import { useLoaderData } from "react-router";
import TradingViewChart from "../components/TradingViewChart";
import Navbar from "../components/Navbar";

export const meta = () => [{ title: "Stock Detail - AITrader" }];

interface LoaderData {
  ticker: string;
  position: number | null;
  orders: any[];
  bars: any[];
}

export async function loader({ params, request }: { params: { ticker: string }; request: Request }) {
  const ticker = params.ticker?.toUpperCase() || "";
  
  // Build base URL from request for server-side fetches
  const url = new URL(request.url);
  const baseUrl = `${url.protocol}//${url.host}`;
  
  // Fetch position
  const posRes = await fetch(`${baseUrl}/api/alpaca/positions`);
  const positions = posRes.ok ? await posRes.json() : [];
  const position = positions.find((p: any) => p.ticker === ticker)?.qty ?? null;

  // Fetch orders
  const ordRes = await fetch(`${baseUrl}/api/alpaca/orders`);
  const ordersData = ordRes.ok ? await ordRes.json() : { orders: [] };
  const orders = ordersData.orders?.filter((o: any) => o.symbol === ticker) || [];

  // Fetch bars for chart
  const barsRes = await fetch(`${baseUrl}/api/alpaca/quote/${ticker}`);
  const barsData = barsRes.ok ? await barsRes.json() : null;
  const bars = barsData?.bars || [];

  return Response.json({ ticker, position, orders, bars });
}

export default function StockDetail() {
  const { ticker, position, orders, bars } = useLoaderData() as LoaderData;

  // Convert Alpaca bars to TradingView format (YYYY-MM-DD for time)
  const chartData = bars?.map((bar: any) => ({
    time: bar.t ? new Date(bar.t).toISOString().split('T')[0] : "",
    open: bar.o,
    high: bar.h,
    low: bar.l,
    close: bar.c,
  })).filter((bar: any) => bar.time) || [];

  return (
    <div className="min-h-screen bg-gradient-to-br from-gray-50 to-blue-50">
      <Navbar />
      <div className="mx-auto max-w-7xl px-6 py-8">
        <h1 className="text-3xl font-bold text-gray-900 mb-6">{ticker} Detail</h1>
        
        <TradingViewChart ticker={ticker} data={chartData} />
        
        <div className="mt-6 bg-white rounded-xl shadow-lg p-6 border border-gray-200">
          <h2 className="text-xl font-bold text-gray-900 mb-4">Position</h2>
          <p className="text-gray-600">{position ? `Quantity: ${position} shares` : "No position held"}</p>
        </div>
        
        <div className="mt-6 bg-white rounded-xl shadow-lg p-6 border border-gray-200">
          <h2 className="text-xl font-bold text-gray-900 mb-4">Recent Orders</h2>
          {orders.length === 0 ? (
            <p className="text-gray-500">No orders found for {ticker}</p>
          ) : (
            <div className="overflow-x-auto">
              <table className="w-full text-sm">
                <thead>
                  <tr className="border-b border-gray-200">
                    <th className="text-left py-2 px-3 font-medium text-gray-700">Side</th>
                    <th className="text-left py-2 px-3 font-medium text-gray-700">Qty</th>
                    <th className="text-left py-2 px-3 font-medium text-gray-700">Status</th>
                    <th className="text-left py-2 px-3 font-medium text-gray-700">Filled Price</th>
                    <th className="text-left py-2 px-3 font-medium text-gray-700">Filled At</th>
                  </tr>
                </thead>
                <tbody>
                  {orders.map((order: any, i: number) => (
                    <tr key={order.id || i} className="border-b border-gray-100">
                      <td className="py-2 px-3">
                        <span className={order.side === "buy" ? "text-green-600" : "text-red-600"}>
                          {order.side?.toUpperCase()}
                        </span>
                      </td>
                      <td className="py-2 px-3 text-gray-900">{order.qty}</td>
                      <td className="py-2 px-3 text-gray-900">{order.status}</td>
                      <td className="py-2 px-3 text-gray-900">
                        {order.filled_avg_price ? `$${parseFloat(order.filled_avg_price).toFixed(2)}` : "-"}
                      </td>
                      <td className="py-2 px-3 text-gray-600">
                        {order.filled_at ? new Date(order.filled_at).toLocaleDateString() : "-"}
                      </td>
                    </tr>
                  ))}
                </tbody>
              </table>
            </div>
          )}
        </div>
      </div>
    </div>
  );
}