import { Banner, Button, Card, Descriptions, Form, Select, Space, Table, Tabs, Tag, Toast, Typography } from '@douyinfe/semi-ui';
import { IconRefresh, IconSearch } from '@douyinfe/semi-icons';
import { useEffect, useMemo, useRef, useState } from 'react';
import { api } from '../api/client';
import type { QualityIssueRow, VehicleDetail as VehicleDetailData, VehicleSourceStatus } from '../api/types';
import { PageHeader } from '../components/PageHeader';
import { StatusTag } from '../components/StatusTag';
import { isLikelyVIN } from '../domain/vehicleLookup';

type VehicleQuery = {
  keyword: string;
  protocol?: string;
};

const sourceCapabilities: Array<{ key: keyof Pick<VehicleSourceStatus, 'hasRealtime' | 'hasHistory' | 'hasRaw' | 'hasMileage'>; label: string }> = [
  { key: 'hasRealtime', label: '实时' },
  { key: 'hasHistory', label: '历史' },
  { key: 'hasRaw', label: 'RAW' },
  { key: 'hasMileage', label: '里程' }
];

const coverageStatusText: Record<string, string> = {
  online: '全部在线',
  partial: '部分在线',
  offline: '全部离线',
  no_data: '暂无来源'
};

function isFiniteNumber(value: unknown): value is number {
  return typeof value === 'number' && Number.isFinite(value);
}

function formatCompactNumber(value?: number, suffix = '') {
  if (!isFiniteNumber(value)) return '-';
  return `${value.toLocaleString(undefined, { maximumFractionDigits: 1 })}${suffix}`;
}

function parseTimeMs(value?: string) {
  if (!value) return undefined;
  const ms = Date.parse(value);
  return Number.isFinite(ms) ? ms : undefined;
}

function formatSeconds(value?: number) {
  if (!isFiniteNumber(value)) return '-';
  return `${Math.round(value)} 秒`;
}

export function VehicleDetail({
  vin,
  protocol,
  onOpenHistory,
  onOpenMileage,
  onQueryChange
}: {
  vin: string;
  protocol?: string;
  onOpenHistory: (vin: string, protocol?: string) => void;
  onOpenMileage: (vin: string, protocol?: string) => void;
  onQueryChange?: (keyword: string, protocol?: string) => void;
}) {
  const [query, setQuery] = useState<VehicleQuery>({ keyword: vin, protocol });
  const [detail, setDetail] = useState<VehicleDetailData | null>(null);
  const [loading, setLoading] = useState(false);
  const requestSeq = useRef(0);

  const load = (nextQuery = query) => {
    const keyword = nextQuery.keyword.trim();
    if (!keyword) {
      Toast.warning('请输入 VIN / 车牌 / 手机号');
      return;
    }
    setLoading(true);
    const params = new URLSearchParams({ keyword });
    if (nextQuery.protocol?.trim()) {
      params.set('protocol', nextQuery.protocol.trim());
    }
    const seq = requestSeq.current + 1;
    requestSeq.current = seq;
    api.vehicleDetail(params)
      .then((nextDetail) => {
        if (requestSeq.current === seq) {
          setDetail(nextDetail);
        }
      })
      .catch((error: Error) => {
        if (requestSeq.current === seq) {
          Toast.error(error.message);
        }
      })
      .finally(() => {
        if (requestSeq.current === seq) {
          setLoading(false);
        }
      });
  };

  useEffect(() => {
    const nextQuery = { keyword: vin, protocol };
    setQuery(nextQuery);
    load(nextQuery);
  }, [vin, protocol]);

  const identity = detail?.identity;
  const summary = detail?.realtimeSummary;
  const latest = detail?.realtime?.[0];
  const resolution = detail?.resolution;
  const overview = detail?.serviceOverview;
  const resolvedVIN = resolution?.vin || detail?.vin || summary?.vin || identity?.vin || latest?.vin || query.keyword;
  const hasResolvedVIN = resolution?.resolved ?? detail?.lookupResolved ?? isLikelyVIN(resolvedVIN);
  const displayVIN = hasResolvedVIN ? resolvedVIN : '-';
  const displayLookupKey = resolution?.lookupKey || detail?.lookupKey || query.keyword;
  const protocols = useMemo(() => resolution?.protocols?.length ? resolution.protocols : detail?.sources ?? [], [detail?.sources, resolution?.protocols]);
  const latestRaw = detail?.raw?.items?.[0];
  const qualityCount = detail?.quality?.total ?? 0;
  const online = resolution?.online || summary?.online || identity?.online || false;
  const lastSeen = resolution?.lastSeen || summary?.lastSeen || latest?.lastSeen || '-';
  const serviceStatus = detail?.serviceStatus;
  const realtimeRows = detail?.realtime ?? [];
  const realtimeSources = new Set(realtimeRows.map((row) => row.protocol).filter(Boolean));
  const sourceCount = Math.max(detail?.sourceStatus?.length ?? 0, realtimeSources.size, summary?.sourceCount ?? 0, protocols.length);
  const onlineSourceCount = detail?.sourceStatus?.length
    ? detail.sourceStatus.filter((source) => source.online).length
    : summary?.onlineSourceCount ?? 0;
  const locatedSourceCount = realtimeRows.filter((row) => isFiniteNumber(row.longitude) && isFiniteNumber(row.latitude)).length;
  const mileageValues = realtimeRows.map((row) => row.totalMileageKm).filter(isFiniteNumber);
  const mileageDelta = mileageValues.length > 1 ? Math.max(...mileageValues) - Math.min(...mileageValues) : undefined;
  const timeValues = [
    ...realtimeRows.map((row) => parseTimeMs(row.lastSeen)),
    ...(detail?.sourceStatus ?? []).map((source) => parseTimeMs(source.lastSeen))
  ].filter(isFiniteNumber);
  const sourceTimeDeltaSeconds = timeValues.length > 1 ? (Math.max(...timeValues) - Math.min(...timeValues)) / 1000 : undefined;
  const consistency = detail?.sourceConsistency;
  const consistencySourceCount = consistency?.sourceCount ?? sourceCount;
  const consistencyOnlineSourceCount = consistency?.onlineSourceCount ?? onlineSourceCount;
  const consistencyLocatedSourceCount = consistency?.locatedSourceCount ?? locatedSourceCount;
  const consistencyMileageDelta = consistency?.mileageDeltaKm ?? mileageDelta;
  const consistencyTimeDeltaSeconds = consistency?.sourceTimeDeltaSeconds ?? sourceTimeDeltaSeconds;
  const activeProtocol = query.protocol?.trim() ?? '';
  const scopeText = activeProtocol ? `单一来源：${activeProtocol}` : '全部来源聚合';
  const formKey = `${query.keyword}-${query.protocol ?? ''}`;
  const switchSource = (nextProtocol = '') => {
    const nextQuery = { keyword: resolvedVIN || query.keyword, protocol: nextProtocol };
    setQuery(nextQuery);
    onQueryChange?.(nextQuery.keyword, nextQuery.protocol);
    load(nextQuery);
  };
  const qualityTable = (
    <Table
      loading={loading}
      pagination={false}
      rowKey={(row?: QualityIssueRow) => `${row?.protocol ?? ''}-${row?.issueType ?? ''}-${row?.lastSeen ?? ''}`}
      dataSource={detail?.quality?.items ?? []}
      columns={[
        { title: '来源', dataIndex: 'protocol', width: 130 },
        { title: '问题', dataIndex: 'issueType', width: 150 },
        { title: '级别', width: 110, render: (_: unknown, row: QualityIssueRow) => <Tag color={row.severity === 'error' ? 'red' : 'orange'}>{row.severity}</Tag> },
        { title: '最后时间', dataIndex: 'lastSeen', width: 190 },
        { title: '说明', dataIndex: 'detail' }
      ]}
    />
  );

  return (
    <div className="vp-page">
      <PageHeader title="车辆服务" description="以 VIN 为主对象聚合身份、实时、历史、RAW 和里程，协议仅作为数据来源" />
      <Card bordered>
        <Form key={formKey} initValues={query} layout="horizontal" onSubmit={(values) => {
          const nextQuery = { keyword: String(values.keyword ?? ''), protocol: String(values.protocol ?? '') };
          setQuery(nextQuery);
          onQueryChange?.(nextQuery.keyword, nextQuery.protocol);
          load(nextQuery);
        }}>
          <Form.Input field="keyword" label="车辆关键词" placeholder="VIN / 车牌 / 手机号" style={{ width: 280 }} />
          <Form.Select field="protocol" label="数据来源" placeholder="全部来源" style={{ width: 180 }}>
            <Select.Option value="GB32960">GB32960</Select.Option>
            <Select.Option value="JT808">JT808</Select.Option>
            <Select.Option value="YUTONG_MQTT">YUTONG_MQTT</Select.Option>
          </Form.Select>
          <Space>
            <Button icon={<IconSearch />} htmlType="submit" theme="solid" type="primary">查询车辆</Button>
            <Button icon={<IconRefresh />} onClick={() => load(query)} loading={loading}>刷新</Button>
            <Button disabled={!hasResolvedVIN} onClick={() => onOpenHistory(resolvedVIN, activeProtocol)}>查看历史</Button>
            <Button disabled={!hasResolvedVIN} onClick={() => onOpenMileage(resolvedVIN, activeProtocol)}>查看里程</Button>
          </Space>
        </Form>
      </Card>

      <div className="vp-scope-bar">
        <span className="vp-scope-label">当前查看范围</span>
        <Tag color={activeProtocol ? 'blue' : 'green'}>{scopeText}</Tag>
        <Typography.Text type="tertiary">
          {activeProtocol ? '下方实时、历史、RAW 和里程仅展示该来源返回的数据。' : '下方数据按车辆聚合展示全部可用来源。'}
        </Typography.Text>
      </div>

      {serviceStatus ? (
        <div className={`vp-service-status vp-service-status-${serviceStatus.severity}`}>
          <span className="vp-scope-label">车辆服务状态</span>
          <Tag color={serviceStatus.severity === 'ok' ? 'green' : serviceStatus.severity === 'error' ? 'red' : 'orange'}>
            {serviceStatus.title}
          </Tag>
          <Typography.Text type="tertiary">{serviceStatus.detail}</Typography.Text>
        </div>
      ) : null}

      {overview ? (
        <Card bordered title="车辆服务概览" style={{ marginTop: 16 }}>
          <Descriptions
            row
            data={[
              { key: '服务车辆', value: [overview.plate, overview.vin].filter(Boolean).join(' / ') || '-' },
              { key: '在线来源', value: `${overview.onlineSourceCount}/${overview.sourceCount}` },
              { key: '覆盖状态', value: <Tag color={overview.coverageStatus === 'online' ? 'green' : overview.coverageStatus === 'partial' ? 'orange' : 'grey'}>{coverageStatusText[overview.coverageStatus] ?? overview.coverageStatus}</Tag> },
              { key: '主来源', value: overview.primaryProtocol || '-' },
              { key: '最后上报', value: overview.lastSeen || '-' },
              { key: '数据规模', value: `历史 ${overview.historyCount} / RAW ${overview.rawCount} / 里程 ${overview.mileageCount}` },
              { key: '实时来源', value: overview.realtimeCount },
              { key: '质量问题', value: <Tag color={overview.qualityIssueCount > 0 ? 'orange' : 'green'}>{overview.qualityIssueCount}</Tag> }
            ]}
          />
        </Card>
      ) : null}

      <Card bordered style={{ marginTop: 16 }}>
        <div className="vp-vehicle-summary">
          <Descriptions
            row
            data={[
              { key: '查询关键词', value: displayLookupKey },
              { key: 'VIN', value: displayVIN },
              { key: '解析状态', value: <Tag color={hasResolvedVIN ? 'green' : 'orange'}>{hasResolvedVIN ? '已解析 VIN' : '未解析到 VIN'}</Tag> },
              { key: '车牌', value: resolution?.plate || summary?.plate || identity?.plate || latest?.plate || '-' },
              { key: '手机号', value: resolution?.phone || summary?.phone || identity?.phone || '-' },
              { key: 'OEM', value: resolution?.oem || summary?.oem || identity?.oem || '-' },
              { key: '在线', value: <StatusTag status={online ? 'ok' : 'offline'} /> },
              {
                key: '数据来源',
                value: protocols.length > 0 ? <Space>{protocols.map((item) => <Tag key={item} color={item === summary?.primaryProtocol ? 'blue' : 'grey'}>{item}</Tag>)}</Space> : '-'
              },
              { key: '在线来源', value: summary ? `${summary.onlineSourceCount}/${summary.sourceCount}` : '-' },
              { key: '最后位置时间', value: lastSeen },
              { key: '最新 RAW 时间', value: latestRaw?.serverTime ?? '-' },
              { key: '质量问题', value: <Tag color={qualityCount > 0 ? 'orange' : 'green'}>{qualityCount > 0 ? `${qualityCount} 项` : '无'}</Tag> }
            ]}
          />
        </div>
        {!hasResolvedVIN ? (
          <Banner
            type="warning"
            bordered
            title="身份绑定待处理"
            description={`车辆关键词 ${displayLookupKey} 暂未解析到 VIN，请维护车辆身份绑定后再查看历史、里程和跨来源数据。`}
            style={{ marginTop: 12 }}
          />
        ) : null}
      </Card>

      {hasResolvedVIN ? (
        <>
          <Card bordered title="数据来源覆盖" style={{ marginTop: 16 }}>
            {detail?.sourceStatus?.length ? (
              <>
                <div className="vp-source-toolbar">
                  <Space>
                    <Tag color={activeProtocol ? 'grey' : 'blue'}>{activeProtocol ? `当前 ${activeProtocol}` : '当前 全部来源'}</Tag>
                    <Button size="small" disabled={!activeProtocol} onClick={() => switchSource('')}>全部来源</Button>
                  </Space>
                </div>
                <div className="vp-source-grid">
                  {detail.sourceStatus.map((source) => (
                    <div key={source.protocol} className={`vp-source-card${activeProtocol === source.protocol ? ' vp-source-card-active' : ''}`}>
                      <div className="vp-source-card-head">
                        <Space>
                          <Tag color={source.protocol === summary?.primaryProtocol ? 'blue' : 'grey'}>{source.protocol}</Tag>
                          <StatusTag status={source.online ? 'ok' : 'offline'} />
                        </Space>
                        <Typography.Text type="tertiary">{source.lastSeen || '无上报'}</Typography.Text>
                      </div>
                      <Space spacing={4} wrap>
                        {sourceCapabilities.map((item) => (
                          <Tag key={item.key} color={source[item.key] ? 'green' : 'grey'}>
                            {item.label}{source[item.key] ? '有' : '无'}
                          </Tag>
                        ))}
                      </Space>
                      <div className="vp-source-card-actions">
                        <Space spacing={6} wrap>
                          <Button
                            size="small"
                            theme={activeProtocol === source.protocol ? 'solid' : 'light'}
                            type={activeProtocol === source.protocol ? 'primary' : 'tertiary'}
                            disabled={activeProtocol === source.protocol}
                            onClick={() => switchSource(source.protocol)}
                          >
                            仅看 {source.protocol}
                          </Button>
                          <Button
                            size="small"
                            theme="light"
                            type="tertiary"
                            disabled={!source.hasHistory}
                            onClick={() => onOpenHistory(resolvedVIN, source.protocol)}
                          >
                            查看 {source.protocol} 历史
                          </Button>
                          <Button
                            size="small"
                            theme="light"
                            type="tertiary"
                            disabled={!source.hasMileage}
                            onClick={() => onOpenMileage(resolvedVIN, source.protocol)}
                          >
                            查看 {source.protocol} 里程
                          </Button>
                        </Space>
                      </div>
                    </div>
                  ))}
                </div>
              </>
            ) : (
              <Typography.Text type="secondary">暂未查询到该车辆的数据来源覆盖。</Typography.Text>
            )}
          </Card>

          <Card bordered title="跨来源一致性" style={{ marginTop: 16 }}>
            <Descriptions
              row
              data={[
                { key: '来源覆盖', value: consistencySourceCount > 0 ? `${consistencySourceCount} 个来源` : '-' },
                { key: '在线来源', value: consistencySourceCount > 0 ? `${consistencyOnlineSourceCount}/${consistencySourceCount} 在线` : '-' },
                { key: '位置覆盖', value: consistencyLocatedSourceCount > 0 ? `${consistencyLocatedSourceCount} 个来源有位置` : '暂无位置' },
                { key: '里程差异', value: formatCompactNumber(consistencyMileageDelta, ' km') },
                { key: '来源时间差', value: formatSeconds(consistencyTimeDeltaSeconds) },
                { key: '车辆服务视角', value: activeProtocol ? `当前只看 ${activeProtocol}` : '三类来源合并为同一车辆服务' }
              ]}
            />
          </Card>

          <Card bordered title="来源诊断明细" style={{ marginTop: 16 }}>
            <Table
              loading={loading}
              pagination={false}
              rowKey="protocol"
              dataSource={detail?.sourceStatus ?? []}
              columns={[
                { title: '来源', dataIndex: 'protocol', width: 130 },
                { title: '在线', width: 100, render: (_: unknown, row: VehicleSourceStatus) => <StatusTag status={row.online ? 'ok' : 'offline'} /> },
                { title: '最后时间', dataIndex: 'lastSeen', width: 190 },
                { title: '实时', width: 90, render: (_: unknown, row: VehicleSourceStatus) => <Tag color={row.hasRealtime ? 'green' : 'grey'}>{row.hasRealtime ? '有' : '无'}</Tag> },
                { title: '历史', width: 90, render: (_: unknown, row: VehicleSourceStatus) => <Tag color={row.hasHistory ? 'green' : 'grey'}>{row.hasHistory ? '有' : '无'}</Tag> },
                { title: 'RAW', width: 90, render: (_: unknown, row: VehicleSourceStatus) => <Tag color={row.hasRaw ? 'green' : 'grey'}>{row.hasRaw ? '有' : '无'}</Tag> },
                { title: '里程', width: 90, render: (_: unknown, row: VehicleSourceStatus) => <Tag color={row.hasMileage ? 'green' : 'grey'}>{row.hasMileage ? '有' : '无'}</Tag> }
              ]}
            />
          </Card>
        </>
      ) : null}

      {!hasResolvedVIN ? (
        <Card bordered style={{ marginTop: 16 }}>
          <Tabs>
            <Tabs.TabPane tab="质量问题" itemKey="quality">
              {qualityTable}
            </Tabs.TabPane>
          </Tabs>
        </Card>
      ) : (
        <Card bordered style={{ marginTop: 16 }}>
          <Tabs>
          <Tabs.TabPane tab="实时状态" itemKey="realtime">
            <div className="vp-realtime-strip">
              {[
                { label: '最新来源', value: summary?.primaryProtocol || '-' },
                { label: '速度 km/h', value: summary ? summary.speedKmh : '-' },
                { label: 'SOC %', value: summary ? summary.socPercent : '-' },
                { label: '总里程 km', value: summary ? summary.totalMileageKm : '-' },
                { label: '经纬度', value: summary ? `${summary.longitude}, ${summary.latitude}` : '-' },
                { label: '最后时间', value: lastSeen }
              ].map((item) => (
                <div key={item.label} className="vp-realtime-strip-item">
                  <div className="vp-realtime-strip-label">{item.label}</div>
                  <div className="vp-realtime-strip-value">{item.value}</div>
                </div>
              ))}
            </div>
            <Table
              loading={loading}
              pagination={false}
              rowKey="protocol"
              dataSource={detail?.realtime ?? []}
              columns={[
                { title: '来源', dataIndex: 'protocol', width: 130 },
                { title: '经度', dataIndex: 'longitude', width: 120 },
                { title: '纬度', dataIndex: 'latitude', width: 120 },
                { title: '速度 km/h', dataIndex: 'speedKmh', width: 120 },
                { title: 'SOC %', dataIndex: 'socPercent', width: 120 },
                { title: '总里程 km', dataIndex: 'totalMileageKm', width: 130 },
                { title: '最后时间', dataIndex: 'lastSeen', width: 190 }
              ]}
            />
          </Tabs.TabPane>
          <Tabs.TabPane tab="历史位置" itemKey="history">
            <Table
              loading={loading}
              pagination={false}
              rowKey="deviceTime"
              dataSource={detail?.history?.items ?? []}
              columns={[
                { title: '来源', dataIndex: 'protocol', width: 130 },
                { title: '经度', dataIndex: 'longitude', width: 120 },
                { title: '纬度', dataIndex: 'latitude', width: 120 },
                { title: '速度 km/h', dataIndex: 'speedKmh', width: 120 },
                { title: '总里程 km', dataIndex: 'totalMileageKm', width: 130 },
                { title: '设备时间', dataIndex: 'deviceTime', width: 190 },
                { title: '入库时间', dataIndex: 'serverTime', width: 190 }
              ]}
            />
          </Tabs.TabPane>
          <Tabs.TabPane tab="RAW 字段" itemKey="raw">
            <Table
              loading={loading}
              pagination={false}
              rowKey="id"
              dataSource={detail?.raw?.items ?? []}
              columns={[
                { title: '来源', dataIndex: 'protocol', width: 130 },
                { title: '帧类型', dataIndex: 'frameType', width: 190 },
                { title: '大小 B', dataIndex: 'rawSizeBytes', width: 100 },
                { title: '设备时间', dataIndex: 'deviceTime', width: 190 },
                { title: '入库时间', dataIndex: 'serverTime', width: 190 }
              ]}
            />
            <Typography.Text type="tertiary">最新 RAW 解析字段</Typography.Text>
            <pre className="vp-json">{JSON.stringify(latestRaw?.parsedFields ?? {}, null, 2)}</pre>
          </Tabs.TabPane>
          <Tabs.TabPane tab="里程" itemKey="mileage">
            <Table
              loading={loading}
              pagination={false}
              rowKey="date"
              dataSource={detail?.mileage?.items ?? []}
              columns={[
                { title: '日期', dataIndex: 'date', width: 130 },
                { title: '来源', dataIndex: 'source', width: 130 },
                { title: '起始里程', dataIndex: 'startMileageKm', width: 130 },
                { title: '结束里程', dataIndex: 'endMileageKm', width: 130 },
                { title: '日里程', dataIndex: 'dailyMileageKm', width: 130 }
              ]}
            />
          </Tabs.TabPane>
          <Tabs.TabPane tab="质量问题" itemKey="quality">
            {qualityTable}
          </Tabs.TabPane>
          </Tabs>
        </Card>
      )}
    </div>
  );
}