<template>
  <div class="dv-border-box-2" :ref="ref">
    <svg class="dv-border-svg-container" :width="width" :height="height">
      <polygon :fill="backgroundColor" :points="`
        7, 7 ${width - 7}, 7 ${width - 7}, ${height - 7} 7, ${height - 7}
      `" />

      <polyline
        :stroke="mergedColor[0]"
        :points="`2, 2 ${width - 2} ,2 ${width - 2}, ${height - 2} 2, ${height - 2} 2, 2`"
      />
      <polyline
        :stroke="mergedColor[1]"
        :points="`6, 6 ${width - 6}, 6 ${width - 6}, ${height - 6} 6, ${height - 6} 6, 6`"
      />
      <circle :fill="mergedColor[0]" cx="11" cy="11" r="1" />
      <circle :fill="mergedColor[0]" :cx="width - 11" cy="11" r="1" />
      <circle :fill="mergedColor[0]" :cx="width - 11" :cy="height - 11" r="1" />
      <circle :fill="mergedColor[0]" cx="11" :cy="height - 11" r="1" />
    </svg>

    <div class="border-box-content">
      <slot></slot>
    </div>
  </div>
</template>

<script>
import autoResize from '../../../mixin/autoResize'

import { deepMerge } from '@jiaminghi/charts/lib/util/index'

import { deepClone } from '@jiaminghi/c-render/lib/plugin/util'

export default {
  name: 'DvBorderBox2',
  mixins: [autoResize],
  props: {
    color: {
      type: Array,
      default: () => ([])
    },
    backgroundColor: {
      type: String,
      default: 'transparent'
    }
  },
  data () {
    return {
      ref: 'border-box-2',

      defaultColor: ['#fff', 'rgba(255, 255, 255, 0.6)'],

      mergedColor: []
    }
  },
  watch: {
    color () {
      const { mergeColor } = this

      mergeColor()
    }
  },
  methods: {
    mergeColor () {
      const { color, defaultColor } = this

      this.mergedColor = deepMerge(deepClone(defaultColor, true), color || [])
    }
  },
  mounted () {
    const { mergeColor } = this

    mergeColor()
  }
}
</script>

<style lang="less">
.dv-border-box-2 {
  position: relative;
  width: 100%;
  height: 100%;

  .dv-border-svg-container {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0px;
    left: 0px;

    & > polyline {
      fill: none;
      stroke-width: 1;
    }
  }

  .border-box-content {
    position: relative;
    width: 100%;
    height: 100%;
  }
}
</style>
