package org.openmole.gui.server.jscompile

/*
 * Copyright (C) 02/10/14 // mathieu.leclaire@openmole.org
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import org.openmole.tool.stream._
import org.scalajs.linker.interface._

import scala.concurrent.Await
import scala.concurrent.duration.Duration
import org.scalajs.linker._
import java.io.File

import org.openmole.tool.file._
import org.openmole.core.workspace._
import org.scalajs.logging.{ NullLogger, ScalaConsoleLogger }

object JSPack {

  implicit val ec: scala.concurrent.ExecutionContext = scala.concurrent.ExecutionContext.global

  def link(inputDirectory: File, outputJSFile: File, optimizedJS: Boolean)(implicit newFile: TmpDirectory): Unit =
    newFile.withTmpFile("lib", ".jar") { jar ⇒

      JSPack.getClass.getClassLoader.getResourceAsStream("scalajs-library.jar") copy jar

      // Obtain VirtualScalaJSIRFile's from the input classpath
      val irCache = StandardImpl.irFileCache().newCache

      val result = (for {
        (containers, _) ← PathIRContainer.fromClasspath(Seq(jar.toPath, inputDirectory.toPath))
        sjsirFiles ← irCache.cached(containers)
        config = StandardConfig()
          .withOptimizer(true)
          .withSourceMap(true)
          .withClosureCompilerIfAvailable(optimizedJS)

        linker = StandardImpl.linker(config)
        _ ← linker.link(sjsirFiles, Nil, LinkerOutput(PathOutputFile(outputJSFile.toPath)), NullLogger)
      } yield ())

      Await.result(result, Duration.Inf)
    }
}