/*
 * Copyright (C) 2025 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.systemui.log

import android.util.Log
import com.android.systemui.CoreStartable
import com.android.systemui.dagger.SysUISingleton
import com.android.systemui.dump.DumpManager
import com.android.systemui.statusbar.commandline.Command
import com.android.systemui.statusbar.commandline.CommandRegistry
import java.io.PrintWriter
import javax.inject.Inject

/**
 * Used to clear all LogBuffers in SystemUI. Useful for testing where we want to reset SysUI state
 * and memory use without restarting it.
 */
@SysUISingleton
class ClearLogBuffersCommand
@Inject
constructor(private val dumpManager: DumpManager, private val commandRegistry: CommandRegistry) :
    Command, CoreStartable {

    override fun start() {
        commandRegistry.registerCommand("clear-log-buffers") { this }
    }

    override fun execute(pw: PrintWriter, args: List<String>) {
        Log.i("ClearLogBuffers", "Clearing all LogBuffers")
        dumpManager.clearBuffers()
    }

    override fun help(pw: PrintWriter) {
        pw.print("Clears all LogBuffers in SystemUI")
        pw.println()
    }
}