<template>
  <div class="global-search">
    <el-tooltip content="全局搜索" placement="bottom">
      <el-button type="text" class="header-btn" @click="openSearch">
        <el-icon :size="18"><Search /></el-icon>
      </el-button>
    </el-tooltip>

    <el-dialog
      v-model="visible"
      :show-close="false"
      :append-to-body="true"
      class="search-dialog"
      width="680px"
      top="12vh"
      @opened="focusInput"
    >
      <div class="search-header">
        <el-icon :size="20" class="search-prefix"><Search /></el-icon>
        <input
          ref="searchInput"
          v-model="keyword"
          class="search-input"
          placeholder="搜索用户、订单、工单、用户商品..."
          @keydown.enter="handleSearch"
          @keydown.escape="visible = false"
        />
        <span v-if="keyword" class="search-clear" @click="clearSearch">
          <el-icon :size="16"><CircleClose /></el-icon>
        </span>
        <span class="search-shortcut">ESC</span>
      </div>

      <div v-if="hasSearched" class="search-body">
        <el-tabs v-model="activeTab" class="search-tabs">
          <el-tab-pane name="user">
            <template #label>
              <span class="tab-label">用户 <em v-if="results.user.total > 0">{{ results.user.total }}</em></span>
            </template>
            <div class="result-list" v-loading="results.user.loading">
              <div v-if="results.user.list.length === 0 && !results.user.loading" class="empty-tip">未找到相关用户</div>
              <div
                v-for="item in results.user.list"
                :key="item.user_id"
                class="result-item"
                @click="goToUser(item)"
              >
                <el-avatar :size="32" :src="item.cover || ''" class="result-avatar">
                  {{ (item.user_name || '')[0] }}
                </el-avatar>
                <div class="result-info">
                  <span class="result-title" v-html="highlight(item.user_name)"></span>
                  <span class="result-desc">ID: {{ item.user_id }} · {{ item.phone || item.email || '—' }}</span>
                </div>
                <el-icon class="result-arrow"><ArrowRight /></el-icon>
              </div>
            </div>
            <div class="result-pagination" v-if="results.user.total > pageSize">
              <el-pagination small layout="prev, pager, next" :total="results.user.total" :page-size="pageSize" v-model:current-page="results.user.page" @current-change="(p) => { results.user.page = p; searchUsers(keyword.trim()) }" />
            </div>
          </el-tab-pane>

          <el-tab-pane name="order">
            <template #label>
              <span class="tab-label">订单 <em v-if="results.order.total > 0">{{ results.order.total }}</em></span>
            </template>
            <div class="result-list" v-loading="results.order.loading">
              <div v-if="results.order.list.length === 0 && !results.order.loading" class="empty-tip">未找到相关订单</div>
              <div
                v-for="item in results.order.list"
                :key="item.id"
                class="result-item"
                @click="goToOrder(item)"
              >
                <div class="result-icon order-icon">
                  <el-icon :size="18"><Document /></el-icon>
                </div>
                <div class="result-info">
                  <span class="result-title" v-html="highlight(item.name || ('#' + item.id))"></span>
                  <span class="result-desc">用户ID: {{ item.userId }} · ¥{{ (item.price / 100).toFixed(2) }} · {{ item.type }}</span>
                </div>
                <el-tag size="small" :type="orderStatusType(item.state)">{{ orderStatusText(item.state) }}</el-tag>
              </div>
            </div>
            <div class="result-pagination" v-if="results.order.total > pageSize">
              <el-pagination small layout="prev, pager, next" :total="results.order.total" :page-size="pageSize" v-model:current-page="results.order.page" @current-change="(p) => { results.order.page = p; searchOrders(keyword.trim()) }" />
            </div>
          </el-tab-pane>

          <el-tab-pane name="ticket">
            <template #label>
              <span class="tab-label">工单 <em v-if="results.ticket.total > 0">{{ results.ticket.total }}</em></span>
            </template>
            <div class="result-list" v-loading="results.ticket.loading">
              <div v-if="results.ticket.list.length === 0 && !results.ticket.loading" class="empty-tip">未找到相关工单</div>
              <div
                v-for="item in results.ticket.list"
                :key="item.work_id"
                class="result-item"
                @click="goToTicket(item)"
              >
                <div class="result-icon ticket-icon">
                  <el-icon :size="18"><ChatDotSquare /></el-icon>
                </div>
                <div class="result-info">
                  <span class="result-title" v-html="highlight(item.name)"></span>
                  <span class="result-desc">{{ item.user?.userName || ('用户' + item.user?.userId) }} · {{ formatTime(item.created_at) }}</span>
                </div>
                <el-tag size="small" :type="ticketStatusType(item.status)">{{ ticketStatusText(item.status) }}</el-tag>
              </div>
            </div>
            <div class="result-pagination" v-if="results.ticket.total > pageSize">
              <el-pagination small layout="prev, pager, next" :total="results.ticket.total" :page-size="pageSize" v-model:current-page="results.ticket.page" @current-change="(p) => { results.ticket.page = p; searchTickets(keyword.trim()) }" />
            </div>
          </el-tab-pane>

          <el-tab-pane name="goods">
            <template #label>
              <span class="tab-label">用户商品 <em v-if="results.goods.total > 0">{{ results.goods.total }}</em></span>
            </template>
            <div class="result-list" v-loading="results.goods.loading">
              <div v-if="results.goods.list.length === 0 && !results.goods.loading" class="empty-tip">未找到相关用户商品</div>
              <div
                v-for="item in results.goods.list"
                :key="item.id"
                class="result-item"
                @click="goToGoods(item)"
              >
                <div class="result-icon goods-icon">
                  <el-icon :size="18"><Box /></el-icon>
                </div>
                <div class="result-info">
                  <span class="result-title">
                    <span v-html="highlight(item.good?.name || item.tag || ('商品#' + item.id))"></span>
                    <el-tag v-if="isGoodsDeleted(item)" size="small" type="danger" class="deleted-flag">已删除</el-tag>
                  </span>
                  <span class="result-desc">用户: {{ item.user?.UserName || item.userId }} · 到期: {{ formatTime(item.expireTime) }}</span>
                </div>
                <el-icon class="result-arrow"><ArrowRight /></el-icon>
              </div>
            </div>
            <div class="result-pagination" v-if="results.goods.total > pageSize">
              <el-pagination small layout="prev, pager, next" :total="results.goods.total" :page-size="pageSize" v-model:current-page="results.goods.page" @current-change="(p) => { results.goods.page = p; searchGoods(keyword.trim()) }" />
            </div>
          </el-tab-pane>
        </el-tabs>
      </div>

      <div v-else class="search-placeholder">
        <el-icon :size="48" class="placeholder-icon"><Search /></el-icon>
        <p>输入关键词后按回车搜索</p>
        <div class="search-tips">
          <span>支持搜索：用户名/手机号、订单号、工单标题、商品名称</span>
        </div>
      </div>
    </el-dialog>
  </div>
</template>

<script setup>
import { ref, reactive, onMounted, onUnmounted } from 'vue'
import { useRouter } from 'vue-router'
import { Search, CircleClose, ArrowRight, Document, ChatDotSquare, Box } from '@element-plus/icons-vue'
import { getUserList } from '@/api/admin/user.js'
import { getOrderList } from '@/api/admin/order.js'
import { getTickerList } from '@/api/ticket.js'
import { getUserGoodsList } from '@/api/admin/userVm.js'

const router = useRouter()

const visible = ref(false)
const keyword = ref('')
const activeTab = ref('user')
const hasSearched = ref(false)
const searchInput = ref(null)

const pageSize = 10

const results = reactive({
  user: { list: [], total: 0, loading: false, page: 1 },
  order: { list: [], total: 0, loading: false, page: 1 },
  ticket: { list: [], total: 0, loading: false, page: 1 },
  goods: { list: [], total: 0, loading: false, page: 1 }
})

const openSearch = () => {
  visible.value = true
}

const focusInput = () => {
  searchInput.value?.focus()
}

const clearSearch = () => {
  keyword.value = ''
  hasSearched.value = false
  searchInput.value?.focus()
}

const handleSearch = () => {
  const key = keyword.value.trim()
  if (!key) return
  hasSearched.value = true
  results.user.page = 1
  results.order.page = 1
  results.ticket.page = 1
  results.goods.page = 1
  searchUsers(key)
  searchOrders(key)
  searchTickets(key)
  searchGoods(key)
}

const searchUsers = async (key) => {
  results.user.loading = true
  results.user.list = []
  try {
    const res = await getUserList({ page: results.user.page, count: pageSize, key })
    if (res.data?.code === 200) {
      results.user.list = res.data.data?.data || []
      results.user.total = res.data.data?.all_count || results.user.list.length
    }
  } catch (e) { /* ignore */ }
  results.user.loading = false
}

const searchOrders = async (key) => {
  results.order.loading = true
  results.order.list = []
  try {
    const res = await getOrderList({ page: results.order.page, count: pageSize, key })
    if (res.data?.code === 200) {
      results.order.list = res.data.data?.list || []
      results.order.total = res.data.data?.all_count || results.order.list.length
    }
  } catch (e) { /* ignore */ }
  results.order.loading = false
}

const searchTickets = async (key) => {
  results.ticket.loading = true
  results.ticket.list = []
  try {
    const res = await getTickerList(pageSize, results.ticket.page, '', '', '', '', key)
    if (res?.code === 200) {
      results.ticket.list = res.data?.data || []
      results.ticket.total = res.data?.all_count || results.ticket.list.length
    }
  } catch (e) { /* ignore */ }
  results.ticket.loading = false
}

const searchGoods = async (key) => {
  results.goods.loading = true
  results.goods.list = []
  try {
    const res = await getUserGoodsList({ page: results.goods.page, count: pageSize, key })
    if (res.data?.code === 200) {
      results.goods.list = res.data.data?.data || []
      results.goods.total = res.data.data?.all_count || results.goods.list.length
    }
  } catch (e) { /* ignore */ }
  results.goods.loading = false
}

// 判断用户商品是否已删除（后端返回 deleteAt 字段，有值即已删除）
const isGoodsDeleted = (item) => !!(item?.deleteAt || item?.DeleteAt || item?.deleted_at)

const highlight = (text) => {
  if (!text || !keyword.value) return text
  const key = keyword.value.trim()
  if (!key) return text
  const regex = new RegExp(`(${key.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')})`, 'gi')
  return String(text).replace(regex, '<mark>$1</mark>')
}

const formatTime = (time) => {
  if (!time) return '—'
  const d = new Date(time)
  if (isNaN(d.getTime())) return '—'
  return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')}`
}

const goToUser = (item) => {
  visible.value = false
  router.push({ path: '/user/detail', query: { user_id: item.user_id } })
}

const goToOrder = (item) => {
  visible.value = false
  router.push({ path: '/order/list', query: { keyword: keyword.value } })
}

const goToTicket = (item) => {
  visible.value = false
  router.push({ path: '/ticket/detail', query: { id: item.work_id } })
}

const goToGoods = (item) => {
  visible.value = false
  router.push({ name: 'UserGoodsDetail', params: { id: item.id } })
}

const orderStatusText = (status) => {
  const map = { 0: '待支付', 1: '已完成', 2: '已取消', 3: '已退款' }
  return map[status] || '未知'
}

const orderStatusType = (status) => {
  const map = { 0: 'warning', 1: 'success', 2: 'info', 3: 'danger' }
  return map[status] || 'info'
}

const ticketStatusText = (status) => {
  const map = { 0: '待处理', 1: '处理中', 2: '已回复', 3: '已关闭' }
  return map[status] || '未知'
}

const ticketStatusType = (status) => {
  const map = { 0: 'danger', 1: 'warning', 2: 'success', 3: 'info' }
  return map[status] || 'info'
}

const handleKeydown = (e) => {
  if ((e.ctrlKey || e.metaKey) && e.key === 'k') {
    e.preventDefault()
    openSearch()
  }
}

onMounted(() => {
  document.addEventListener('keydown', handleKeydown)
})

onUnmounted(() => {
  document.removeEventListener('keydown', handleKeydown)
})
</script>

<style scoped>
.global-search {
  display: flex;
  align-items: center;
}

.header-btn {
  height: 36px;
  width: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #34495e;
  transition: all 0.2s ease;
  border-radius: 0;
}

.header-btn:hover {
  background-color: #f8f9fa;
  color: #2c3e50;
}
</style>

<style>
.search-dialog .el-dialog__header {
  display: none;
}

.search-dialog .el-dialog__body {
  padding: 0;
}

.search-dialog .el-dialog {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.search-header {
  display: flex;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid #e8ecf0;
  gap: 12px;
}

.search-prefix {
  color: #909399;
  flex-shrink: 0;
}

.search-input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 16px;
  color: #2c3e50;
  background: transparent;
  line-height: 1.5;
}

.search-input::placeholder {
  color: #a8abb2;
}

.search-clear {
  cursor: pointer;
  color: #909399;
  display: flex;
  align-items: center;
  transition: color 0.2s;
}

.search-clear:hover {
  color: #606266;
}

.search-shortcut {
  font-size: 12px;
  color: #a8abb2;
  border: 1px solid #dcdfe6;
  border-radius: 4px;
  padding: 2px 6px;
  flex-shrink: 0;
}

.search-body {
  max-height: 460px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.search-tabs {
  height: 100%;
}

.search-tabs .el-tabs__header {
  padding: 0 20px;
  margin-bottom: 0;
}

.search-tabs .el-tabs__content {
  max-height: 400px;
  overflow-y: auto;
}

.tab-label em {
  font-style: normal;
  font-size: 11px;
  background: #409eff;
  color: #fff;
  border-radius: 8px;
  padding: 1px 6px;
  margin-left: 4px;
  vertical-align: middle;
}

.result-list {
  padding: 8px 12px;
  min-height: 80px;
}

.result-item {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s;
  gap: 12px;
}

.result-item:hover {
  background: #f5f7fa;
}

.result-avatar {
  flex-shrink: 0;
  background: #ecf5ff;
  color: #409eff;
  font-size: 14px;
}

.result-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.order-icon {
  background: #fdf6ec;
  color: #e6a23c;
}

.ticket-icon {
  background: #f0f9eb;
  color: #67c23a;
}

.goods-icon {
  background: #ecf5ff;
  color: #409eff;
}

.result-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.result-title {
  font-size: 14px;
  color: #2c3e50;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-title :deep(mark) {
  background: #fff3cd;
  color: #e6a23c;
  padding: 0 2px;
  border-radius: 2px;
}

.result-title .deleted-flag {
  margin-left: 6px;
  vertical-align: middle;
}

.result-desc {
  font-size: 12px;
  color: #909399;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-arrow {
  color: #c0c4cc;
  flex-shrink: 0;
}

.result-pagination {
  display: flex;
  justify-content: center;
  padding: 8px 12px 12px;
  border-top: 1px solid #f0f2f5;
}

.empty-tip {
  text-align: center;
  color: #909399;
  font-size: 14px;
  padding: 32px 0;
}

.search-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 20px;
  color: #909399;
}

.placeholder-icon {
  color: #dcdfe6;
  margin-bottom: 12px;
}

.search-placeholder p {
  margin: 0 0 8px;
  font-size: 14px;
}

.search-tips {
  font-size: 12px;
  color: #a8abb2;
}
</style>
