<template>
  <view>
    <view class="toolbar">
      <view class="header-actions">
        <button class="btn-primary btn-sm" @click="showCreate = true">创建订阅</button>
        <button class="btn-default btn-sm" @click="onExport">导出报表</button>
      </view>
    </view>

    <view class="page-card">
      <view class="stats-row">
        <view class="stat-item">
          <text class="stat-value">{{ stats.monthly_count ?? 0 }}</text>
          <text class="stat-label">月卡会员</text>
        </view>
        <view class="stat-item">
          <text class="stat-value">{{ stats.yearly_count ?? 0 }}</text>
          <text class="stat-label">年卡会员</text>
        </view>
        <view class="stat-item">
          <text class="stat-value">{{ stats.trial_count ?? 0 }}</text>
          <text class="stat-label">试用中</text>
        </view>
        <view class="stat-item">
          <text class="stat-value">¥{{ stats.monthly_revenue ?? 0 }}</text>
          <text class="stat-label">本月收入</text>
        </view>
      </view>
    </view>

    <DataTable
      :columns="columns"
      :records="records"
      :page="page"
      :totalPages="totalPages"
      @page="onPage"
    >
      <template #toolbar>
        <view class="tabs">
          <view class="tab" :class="{ active: activeTab === 'all' }" @click="onTabFilter('all')">全部订阅</view>
          <view class="tab" :class="{ active: activeTab === 'monthly' }" @click="onTabFilter('monthly')">月卡</view>
          <view class="tab" :class="{ active: activeTab === 'yearly' }" @click="onTabFilter('yearly')">年卡</view>
          <view class="tab" :class="{ active: activeTab === 'trial' }" @click="onTabFilter('trial')">试用中</view>
          <view class="tab" :class="{ active: activeTab === 'expired' }" @click="onTabFilter('expired')">已过期</view>
        </view>
      </template>

      <template #rows>
        <view class="t-row" v-for="item in records" :key="item.id">
          <text class="t-td flex2">{{ item.nickname || item.user_id }}</text>
          <text class="t-td flex1">{{ planText(item.plan) }}</text>
          <text class="t-td flex1">¥{{ item.amount || '-' }}</text>
          <text class="t-td flex2">{{ formatDate(item.start_time) }}</text>
          <text class="t-td flex2">{{ formatDate(item.expire_time) }}</text>
          <text class="t-td flex1">
            <text :class="statusBadge(item.status)">{{ statusText(item.status) }}</text>
          </text>
          <text class="t-td flex1">
            <text class="action-link" @click="onDetail(item)">详情</text>
            <text class="action-link" v-if="item.status === 1" @click="onExtend(item)">延期</text>
            <text class="action-link" v-if="item.status === 1" @click="onCancel(item)">取消</text>
            <text class="action-link" v-if="item.status === 2 || item.status === 3" @click="onRenew(item)">续费</text>
          </text>
        </view>
      </template>
    </DataTable>

    <view class="empty-state" v-if="records.length === 0">暂无数据</view>

    <ConfirmModal
      :visible="showCreate"
      title="创建订阅"
      confirmText="创建"
      :loading="creating"
      @close="showCreate = false"
      @confirm="onCreate"
    >
      <view class="form-group">
        <text class="form-label">用户ID</text>
        <input class="form-input" v-model="createForm.user_id" placeholder="输入用户ID" />
      </view>
      <view class="form-group">
        <text class="form-label">方案</text>
        <select v-model="createForm.plan" class="form-input">
          <option value="monthly">月卡 (30天)</option>
          <option value="yearly">年卡 (365天)</option>
        </select>
      </view>
      <view class="form-group">
        <text class="form-label">天数</text>
        <input class="form-input" v-model="createForm.days" placeholder="订阅天数" type="number" />
      </view>
    </ConfirmModal>
  </view>
</template>

<script>
import { get, post } from '../utils/request'
import { exportCSV } from '../utils/export'
import { formatDateShort } from '../utils/format'
import { listMixin } from '../utils/useList'
import DataTable from '../components/DataTable.vue'
import ConfirmModal from '../components/ConfirmModal.vue'

var PLAN_MAP = { monthly: '月卡', quarterly: '季卡', yearly: '年卡', trial: '试用' }
var STATUS_TEXT = { 1: '生效中', 2: '已过期', 3: '已取消' }
var STATUS_BADGE = { 1: 'badge badge-success', 2: 'badge badge-error', 3: 'badge badge-default' }

export default {
  name: 'SubscriptionView',
  components: { DataTable, ConfirmModal },
  mixins: [listMixin('/api/v1/admin/subscriptions')],
  data() {
    return {
      stats: {},
      activeTab: 'all',
      columns: [
        { key: 'user', label: '用户', flex: 2 },
        { key: 'plan', label: '订阅类型', flex: 1 },
        { key: 'amount', label: '订单金额', flex: 1 },
        { key: 'start', label: '开始日期', flex: 2 },
        { key: 'expire', label: '到期日期', flex: 2 },
        { key: 'status', label: '状态', flex: 1 },
        { key: 'actions', label: '操作', flex: 1 }
      ],
      showCreate: false,
      creating: false,
      createForm: { user_id: '', plan: 'monthly', days: 30 }
    }
  },
  mounted() {
    this.reload()
  },
  methods: {
    reload() {
      this.loadList({ tab: this.activeTab })
    },
    onListLoaded(data) {
      if (data.stats) this.stats = data.stats
    },
    onTabFilter(tab) {
      this.activeTab = tab
      this.page = 1
      this.reload()
    },
    async onCreate() {
      this.creating = true
      try {
        await post('/api/v1/admin/subscriptions', {
          user_id: String(this.createForm.user_id).trim(),
          plan: this.createForm.plan,
          days: parseInt(this.createForm.days)
        })
        this.showCreate = false
        this.reload()
        uni.showToast({ title: '创建成功', icon: 'success' })
      } catch (e) {
        uni.showToast({ title: '创建失败', icon: 'none' })
      } finally {
        this.creating = false
      }
    },
    onDetail(item) {
      if (item.user_id) {
        this.$emit('navigate', 'user-detail', { user_id: String(item.user_id) })
      }
    },
    onExtend(item) {
      var self = this
      uni.showModal({
        title: '延期订阅',
        content: '为用户 #' + item.user_id + ' 延期 30 天？',
        success: async function (res) {
          if (res.confirm) {
            try {
              await post('/api/v1/admin/subscriptions', {
                user_id: String(item.user_id),
                plan: item.plan || 'monthly',
                days: 30
              })
              uni.showToast({ title: '延期成功', icon: 'success' })
              self.reload()
            } catch (e) {
              uni.showToast({ title: '操作失败', icon: 'none' })
            }
          }
        }
      })
    },
    onCancel(item) {
      var self = this
      uni.showModal({
        title: '取消订阅',
        content: '确定要取消用户 #' + item.user_id + ' 的订阅吗？',
        success: async function (res) {
          if (res.confirm) {
            try {
              await post('/api/v1/admin/subscriptions/cancel', {
                subscription_id: item.subscription_id
              })
              uni.showToast({ title: '已取消', icon: 'success' })
              self.reload()
            } catch (e) {
              uni.showToast({ title: '操作失败', icon: 'none' })
            }
          }
        }
      })
    },
    onRenew(item) {
      this.createForm.user_id = String(item.user_id || '')
      this.createForm.plan = item.plan || 'monthly'
      this.createForm.days = 30
      this.showCreate = true
    },
    planText(plan) { return PLAN_MAP[plan] || plan || '-' },
    statusText(status) { return STATUS_TEXT[status] || '-' },
    statusBadge(status) { return STATUS_BADGE[status] || 'badge badge-default' },
    formatDate: formatDateShort,
    async onExport() {
      try {
        var data = await get('/api/v1/admin/subscriptions', { page: 1, page_size: 9999, tab: this.activeTab })
        var records = data.records || []
        exportCSV('subscriptions_' + new Date().toISOString().slice(0, 10) + '.csv',
          ['用户', '订阅类型', '订单金额', '开始日期', '到期日期', '状态'],
          records.map(function (r) {
            return [r.nickname || r.user_id || '', PLAN_MAP[r.plan] || r.plan || '', r.amount || '', r.start_time ? String(r.start_time).slice(0, 10) : '', r.expire_time ? String(r.expire_time).slice(0, 10) : '', STATUS_TEXT[r.status] || '']
          })
        )
        uni.showToast({ title: '导出成功', icon: 'success' })
      } catch (e) {
        uni.showToast({ title: '导出失败', icon: 'none' })
      }
    }
  }
}
</script>

<style scoped>
@import '../styles/common.css';

.stats-row {
  display: flex;
  gap: 16px;
}

.stat-item {
  flex: 1;
  background: #fff;
  border-radius: 8px;
  padding: 16px;
  text-align: center;
  border: 1px solid #f0f0f0;
}

.stat-value {
  display: block;
  font-size: 22px;
  font-weight: 700;
  color: #333;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 13px;
  color: #999;
}

.tabs {
  display: flex;
  gap: 0;
  margin-bottom: 16px;
  border-bottom: 1px solid #f0f0f0;
}

.tab {
  padding: 10px 20px;
  font-size: 14px;
  color: #666;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}

.tab.active {
  color: #E6508C;
  border-bottom-color: #E6508C;
  font-weight: 500;
}

.action-link {
  margin-right: 8px;
}
</style>
