<template>
  <div class="experts-page">
    <div class="page-header">
      <div>
        <h2 class="page-title">🎓 专家管理</h2>
        <p class="page-desc">管理平台认证专家信息，支持专家审核与状态管理</p>
      </div>
      <a-space>
        <a-button @click="loadExperts" :loading="loading">
          <template #icon><ReloadOutlined /></template>
          刷新
        </a-button>
      </a-space>
    </div>

    <!-- 统计卡片 -->
    <a-row :gutter="[16, 16]" class="mb-6">
      <a-col :xs="12" :sm="6" v-for="stat in statCards" :key="stat.key">
        <div
          class="stat-card"
          :class="[stat.color, { active: filterStatus === stat.key }]"
          @click="handleStatFilter(stat.key)"
        >
          <div class="stat-icon">{{ stat.icon }}</div>
          <div class="stat-info">
            <div class="stat-value">{{ stat.value }}</div>
            <div class="stat-label">{{ stat.label }}</div>
          </div>
        </div>
      </a-col>
    </a-row>

    <div class="panel">
      <div class="panel-header">
        <span class="panel-title">📋 专家列表</span>
        <a-space wrap>
          <a-select v-model:value="filterStatus" style="width: 120px" @change="handleSearch">
            <a-select-option :value="undefined">全部状态</a-select-option>
            <a-select-option :value="0">待审核</a-select-option>
            <a-select-option :value="1">已认证</a-select-option>
            <a-select-option :value="2">已拒绝</a-select-option>
          </a-select>
          <a-input-search
            v-model:value="searchKeyword"
            placeholder="搜索姓名 / 单位 / 研究领域"
            style="width: 240px"
            @search="handleSearch"
          />
        </a-space>
      </div>

      <a-table
        :columns="columns"
        :data-source="pagedExperts"
        :loading="loading"
        :pagination="tablePagination"
        row-key="id"
        @change="handleTableChange"
        size="middle"
      >
        <template #bodyCell="{ column, record }">
          <template v-if="column.key === 'info'">
            <div class="expert-info-cell">
              <div class="expert-avatar">{{ record.name?.charAt(0) || '?' }}</div>
              <div class="expert-info-text">
                <div class="expert-name">{{ record.name }}</div>
                <div class="expert-meta">
                  <span v-if="record.title">🏷️ {{ record.title }}</span>
                  <span v-if="record.organization" class="meta-item">🏛️ {{ record.organization }}</span>
                </div>
              </div>
            </div>
          </template>

          <template v-if="column.key === 'contact'">
            <div class="contact-cell">
              <div v-if="record.email">📧 {{ record.email }}</div>
              <div v-if="record.phone">📱 {{ record.phone }}</div>
            </div>
          </template>

          <template v-if="column.key === 'status'">
            <a-tag :color="statusColor(record.status)">{{ statusText(record.status) }}</a-tag>
          </template>

          <template v-if="column.key === 'createTime'">
            <span class="text-sm text-gray">{{ record.createTime?.substring(0, 10) || '-' }}</span>
          </template>

          <template v-if="column.key === 'action'">
            <a-space>
              <a-button type="link" size="small" @click="handleView(record)">查看</a-button>
              <a-button type="link" size="small" @click="handleReview(record)" v-if="record.status === 0">审核</a-button>
            </a-space>
          </template>
        </template>
      </a-table>
    </div>

    <!-- 查看详情弹窗 -->
    <a-modal
      v-model:open="showDetailModal"
      title="专家详情"
      width="700px"
      :footer="null"
    >
      <template v-if="currentExpert">
        <a-descriptions :column="2" bordered size="small">
          <a-descriptions-item label="姓名">{{ currentExpert.name }}</a-descriptions-item>
          <a-descriptions-item label="职称">{{ currentExpert.title || '-' }}</a-descriptions-item>
          <a-descriptions-item label="单位">{{ currentExpert.organization || '-' }}</a-descriptions-item>
          <a-descriptions-item label="研究领域">{{ currentExpert.researchArea || '-' }}</a-descriptions-item>
          <a-descriptions-item label="邮箱">{{ currentExpert.email || '-' }}</a-descriptions-item>
          <a-descriptions-item label="电话">{{ currentExpert.phone || '-' }}</a-descriptions-item>
          <a-descriptions-item label="状态">
            <a-tag :color="statusColor(currentExpert.status)">{{ statusText(currentExpert.status) }}</a-tag>
          </a-descriptions-item>
          <a-descriptions-item label="申请时间">{{ currentExpert.createTime?.substring(0, 10) || '-' }}</a-descriptions-item>
          <a-descriptions-item label="个人简介" :span="2">{{ currentExpert.bio || '-' }}</a-descriptions-item>
          <a-descriptions-item label="研究成果" :span="2">{{ currentExpert.achievements || '-' }}</a-descriptions-item>
        </a-descriptions>

        <div v-if="currentExpert.attachments?.length" class="attachments-section">
          <h4>附件材料</h4>
          <div class="attachment-list">
            <a v-for="(file, idx) in currentExpert.attachments" :key="idx" :href="file.url" target="_blank">
              📎 {{ file.name }}
            </a>
          </div>
        </div>

        <div v-if="currentExpert.status === 0" class="review-actions">
          <a-divider />
          <a-space>
            <a-button type="primary" @click="handleApprove(currentExpert)">通过审核</a-button>
            <a-button danger @click="handleReject(currentExpert)">拒绝</a-button>
          </a-space>
        </div>
      </template>
    </a-modal>
  </div>
</template>

<script setup lang="ts">
import { ReloadOutlined } from '@ant-design/icons-vue'
import { message } from 'ant-design-vue'

definePageMeta({ layout: 'admin' })
useHead({ title: '专家管理 - 后台管理' })

interface Expert {
  id?: number
  name?: string
  title?: string
  organization?: string
  researchArea?: string
  email?: string
  phone?: string
  bio?: string
  achievements?: string
  status?: number
  createTime?: string
  attachments?: { name: string; url: string }[]
}

const loading = ref(false)
const experts = ref<Expert[]>([])
const filterStatus = ref<number | undefined>(undefined)
const searchKeyword = ref('')

const pagination = reactive({
  current: 1,
  pageSize: 20,
  showSizeChanger: true,
  showQuickJumper: true,
})

const statCards = reactive([
  { key: 0, icon: '⏳', label: '待审核', value: 0, color: 'orange' },
  { key: 1, icon: '✅', label: '已认证', value: 0, color: 'green' },
  { key: 2, icon: '❌', label: '已拒绝', value: 0, color: 'red' },
  { key: -1, icon: '👥', label: '全部专家', value: 0, color: 'blue' },
])

const columns = [
  { title: '专家信息', key: 'info', width: 280 },
  { title: '联系方式', key: 'contact', width: 200 },
  { title: '状态', key: 'status', width: 100 },
  { title: '申请时间', key: 'createTime', width: 120 },
  { title: '操作', key: 'action', width: 120 },
]

const showDetailModal = ref(false)
const currentExpert = ref<Expert | null>(null)

const filteredExperts = computed(() => {
  const keyword = searchKeyword.value.trim().toLowerCase()
  return experts.value
    .filter(item => filterStatus.value === undefined || item.status === filterStatus.value)
    .filter(item => {
      if (!keyword) return true
      return [item.name, item.organization, item.researchArea]
        .some(val => String(val || '').toLowerCase().includes(keyword))
    })
    .sort((a, b) => (b.id || 0) - (a.id || 0))
})

const pagedExperts = computed(() => {
  const start = (pagination.current - 1) * pagination.pageSize
  return filteredExperts.value.slice(start, start + pagination.pageSize)
})

const tablePagination = computed(() => ({
  current: pagination.current,
  pageSize: pagination.pageSize,
  total: filteredExperts.value.length,
  showSizeChanger: pagination.showSizeChanger,
  showQuickJumper: pagination.showQuickJumper,
}))

function updateStats() {
  statCards[0].value = experts.value.filter(i => i.status === 0).length
  statCards[1].value = experts.value.filter(i => i.status === 1).length
  statCards[2].value = experts.value.filter(i => i.status === 2).length
  statCards[3].value = experts.value.length
}

async function loadExperts() {
  loading.value = true
  try {
    // TODO: 接入实际API
    // const res = await listExperts()
    // experts.value = res || []
    updateStats()
  } catch (e: any) {
    message.error(e?.message || '加载专家列表失败')
  } finally {
    loading.value = false
  }
}

function handleStatFilter(key: number) {
  filterStatus.value = key === -1 ? undefined : key
  pagination.current = 1
}

function handleSearch() {
  pagination.current = 1
}

function handleTableChange(pag: { current: number; pageSize: number }) {
  pagination.current = pag.current
  pagination.pageSize = pag.pageSize
}

function handleView(record: Expert) {
  currentExpert.value = record
  showDetailModal.value = true
}

function handleReview(record: Expert) {
  currentExpert.value = record
  showDetailModal.value = true
}

async function handleApprove(expert: Expert) {
  try {
    // TODO: 接入实际API
    // await approveExpert(expert.id)
    message.success('已通过审核')
    showDetailModal.value = false
    await loadExperts()
  } catch (e: any) {
    message.error(e?.message || '操作失败')
  }
}

async function handleReject(expert: Expert) {
  try {
    // TODO: 接入实际API
    // await rejectExpert(expert.id)
    message.success('已拒绝')
    showDetailModal.value = false
    await loadExperts()
  } catch (e: any) {
    message.error(e?.message || '操作失败')
  }
}

function statusText(status?: number) {
  const map: Record<number, string> = { 0: '待审核', 1: '已认证', 2: '已拒绝' }
  return map[status ?? -1] || '-'
}

function statusColor(status?: number) {
  const map: Record<number, string> = { 0: 'orange', 1: 'success', 2: 'error' }
  return map[status ?? -1] || 'default'
}

onMounted(() => {
  loadExperts()
})
</script>

<style scoped>
.experts-page { min-height: 100%; }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.page-title { font-size: 18px; font-weight: 700; color: #1f2937; margin: 0; }
.page-desc { font-size: 13px; color: #9ca3af; margin: 2px 0 0; }

.stat-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  border-radius: 12px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
}
.stat-card:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); }
.stat-card.active { box-shadow: 0 4px 12px rgba(0,0,0,0.12); }
.stat-card.blue { background: #eff6ff; border-color: #dbeafe; }
.stat-card.green { background: #f0fdf4; border-color: #bbf7d0; }
.stat-card.orange { background: #fff7ed; border-color: #fed7aa; }
.stat-card.red { background: #fff1f2; border-color: #fecdd3; }
.stat-card.active.blue { border-color: #3b82f6; }
.stat-card.active.green { border-color: #22c55e; }
.stat-card.active.orange { border-color: #f97316; }
.stat-card.active.red { border-color: #ef4444; }
.stat-icon { font-size: 28px; flex-shrink: 0; }
.stat-value { font-size: 22px; font-weight: 700; color: rgba(0,0,0,0.85); line-height: 1.2; }
.stat-label { font-size: 12px; color: rgba(0,0,0,0.45); margin-top: 2px; }

.panel { background: #fff; border: 1px solid #f0f0f0; border-radius: 12px; overflow: hidden; }
.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid #f5f5f5;
  flex-wrap: wrap;
  gap: 10px;
}
.panel-title { font-size: 14px; font-weight: 600; color: rgba(0,0,0,0.85); }

.expert-info-cell { display: flex; align-items: flex-start; gap: 12px; }
.expert-avatar {
  width: 48px; height: 48px; border-radius: 50%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff; font-size: 20px; font-weight: 700;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.expert-info-text { flex: 1; min-width: 0; }
.expert-name { font-size: 14px; font-weight: 500; color: rgba(0,0,0,0.85); }
.expert-meta { font-size: 12px; color: rgba(0,0,0,0.45); margin-top: 4px; }
.meta-item { margin-left: 8px; }
.contact-cell { font-size: 12px; color: rgba(0,0,0,0.65); line-height: 1.7; }

.attachments-section { margin-top: 16px; }
.attachments-section h4 { font-size: 14px; margin-bottom: 8px; }
.attachment-list { display: flex; flex-direction: column; gap: 8px; }
.attachment-list a { color: #1890ff; }

.review-actions { text-align: right; }

.text-sm { font-size: 12px; }
.text-gray { color: rgba(0,0,0,0.45); }
.mb-6 { margin-bottom: 24px; }
</style>
