Three Black Crows - Bearish

//@version=5
indicator("Three Black Crows - Bearish", shorttitle = "Three Black Crows - Bear", overlay=true)
C_Len = 14 // ta.ema depth for bodyAvg
C_ShadowPercent = 5.0 // size of shadows
C_ShadowEqualsPercent = 100.0
C_DojiBodyPercent = 5.0
C_Factor = 2.0 // shows the number of times the shadow dominates the candlestick body

C_BodyHi = math.max(close, open)
C_BodyLo = math.min(close, open)
C_Body = C_BodyHi - C_BodyLo
C_BodyAvg = ta.ema(C_Body, C_Len)
C_SmallBody = C_Body < C_BodyAvg
C_LongBody = C_Body > C_BodyAvg
C_UpShadow = high - C_BodyHi
C_DnShadow = C_BodyLo - low
C_HasUpShadow = C_UpShadow > C_ShadowPercent / 100 * C_Body
C_HasDnShadow = C_DnShadow > C_ShadowPercent / 100 * C_Body
C_WhiteBody = open < close
C_BlackBody = open > close
C_Range = high-low
C_IsInsideBar = C_BodyHi[1] > C_BodyHi and C_BodyLo[1] < C_BodyLo
C_BodyMiddle = C_Body / 2 + C_BodyLo
C_ShadowEquals = C_UpShadow == C_DnShadow or (math.abs(C_UpShadow - C_DnShadow) / C_DnShadow * 100) < C_ShadowEqualsPercent and (math.abs(C_DnShadow - C_UpShadow) / C_UpShadow * 100) < C_ShadowEqualsPercent
C_IsDojiBody = C_Range > 0 and C_Body <= C_Range * C_DojiBodyPercent / 100
C_Doji = C_IsDojiBody and C_ShadowEquals

patternLabelPosLow = low - (ta.atr(30) * 0.6)
patternLabelPosHigh = high + (ta.atr(30) * 0.6)

label_color_bearish = input(color.red, "Label Color Bearish")
C_ThreeBlackCrowsBearishNumberOfCandles = 3
C_3BCrw_ShadowPercent = 5.0
C_3BCrw_HaveNotDnShadow = C_Range * C_3BCrw_ShadowPercent / 100 > C_DnShadow
C_ThreeBlackCrowsBearish = false
if C_LongBody and C_LongBody[1] and C_LongBody[2]
    if C_BlackBody and C_BlackBody[1] and C_BlackBody[2]
        C_ThreeBlackCrowsBearish := close < close[1] and close[1] < close[2] and open > close[1] and open < open[1] and open[1] > close[2] and open[1] < open[2] and C_3BCrw_HaveNotDnShadow and C_3BCrw_HaveNotDnShadow[1] and C_3BCrw_HaveNotDnShadow[2]
alertcondition(C_ThreeBlackCrowsBearish, title = "New pattern detected", message = "New Three Black Crows – Bearish pattern detected")
if C_ThreeBlackCrowsBearish
    var ttBearishThreeBlackCrows = "Three Black Crows\nThis is a bearish reversal pattern that consists of three long, red-bodied candles in immediate succession. For each of these candles, each day opens within the body of the day before and closes either at or near its low."
    label.new(bar_index, patternLabelPosHigh, text="3BC", style=label.style_label_down, color = label_color_bearish, textcolor=color.white, tooltip = ttBearishThreeBlackCrows)
bgcolor(ta.highest(C_ThreeBlackCrowsBearish?1:0, C_ThreeBlackCrowsBearishNumberOfCandles)!=0 ? color.new(color.red, 90) : na, offset=-(C_ThreeBlackCrowsBearishNumberOfCandles-1))