Get Candlestick patterns for intraday trading Code That Actually Works

//@version=5
indicator("Intraday Candlestick Patterns Detector", shorttitle="ICP Intraday", overlay=true)

// Input parameters for customization
show_bull_eng = input.bool(true, "Show Bullish Engulfing")
show_bear_eng = input.bool(true, "Show Bearish Engulfing")
show_hammer = input.bool(true, "Show Hammer")
show_shooting = input.bool(true, "Show Shooting Star")
show_doji = input.bool(true, "Show Doji")
min_body_pct = input.float(0.1, "Min Body Size %", minval=0.05, maxval=1.0) / 100
max_shadow_pct = input.float(2.0, "Max Upper Shadow % for Hammer", minval=1.0) / 100

// Helper functions
body_size = math.abs(close - open)
total_range = high - low
upper_shadow = high - math.max(open, close)
lower_shadow = math.min(open, close) - low
is_bullish = close > open
is_bearish = close < open
body_pct = body_size / total_range

// Bullish Engulfing: Current bullish candle engulfs previous bearish body
prev_bearish = close[1] < open[1]
bull_eng = show_bull_eng and is_bullish and prev_bearish and open < close[1] and close > open[1]

// Bearish Engulfing: Current bearish candle engulfs previous bullish body
prev_bullish = close[1] > open[1]
bear_eng = show_bear_eng and is_bearish and prev_bullish and open > close[1] and close < open[1]

// Hammer: Small upper body, long lower shadow (2x body), small upper shadow
hammer = show_hammer and body_pct >= min_body_pct and lower_shadow >= 2 * body_size and upper_shadow <= body_size * max_shadow_pct

// Shooting Star: Small lower body, long upper shadow (2x body), small lower shadow
shooting_star = show_shooting and body_pct >= min_body_pct and upper_shadow >= 2 * body_size and lower_shadow <= body_size * max_shadow_pct

// Doji: Very small body relative to range
is_doji = show_doji and body_pct < min_body_pct

// Plots
plotshape(bull_eng, title="Bull Engulfing", location=location.belowbar, color=color.green, style=shape.triangleup, size=size.small)
plotshape(bear_eng, title="Bear Engulfing", location=location.abovebar, color=color.red, style=shape.triangledown, size=size.small)
plotshape(hammer, title="Hammer", location=location.belowbar, color=color.blue, style=shape.circle, size=size.small)
plotshape(shooting_star, title="Shooting Star", location=location.abovebar, color=color.orange, style=shape.circle, size=size.small)
plotshape(is_doji, title="Doji", location=location.absolute, color=color.purple, style=shape.diamond, size=size.tiny)

// Background colors for emphasis
bgcolor(bull_eng ? color.new(color.green, 90) : na)
bgcolor(bear_eng ? color.new(color.red, 90) : na)

// Alerts
alertcondition(bull_eng, title="Bullish Engulfing Alert", message="Bullish Engulfing detected on {{ticker}} - Intraday Buy Signal")
alertcondition(bear_eng, title="Bearish Engulfing Alert", message="Bearish Engulfing detected on {{ticker}} - Intraday Sell Signal")
alertcondition(hammer, title="Hammer Alert", message="Hammer pattern on {{ticker}} - Potential Reversal Up")
alertcondition(shooting_star, title="Shooting Star Alert", message="Shooting Star on {{ticker}} - Potential Reversal Down")
alertcondition(is_doji, title="Doji Alert", message="Doji spotted on {{ticker}} - Watch for Breakout")