//@version=4
study("Straight Razor", overlay=true)

// Calculate conditions for alerts
closeEqualsHigh = close == high
closeEqualsLow = close == low

// Confirm that the bar has closed
closeConfirmed = barstate.isconfirmed

// Plotting the conditions for visualization, only when the bar has closed
plotshape(closeConfirmed and closeEqualsHigh, style=shape.triangleup, location=location.belowbar, color=color.green, size=size.small)
plotshape(closeConfirmed and closeEqualsLow, style=shape.triangledown, location=location.abovebar, color=color.red, size=size.small)

// Alert conditions, only when the bar has closed
alertcondition(closeConfirmed and closeEqualsHigh, title="Close Equals High Alert", message="Close is equal to High of the candle")
alertcondition(closeConfirmed and closeEqualsLow, title="Close Equals Low Alert", message="Close is equal to Low of the candle")