/*
 * Copyright (C) 2021 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.qs.tiles.dialog

import android.util.Log
import com.android.internal.jank.InteractionJankMonitor
import com.android.systemui.animation.DialogCuj
import com.android.systemui.animation.DialogTransitionAnimator
import com.android.systemui.animation.Expandable
import com.android.systemui.dagger.SysUISingleton
import com.android.systemui.dagger.qualifiers.Background
import com.android.systemui.statusbar.phone.SystemUIDialog
import javax.inject.Inject
import kotlinx.coroutines.CoroutineDispatcher
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.cancel

private const val TAG = "InternetDialogFactory"
private val DEBUG = Log.isLoggable(TAG, Log.DEBUG)

/** Factory to create [InternetDialogDelegate] objects. */
@SysUISingleton
class InternetDialogManager
@Inject
constructor(
    private val dialogTransitionAnimator: DialogTransitionAnimator,
    private val dialogFactory: InternetDialogDelegate.Factory,
    @Background private val bgDispatcher: CoroutineDispatcher,
) {
    private lateinit var coroutineScope: CoroutineScope
    companion object {
        private const val INTERACTION_JANK_TAG = "internet"
        var dialog: SystemUIDialog? = null
    }

    /**
     * Creates a [InternetDialogDelegate]. The dialog will be animated from [expandable] if it is
     * not null.
     */
    fun create(
        aboveStatusBar: Boolean,
        canConfigMobileData: Boolean,
        canConfigWifi: Boolean,
        expandable: Expandable?
    ) {
        if (dialog != null) {
            if (DEBUG) {
                Log.d(TAG, "InternetDialog is showing, do not create it twice.")
            }
            return
        } else {
            coroutineScope = CoroutineScope(bgDispatcher)
            dialog =
                dialogFactory
                    .create(aboveStatusBar, canConfigMobileData, canConfigWifi, coroutineScope)
                    .createDialog()
            val controller =
                expandable?.dialogTransitionController(
                    DialogCuj(InteractionJankMonitor.CUJ_SHADE_DIALOG_OPEN, INTERACTION_JANK_TAG)
                )
            controller?.let {
                dialogTransitionAnimator.show(
                    dialog!!,
                    controller,
                    animateBackgroundBoundsChange = true
                )
            }
                ?: dialog?.show()
        }
    }

    fun destroyDialog() {
        if (DEBUG) {
            Log.d(TAG, "destroyDialog")
        }
        if (dialog != null) {
            coroutineScope.cancel()
        }
        dialog = null
    }
}