Gradle Increment Version

task incrementVersion << {
    def propsFile = file("../gradle.properties")
    def propsText = propsFile.getText()

    def patternVersionNumber = Pattern.compile("app_version=(\\d+)\\.(\\d+)\\.(\\d+)")
    def matcherVersionNumber = patternVersionNumber.matcher(propsText)
    matcherVersionNumber.find()

    def majorVersion = Integer.parseInt(matcherVersionNumber.group(1))
    def minorVersion = Integer.parseInt(matcherVersionNumber.group(2))
    def patchVersion = Integer.parseInt(matcherVersionNumber.group(3))
    patchVersion++
    if(patchVersion > 15) {
        patchVersion = 0
        minorVersion++
    }
    if(minorVersion > 10) {
        minorVersion = 0
        majorVersion++
    }

    propsText = matcherVersionNumber.replaceAll("app_version=" + majorVersion + "." + minorVersion + "." + patchVersion)
    propsFile.write(propsText)
}