" :xs="24">
          <vue-cropper
            ref="cropper"
            :autoCrop="options.autoCrop"
            :autoCropHeight="options.autoCropHeight"
            :autoCropWidth="options.autoCropWidth"
            :fixedBox="options.fixedBox"
            :img="options.img"
            :info="true"
            @realTime="realTime"
          />
        </el-col>
        <el-col :md="12" :style="{ height: '350px' }" :xs="24">
          <div class="avatar-upload-preview">
            <img :src="previews.url" :style="previews.img" />
          </div>
        </el-col>
      </el-row>
      <br />
      <el-row>
        <el-col :lg="2" :md="2">
          <el-upload
            :action="uploadUrl"
            :before-upload="beforeUpload"
            :show-file-list="false"
          >
            <el-button size="small">
              选择
              <i class="el-icon-upload el-icon--right"></i>
            </el-button>
          </el-upload>
        </el-col>
        <el-col :lg="{ span: 1, offset: 2 }" :md="2">
          <el-button
            icon="el-icon-plus"
            size="small"
            @click="changeScale(1)"
          ></el-button>
        </el-col>
        <el-col :lg="{ span: 1, offset: 1 }" :md="2">
          <el-button
            icon="el-icon-minus"
            size="small"
            @click="changeScale(-1)"
          ></el-button>
        </el-col>
        <el-col :lg="{ span: 1, offset: 1 }" :md="2">
          <el-button
            icon="el-icon-refresh-left"
            size="small"
            @click="rotateLeft()"
          ></el-button>
        </el-col>
        <el-col :lg="{ span: 1, offset: 1 }" :md="2">
          <el-button
            icon="el-icon-refresh-right"
            size="small"
            @click="rotateRight()"
          ></el-button>
        </el-col>
        <el-col :lg="{ span: 2, offset: 6 }" :md="2">
          <el-button size="small" type="primary" @click="uploadImg()"
            >上 传</el-button
          >
        </el-col>
      </el-row>
    </el-dialog>
  </div>
</template>

<script>
import store from "@/store";
import { VueCropper } from "vue-cropper";
import { uploadAvatar } from "@/api/system/user";

export default {
  components: { VueCropper },
  props: {
    user: {
      type: Object
    }
  },
  data() {
    return {
      // 是否显示弹出层
      open: false,
      // 弹出层标题
      title: "修改头像",
      options: {
        img: store.getters.avatar, //裁剪图片的地址
        autoCrop: true, // 是否默认生成截图框
        autoCropWidth: 200, // 默认生成截图框宽度
        autoCropHeight: 200, // 默认生成截图框高度
        fixedBox: true // 固定截图框大小 不允许改变
      },
      previews: {},
      uploadUrl: process.env.VUE_APP_BASE_API + "/system/user/profile/avatar"
    };
  },
  methods: {
    // 编辑头像
    editCropper() {
      this.open = true;
    },
    // 向左旋转
    rotateLeft() {
      this.$refs.cropper.rotateLeft();
    },
    // 向右旋转
    rotateRight() {
      this.$refs.cropper.rotateRight();
    },
    // 图片缩放
    changeScale(num) {
      num = num || 1;
      this.$refs.cropper.changeScale(num);
    },
    // 上传预处理
    beforeUpload(file) {
      if (file.type.indexOf("image/") == -1) {
        this.msgError("文件格式错误，请上传图片类型,如：JPG，PNG后缀的文件。");
      } else {
        const reader = new FileReader();
        reader.readAsDataURL(file);
        reader.onload = () => {
          this.options.img = reader.result;
        };
      }
    },
    // 上传图片
    uploadImg() {
      this.$refs.cropper.getCropBlob(data => {
        let formData = new FormData();
        formData.append("avatarfile", data);
        uploadAvatar(formData).then(response => {
          if (response.code === 200) {
            this.open = false;
            this.options.img = process.env.VUE_APP_BASE_API + response.imgUrl;
            this.msgSuccess("修改成功");
          } else {
            this.msgError(response.msg);
          }
          this.$refs.cropper.clearCrop();
        });
      });
    },
    // 实时预览
    realTime(data) {
      this.previews = data;
    },
    uploadActionUrl() {}
  }
};
</script>
