<template>
  <el-dialog :close-on-click-modal="false" :title="title" :type="type" :visible.sync="isVisible" :width="width" @dragDialog="handleDrag" top="50px" v-el-drag-dialog>
    <el-form :model="attachment" :rules="rules" label-position="right" label-width="100px" ref="form">
      <el-form-item :label="$t('table.attachment.bizId')" prop="bizId">
        <el-input v-model="attachment.bizId" />
      </el-form-item>

      <el-form-item :label="$t('table.attachment.bizType')" prop="bizType">
        <el-input v-model="attachment.bizType" />
      </el-form-item>
      <el-form-item label="文件" prop="fileLength">
        <fileUpload :acceptSize="2*1024*1024" :auto-upload="false" :limit="5" @fileLengthVaild="fileLengthVaild" @setId="setIdAndSubmit" ref="fileRef">
          <el-button size="small" slot="trigger" type="primary">选取文件</el-button>
          <div class="el-upload__tip" slot="tip">文件不超过2MB</div>
        </fileUpload>
      </el-form-item>
    </el-form>
    <div class="dialog-footer" slot="footer">
      <el-button @click="isVisible = false" plain type="warning">{{ $t('common.cancel') }}</el-button>
      <el-button :disabled="disabled" @click="submitForm" plain type="primary">{{ $t('common.confirm') }}</el-button>
    </div>
  </el-dialog>
</template>
<script>
import elDragDialog from '@/directive/el-drag-dialog'
import fileUpload from "@/components/zuihou/fileUpload"

export default {
  name: 'AttachmentEdit',
  directives: { elDragDialog, fileUpload },
  components: { fileUpload },
  props: {
    dialogVisible: {
      type: Boolean,
      default: false
    },
    type: {
      type: String,
      default: 'add'
    }
  },
  data () {
    return {
      accept: "image/jpeg, image/gif, image/png",
      attachment: this.initAttachment(),
      screenWidth: 0,
      width: this.initWidth(),
      fileLength: 0,
      disabled: false,
      rules: {
        bizType: [
          { required: true, message: this.$t('rules.require'), trigger: 'blur' },
          { min: 0, max: 255, message: this.$t('rules.range0to255'), trigger: 'blur' },
        ],
        bizId: { min: 0, max: 255, message: this.$t('rules.range0to255'), trigger: 'blur' },
        fileLength: {          
          required: true, trigger: "change",
          validator: (rule, value, callback) => {
            const vm = this;
            if (vm.fileLength === 0) {
              callback(new Error("请上传文件"))
            } else if (vm.fileLength > 5) {
              callback(new Error("一次性只能上传5个文件"))
            } else {
              callback()
            }
          }
        }
      }
    }
  },
  computed: {
    isVisible: {
      get () {
        return this.dialogVisible
      },
      set () {
        this.close()
        this.reset()
      }
    },
    title () {
      return this.$t('common.upload')
    }
  },
  watch: {

  },
  mounted () {
    window.onresize = () => {
      return (() => {
        this.width = this.initWidth()
      })()
    }
  },
  methods: {
    initAttachment () {
      return {
        id: '',
        bizId: '',
        bizType: '',
        file: null,
        isSingle: false
      }
    },
    handleDrag () {
      console.log(`我被拖动了`)
    },
    // 附件长度校验
    fileLengthVaild (data) {
      const vm = this;
      vm.fileLength = data || 0;
    },
    initWidth () {
      this.screenWidth = document.body.clientWidth
      if (this.screenWidth < 991) {
        return '90%'
      } else if (this.screenWidth < 1400) {
        return '45%'
      } else {
        return '800px'
      }
    },
    setAttachment (val) {
      const vm = this
      if (val) {
        vm.attachment = { ...val }
      }
    },
    close () {
      this.$emit('close')
    },
    reset () {
      // 先清除校验，再清除表单，不然有奇怪的bug
      this.$refs.form.clearValidate()
      this.$refs.form.resetFields()
      this.attachment = this.initAttachment()
      this.$refs.fileRef.init({
        id: "",
        bizId: "",
        bizType: "",
      })

    },
    submitForm () {
      const vm = this
      this.$refs.form.validate((valid) => {
        if (valid) {
          vm.editSubmit()
        } else {
          return false
        }
      })
    },
    editSubmit () {
      const vm = this
      vm.disabled = true
      vm.$refs.fileRef.submitFile(this.attachment.id, this.attachment.bizId, this.attachment.bizType)
    },
    setIdAndSubmit (isUploadCompleted) {
      const vm = this
      if (isUploadCompleted) {
        vm.disabled = false
        vm.isVisible = false
        vm.$message({
          message: vm.$t('tips.createSuccess'),
          type: 'success'
        })
        vm.$emit('success')
      }
    }

  }
}
</script>
<style lang="scss" scoped>
</style>
