import React, { useCallback, useEffect, useMemo, useState } from 'react';
import {
  Alert, Button, Card, Col, DatePicker, Descriptions, Drawer, Dropdown, Input, Row, Select,
  Space, Spin, Statistic, Table, Tabs, Tag, Typography, message,
} from 'antd';
import { DownloadOutlined, ReloadOutlined, SearchOutlined } from '@ant-design/icons';
import dayjs from 'dayjs';
import { SycmPage } from '../../components/Common';
import { getOpsBIncentiveBatches, getOpsBIncentiveBoard, getOpsBIncentiveDaily } from '../../api/planningUpload';
import { exportTableFile } from '../../utils/tableExport';
import './opsBIncentiveBoard.css';

const { Title, Text } = Typography;
const FALLBACK_BATCH = { key: 'ops-b-20260715-20260721', batchNo: 1, scopeStart: '2026-07-15', scopeEnd: '2026-07-21', pullDate: '2026-08-29', feeCap: 0.9 };
const batchLabel = (item) => {
  const mmdd = (value) => dayjs(value).format('MM-DD');
  const cap = `${parseFloat((Number(item.feeCap) * 100).toFixed(1))}%`;
  return `第${item.batchNo}批（${mmdd(item.scopeStart)} 至 ${mmdd(item.scopeEnd)} · 拉取 ${mmdd(item.pullDate)} · 费比≤${cap}）${item.finalized ? ' · 已定档' : ''}`;
};

const number = (value, digits = 2) => value === null || value === undefined || value === ''
  ? '--' : Number(value).toLocaleString('zh-CN', { minimumFractionDigits: digits, maximumFractionDigits: digits });
const money = (value) => value === null || value === undefined ? '--' : `¥${number(value)}`;
const percent = (value) => value === null || value === undefined ? '--' : `${(Number(value) * 100).toFixed(2)}%`;
const dateText = (value) => value ? dayjs(value).format('YYYY-MM-DD') : '--';

const OpsBIncentiveBoardPanel = () => {
  const [batches, setBatches] = useState([]);
  const [batch, setBatch] = useState(FALLBACK_BATCH.key);
  const [metricEnd, setMetricEnd] = useState(dayjs(FALLBACK_BATCH.pullDate));
  const [filters, setFilters] = useState({ ider: '', shopName: '', spu: '', goodsId: '' });
  const [data, setData] = useState({ rows: [], ownerSummary: [], summary: {} });
  const [loading, setLoading] = useState(false);
  const [error, setError] = useState('');
  const [selected, setSelected] = useState(null);
  const [dailyRows, setDailyRows] = useState([]);
  const [dailyLoading, setDailyLoading] = useState(false);

  const selectedBatch = useMemo(
    () => batches.find((item) => item.key === batch) || FALLBACK_BATCH,
    [batches, batch]
  );

  useEffect(() => {
    let cancelled = false;
    getOpsBIncentiveBatches()
      .then((result) => {
        const list = result?.data?.data || result?.data || [];
        if (cancelled || !Array.isArray(list) || !list.length) return;
        setBatches(list);
        if (!list.some((item) => item.key === FALLBACK_BATCH.key)) {
          setBatch(list[0].key);
          setMetricEnd(dayjs(list[0].pullDate));
        }
      })
      .catch(() => {});
    return () => { cancelled = true; };
  }, []);

  const query = useMemo(() => ({
    scopeStart: selectedBatch.scopeStart,
    scopeEnd: selectedBatch.scopeEnd,
    metricEnd: metricEnd?.format('YYYY-MM-DD') || selectedBatch.pullDate,
    ...filters,
  }), [selectedBatch, metricEnd, filters]);

  const changeBatch = (value) => {
    setBatch(value);
    const next = batches.find((item) => item.key === value);
    if (next) setMetricEnd(dayjs(next.pullDate));
  };

  const load = useCallback(async () => {
    setLoading(true); setError('');
    try {
      const result = await getOpsBIncentiveBoard(query);
      setData(result?.data || result || { rows: [], ownerSummary: [], summary: {} });
    } catch (requestError) {
      setError(requestError?.message || '加载运营中心B看板失败');
    } finally { setLoading(false); }
  }, [query]);

  useEffect(() => { load(); }, [load]);

  const openDetail = async (record) => {
    setSelected(record); setDailyRows([]); setDailyLoading(true);
    try {
      const result = await getOpsBIncentiveDaily({ ...query, goodsId: record.goodsId });
      setDailyRows(result?.data?.rows || result?.rows || []);
    } catch (requestError) {
      message.error(requestError?.message || '加载每日明细失败');
    } finally { setDailyLoading(false); }
  };

  const iderOptions = useMemo(() => [...new Set((data.rows || []).map((row) => row.ider).filter(Boolean))].map((value) => ({ value, label: value })), [data.rows]);
  const shopOptions = useMemo(() => [...new Set((data.rows || []).map((row) => row.shopName).filter(Boolean))].map((value) => ({ value, label: value })), [data.rows]);
  // 分组：0=动销率与费比均达标，1=仅一项达标，2=均不达标；组内按动销率降序。
  const sortedRows = useMemo(() => [...(data.rows || [])].sort((a, b) => {
    const group = (row) => (row.bonusQualified ? 0 : (row.feeQualified || row.sellThroughQualified ? 1 : 2));
    const rate = (row) => (row.sellThroughRate30d === null || row.sellThroughRate30d === undefined ? -1 : row.sellThroughRate30d);
    return group(a) - group(b) || rate(b) - rate(a) || String(a.goodsId).localeCompare(String(b.goodsId));
  }), [data.rows]);
  const num = (value) => (value === null || value === undefined || value === '' ? -Infinity : Number(value));
  const qualifyFilters = [
    { text: '达标', value: 'yes' },
    { text: '未达标', value: 'no' },
  ];
  const qualifyFilter = (field) => ({
    filters: qualifyFilters,
    onFilter: (value, row) => (value === 'yes' ? Boolean(row[field]) : !row[field]),
  });
  const columns = [
    { title: 'ID负责人', dataIndex: 'ider', fixed: 'left', width: 100 },
    { title: '商品ID', dataIndex: 'goodsId', fixed: 'left', width: 130, render: (value, row) => <Button type="link" className="ops-b-id-link" onClick={() => openDetail(row)}>{value}</Button> },
    { title: '商品名称', dataIndex: 'goodsName', width: 220, ellipsis: true },
    { title: '店铺名称', dataIndex: 'shopName', width: 150, ellipsis: true },
    { title: 'SPU', dataIndex: 'spu', width: 120 },
    { title: '链接类型', dataIndex: 'linkType', width: 100 },
    { title: '状态', dataIndex: 'status', width: 80, render: (v) => <Tag color={v === '在售' ? 'green' : 'default'}>{v}</Tag> },
    { title: 'SKU数', dataIndex: 'skuCount', width: 80, align: 'right', sorter: (a, b) => num(a.skuCount) - num(b.skuCount) },
    { title: '上架时间', dataIndex: 'firstCreatedAt', width: 120, render: dateText, exportValue: dateText },
    { title: '上架天数', dataIndex: 'listingDays', width: 90, align: 'right', sorter: (a, b) => num(a.listingDays) - num(b.listingDays), render: (v) => number(v, 0) },
    { title: '近30天ID动销率', dataIndex: 'sellThroughRate30d', width: 130, align: 'right', sorter: (a, b) => num(a.sellThroughRate30d) - num(b.sellThroughRate30d), render: percent, exportValue: percent },
    { title: '动销率是否达标', dataIndex: 'sellThroughQualified', width: 120, ...qualifyFilter('sellThroughQualified'), render: (v) => <Tag color={v ? 'green' : 'red'}>{v ? '达标' : '未达标'}</Tag>, exportValue: (v) => (v ? '达标' : '未达标') },
    { title: '近30天费比', dataIndex: 'feeRatio30d', width: 110, align: 'right', sorter: (a, b) => num(a.feeRatio30d) - num(b.feeRatio30d), render: percent, exportValue: percent },
    { title: '费比是否达标', dataIndex: 'feeQualified', width: 105, ...qualifyFilter('feeQualified'), render: (v) => <Tag color={v ? 'green' : 'red'}>{v ? '达标' : '未达标'}</Tag>, exportValue: (v) => (v ? '达标' : '未达标') },
    { title: '近30天真实业绩', dataIndex: 'performance30d', width: 135, align: 'right', sorter: (a, b) => num(a.performance30d) - num(b.performance30d), render: money },
    { title: '近30天真实费用', dataIndex: 'fee30d', width: 135, align: 'right', sorter: (a, b) => num(a.fee30d) - num(b.fee30d), render: money },
    { title: '近30天发货件数', dataIndex: 'goodsCount30d', width: 125, align: 'right', sorter: (a, b) => num(a.goodsCount30d) - num(b.goodsCount30d), render: (v) => number(v, 0) },
    { title: '近30天发货天数', dataIndex: 'shippedDays30d', width: 125, align: 'right', sorter: (a, b) => num(a.shippedDays30d) - num(b.shippedDays30d), render: (v) => number(v, 0) },
    { title: '应发奖金', dataIndex: 'bonus', width: 100, align: 'right', sorter: (a, b) => num(a.bonus) - num(b.bonus), render: money },
  ];

  const ownerSummaryColumns = [
    { title: 'ID负责人', dataIndex: 'ider' },
    { title: '商品ID数', dataIndex: 'goodsIdCount' },
    { title: '近30天发货件数', dataIndex: 'goodsCount30d', render: (v) => number(v, 0) },
    { title: '费比达标', dataIndex: 'feeQualifiedCount' },
    { title: '奖金达标', dataIndex: 'bonusQualifiedCount' },
    { title: '应发奖金', dataIndex: 'bonus', render: money },
  ];

  const exportFileName = (label) => (
    `激励看板_${label}_${selectedBatch.scopeStart}_${selectedBatch.scopeEnd}_统计至${metricEnd?.format('YYYYMMDD') || '最新'}`
  );

  const handleExport = async (scope, format) => {
    const isSummary = scope === 'summary';
    const exportColumns = isSummary ? ownerSummaryColumns : columns;
    const exportRows = isSummary ? (data.ownerSummary || []) : sortedRows;
    if (!exportRows.length) {
      message.warning(isSummary ? '负责人汇总暂无数据可导出' : 'ID核心明细暂无数据可导出');
      return;
    }
    try {
      await exportTableFile(format, exportFileName(isSummary ? '负责人汇总' : 'ID核心明细'), exportColumns, exportRows, isSummary ? '负责人汇总' : 'ID核心明细');
      message.success(`已导出 ${exportRows.length} 条数据（${format.toUpperCase()}）`);
    } catch (exportError) {
      message.error(exportError?.message || '导出失败');
    }
  };

  const exportDropdown = (scope) => (
    <Dropdown menu={{
      items: [
        { key: 'xlsx', label: '导出 XLSX' },
        { key: 'csv', label: '导出 CSV' },
      ],
      onClick: ({ key }) => handleExport(scope, key),
    }}>
      <Button icon={<DownloadOutlined />}>导出</Button>
    </Dropdown>
  );

  const summary = data.summary || {};
  return (
    <>
      <Card className="ops-b-filter-card" bordered={false}>
        <Space wrap size={[12, 12]}>
          <Select
            value={batch}
            options={(batches.length ? batches : [FALLBACK_BATCH]).map((item) => ({ value: item.key, label: batchLabel(item) }))}
            onChange={changeBatch}
            style={{ width: 360 }}
          />
          <DatePicker value={metricEnd} allowClear={false} onChange={setMetricEnd} placeholder="统计截止日" />
          <Select allowClear showSearch placeholder="ID负责人" options={iderOptions} value={filters.ider || undefined} onChange={(value) => setFilters((old) => ({ ...old, ider: value || '' }))} style={{ width: 150 }} />
          <Select allowClear showSearch placeholder="店铺名称" options={shopOptions} value={filters.shopName || undefined} onChange={(value) => setFilters((old) => ({ ...old, shopName: value || '' }))} style={{ width: 180 }} />
          <Input allowClear prefix={<SearchOutlined />} placeholder="SPU" value={filters.spu} onChange={(e) => setFilters((old) => ({ ...old, spu: e.target.value }))} style={{ width: 150 }} />
          <Input allowClear prefix={<SearchOutlined />} placeholder="商品ID" value={filters.goodsId} onChange={(e) => setFilters((old) => ({ ...old, goodsId: e.target.value }))} style={{ width: 170 }} />
          <Button icon={<ReloadOutlined />} onClick={load} loading={loading}>刷新数据</Button>
        </Space>
      </Card>
      {error ? <Alert type="error" showIcon message={error} action={<Button size="small" onClick={load}>重试</Button>} /> : null}
      <Row gutter={[12, 12]} className="ops-b-summary-row">
        <Col xs={12} md={6}><Card bordered={false} className="ops-b-summary-card is-blue"><Statistic title="商品ID数" value={summary.goodsIdCount || 0} /></Card></Col>
        <Col xs={12} md={6}><Card bordered={false} className="ops-b-summary-card is-green"><Statistic title="费比达标ID" value={summary.feeQualifiedCount || 0} /></Card></Col>
        <Col xs={12} md={6}><Card bordered={false} className="ops-b-summary-card is-orange"><Statistic title="动销率 > 30%" value={summary.sellThroughQualifiedCount || 0} /></Card></Col>
        <Col xs={12} md={6}><Card bordered={false} className="ops-b-summary-card is-gold"><Statistic title="应发奖金" value={summary.bonus || 0} prefix="¥" precision={2} /></Card></Col>
      </Row>
      <Card bordered={false} className="ops-b-panel" title="负责人汇总" extra={exportDropdown('summary')}>
        <Table rowKey="ider" size="small" pagination={false} dataSource={data.ownerSummary || []} columns={ownerSummaryColumns} />
      </Card>
      <Card bordered={false} className="ops-b-panel" title={`ID核心明细（${(data.rows || []).length} 条）`} extra={exportDropdown('detail')}>
        <Spin spinning={loading} tip="正在加载运营中心B数据…"><Table rowKey="goodsId" size="small" columns={columns} dataSource={sortedRows} pagination={false} scroll={{ x: 2400, y: 'min(520px, calc(100vh - 460px))' }} /></Spin>
      </Card>
      <Drawer className="ops-b-detail-drawer" title={selected ? `${selected.goodsId} · 每日发货明细` : '每日发货明细'} width={760} open={Boolean(selected)} onClose={() => setSelected(null)}>
        {selected ? <><Descriptions size="small" bordered column={2} items={[{ key: 'name', label: '商品名称', children: selected.goodsName || '--' }, { key: 'owner', label: '负责人', children: selected.ider || '--' }, { key: 'fee', label: '近30天费比', children: percent(selected.feeRatio30d) }, { key: 'bonus', label: '奖金状态', children: selected.bonusQualified ? <Tag color="gold">达标 ¥{AWARD}</Tag> : <Tag>未达标</Tag> }]} /><Table className="ops-b-daily-table" loading={dailyLoading} rowKey="statDate" size="small" pagination={false} dataSource={dailyRows} columns={[{ title: '日期', dataIndex: 'statDate', render: dateText }, { title: '发货件数', dataIndex: 'goodsCount', align: 'right', render: (v) => number(v, 0) }, { title: '是否动销', dataIndex: 'isActive' }, { title: '真实业绩', dataIndex: 'realPerformance', align: 'right', render: money }, { title: '真实费用', dataIndex: 'realFee', align: 'right', render: money }]} /></> : null}
      </Drawer>
    </>
  );
};

const OpsBIncentiveBoard = () => (
  <SycmPage className="ops-b-incentive-page">
    <header className="ops-b-header">
      <div className="ops-b-header__heading">
        <Title level={3}>激励看板</Title>
        <Text type="secondary">按中心切换查看商品激励奖金、费比与动销达成情况</Text>
      </div>
    </header>
    <Tabs
      className="ops-b-tabs"
      defaultActiveKey="ops-b"
      items={[
        { key: 'ops-b', label: '运营中心B', children: <OpsBIncentiveBoardPanel /> },
      ]}
    />
  </SycmPage>
);

const AWARD = 400;
export default OpsBIncentiveBoard;