import java.io.{ File, FileWriter }
import scala.sys.process.Process

object Main {

  val MEX_HOME = "/home/itang/mex/workspace/mex-front-side"

  val JAR_FILE = MEX_HOME + "/target/tdb-0.1.0-SNAPSHOT.jar"

  val TARGET_DIR = "/tmp/mex_scala"

  val TARGET_LIB_DIR = TARGET_DIR + "/lib"

  implicit class sw(s: String) {
    def exec() = Process(s.split("\\s").toList, new File(MEX_HOME)).!!
    def writeTo(file: File) = {
      val writer = new FileWriter(file)
      writer.write(s)
      writer.close()
    }
  }

  def main(args: Array[String]): Unit = {
    prepare()
    taskJar()
    taskCopyLibs()
    taskRunShell()

    System.exit(0)
  }

  def prepare(): Unit = {
    s"rm -rf $TARGET_DIR".exec
    s"mkdir -p $TARGET_LIB_DIR".exec
  }

  def taskJar(): Unit = {
    s"lein jar".exec
    s"cp $JAR_FILE $TARGET_LIB_DIR".exec
  }

  def taskCopyLibs(): Unit = {
    val cps: String = s"lein with-profile uberjar classpath".exec
    for (jar ← cps.split(":").filter(_.endsWith(".jar"))) {
      s"cp $jar $TARGET_LIB_DIR".exec
    }
  }

  def taskRunShell() = {
    val cps = new File(TARGET_LIB_DIR).listFiles().map(_.getAbsolutePath).toList.mkString(":")
    val content = s"""#!/bin/bash

export RUN_MODE=prod
export DATA_DIR=./data

CLASSPATH=${cps}

nohup java -Xms1g -Xmx2g -Xss1M -XX:MaxPermSize=392m -cp $$CLASSPATH clojure.main -m app.core &

"""

    content writeTo new File(TARGET_DIR, "run.sh")
  }
}