Help writing Arcade to get distinct values from intersection in Field Maps

LindsayRaabe_FPCWA

I'm anticipating a problem I'm going to need to solve next week and don't believe my knowledge is up to it. Sooooo, I'm hoping the brains trust can help me out! 

I will have 2 polygon layers in Field Maps. One contains features (plantation areas) and another will have a new feature added to it which intersects with multiple plantation areas. What I want to achieve is an arcade script that runs an intersect between the 2 layers (which I know how to do) but then takes the planting year of all the intersect plantation areas (e.g. 1992, 1992, 1992, 1995, 1996, 1996, ...) and return a concatenated string of the Distinct values (e.g. 1992, 1995, 1996, ...). This string will then get passed to Survey123 to auto populate a field in the survey. 

Is this possible?

JohnEvans6

Should be able to. I'm not super familiar with field maps. If I've got a good read on what you're asking for I think it looks something like

var poly1 = FeatureSetByName($map, "Plantation Areas")
var intersects = Intersects(Geometry($feature), poly1)
var distinct_planting = []
var display_output = ""

for(var f in intersects) {
  Push(distinct_planting, f['plantation_year_field'])
}

distinct_planting = Distinct(distinct_planting)

for (var pyear in distinct_planting) {
  display_output = display_output + distinct_planting[pyear] + ' '
}

display_output = Trim(display_output)

return { 
	type : 'text', 
	text : display_output
}