import { ChevronDown, RefreshCw, Truck } from 'lucide-react';
import { useEffect, useRef, useState } from 'react';
import type { HydrogenVehicleScope } from '../../api';
import { formatRefreshTime } from '../model';

interface BiYearSelectProps {
  value: number;
  years: number[];
  onChange: (year: number) => void;
}

function BiYearSelect({ value, years, onChange }: BiYearSelectProps) {
  const [isOpen, setIsOpen] = useState(false);
  const ref = useRef<HTMLDivElement>(null);

  useEffect(() => {
    function handleClickOutside(e: MouseEvent) {
      if (ref.current && !ref.current.contains(e.target as Node)) {
        setIsOpen(false);
      }
    }
    if (isOpen) {
      document.addEventListener('mousedown', handleClickOutside);
    }
    return () => {
      document.removeEventListener('mousedown', handleClickOutside);
    };
  }, [isOpen]);

  return (
    <div className="ehb-year-select-wrapper" ref={ref}>
      <button
        type="button"
        className={`ehb-year-select-btn ${isOpen ? 'is-active' : ''}`}
        onClick={() => setIsOpen(!isOpen)}
        aria-label="年份选择"
      >
        <span className="ehb-year-text">{value} 年</span>
        <ChevronDown
          size={13}
          style={{
            transition: 'transform 0.2s ease',
            transform: isOpen ? 'rotate(180deg)' : 'none',
            color: '#64748b',
          }}
        />
      </button>

      {isOpen && (
        <div className="ehb-year-dropdown">
          <div className="ehb-year-dropdown__header">切换数据年份</div>
          <div className="ehb-year-dropdown__list">
            {years.map((y) => (
              <button
                key={y}
                type="button"
                className={`ehb-year-dropdown__item ${y === value ? 'is-selected' : ''}`}
                onClick={() => {
                  onChange(y);
                  setIsOpen(false);
                }}
              >
                <span>{y} 年</span>
                {y === value && <span className="ehb-year-check">✓</span>}
              </button>
            ))}
          </div>
        </div>
      )}
    </div>
  );
}

interface OverviewHeaderProps {
  activeYear: number;
  availableYears: number[];
  vehicleScope: HydrogenVehicleScope;
  verifyScope?: 'all' | 'verified';
  onVerifyScopeChange?: (scope: 'all' | 'verified') => void;
  selectedStationId?: number | null;
  selectedStationName?: string | null;
  stations?: { id: number; name: string }[];
  latestLedgerTime?: string | null;
  lastRefreshAt?: number;
  refreshing?: boolean;
  onSelectYear: (year: number) => void;
  onVehicleScopeChange: (scope: HydrogenVehicleScope) => void;
  onStationChange?: (stationId: number | null) => void;
  onRefresh: () => void;
}

export function OverviewHeader({
  activeYear,
  availableYears,
  vehicleScope,
  verifyScope = 'all',
  onVerifyScopeChange,
  latestLedgerTime,
  lastRefreshAt = 0,
  refreshing = false,
  onSelectYear,
  onVehicleScopeChange,
  onRefresh,
}: OverviewHeaderProps) {
  return (
    <section className="ehb-daily-filter-card" style={{ marginBottom: 12 }} aria-label="总览筛选工具栏">
      <div className="ehb-daily-filter-row">
        <div className="ehb-daily-filter-group">
          <BiYearSelect value={activeYear} years={availableYears} onChange={onSelectYear} />
          <div className="ehb-pill-tabs">
            <button
              type="button"
              className={`ehb-pill-btn ${verifyScope === 'all' ? 'is-active' : ''}`}
              onClick={() => onVerifyScopeChange?.('all')}
            >
              全量订单
            </button>
            <button
              type="button"
              className={`ehb-pill-btn ${verifyScope === 'verified' ? 'is-active' : ''}`}
              onClick={() => onVerifyScopeChange?.('verified')}
              title="真实账本已返回全量有效订单"
            >
              仅已核对
            </button>
          </div>
        </div>

        <div className="ehb-daily-filter-group">
          <div className="ehb-fleet-segmented">
            <button
              type="button"
              className={`ehb-fleet-btn ${vehicleScope === 'all' ? 'is-active' : ''}`}
              onClick={() => onVehicleScopeChange('all')}
            >
              全部车辆
            </button>
            <button
              type="button"
              className={`ehb-fleet-btn ${vehicleScope === 'lingniu' ? 'is-active' : ''}`}
              onClick={() => onVehicleScopeChange('lingniu')}
            >
              <Truck size={14} />
              仅羚牛车辆
            </button>
            <button
              type="button"
              className={`ehb-fleet-btn ${vehicleScope === 'external' ? 'is-active' : ''}`}
              onClick={() => onVehicleScopeChange('external')}
            >
              <Truck size={14} />
              仅外部车辆
            </button>
          </div>

          <span className="ehb-chrome__clock" style={{ fontSize: 12, color: '#64748b' }}>
            {latestLedgerTime ? `账本 ${latestLedgerTime.slice(5, 16)}` : lastRefreshAt ? formatRefreshTime(lastRefreshAt) : '已同步'}
          </span>

          <button
            type="button"
            className="ehb-btn ehb-btn--ghost"
            onClick={onRefresh}
            disabled={refreshing}
            title="数据刷新"
          >
            <RefreshCw size={14} className={refreshing ? 'animate-spin' : ''} aria-hidden />
            刷新
          </button>
        </div>
      </div>
    </section>
  );
}