apply plugin: "jacoco"

allprojects {
    tasks.withType(Test) {
        jacoco {
            toolVersion = '0.8.1'
        }

        afterEvaluate {
            jacocoTestReport {
                dependsOn tasks.test

                sourceSets sourceSets.main
                reports {
                    html.enabled = true
                    xml.enabled = true
                    csv.enabled = false
                }
            }
        }
    }
}

task jacocoTestReport(type: JacocoReport) {
    sourceDirectories = files()
    classDirectories = files()
    executionData = files()

    reports {
        html.enabled = true
        xml.enabled = true
        csv.enabled = false
    }

    // Work-around to allow us to build list of executionData files in doFirst
    onlyIf = {
        true
    }

    /*
     * Builds list of source dirs, class dirs, and executionData files
     * when task is run, not at script evaluation time
     */
    doFirst {
        subprojects.findAll { subproject ->
            subproject.pluginManager.hasPlugin('java') || subproject.pluginManager.hasPlugin('kotlin')
        }.each { subproject ->
            additionalSourceDirs files((Set<File>) subproject.sourceSets.main.allJava.srcDirs)
            additionalClassDirs((FileCollection) subproject.sourceSets.main.output)
            if (subproject.pluginManager.hasPlugin('jacoco')) {
                executionData subproject.tasks.jacocoTestReport.executionData
            }
        }

        executionData = files(executionData.findAll {
            it.exists()
        })
    }
}