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/*backtest
start: 2025-05-31 00:00:00
end: 2025-06-30 00:00:00
period: 1m
basePeriod: 1m
exchanges: [{"eid":"Futures_Binance","currency":"BNB_USDT"}]
args: [["RunMode",1,358374]]
*/

//@version=6
strategy("Inverted FVG Strategy with Trend Check and Trailing Stops", default_qty_value = 10, overlay=true)

// Function to detect FVG
fvgDetected(src, high, low) =>
    float prevHigh = na
    float prevLow = na
    float prevClose = na
    float fvgHigh = na
    float fvgLow = na
    bool fvg = false
    if (not na(src[3]))
        prevHigh := high[3]
        prevLow := low[3]
        prevClose := src[3]
        if (src[2] > prevClose and low[2] > prevHigh) or (src[2] < prevClose and high[2] < prevLow)
            fvg := true
            fvgHigh := low[2] > prevHigh ? high[2] : na
            fvgLow := high[2] < prevLow ? low[2] : na
    [fvg, fvgHigh, fvgLow]

// Detect FVG on the chart
[fvg, fvgHigh, fvgLow] = fvgDetected(close, high, low)

// Detect IFVG - Inversion of FVG
bool ifvg = false
float ifvgHigh = na
float ifvgLow = na

if (fvg)    
    if (high[1] > fvgHigh and close[1] > open[1]) or (high[1] < fvgLow and close[1] < open[1])
        ifvg := true
        ifvgHigh := close[1] > open[1] ? high[1] : na
        ifvgLow := close[1] <  open[1] ? low[1] : na

// Plot FVG and IFVG zones for visualization
plot(ifvgHigh, title="IFVG High", color=color.red, linewidth=2, style=plot.style_cross)
plot(ifvgLow, title="IFVG Low", color=color.red, linewidth=2, style=plot.style_cross)

// Trend Check using Simple Moving Averages
smaShort = ta.sma(close, 50)  // Short term SMA
smaLong = ta.sma(close, 200)  // Long term SMA
bool uptrend = false
bool downtrend = false

uptrend := smaShort > smaLong  // Up trend if short SMA is above long SMA
downtrend := smaShort < smaLong  // Down trend if short SMA is below long SMA

// Plot SMAs for visualization
plot(smaShort, title="SMA Short", color=color.blue, linewidth=1)
plot(smaLong, title="SMA Long", color=color.orange, linewidth=1)

// Trading logic with trend confirmation
longCondition = ifvg and close < ifvgLow and uptrend
shortCondition = ifvg and close > ifvgHigh and downtrend

// Risk Definition - 使用百分比
stopLoss = 0.005   // 0.5% 止损
takeProfit = 0.015  // 1.5% 止盈

if (longCondition and strategy.position_size == 0)
    strategy.entry("Long", strategy.long)
    stopPrice = close * (1 - stopLoss)
    limitPrice = close * (1 + takeProfit)
    strategy.exit("Initial Long Exit", "Long", stop=stopPrice, limit=limitPrice)

if (shortCondition and strategy.position_size == 0)
    strategy.entry("Short", strategy.short)
    stopPrice = close * (1 + stopLoss)
    limitPrice = close * (1 - takeProfit)
    strategy.exit("Initial Short Exit", "Short", stop=stopPrice, limit=limitPrice)

// ATR for dynamic trailing stop
atr = ta.atr(14)

// Trailing Stop for Long Position if the trade has moved > 0.5% (half of takeProfit)
if (strategy.position_size > 0)
    profitThreshold = takeProfit * 0.5  // 1.5% profit threshold
    if (close - strategy.position_avg_price >= strategy.position_avg_price * profitThreshold)
        // 将止损移动到盈亏平衡点加上一点利润
        trailingStopLong = math.max(strategy.position_avg_price * (1 + profitThreshold), close - (atr * 2))
        strategy.exit("Trailing Stop Long", "Long", stop=trailingStopLong)

// Trailing Stop for Short Position if the trade has moved > 0.5% (half of takeProfit)
if (strategy.position_size < 0)
    profitThreshold = takeProfit * 0.5  // 1.5% profit threshold
    if (strategy.position_avg_price - close >= strategy.position_avg_price * profitThreshold)
        // 将止损移动到盈亏平衡点加上一点利润
        trailingStopShort = math.min(strategy.position_avg_price * (1 - profitThreshold), close + (atr * 2))
        strategy.exit("Trailing Stop Short", "Short", stop=trailingStopShort)