Support and Resistance with Buy/Sell Signals

Swing Highs and Lows:

The script identifies swing highs and lows using the ta.highest and ta.lowest functions over a user-defined swing_length period.

Swing highs are treated as resistance levels.

Swing lows are treated as support levels.

Buy Signal:

A buy signal is generated when the price closes above the resistance level (ta.crossover(close, swing_high)).

Sell Signal:

A sell signal is generated when the price closes below the support level (ta.crossunder(close, swing_low)).

Plotting:

Support and resistance levels are plotted on the chart.

Buy and sell signals are displayed as labels on the chart.

Background Highlighting:

The background is highlighted in green for buy signals and red for sell signals (optional).