/*
 * Copyright 2010-2015 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jetbrains.kotlin.cli

import com.intellij.execution.configurations.GeneralCommandLine
import com.intellij.execution.util.ExecUtil
import com.intellij.openapi.util.SystemInfo
import com.intellij.openapi.util.text.StringUtil
import org.jetbrains.kotlin.test.KotlinTestUtils
import org.jetbrains.kotlin.test.TestCaseWithTmpdir
import org.jetbrains.kotlin.utils.PathUtil
import java.io.File

class LauncherScriptTest : TestCaseWithTmpdir() {
    private fun runProcess(
            executableName: String,
            vararg args: String,
            expectedStdout: String = "",
            expectedStderr: String = "",
            expectedExitCode: Int = 0,
            workDirectory: File? = null
    ) {
        val executableFileName = if (SystemInfo.isWindows) "$executableName.bat" else executableName
        val launcherFile = File(PathUtil.kotlinPathsForDistDirectory.homePath, "bin/$executableFileName")
        assertTrue("Launcher script not found, run dist task: ${launcherFile.absolutePath}", launcherFile.exists())

        val cmd = GeneralCommandLine(launcherFile.absolutePath, *args)
        workDirectory?.let(cmd::withWorkDirectory)
        val processOutput = ExecUtil.execAndGetOutput(cmd)
        val stdout = StringUtil.convertLineSeparators(processOutput.stdout)
        val stderr = StringUtil.convertLineSeparators(processOutput.stderr).replace("Picked up [_A-Z]+:.*\n".toRegex(), "")
        val exitCode = processOutput.exitCode

        try {
            assertEquals(expectedStdout, stdout)
            assertEquals(expectedStderr, stderr)
            assertEquals(expectedExitCode, exitCode)
        }
        catch (e: Throwable) {
            System.err.println("exit code $exitCode")
            System.err.println("=== STDOUT ===")
            System.err.println(stdout)
            System.err.println("=== STDERR ===")
            System.err.println(stderr)
            throw e
        }
    }

    private val testDataDirectory: String
        get() = KotlinTestUtils.getTestDataPathBase() + "/launcher"

    fun testKotlincSimple() {
        runProcess(
                "kotlinc",
                "$testDataDirectory/helloWorld.kt",
                "-d", tmpdir.path
        )
    }

    fun testKotlincJvmSimple() {
        runProcess(
                "kotlinc-jvm",
                "$testDataDirectory/helloWorld.kt",
                "-d", tmpdir.path
        )
    }

    fun testKotlincJsSimple() {
        runProcess(
                "kotlinc-js",
                "$testDataDirectory/emptyMain.kt",
                "-output", File(tmpdir, "out.js").path
        )
    }

    fun testKotlinNoReflect() {
        runProcess(
                "kotlinc",
                "$testDataDirectory/reflectionUsage.kt",
                "-d", tmpdir.path
        )

        runProcess(
                "kotlin",
                "-cp", tmpdir.path,
                "-no-reflect",
                "ReflectionUsageKt",
                expectedStdout = "no reflection"
        )
    }

    fun testDoNotAppendCurrentDirToNonEmptyClasspath() {
        runProcess(
                "kotlinc",
                "$testDataDirectory/helloWorld.kt",
                "-d", tmpdir.path
        )

        runProcess("kotlin", "test.HelloWorldKt", expectedStdout = "Hello!\n", workDirectory = tmpdir)

        val emptyDir = KotlinTestUtils.tmpDirForTest(this)
        runProcess(
                "kotlin",
                "-cp", emptyDir.path,
                "test.HelloWorldKt",
                expectedStderr = "error: could not find or load main class test.HelloWorldKt\n",
                expectedExitCode = 1,
                workDirectory = tmpdir
        )
    }
}