<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>
export default {
  name: 'KoleRate',
  props: {
    value: { 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'] }
  },
  computed: {
    stars() {
      return Array.from({ length: this.count }, (_, i) => Math.max(0, Math.min(1, this.value - i)));
    },
    textLabel() {
      return this.value ? this.texts[Math.ceil(this.value) - 1] : '未评分';
    }
  },
  methods: {
    choose(evt, i) {
      if (this.readonly || this.disabled) return;
      let next = i + 1;
      if (this.allowHalf) {
        const rect = evt.currentTarget.getBoundingClientRect();
        const half = (evt.clientX - rect.left) < rect.width / 2;
        next = half ? i + 0.5 : i + 1;
      }
      if (next === this.value) next = 0;
      this.$emit('input', next);
      this.$emit('change', next);
    }
  }
};
</script>

<!-- 样式对齐 组件7.txt RateInput 规范 -->
<style>
.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>
