package simplex.bn25.datemasa335859.trading.common;

import java.math.BigDecimal;
import java.text.NumberFormat;

public class DisplayFormatter {
// 文字列を最大長に切り詰め、必要に応じて”…”を追加する
public static String truncateString(String str, int maxLength) {
if (str.length() > maxLength) {
return str.substring(0, maxLength – 3) + “…”; // 最大長から3文字分を引いて”…”を追加
}
return str; // 短縮不要の場合はそのまま返す
}

// 数字をカンマ区切りでフォーマットする
public static String formatNumber(long number) {
    return NumberFormat.getNumberInstance().format(number);
}

public static String formatDecimal(BigDecimal number) {
    return NumberFormat.getNumberInstance().format(number);
}

}

package simplex.bn25.datemasa335859.trading.a;

import simplex.bn25.datemasa335859.trading.common.DisplayFormatter;
import simplex.bn25.datemasa335859.trading.stock.TickerManager;

import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.Map;
import java.util.TreeMap;

public class PositionCalculator {
private final TradeDataLoader tradeDataLoader;

public PositionCalculator(TradeDataLoader tradeDataLoader) {
    this.tradeDataLoader = tradeDataLoader;
}

public void displayPositions() {
    Map<String, Position> positions = new TreeMap<>(tradeDataLoader.calculatePositions()); // Tickerで昇順ソート

    if (positions.isEmpty()) {
        System.out.println("取引データが登録されていません。");
        return;
    }

    // 表のヘッダーを表示
    System.out.println("|===============================================================================================================|");
    System.out.println("| Ticker | Product Name                 | Quantity   | Avg Unit Price   | Realized PnL   | Valuation   | Unrealized PnL |");
    System.out.println("|--------+-------------------------------+------------+------------------+----------------+-------------+----------------|");

    // 各ポジションについて情報を表示
    for (Map.Entry<String, Position> entry : positions.entrySet()) {
        String ticker = entry.getKey();
        Position position = entry.getValue();

        // Ticker Nameの取得
        String tickerName = TickerManager.getTickerToNameMap().getOrDefault(ticker, "Unknown");

        // 時価情報を取得
        BigDecimal marketPrice = MarketPriceLoader.getMarketPrice(ticker);

        // 各項目の計算
        BigDecimal valuation = marketPrice != null
                ? position.calculateValuation(marketPrice).setScale(2, RoundingMode.HALF_UP)
                : null;

        BigDecimal unrealizedPnL = marketPrice != null
                ? position.calculateUnrealizedPnL(marketPrice).setScale(2, RoundingMode.HALF_UP)
                : null;

        BigDecimal realizedPnL = position.getRealizedPnL().setScale(2, RoundingMode.HALF_UP);

        // 表形式で出力
        System.out.printf("| %-6s | %-29s | %10s | %,16.2f | %,14.2f | %-11s | %-14s |\n",
                ticker,
                DisplayFormatter.truncateString(tickerName, 25),
                DisplayFormatter.formatNumber(position.quantity()),
                position.getAverageUnitPrice(),
                realizedPnL,
                valuation != null ? DisplayFormatter.formatDecimal(valuation) : "N/A",
                unrealizedPnL != null ? DisplayFormatter.formatDecimal(unrealizedPnL) : "N/A");
    }

    // 表のフッターを表示
    System.out.println("|===============================================================================================================|");
}

}