import { useState } from 'react';
import { useNavigate } from '@tanstack/react-router';
import { useRecommendations } from '../api/hooks';
import { DataTable, type Column } from '../components/DataTable';
import { StatusBadge, ConfidenceBar, LoadingSpinner, TickerFilter } from '../components/ui';
import type { Recommendation } from '../api/hooks';

export function RecommendationsPage() {
  const navigate = useNavigate();
  const [ticker, setTicker] = useState('');
  const { data, isLoading } = useRecommendations({ ticker: ticker || undefined, limit: 100 });

  const columns: Column<Recommendation>[] = [
    { key: 'ticker', header: 'Ticker', className: 'font-mono font-semibold text-brand-300' },
    { key: 'action', header: 'Action', render: (r) => <StatusBadge status={r.action} /> },
    { key: 'mode', header: 'Mode', render: (r) => <StatusBadge status={r.mode} /> },
    { key: 'confidence', header: 'Confidence', render: (r) => <ConfidenceBar value={r.confidence} /> },
    { key: 'thesis', header: 'Thesis', render: (r) => <span className="line-clamp-1 max-w-xs text-xs text-gray-400">{r.thesis ?? '—'}</span> },
    { key: 'generated_at', header: 'Generated', render: (r) => <span className="text-xs">{new Date(r.generated_at).toLocaleString()}</span> },
  ];

  if (isLoading) return <LoadingSpinner />;

  return (
    <div>
      <div className="mb-4 flex items-center justify-between">
        <h1 className="text-xl font-semibold text-gray-100">Recommendations</h1>
        <TickerFilter value={ticker} onChange={setTicker} />
      </div>
      <DataTable<Recommendation>
        data={data ?? []}
        columns={columns}
        keyField="id"
        onRowClick={(row) => navigate({ to: '/recommendations/$id', params: { id: row.id } })}
      />
    </div>
  );
}