Testing

//version=5
indicator("Range Filter with Support and Resistance", overlay=true)

// Inputs for Range Filter
length = input(10, title="Range Length")
multiplier = input.float(1.5, title="Multiplier")

// Calculate Range Filter
src = close
basis = ta.sma(src, length)
range = ta.stdev(src, length) * multiplier
upper = basis + range
lower = basis - range

// Trend Detection
trendUp = src > upper ? 1 : na
trendDown = src < lower ? -1 : na
trend = ta.valuewhen(trendUp or trendDown, trendUp ? 1 : -1, 0)

// Support and Resistance Levels
lookback = input(20, title="Lookback Period for Support/Resistance")
support = ta.lowest(low, lookback)
resistance = ta.highest(high, lookback)

// Plotting
plot(upper, color=color.new(color.green, 70), linewidth=1, title="Upper Range")
plot(lower, color=color.new(color.red, 70), linewidth=1, title="Lower Range")
hline(support, "Support", color=color.blue, linestyle=hline.style_dotted, linewidth=2)
hline(resistance, "Resistance", color=color.orange, linestyle=hline.style_dotted, linewidth=2)

// Background Color for Trends
bgcolor(trend == 1 ? color.new(color.green, 90) : trend == -1 ? color.new(color.red, 90) : na)

// Alerts for Breakouts
alertcondition(src > resistance, title="Price Above Resistance", message="Price broke above resistance!")
alertcondition(src < support, title="Price Below Support", message="Price broke below support!")