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import groovy.xml.MarkupBuilder

apply plugin: 'com.github.dcendents.android-maven'

// build a jar with source files
task sourcesJar(type: Jar) {
    from android.sourceSets.main.java.srcDirs
    classifier = 'sources'
}

task javadoc(type: Javadoc) {
    failOnError false
    source = android.sourceSets.main.java.sourceFiles
    classpath += project.files(android.getBootClasspath().join(File.pathSeparator))
    classpath += configurations.compile
}

// build a jar with javadoc
task javadocJar(type: Jar, dependsOn: javadoc) {
    classifier = 'javadoc'
    from javadoc.destinationDir
}

artifacts {
    archives sourcesJar
    archives javadocJar
}

// Task to generate our public.xml file
// See https://developer.android.com/studio/projects/android-library.html#PrivateResources
// We assume resources within res-public are public
task generatepublicxml {

    def resDir = project.projectDir.absolutePath + "/src/main/res-public"

    def publicFolder = file(resDir + "/values")
    if (!publicFolder.exists()) publicFolder.mkdirs()

    // Include the desired res types
    // Note: we don't need the qualified resource directories,
    // since those resources will already be defined in the unqualified directories
    // however, there are special cases like transition-v21 that is only available on lollipop and up
    def tree = fileTree(dir: resDir,
            includes: ['**/anim/*.xml',
                       '**/color/*.xml',
                       '**/drawable/*.xml',
                       '**/layout/*.xml',
                       '**/transition-v21/*.xml',
                       '**/values/*.xml'
            ],
            exclude: '**/public.xml'
    )

    println "Generating public XML: ${project.name}"

    // Create new public.xml with writer
    file(resDir + "/values/public.xml").withWriter { writer ->
        // Create MarkupBuilder with 4 space indent
        def destXml = new MarkupBuilder(new IndentPrinter(writer, "    ", true));
        def destXmlMkp = destXml.getMkp();

        // GIST NOTE: our project needed the ResourceName suppression, but its not needed in general
        destXml.resources(
                'xmlns:tools': 'http://schemas.android.com/tools',
                'tools:ignore': 'ResourceName'
        ) {
            // Leave file comment
            destXmlMkp.yield "\r\n"
            destXmlMkp.comment("AUTO-GENERATED FILE. DO NOT MODIFY. public.xml is generated by the generatepublicxml gradle task")

            if (tree.isEmpty())
                "public"("name": "dummy", "type": "id")
            else
                tree.each { resFile ->

                    // use the directory name to get the type
                    def type = resFile.getParentFile().getName()

                    if (type == "values") {
                        // Resource files under values. Parse the file, and pull out the resource definitions
                        def parsePublicResources = new XmlParser().parse(resFile)
                        parsePublicResources.children().each {

                            // Type is usually the element, but sometimes a type attribute is present
                            // example: <item name="line_spacing_multiplier" format="float" type="dimen">1.4</item>
                            type = it.name()
                            if (it.@type) {
                                type = it.@type
                            }

                            // it.@name is value in name=
                            "public"("name": it.@name, "type": type)
                        }
                    } else {
                        // Drawable, layout, etc files
                        "public"("name": resFile.getName().tokenize('.')[0], "type": type.tokenize('-')[0])
                    }
                }
        }
    }
}

build.dependsOn generatepublicxml