Gradle passing arguments to a plugin task - groovy

Question

I have this tasks from gradle-js-plugin:
combineJs {
source = sourceJs
dest = file(destDirJs + "/all.js")
}
minifyJs {
source = combineJs
dest = file( destDirJs + "/all-min.js")
closure {
warningLevel = 'QUIET'
}
}
gzipJs {
source = minifyJs
dest = file(destDirJs + "/all-gzip-min.js")
}
My problem is because I´ll have to change the values of sourceJs, and destDirJs multiple times. So I dont want to have alot of duplicated code.
So I´m trying something like this:
task gzipAll {
sourceJs = ["WebContent/plugin/bootstrap-modal/js/bootstrap-modalmanager.js", "WebContent/plugin/bootstrap-modal/js/bootstrap-modal.js", "WebContent/js/bootstrap-dropdown.js", "WebContent/js/mandatory/bootstrap-analytics-setup.js"]
destDirJs = "WebContent/js/mandatory"
tasks.combineJs().execute;
tasks.minifyJs().execute;
tasks.gzipJs().execute;
//Here I need to change sourceJs and destDir and call all the task again.
}
Actually I was tring a long shot in the dark, and I got the exception:
Caused by: groovy.lang.MissingPropertyException: Could not find property 'sourceJs' on task ':combineJs'.
I also tried something like this, but didnt work. Got some exceptions:
combineJs(sourceJs, destDirJs) {
source = $sourceJs
dest = file($destDirJs + "/all.js")
}
Can anyone with more experience help me solve this ? It´s kinda simple right?
Thanks.

Answer 1

I've not tested it but since gradle scripts are groovy scripts you should be able to do something like this.
['dir1', 'dir2'].eachWithIndex { dir, index ->
task "combineJs_$index"(type: combineJs) {
source = dir
dest = file(destDirJs + "/$index.js")
}
task "minifyJs_$index" (type: minifyJs) {
source = "combineJs_$index"
dest = file( destDirJs + "/$index-min.js")
closure {
warningLevel = 'QUIET'
}
}
task "gzipJs_$index" (type: gzipJs) {
source = "minifyJs_$index"
dest = file(destDirJs + "/$index-gzip-min.js")
}
}
Of course you need the correct TaskTypes and you'll probably need the change the input, but this should get you going.