import Alpaca from "@alpacahq/alpaca-trade-api";

const alpaca = new Alpaca({
  keyId: process.env.ALPACA_API_KEY!,
  secretKey: process.env.ALPACA_SECRET_KEY!,
  baseUrl: process.env.ALPACA_BASE_URL || "https://paper-api.alpaca.markets",
  retryOnError: false,
});

export async function loader({ params }: { params: { ticker: string } }) {
  const ticker = params.ticker?.toUpperCase();
  if (!ticker) {
    return Response.json({ error: "Ticker is required" }, { status: 400 });
  }

  try {
    // Get latest trade for current price
    const trade = await alpaca.getLatestTrade(ticker);
    const price = (trade as { Price?: number }).Price || 0;
    
    // Get historical bars for chart (last 30 days, daily)
    const bars = await alpaca.getBarsV2(ticker, {
      timeframe: "1Day",
      limit: 30,
    });
    
    // Convert async generator to array
    const barsArray = [];
    for await (const bar of bars) {
      barsArray.push({
        t: (bar as any).Timestamp || (bar as any).t,
        o: (bar as any).Open || (bar as any).o,
        h: (bar as any).High || (bar as any).h,
        l: (bar as any).Low || (bar as any).l,
        c: (bar as any).Close || (bar as any).c,
        v: (bar as any).Volume || (bar as any).v,
      });
    }
    
    return Response.json({
      ticker,
      price,
      bars: barsArray,
    });
  } catch (error) {
    console.error("Alpaca data error:", error);
    return Response.json({ error: "Failed to fetch data" }, { status: 500 });
  }
}