<template>
  <div 
    class="editable-element-image"
    :class="{ 'lock': elementInfo.lock }"
    :style="{
      top: elementInfo.top + 'px',
      left: elementInfo.left + 'px',
      width: elementInfo.width + 'px',
      height: elementInfo.height + 'px',
      transform: `rotate(${elementInfo.rotate}deg)`,
    }"
    @mousedown="$event => handleSelectElement($event)" 
  >
    <ImageClipHandler
      v-if="isCliping"
      :src="elementInfo.src"
      :clipData="elementInfo.clip"
      :width="elementInfo.width"
      :height="elementInfo.height"
      :top="elementInfo.top"
      :left="elementInfo.left"
      :clipPath="clipShape.style"
      @clip="range => handleClip(range)"
    />
    <div 
      class="element-content"
      v-else
      v-contextmenu="contextmenus"
      :style="{
        filter: shadowStyle ? `drop-shadow(${shadowStyle})` : '',
        transform: flipStyle,
      }"
    >
      <ImageOutline :elementInfo="elementInfo" />

      <div class="image-content" :style="{ clipPath: clipShape.style }">
        <img 
          :src="elementInfo.src" 
          :draggable="false" 
          :style="{
            top: imgPosition.top,
            left: imgPosition.left,
            width: imgPosition.width,
            height: imgPosition.height,
            filter: filter,
          }" 
          alt=""
        />
      </div>
    </div>
  </div>
</template>

<script lang="ts">
import { computed, defineComponent, PropType } from 'vue'
import { MutationTypes, useStore } from '@/store'
import { PPTImageElement } from '@/types/slides'
import { ImageClipedEmitData } from '@/types/edit'
import { ContextmenuItem } from '@/components/Contextmenu/types'
import useElementShadow from '@/views/components/element/hooks/useElementShadow'
import useElementFlip from '@/views/components/element/hooks/useElementFlip'
import useClipImage from './useClipImage'
import useFilter from './useFilter'

import ImageOutline from './ImageOutline/index.vue'
import ImageClipHandler from './ImageClipHandler.vue'

export default defineComponent({
  name: 'editable-element-image',
  components: {
    ImageOutline,
    ImageClipHandler,
  },
  props: {
    elementInfo: {
      type: Object as PropType<PPTImageElement>,
      required: true,
    },
    selectElement: {
      type: Function as PropType<(e: MouseEvent, element: PPTImageElement, canMove?: boolean) => void>,
      required: true,
    },
    contextmenus: {
      type: Function as PropType<() => ContextmenuItem[]>,
    },
  },
  setup(props) {
    const store = useStore()
    const clipingImageElementId = computed(() => store.state.clipingImageElementId)
    const isCliping = computed(() => clipingImageElementId.value === props.elementInfo.id)

    const shadow = computed(() => props.elementInfo.shadow)
    const { shadowStyle } = useElementShadow(shadow)

    const flip = computed(() => props.elementInfo.flip)
    const { flipStyle } = useElementFlip(flip)

    const clip = computed(() => props.elementInfo.clip)
    const { clipShape, imgPosition } = useClipImage(clip)

    const filters = computed(() => props.elementInfo.filters)
    const { filter } = useFilter(filters)

    const handleSelectElement = (e: MouseEvent) => {
      if (props.elementInfo.lock) return
      e.stopPropagation()
      props.selectElement(e, props.elementInfo)
    }

    const handleClip = (data: ImageClipedEmitData) => {
      store.commit(MutationTypes.SET_CLIPING_IMAGE_ELEMENT_ID, '')
      
      if (!data) return

      const { range, position } = data
      const originClip = props.elementInfo.clip || {}
      
      const _props = {
        clip: { ...originClip, range },
        left: props.elementInfo.left + position.left,
        top: props.elementInfo.top + position.top,
        width: props.elementInfo.width + position.width,
        height: props.elementInfo.height + position.height,
      }
      store.commit(MutationTypes.UPDATE_ELEMENT, { id: props.elementInfo.id, props: _props })
    }

    return {
      isCliping,
      handleClip,
      clipingImageElementId,
      shadowStyle,
      handleSelectElement,
      clipShape,
      imgPosition,
      filter,
      flipStyle,
    }
  },
})
</script>

<style lang="scss" scoped>
.editable-element-image {
  position: absolute;

  &.lock .element-content {
    cursor: default;
  }
}

.element-content {
  width: 100%;
  height: 100%;
  position: relative;
  cursor: move;

  .image-content {
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: relative;
  }
  img {
    position: absolute;
  }
}
</style>
