//@version=5
strategy("RSI(6) Buy at 30, EMA(34) Sell with Stop Loss", overlay=true)

// 参数设置
rsiPeriod = 6
emaPeriod = 54
buyLevel = 30
positionSize = 0.02

// 计算 RSI 和 EMA
rsiValue = ta.rsi(close, rsiPeriod)
emaValue = ta.ema(close, emaPeriod)

// 买入条件：RSI 低于 30
buySignal = ta.crossunder(rsiValue, buyLevel)

// 卖出条件：价格高于 EMA 54
sellSignal = close > emaValue

// 记录开仓价格
var float entryPrice = na

// 买入逻辑：只做多
if (buySignal and strategy.position_size == 0)
strategy.entry("Buy", strategy.long, qty=positionSize)
entryPrice := close // 记录买入时的开仓价格

// 止损逻辑：设定止损为 0.5%
if (strategy.position_size > 0)
stopLossPrice = entryPrice * 0.995 // 0.5% 止损
if (close <= stopLossPrice)
strategy.close("Buy", comment="Stop Loss") // 止损平仓

// 平仓逻辑：价格高于 EMA 54 时平仓
if (strategy.position_size > 0 and sellSignal)
strategy.close("Buy", comment="Take Profit") // 达到条件平仓