<template>
  <div class="kole-rate" :class="[size !== 'default' ? size : '', { 'is-readonly': readonly, 'is-disabled': disabled }]">
    <span
      v-for="(s, i) in stars" :key="i"
      class="kole-rate-star"
      @click="choose($event, i)"
    >
      ★<span class="kole-rate-fill" :style="{ width: (s * 100) + '%' }">★</span>
    </span>
    <span v-if="showText" class="kole-rate-text">{{ textLabel }}</span>
  </div>
</template>

<script setup>
import { computed } from 'vue';

const props = defineProps({
  modelValue: { type: Number, default: 0 },   // 当前评分
  count: { type: Number, default: 5 },
  allowHalf: { type: Boolean, default: false },
  readonly: { type: Boolean, default: false },
  disabled: { type: Boolean, default: false },
  size: { type: String, default: 'default' },  // default | sm | lg
  showText: { type: Boolean, default: false },
  texts: { type: Array, default: () => ['极差', '失望', '一般', '满意', '惊喜'] }
});
const emit = defineEmits(['update:modelValue', 'change']);

const stars = computed(() =>
  Array.from({ length: props.count }, (_, i) => Math.max(0, Math.min(1, props.modelValue - i)))
);
const textLabel = computed(() => props.modelValue ? props.texts[Math.ceil(props.modelValue) - 1] : '未评分');

function choose(evt, i) {
  if (props.readonly || props.disabled) return;
  let next = i + 1;
  if (props.allowHalf) {
    const rect = evt.currentTarget.getBoundingClientRect();
    const half = (evt.clientX - rect.left) < rect.width / 2;
    next = half ? i + 0.5 : i + 1;
  }
  if (next === props.modelValue) next = 0;
  emit('update:modelValue', next);
  emit('change', next);
}
</script>

<!-- 样式对齐 组件7.txt RateInput 规范 -->
<style scoped>
.kole-rate { display: inline-flex; align-items: center; gap: 4px; font-family: var(--font-family, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif); }
.kole-rate-star { position: relative; display: inline-block; font-size: 20px; line-height: 1; color: #E8ECF1; cursor: pointer; transition: color .15s, transform .1s; }
.kole-rate-star:hover { transform: scale(1.1); }
.kole-rate-star .kole-rate-fill { position: absolute; left: 0; top: 0; overflow: hidden; color: #2F54EB; white-space: nowrap; pointer-events: none; }
.kole-rate.is-readonly .kole-rate-star,
.kole-rate.is-disabled .kole-rate-star { cursor: default; }
.kole-rate.is-readonly .kole-rate-star:hover,
.kole-rate.is-disabled .kole-rate-star:hover { transform: none; }
.kole-rate-text { margin-left: 8px; font-size: 14px; color: #6E6E6E; }
.kole-rate.sm .kole-rate-star { font-size: 14px; }
.kole-rate.lg .kole-rate-star { font-size: 28px; }
.kole-rate.sm .kole-rate-text { font-size: 12px; }
.kole-rate.lg .kole-rate-text { font-size: 16px; }
</style>
