<script setup lang="ts">
import { onMounted, ref } from 'vue'
import { ElMessage, ElMessageBox } from 'element-plus'

import {
  fetchAdminWithdrawals,
  reviewWithdrawal,
  confirmPayment,
  type WithdrawalDetail,
} from '@/features/admin/api/adminWithdrawal'
import { formatCent } from '@/shared/utils/money'

import WithdrawalDetailDialog from '../components/WithdrawalDetailDialog.vue'

const loading = ref(false)
const withdrawals = ref<WithdrawalDetail[]>([])
const total = ref(0)
const currentPage = ref(1)
const pageSize = ref(20)

const filters = ref({
  status: '',
  user_id: undefined as number | undefined,
})

const showDetailDialog = ref(false)
const selectedWithdrawal = ref<WithdrawalDetail | null>(null)

const statusOptions = [
  { label: '全部', value: '' },
  { label: '待审核', value: 'pending' },
  { label: '处理中', value: 'processing' },
  { label: '已完成', value: 'completed' },
  { label: '已拒绝', value: 'rejected' },
  { label: '已取消', value: 'cancelled' },
]

onMounted(() => {
  loadWithdrawals()
})

async function loadWithdrawals() {
  loading.value = true
  try {
    const result = await fetchAdminWithdrawals({
      status: filters.value.status || undefined,
      user_id: filters.value.user_id,
      page: currentPage.value,
      page_size: pageSize.value,
    })
    withdrawals.value = result.items
    total.value = result.total
  } catch (error: any) {
    ElMessage.error(error.response?.data?.message || '加载失败')
  } finally {
    loading.value = false
  }
}

function handleFilter() {
  currentPage.value = 1
  loadWithdrawals()
}

function openDetail(withdrawal: WithdrawalDetail) {
  selectedWithdrawal.value = withdrawal
  showDetailDialog.value = true
}

async function handleReview(withdrawal: WithdrawalDetail, approved: boolean) {
  const action = approved ? '通过' : '拒绝'
  try {
    const { value: remark } = await ElMessageBox.prompt(
      `请输入${action}原因（可选）`,
      `${action}审核`,
      {
        confirmButtonText: `确认${action}`,
        cancelButtonText: '取消',
        inputType: 'textarea',
        inputPlaceholder: '输入备注信息...',
      }
    )

    await reviewWithdrawal(withdrawal.id, {
      approved,
      remark: remark || '',
    })

    ElMessage.success(`审核${action}`)
    await loadWithdrawals()
  } catch (error: any) {
    if (error !== 'cancel') {
      ElMessage.error(error.response?.data?.message || '操作失败')
    }
  }
}

async function handleConfirmPayment(withdrawal: WithdrawalDetail) {
  try {
    const { value: remark } = await ElMessageBox.prompt(
      '请输入打款备注（如：已通过支付宝转账）',
      '确认打款',
      {
        confirmButtonText: '确认完成',
        cancelButtonText: '取消',
        inputType: 'textarea',
        inputPlaceholder: '输入打款备注...',
        inputValidator: value => {
          return value && value.trim().length > 0
        },
        inputErrorMessage: '请输入打款备注',
      }
    )

    await confirmPayment(withdrawal.id, {
      remark: remark || '',
    })

    ElMessage.success('打款完成')
    await loadWithdrawals()
  } catch (error: any) {
    if (error !== 'cancel') {
      ElMessage.error(error.response?.data?.message || '操作失败')
    }
  }
}

function statusLabel(status: string) {
  const labels: Record<string, string> = {
    pending: '待审核',
    processing: '处理中',
    completed: '已完成',
    rejected: '已拒绝',
    cancelled: '已取消',
  }
  return labels[status] || status
}

function statusType(status: string) {
  const types: Record<string, 'success' | 'warning' | 'danger' | 'info' | 'primary'> = {
    pending: 'warning',
    processing: 'primary',
    completed: 'success',
    rejected: 'danger',
    cancelled: 'info',
  }
  return types[status] || 'info'
}

function accountTypeLabel(type: string) {
  const labels: Record<string, string> = {
    alipay: '支付宝',
    wechat: '微信',
    bank: '银行卡',
  }
  return labels[type] || type
}

function onDetailDialogSaved() {
  showDetailDialog.value = false
  loadWithdrawals()
}
</script>

<template>
  <section class="page">
    <div class="page-header-row">
      <div class="page-header">
        <p class="eyebrow">Withdrawals</p>
        <h1>提现管理</h1>
        <p>审核用户提现申请并确认打款</p>
      </div>
      <div class="toolbar-actions">
        <el-button @click="loadWithdrawals">刷新</el-button>
      </div>
    </div>

    <!-- 筛选器 -->
    <el-card shadow="never" style="margin-bottom: 16px">
      <el-form :model="filters" inline>
        <el-form-item label="状态">
          <el-select
            v-model="filters.status"
            placeholder="全部"
            style="width: 150px"
            @change="handleFilter"
          >
            <el-option
              v-for="opt in statusOptions"
              :key="opt.value"
              :label="opt.label"
              :value="opt.value"
            />
          </el-select>
        </el-form-item>
        <el-form-item label="用户ID">
          <el-input
            v-model.number="filters.user_id"
            placeholder="输入用户ID"
            style="width: 150px"
            clearable
            @clear="handleFilter"
          />
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="handleFilter"> 查询 </el-button>
        </el-form-item>
      </el-form>
    </el-card>

    <!-- 提现列表 -->
    <el-table v-loading="loading" class="table-panel" :data="withdrawals">
      <el-table-column prop="id" label="ID" width="70" />
      <el-table-column prop="withdraw_no" label="提现单号" min-width="180" />
      <el-table-column label="用户" min-width="140">
        <template #default="{ row }">
          <div>{{ row.user_nickname }}</div>
          <div style="font-size: 12px; color: #999">{{ row.user_phone }}</div>
        </template>
      </el-table-column>
      <el-table-column label="提现金额" width="120" align="right">
        <template #default="{ row }">
          <span style="color: #f56c6c; font-weight: 600"> ¥{{ formatCent(row.amount_cent) }} </span>
        </template>
      </el-table-column>
      <el-table-column label="收款方式" min-width="180">
        <template #default="{ row }">
          <div>
            <el-tag size="small" style="margin-right: 4px">
              {{ accountTypeLabel(row.account_type) }}
            </el-tag>
            {{ row.account_name }}
          </div>
          <div style="font-size: 12px; color: #666; margin-top: 4px">
            {{ row.account_no }}
          </div>
        </template>
      </el-table-column>
      <el-table-column label="状态" width="100">
        <template #default="{ row }">
          <el-tag :type="statusType(row.status)">
            {{ statusLabel(row.status) }}
          </el-tag>
        </template>
      </el-table-column>
      <el-table-column label="申请时间" width="160">
        <template #default="{ row }">
          {{ new Date(row.created_at).toLocaleString('zh-CN') }}
        </template>
      </el-table-column>
      <el-table-column label="操作" width="240" fixed="right">
        <template #default="{ row }">
          <el-button size="small" @click="openDetail(row)"> 详情 </el-button>
          <el-button
            v-if="row.status === 'pending'"
            size="small"
            type="success"
            @click="handleReview(row, true)"
          >
            通过
          </el-button>
          <el-button
            v-if="row.status === 'pending'"
            size="small"
            type="danger"
            @click="handleReview(row, false)"
          >
            拒绝
          </el-button>
          <el-button
            v-if="row.status === 'processing'"
            size="small"
            type="primary"
            @click="handleConfirmPayment(row)"
          >
            确认打款
          </el-button>
        </template>
      </el-table-column>
    </el-table>

    <el-pagination
      v-if="total > pageSize"
      v-model:current-page="currentPage"
      v-model:page-size="pageSize"
      :total="total"
      :page-sizes="[10, 20, 50, 100]"
      layout="total, sizes, prev, pager, next, jumper"
      style="margin-top: 16px; justify-content: center"
      @size-change="loadWithdrawals"
      @current-change="loadWithdrawals"
    />

    <!-- 详情对话框 -->
    <WithdrawalDetailDialog
      v-model="showDetailDialog"
      :withdrawal="selectedWithdrawal"
      @saved="onDetailDialogSaved"
    />
  </section>
</template>

<style scoped>
.page {
  padding: 24px;
}

.page-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 24px;
}

.page-header {
  flex: 1;
}

.eyebrow {
  margin: 0 0 8px;
  color: #909399;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.page-header h1 {
  margin: 0 0 8px;
  font-size: 28px;
  font-weight: 600;
}

.page-header p {
  margin: 0;
  color: #666;
}

.toolbar-actions {
  display: flex;
  gap: 8px;
}

.table-panel {
  background: #fff;
  border-radius: 8px;
}
</style>
