একাধিক প্যাটার্ন স্বীকৃতি এবং SR কোয়ান্টাইল ট্রেডিং কৌশল

/*backtest
start: 2019-12-23 08:00:00
end: 2024-12-04 00:00:00
period: 1d
basePeriod: 1d
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/

//@version=5
strategy("Double Bottom with Support/Resistance Strategy - Aynet", overlay=true)

// Inputs
lookbackPeriod = input(21, "Lookback Period")
swingLowThreshold = input(1.5, "Swing Low Threshold")
fibLevel1 = input(0.618, "Fibonacci Level 1")
fibLevel3 = input(1.618, "Fibonacci Level 2")
srPeriod = input(21, "Support/Resistance Period") 
srThreshold = input(3, "Support/Resistance Touch Points")

// Support/Resistance Function
get_sr_level(idx) =>
    var level = 0.0
    var count = 0
    
    if bar_index % srPeriod == 0
        highCount = 0
        lowCount = 0
        for i = 0 to srPeriod - 1
            if math.abs(high[i] - high) < (high * 0.001)
                highCount += 1
            if math.abs(low[i] - low) < (low * 0.001)
                lowCount += 1
                
        if highCount >= srThreshold
            level := high
            count := highCount
        if lowCount >= srThreshold
            level := low
            count := lowCount
            
    [level, count]

// Pattern Detection Functions
isSwingLow(src, left, right) =>
    isLow = true
    for i = 0 to left + right
        if src[i] < src[right]
            isLow := false
    isLow

getSpikeSharpness(index) =>
    priceRange = high[index] - low[index]
    bodyRange = math.abs(close[index] - open[index])
    sharpness = priceRange / bodyRange
    sharpness

// Pattern Variables
var float firstBottom = na
var float secondBottom = na
var bool isAdam = false
var bool isEve = false
var float level1Value = na
var float level3Value = na

// Pattern Detection
bottom = isSwingLow(low, lookbackPeriod, lookbackPeriod)
if bottom
    sharpness = getSpikeSharpness(0)
    if na(firstBottom)
        firstBottom := low
        isAdam := sharpness > swingLowThreshold
    else if low <= firstBottom * 1.02 and low >= firstBottom * 0.98
        secondBottom := low
        isEve := sharpness <= swingLowThreshold

// Calculate Fibonacci
if not na(secondBottom)
    highPoint = ta.highest(high, lookbackPeriod)
    fibDistance = highPoint - math.min(firstBottom, secondBottom)
    level1Value := math.min(firstBottom, secondBottom) + fibDistance * fibLevel1
    level3Value := math.min(firstBottom, secondBottom) + fibDistance * fibLevel3

// Get S/R Level
[srLevel, srCount] = get_sr_level(0)

// Trading Logic
longCondition = srLevel > level3Value
shortCondition = srLevel < level1Value

if longCondition
    strategy.entry("Long", strategy.long)

if shortCondition
    strategy.entry("Short", strategy.short)

// Reset Pattern
if high > ta.highest(high[1], lookbackPeriod)
    firstBottom := na
    secondBottom := na
    isAdam := false
    isEve := false
var table logo = table.new(position.top_right, 1, 1)
table.cell(logo, 0, 0, 'Double Bottom with Support/Resistance Strategy - Aynet', text_size=size.large, text_color=color.white)
// Plots
plot(level1Value, "0.236", color=color.rgb(245, 0, 0), style=plot.style_line)
plot(level3Value, "0.618", color=color.rgb(82, 166, 255), style=plot.style_line)
plot(srLevel, "S/R Level", color=color.white)

plotshape(bottom and not na(firstBottom) and na(secondBottom), "Adam Bottom", shape.circle, location.belowbar, color.green)
plotshape(bottom and not na(secondBottom), "Eve Bottom", shape.circle, location.belowbar, color.yellow)