/*
 * Copyright 2010-2017 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.idea.refactoring.move

import com.intellij.psi.PsiDirectory
import com.intellij.refactoring.MoveDestination
import org.jetbrains.kotlin.idea.core.getPackage

sealed class AutocreatingPsiDirectoryWrapper {
    class ByPsiDirectory(private val psiDirectory: PsiDirectory) : AutocreatingPsiDirectoryWrapper() {
        override fun getPackageName(): String = psiDirectory.getPackage()?.qualifiedName ?: ""
        override fun getOrCreateDirectory(source: PsiDirectory) = psiDirectory
    }

    class ByMoveDestination(private val moveDestination: MoveDestination) : AutocreatingPsiDirectoryWrapper() {
        override fun getPackageName() = moveDestination.targetPackage.qualifiedName
        override fun getOrCreateDirectory(source: PsiDirectory) = moveDestination.getTargetDirectory(source)
    }

    abstract fun getPackageName(): String
    abstract fun getOrCreateDirectory(source: PsiDirectory): PsiDirectory
}

fun MoveDestination.toDirectoryWrapper() = AutocreatingPsiDirectoryWrapper.ByMoveDestination(this)
fun PsiDirectory.toDirectoryWrapper() = AutocreatingPsiDirectoryWrapper.ByPsiDirectory(this)