Tweak a Pine script indicator for TradingView to plot buy arrows with alert conditions

I simply need someone to add a part to the end of the below script that adds upward buy arrows with 'buy' alert conditions for this Volatility Stop indicator.

The main condition is that I don't want a green buy arrow to appear at every green cross, I only want it to appear once at the beginning of a run of green crosses / after each run of red crosses.

Below is the code. Should be a 5 minute job to someone who knows Pine script. Not a big job as I am already providing the bulk of the code for this indicator. Also I have attached an image with an example of where I want the arrows to make things clearer.

Thanks!

//@version=3

study("Volatility Stop Custom", shorttitle="VStop", overlay=false)

length = input(20)

mult = input(2)

atr_ = atr(length)

max1=0.0

min1=0.0

is_uptrend_prev = false

stop=0.0

vstop_prev=0.0

vstop1=0.0

is_uptrend=false

is_trend_changed=false

max_ = 0.0

min_ = 0.0

vstop=0.0

max1 := max(nz(max_[1]), close)

min1 := min(nz(min_[1]), close)

is_uptrend_prev := nz(is_uptrend[1], true)

stop := is_uptrend_prev ? max1 - mult * atr_ : min1 + mult * atr_

vstop_prev := nz(vstop[1])

vstop1 := is_uptrend_prev ? max(vstop_prev, stop) : min(vstop_prev, stop)

is_uptrend := close - vstop1 >= 0

is_trend_changed := is_uptrend != is_uptrend_prev

max_ := is_trend_changed ? close : max1

min_ := is_trend_changed ? close : min1

vstop := is_trend_changed ? is_uptrend ? max_ - mult * atr_ : min_ + mult * atr_ : vstop1

plot(vstop, color = is_uptrend ? green : red, style=cross, linewidth=2)

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Project ID: #17240732

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