<script setup lang="ts">
import type {PropType} from "vue";

const props = defineProps({
  ratios: {
    type: Array as PropType<{
      ratio: string,
      label?: string,
      value: string | number
    }[]>,
    required: true
  }
})
const emit = defineEmits(['update:modelValue'])

const selected = ref<string | number>('')

const handle_select = (value: string | number) => {
  selected.value = value
  emit('update:modelValue', value)
}

const getRatio = (ratio: string) => {
  const [w, h] = ratio.split(/[:\/]/).map(Number)
  return {
    w: w,
    h: h
  }
}

const getShapeSize = (r: { w: number, h: number }, size: number) => {
  const ratio = r.w / r.h
  if (r.w > r.h) {
    return {
      w: size,
      h: size / ratio
    }
  } else {
    return {
      w: size * ratio,
      h: size
    }
  }
}
</script>

<template>
  <div class="grid grid-cols-4 gap-2">
    <div v-for="(ratio, k) in ratios" :key="ratio.value" @click="handle_select(ratio.value)"
         class="w-full aspect-square bg-neutral-200/50 rounded-lg flex flex-col justify-around items-center cursor-pointer"
         :class="[ratio.value === selected && 'bg-sky-200/50']">
      <div class="bg-neutral-300/50 text-neutral-900 rounded flex justify-center items-center"
           :class="[ratio.value === selected && 'bg-sky-300/50']" :style="{
        width: getShapeSize(getRatio(ratio.ratio), 30).w * 2 + '%',
        height: getShapeSize(getRatio(ratio.ratio), 30).h * 2 + '%'
      }">
        <span class="text-xs font-thin">{{ ratio.ratio }}</span>
      </div>
      <span class="text-[10px]">
        {{ ratio?.label || getRatio(ratio.ratio).w > getRatio(ratio.ratio).h ? '横向' : '纵向' }}
      </span>
    </div>
  </div>
</template>

<style scoped>

</style>