lilishop-ui/buyer/src/components/Search.vue

<template>
  <div class="navbar" ref="rootRef" :class="{'small-search-box': useClass == 'fixed-show'}">
    <template v-if="useClass == 'fixed-show'">
      <div class="search search-embedded">
        <el-input
          v-model="searchData"
          size="large"
          class="search-input"
          placeholder="输入你想查找的商品"
          @focus="openPanel"
          @input="queueSuggest"
          @keyup.enter="search"
        />
        <div class="search-btn" @click="search">
          <el-icon :size="21"><SearchIcon /></el-icon>
        </div>
        <div v-if="showPanel" class="suggest-panel" @mousedown.prevent>
          <SearchSuggest
            :keyword="trimmedKeyword"
            :history="history"
            :hot-words="promotionTags"
            :suggestions="suggestions"
            :suggesting="suggesting"
            @pick="selectTags"
            @clear="clearHistory"
          />
        </div>
      </div>
    </template>
    <template v-else>
      <div class="container width_1200_auto flex flex-a-c">
        <img
          :src="logoImg"
          v-if="showLogo"
          class="logo-img"
          alt=""
          @click="$router.push('/')"
        />
        <div class="search-box">
          <div class="search">
            <el-input
              v-model="searchData"
              size="large"
              class="search-input"
              placeholder="输入你想查找的商品"
              @focus="openPanel"
              @input="queueSuggest"
              @keyup.enter="search"
            />
            <div class="search-btn" @click="search">
              <el-icon :size="21"><SearchIcon /></el-icon>
            </div>
            <div v-if="showPanel" class="suggest-panel" @mousedown.prevent>
              <SearchSuggest
                :keyword="trimmedKeyword"
                :history="history"
                :hot-words="promotionTags"
                :suggestions="suggestions"
                :suggesting="suggesting"
                @pick="selectTags"
                @clear="clearHistory"
              />
            </div>
          </div>
          <template v-if="showTag">
            <div v-if="promotionTags.length === 0"></div>
            <div v-else class="history-list flex">
              <div
                v-for="(item, index) in promotionTags"
                :key="index"
                class="mr_10"
              >
                <span class="history-item" @click="selectTags(item)">{{ item }}</span>
              </div>
            </div>
          </template>
        </div>
      </div>
    </template>
  </div>
</template>

<script setup>
import { computed, onMounted, onUnmounted, ref, watch } from 'vue'
import { useRoute, useRouter } from 'vue-router'
import storage from '@/plugins/storage.js'
import { goodsList, hotWords } from '@/api/goods.js'
import { Search as SearchIcon } from '@element-plus/icons-vue'
import SearchSuggest from '@/components/SearchSuggest.vue'
import { useAppStore } from '@/stores/app'

defineOptions({ name: 'search' })

const props = defineProps({
  showTag: {
    type: Boolean,
    default: true
  },
  showLogo: {
    type: Boolean,
    default: true
  },
  storeId: {
    type: String,
    default: ""
  },
  hover: {
    type: Boolean,
    default: false
  },
  useClass: {
    type: null,
    default: ''
  }
})

const emit = defineEmits(['search'])

const route = useRoute()
const router = useRouter()
const appStore = useAppStore()

const HISTORY_KEY = 'buyerSearchHistory'
const HISTORY_LIMIT = 10

function readHistory() {
  try {
    const raw = localStorage.getItem(HISTORY_KEY)
    const list = raw ? JSON.parse(raw) : []
    return Array.isArray(list) ? list.filter((item) => typeof item === 'string' && item.trim()) : []
  } catch {
    return []
  }
}

function parseHotWords(raw) {
  if (!raw) return []
  if (Array.isArray(raw)) return raw.filter(Boolean)
  if (typeof raw !== 'string') return []
  try {
    const parsed = JSON.parse(raw)
    if (Array.isArray(parsed)) return parsed.filter(Boolean)
  } catch {
    // 旧数据可能是逗号拼接
  }
  return raw.split(',').map((item) => item.trim()).filter(Boolean)
}

const rootRef = ref(null)
const searchData = ref('')
const history = ref([])
const panelVisible = ref(false)
const suggestions = ref([])
const suggesting = ref(false)
let suggestTimer = null
let suggestSeq = 0

const logoImg = computed(() => appStore.logoImg)

const trimmedKeyword = computed(() => {
  return (searchData.value || '').trim()
})

const promotionTags = computed(() => {
  return parseHotWords(appStore.hotWordsList)
})

const showPanel = computed(() => {
  if (!panelVisible.value) return false
  if (trimmedKeyword.value) return true
  return history.value.length > 0 || promotionTags.value.length > 0
})

watch(
  () => route.query.keyword,
  (value) => {
    searchData.value = value || ''
  }
)

function selectTags(item) {
  searchData.value = item
  search()
}

function remember(keyword) {
  const next = [keyword, ...history.value.filter((item) => item !== keyword)].slice(0, HISTORY_LIMIT)
  history.value = next
  localStorage.setItem(HISTORY_KEY, JSON.stringify(next))
}

function clearHistory() {
  history.value = []
  localStorage.removeItem(HISTORY_KEY)
}

function openPanel() {
  panelVisible.value = true
  if (trimmedKeyword.value) queueSuggest()
}

function closePanel() {
  panelVisible.value = false
}

function onDocumentClick(event) {
  if (rootRef.value && !rootRef.value.contains(event.target)) closePanel()
}

function queueSuggest() {
  panelVisible.value = true
  clearTimeout(suggestTimer)
  const keyword = trimmedKeyword.value
  if (!keyword) {
    suggestions.value = []
    suggesting.value = false
    return
  }
  suggesting.value = true
  suggestTimer = setTimeout(() => fetchSuggest(keyword), 300)
}

function fetchSuggest(keyword) {
  const seq = ++suggestSeq
  const params = { keyword, pageNumber: 1, pageSize: 8 }
  if (props.storeId) params.storeId = props.storeId
  goodsList(params).then((res) => {
    if (seq !== suggestSeq || keyword !== trimmedKeyword.value) return
    const records = res && res.success ? (res.result.records || []) : []
    const seen = new Set()
    const names = []
    promotionTags.value.forEach((word) => {
      if (word && String(word).toLowerCase().includes(keyword.toLowerCase()) && !seen.has(word)) {
        seen.add(word)
        names.push(word)
      }
    })
    records.forEach((item) => {
      const name = item && item.goodsName
      if (name && !seen.has(name)) {
        seen.add(name)
        names.push(name)
      }
    })
    suggestions.value = names.slice(0, 8)
  }).catch(() => {
    if (seq === suggestSeq) suggestions.value = []
  }).finally(() => {
    if (seq === suggestSeq) suggesting.value = false
  })
}

function search() {
  const keyword = trimmedKeyword.value
  searchData.value = keyword
  closePanel()
  if (keyword) remember(keyword)
  const url = route.path
  if (url == '/goodsList') {
    emit('search', keyword)
  } else {
    const pushData = {
      path: '/goodsList',
      query: { keyword },
    }
    if (props.storeId) pushData.query.storeId = props.storeId

    router.push(pushData)
  }
}

function searchStore() {
  emit('search', trimmedKeyword.value)
}

function applyHotWords(result) {
  const list = parseHotWords(result)
  appStore.setHotWords(list)
  storage.setItem('hotWordsList', JSON.stringify(list))
}

function loadHotWords() {
  hotWords({ count: 5 }).then((res) => {
    if (res.success && res.result) applyHotWords(res.result)
  }).catch(() => {
    // 热词为可选数据，失败时沿用缓存或默认热词
  })
  storage.setItem('hotWordsReloadTime', new Date().getTime())
}

// 初始化（原 created 钩子逻辑）
searchData.value = route.query.keyword || ''
history.value = readHistory()

if (!props.hover) {
  const reloadTime = storage.getItem('hotWordsReloadTime')
  const time = new Date().getTime() - 5 * 60 * 1000
  if (!reloadTime || time > reloadTime) loadHotWords()
}

onMounted(() => {
  document.addEventListener('click', onDocumentClick)
})

onUnmounted(() => {
  clearTimeout(suggestTimer)
  document.removeEventListener('click', onDocumentClick)
})
</script>
<style scoped lang="scss">
.navbar {
  height: 113px;
  background: #fff;
}

.navbar.small-search-box {
  height: 60px;
  width: 100%;
  margin: 0;
  display: flex;
  align-items: center;
  background: transparent;
}

.search-embedded {
  width: 100%;
  margin: 0;
}

.container {
  position: relative;
  height: 100%;
}

.search {
  $btn-gap: 4px;
  $btn-width: 60px;
  $input-height: 37.8px;

  position: relative;
  width: 778.4px;
  height: $input-height;
  margin: 10px 0px 5px 0;

  .search-input {
    width: 100%;

    :deep(.el-input__wrapper) {
      border: 1.4px solid $theme_color;
      box-sizing: border-box;
      border-radius: 19.6px;
      padding-left: 26px;
      padding-right: calc(#{$btn-gap * 2} + #{$btn-width});
      font-size: 14px;
      font-weight: normal;
      height: $input-height;
      color: #999;
      box-shadow: none;
    }
  }

  .search-btn {
    position: absolute;
    right: $btn-gap;
    top: $btn-gap;
    bottom: $btn-gap;
    width: $btn-width;
    border-radius: calc((#{$input-height} - #{$btn-gap * 2}) / 2);
    cursor: pointer;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    background-color: $theme_color;
    color: #ffffff;
  }
}

.search-embedded.search {
  width: 100%;
}

.search-box{
  margin-left: 28px;
}
.logo-img {
  max-width: 150px;
  cursor: pointer;
}

.history-list {
  margin-left: 28px;
}

.history-item {
  font-size: 13px;
  font-weight: normal;
  line-height: 16px;
  letter-spacing: 0px;
  margin-right: 17px;
  color: #666666;
  cursor: pointer;
}

.suggest-panel {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(100% + 8px);
  z-index: 30;
  padding: 8px 0;
  background: #fff;
  border: 1px solid #eee;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

</style>