using AssetManager.Models.DTOs;

namespace AssetManager.Services;

public class PortfolioService : IPortfolioService
{
    public CreatePortfolioResponse CreatePortfolio(CreatePortfolioRequest request)
    {
        // 模拟创建投资组合
        return new CreatePortfolioResponse
        {
            id = "port-" + Guid.NewGuid().ToString().Substring(0, 8),
            totalValue = request.stocks.Sum(s => s.price * s.amount),
            returnRate = 0,
            currency = request.currency,
            createdAt = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")
        };
    }

    public PortfolioDetailResponse GetPortfolioById(string id)
    {
        // 模拟获取投资组合详情
        return new PortfolioDetailResponse
        {
            id = id,
            name = "我的投资组合",
            currency = "CNY",
            strategy = new StrategyInfo
            {
                id = "hfea",
                name = "HFEA 风险平价策略",
                description = "高风险高收益策略"
            },
            portfolioValue = 125000,
            totalReturn = 12500,
            todayProfit = 2500,
            todayProfitCurrency = "CNY",
            positions = new List<PositionItem>
            {
                new PositionItem
                {
                    id = "pos-001",
                    stockCode = "UPRO",
                    stockName = "标普500三倍杠杆ETF",
                    amount = 100,
                    averagePrice = 50,
                    currentPrice = 55,
                    totalValue = 5500,
                    profit = 500,
                    profitRate = 10,
                    currency = "USD"
                }
            },
            transactions = new List<TransactionItem>
            {
                new TransactionItem
                {
                    id = "trans-001",
                    portfolioId = id,
                    date = "2026-02-24",
                    time = "14:30:00",
                    type = "buy",
                    title = "购买 UPRO",
                    amount = 5000,
                    currency = "USD",
                    status = "completed",
                    remark = "初始建仓"
                }
            }
        };
    }

    public GetTransactionsResponse GetTransactions(string portfolioId, int limit, int offset)
    {
        // 模拟获取交易记录
        return new GetTransactionsResponse
        {
            items = new List<TransactionItem>
            {
                new TransactionItem
                {
                    id = "trans-001",
                    portfolioId = portfolioId,
                    date = "2026-02-24",
                    time = "14:30:00",
                    type = "buy",
                    title = "购买 UPRO",
                    amount = 5000,
                    currency = "USD",
                    status = "completed",
                    remark = "初始建仓"
                }
            },
            total = 1,
            page = offset / limit + 1,
            pageSize = limit
        };
    }

    public CreateTransactionResponse CreateTransaction(CreateTransactionRequest request)
    {
        // 模拟执行交易
        return new CreateTransactionResponse
        {
            id = "trans-" + Guid.NewGuid().ToString().Substring(0, 8),
            totalAmount = request.price * request.amount,
            status = "processing",
            createdAt = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")
        };
    }
}