<template>
  <view class="location-preview">
    <view class="preview-header">
      <text class="preview-title">位置预览</text>
      <text class="preview-summary">{{ summary }}</text>
    </view>

    <view class="preview-steps">
      <view
        v-for="(step, index) in steps"
        :key="step.id"
        class="preview-step"
      >
        <view
          class="step-dot"
          :class="{ target: index === steps.length - 1 }"
        ></view>
        <view v-if="index === 0" class="step-connector"></view>
        <text class="step-text">{{ step.text }}</text>
      </view>
    </view>

    <view class="action-row">
      <view class="action-btn secondary" @tap="emit('viewOutdoorMap')">
        <text class="action-text">馆外入口参考</text>
      </view>
      <view class="action-btn primary" @tap="handleShowTargetLocation">
        <text class="action-text">查看三维位置</text>
      </view>
    </view>
  </view>
</template>

<script setup lang="ts">
interface PreviewStep {
  id: string
  text: string
}

interface PreviewTargetLocation {
  poiId: string
  name: string
  floorId: string
  floorLabel?: string
  primaryCategoryZh?: string
  positionGltf?: [number, number, number]
}

const props = defineProps<{
  summary: string
  steps: PreviewStep[]
  targetLocation?: PreviewTargetLocation | null
}>()

const emit = defineEmits<{
  viewOutdoorMap: []
  showTargetLocation: [target: PreviewTargetLocation | null]
}>()

const handleShowTargetLocation = () => {
  emit('showTargetLocation', props.targetLocation || null)
}
</script>

<style scoped lang="scss">
.location-preview {
  position: absolute;
  left: 0;
  right: 0;
  bottom: calc(env(safe-area-inset-bottom) + 34px);
  height: 222px;
  padding: 22px 20px 16px;
  box-sizing: border-box;
  background: #ffffff;
  border: 0;
  border-radius: 20px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.14);
  z-index: 45;
}

.preview-header {
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.preview-title {
  font-size: 18px;
  line-height: 24px;
  font-weight: 700;
  color: #000000;
}

.preview-summary {
  flex: 1;
  min-width: 0;
  text-align: right;
  font-size: 12px;
  line-height: 20px;
  color: #6b7178;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.preview-steps {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.preview-step {
  position: relative;
  min-height: 30px;
  display: flex;
  align-items: center;
  padding-left: 24px;
}

.step-dot {
  position: absolute;
  left: 4px;
  top: 10px;
  width: 10px;
  height: 10px;
  box-sizing: border-box;
  background: #000000;
  border-radius: 5px;
  z-index: 2;
}

.step-dot.target {
  background: var(--museum-accent);
  border: 1px solid #000000;
}

.step-connector {
  position: absolute;
  left: 8px;
  top: 18px;
  width: 2px;
  height: 38px;
  background: repeating-linear-gradient(
    to bottom,
    #d9d9d9 0,
    #d9d9d9 5px,
    transparent 5px,
    transparent 9px
  );
}

.step-text {
  font-size: 13px;
  line-height: 18px;
  color: #1f2329;
}

.action-row {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 16px;
  display: flex;
  gap: 16px;
}

.action-btn {
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  border-radius: 8px;
}

.action-btn.secondary {
  width: 151px;
  background: #ffffff;
  border: 1px solid #000000;
}

.action-btn.primary {
  width: 168px;
  background: #000000;
  border: 1px solid #000000;
}

.action-text {
  font-size: 14px;
  line-height: 19px;
  font-weight: 500;
  color: #000000;
}

.action-btn.primary .action-text {
  color: var(--museum-accent);
}

@media (max-width: 360px) {
  .action-row {
    gap: 10px;
  }

  .action-btn.secondary,
  .action-btn.primary {
    width: auto;
    flex: 1;
  }
}
</style>
