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path: root/build-system/gradle-core/src/main/java/com/android/build/gradle/internal/dsl/KotlinMultiplatformAndroidExtensionImpl.kt
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/*
 * Copyright (C) 2022 The Android Open Source Project
 *
 * 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 com.android.build.gradle.internal.dsl

import com.android.build.api.dsl.ApkSigningConfig
import com.android.build.api.variant.AndroidVersion
import com.android.build.api.variant.impl.KotlinMultiplatformAndroidVariant
import com.android.build.api.variant.impl.MutableAndroidVersion
import com.android.build.gradle.internal.dsl.decorator.annotation.WithLazyInitialization
import com.android.build.gradle.internal.packaging.getDefaultDebugKeystoreLocation
import com.android.build.gradle.internal.services.AndroidLocationsBuildService
import com.android.build.gradle.internal.services.DslServices
import com.android.build.gradle.internal.services.getBuildService
import com.android.builder.core.LibraryRequest
import com.android.builder.core.ToolsRevisionUtils
import com.android.builder.signing.DefaultSigningConfig
import org.gradle.api.Action
import javax.inject.Inject

abstract class KotlinMultiplatformAndroidExtensionImpl @Inject @WithLazyInitialization("lazyInit") constructor(
    private val dslServices: DslServices
): KotlinMultiplatformAndroidExtension, Lockable {

    fun lazyInit() {
        buildToolsVersion = ToolsRevisionUtils.DEFAULT_BUILD_TOOLS_REVISION.toString()
        DefaultSigningConfig.DebugSigningConfig(
            getBuildService(
                dslServices.buildServiceRegistry,
                AndroidLocationsBuildService::class.java
            ).get().getDefaultDebugKeystoreLocation()
        ).copyToSigningConfig(signingConfig)
    }

    override val testOptions: TestOptions =
        dslServices.newInstance(TestOptions::class.java, dslServices)

    abstract val libraryRequests: MutableList<LibraryRequest>

    override fun useLibrary(name: String) {
        useLibrary(name, true)
    }

    override fun useLibrary(name: String, required: Boolean) {
        libraryRequests.add(LibraryRequest(name, required))
    }

    override val installation = dslServices.newDecoratedInstance(
        AdbOptions::class.java,
        dslServices
    )

    var signingConfig = dslServices.newDecoratedInstance(
        SigningConfig::class.java, "kotlinAndroidInstrumentation", dslServices
    )

    override fun testSigningConfig(action: ApkSigningConfig.() -> Unit) {
        action.invoke(signingConfig)
    }

    internal val minSdkVersion: MutableAndroidVersion
        get() = mutableMinSdk?.sanitize()?.let { MutableAndroidVersion(it.apiLevel, it.codename) }
            ?: MutableAndroidVersion(1)

    private var mutableMinSdk: MutableAndroidVersion? = null

    override var minSdk: Int?
        get() = mutableMinSdk?.api
        set(value) {
            val min =
                mutableMinSdk ?: MutableAndroidVersion(null, null).also {
                    mutableMinSdk = it
                }
            min.codename = null
            min.api = value
        }

    override var minSdkPreview: String?
        get() = mutableMinSdk?.codename
        set(value) {
            val min =
                mutableMinSdk ?: MutableAndroidVersion(null, null).also {
                    mutableMinSdk = it
                }
            min.codename = value
            min.api = null
        }

    internal val testTargetSdkVersion: AndroidVersion?
        get() = mutableTargetSdk?.sanitize()

    private var mutableTargetSdk: MutableAndroidVersion? = null

    override var testTargetSdk: Int?
        get() = mutableTargetSdk?.api
        set(value) {
            val target =
                mutableTargetSdk ?: MutableAndroidVersion(null, null).also {
                    mutableTargetSdk = it
                }
            target.codename = null
            target.api = value
        }

    override var testTargetSdkPreview: String?
        get() = mutableTargetSdk?.codename
        set(value) {
            val target =
                mutableTargetSdk ?: MutableAndroidVersion(null, null).also {
                    mutableTargetSdk = it
                }
            target.codename = value
            target.api = null
        }

    private val variantOperations = mutableListOf<Action<KotlinMultiplatformAndroidVariant>>()
    private var actionsExecuted = false

    override fun onVariant(callback: KotlinMultiplatformAndroidVariant.() -> Unit) {
        if (actionsExecuted) {
            throw RuntimeException(
                """
                It is too late to add actions as the callbacks already executed.
                Did you try to call beforeVariants or onVariants from the old variant API
                'applicationVariants' for instance ? you should always call beforeVariants or
                onVariants directly from the androidComponents DSL block.
                """
            )
        }

        variantOperations.add(callback)
    }

    fun executeVariantOperations(variant: KotlinMultiplatformAndroidVariant) {
        actionsExecuted = true
        variantOperations.forEach {
            it.execute(variant)
        }
    }
}