<template>
  <div class="dv-decoration1" :ref="ref">
    <svg :width="width" :height="height">
      <polygon :fill="fade(mergedColor[1] || defaultColor[1], 10)"
               :stroke="mergedColor[1]"
               :points="`20 10, 25 4, 55 4 60 10`"/>

      <polygon :fill="fade(mergedColor[1] || defaultColor[1], 10)"
               :stroke="mergedColor[1]"
               :points="`20 ${height - 10}, 25 ${height - 4}, 55 ${height - 4} 60 ${height - 10}`"/>

      <polygon :fill="fade(mergedColor[1] || defaultColor[1], 10)"
               :stroke="mergedColor[1]"
               :points="`${width - 20} 10, ${width - 25} 4, ${width - 55} 4 ${width - 60} 10`"/>

      <polygon :fill="fade(mergedColor[1] || defaultColor[1], 10)"
               :stroke="mergedColor[1]"
               :points="`${width - 20} ${height - 10}, ${width - 25} ${height - 4}, ${width - 55} ${height - 4} ${width - 60} ${height - 10}`"/>

      <polygon :fill="fade(mergedColor[0] || defaultColor[0], 20)"
               :stroke="mergedColor[0]"
               :points="`
          20 10, 5 ${height / 2} 20 ${height - 10}
          ${width - 20} ${height - 10} ${width - 5} ${height / 2} ${width - 20} 10
        `"/>

      <polyline fill="transparent"
                :stroke="fade(mergedColor[0] || defaultColor[0], 70)"
                :points="`25 18, 15 ${height / 2} 25 ${height - 18}`"/>

      <polyline fill="transparent"
                :stroke="fade(mergedColor[0] || defaultColor[0], 70)"
                :points="`${width - 25} 18, ${width - 15} ${height / 2} ${width - 25} ${height - 18}`"/>
    </svg>
    <div class="decoration-content">
      <slot></slot>
    </div>
  </div>
</template>

<script>
  import { deepClone } from 'canknow-core/src/libs/object';
  import { merge } from 'canknow-core/src/libs/object';
  import AutoResize from "../../../mixins/AutoResize";
  import { fade } from '@jiaminghi/color';

  export default {
    name: 'DvDecoration1',
    mixins: [AutoResize],
    props: {
      color: {
        type: Array,
        default: () => ([])
      }
    },
    data () {
      return {
        ref: 'decoration1',
        defaultColor: ['#1a98fc', '#2cf7fe'],
        mergedColor: []
      }
    },
    watch: {
      color () {
        const { mergeColor } = this;
        mergeColor();
      }
    },
    methods: {
      mergeColor () {
        const { color, defaultColor } = this;
        this.mergedColor = merge(deepClone(defaultColor, true), color || []);
      },
      fade
    },
    mounted () {
      const { mergeColor } = this;
      mergeColor();
    }
  };
</script>
