converting iOS/Android groovy gradle file to kotlin - getBinary, getProperty (+ literal attributes)? - gradle

Question

I am trying to convert the gradle files for a project with both iOS and Android targets from groovy
I have these two lines in the groovy file
val srcFile = kotlin.targets."$target".compilations.main.getBinary("FRAMEWORK", buildType)}
val targetDir = getProperty("configuration.build.dir")
The first challenge is the "$targets" as an attribute. Target is property which is a string, so this is like using a string as an attribute name. But I would expect targets is a map, and so is compilations?
val srcFile = kotlin.targets[target].compilations[main].getBinary("FRAMEWORK", buildType)}
val targetDir = getProperty("configuration.build.dir")
seems to be valid kotlin, so I am assuming the groovy is like js and objects and maps can both be accessed by [] and . notations. Assuming this is correct, the problem becomes that both getBinary and getProperty are unkown.
Any help with this appreciated.
For reference, these lines are part of a task:
task("copyFramework") {
val buildType:String = project.findProperty("kotlin.build.type") as String??: "DEBUG"
val target:String = project.findProperty("kotlin.target")as String? ?: "ios"
dependsOn("link${buildType.toLowerCase().capitalize()}Framework${target.capitalize()}")
doLast {
val srcFile = kotlin.targets[target].compilations["main"].getBinary("FRAMEWORK", buildType)
val targetDir = getProperty("configuration.build.dir")
copy {
from(srcFile.parent)
into(targetDir)
include("app.framework/**")
include("app.framework.dSYM")
}
}
converted (so far) from groovy:
task copyFramework {
def buildType = project.findProperty("kotlin.build.type") ?: "DEBUG"
def target = project.findProperty("kotlin.target") ?: "ios"
dependsOn "link${buildType.toLowerCase().capitalize()}Framework${target.capitalize()}"
doLast {
def srcFile = kotlin.targets."$target".compilations.main.getBinary("FRAMEWORK", buildType)
def targetDir = getProperty("configuration.build.dir")
copy {
from srcFile.parent
into targetDir
include 'app.framework/**'
include 'app.framework.dSYM'
}
}
}

Answer 1

Looks like it requires type casting:
val srcFile = (kotlin.targets[target] as KotlinNativeTarget).compilations["main"].getBinary("FRAMEWORK", buildType)