package trial

// These are some basic imports for Args4j
import org.kohsuke.args4j.CmdLineException
import org.kohsuke.args4j.CmdLineParser
import org.kohsuke.args4j.{ Option => Args4jOption, Argument } // => renames Option class for clarity


object helper {

  class Options {
    /*
     *  This class is simply a container that holds our options
     */
    @Argument(required = false, metaVar = "INPUT1", usage = "The first ADAM file to compare", index = 0)
    val input1Path: String = null

    @Args4jOption(name = "--help", aliases = Array("-h"), usage = "show this message")
    var help = false

    @Args4jOption(name = "--count", aliases = Array("-c"), depends=Array("INPUT1"), usage = "some val", metaVar = "BLAH")
    var count: Int = 0

    @Args4jOption(name = "--taco", aliases = Array("-t"), usage = "Required Test Taco", metaVar = "TACO")
    var taco = false
  }

  def main(args: Array[String]) {
    val options = new Options // Defines an object from our Options class (could be named anything)
    val parser = new CmdLineParser(options) // Define a parser object from the options objects

    println("Test Print")

    try {
      parser.parseArgument(args: _*) // This line culls the arguments.

      if (options.count != 0) println("You've chosen a new # of Tacos: " + options.count)
      if (options.taco) println("You've opted for TACOS! Taco=" + options.taco)

      if (options.help) {
        parser.printUsage(System.err)
        //println("You Wanted help!")
        sys.exit(0)
      }
    } catch {
      case e: CmdLineException => {
        println("Option Entered Incorrectly by User: ")
        System.err.println(e.getMessage)
        parser.printUsage(System.err)
        sys.exit(1)
      }
    }
  }
}