/*
 * Copyright (C) 2024 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.app.viewcapture

import android.content.Context
import android.os.Process
import android.util.Log

/**
 * Factory to create polymorphic instances of ViewCapture according to build configurations and
 * flags.
 */
object ViewCaptureFactory {
    private val TAG = ViewCaptureFactory::class.java.simpleName
    private val instance: ViewCapture by lazy { createInstance() }
    private lateinit var appContext: Context

    private fun createInstance(): ViewCapture {
        return if (!android.os.Build.IS_DEBUGGABLE) {
            Log.i(TAG, "instantiating ${NoOpViewCapture::class.java.simpleName}")
            NoOpViewCapture()
        } else {
            Log.i(TAG, "instantiating ${PerfettoViewCapture::class.java.simpleName}")
            PerfettoViewCapture(
                appContext,
                ViewCapture.createAndStartNewLooperExecutor(
                    "PerfettoViewCapture",
                    Process.THREAD_PRIORITY_FOREGROUND,
                ),
            )
        }
    }

    /** Returns an instance of [ViewCapture]. */
    @JvmStatic
    fun getInstance(context: Context): ViewCapture {
        if (!this::appContext.isInitialized) {
            synchronized(this) { appContext = context.applicationContext }
        }
        return instance
    }
}