//@version=6
indicator("Shooting Star and Doji Detector", overlay=true)

// Function to determine if a candle is a shooting star
is_shooting_star(open, high, close, low) =>
    body_length = math.abs(close - open)
    upper_shadow = high - math.max(open, close)
    lower_shadow = math.min(open, close) - low
    
    // Shooting star conditions:
    // 1. Small body (less than 1/3 of total candle length)
    // 2. Upper shadow at least 2x the body length
    // 3. Lower shadow is very small
    body_length <= (high - low) / 3 and upper_shadow >= body_length * 2 and lower_shadow <= body_length

// Function to determine if a candle is a doji
is_doji(open, high, close, low) => 
    body_length = math.abs(close - open) 
    total_range = high - low
    
    // Doji conditions:
    // 1. Body is very small (less than 10% of total candle range)
    body_length <= total_range * 0.1

// Plot shooting star red mark
plotchar(is_shooting_star(open, high, close, low), 
         title="Shooting Star", 
         char="+", 
         location=location.abovebar, 
         color=color.red, 
         size=size.small)

// Plot doji green mark
plotchar(is_doji(open, high, close, low), 
         title="Doji", 
         char="+", 
         location=location.abovebar, 
         color=color.green, 
         size=size.small)