/*
 * Copyright (C) 2023 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.settings.connecteddevice.audiosharing;

import android.app.Dialog;
import android.app.settings.SettingsEnums;
import android.os.Bundle;
import android.util.Log;
import android.util.Pair;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.VisibleForTesting;
import androidx.appcompat.app.AlertDialog;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.lifecycle.Lifecycle;

import com.android.settings.R;
import com.android.settings.core.instrumentation.InstrumentedDialogFragment;
import com.android.settings.overlay.FeatureFactory;
import com.android.settingslib.bluetooth.BluetoothUtils;
import com.android.settingslib.bluetooth.CachedBluetoothDevice;
import com.android.settingslib.utils.ThreadUtils;

import com.google.common.collect.Iterables;

import java.util.List;
import java.util.Locale;

public class AudioSharingStopDialogFragment extends InstrumentedDialogFragment {
    private static final String TAG = "AudioSharingStopDialog";

    private static final String BUNDLE_KEY_DEVICE_TO_DISCONNECT_ITEMS =
            "bundle_key_device_to_disconnect_items";
    private static final String BUNDLE_KEY_NEW_DEVICE_NAME = "bundle_key_new_device_name";

    // The host creates an instance of this dialog fragment must implement this interface to receive
    // event callbacks.
    public interface DialogEventListener {
        /** Called when users click the stop sharing button in the dialog. */
        void onStopSharingClick();
    }

    @Nullable private static DialogEventListener sListener;
    @Nullable private static CachedBluetoothDevice sCachedDevice;
    private static Pair<Integer, Object>[] sEventData = new Pair[0];

    @Override
    public int getMetricsCategory() {
        return SettingsEnums.DIALOG_STOP_AUDIO_SHARING;
    }

    /**
     * Display the {@link AudioSharingStopDialogFragment} dialog.
     *
     * <p>If the dialog is showing, update the dialog message and event listener.
     *
     * @param host The Fragment this dialog will be hosted.
     * @param deviceItems The existing connected device items in audio sharing session.
     * @param newDevice The latest connected device triggered this dialog.
     * @param listener The callback to handle the user action on this dialog.
     * @param eventData The eventData to log with for dialog onClick events.
     */
    public static void show(
            @Nullable Fragment host,
            @NonNull List<AudioSharingDeviceItem> deviceItems,
            @NonNull CachedBluetoothDevice newDevice,
            @NonNull DialogEventListener listener,
            @NonNull Pair<Integer, Object>[] eventData) {
        if (host == null) {
            Log.d(TAG, "Fail to show dialog, host is null");
            return;
        }
        if (BluetoothUtils.isAudioSharingUIAvailable(host.getContext())) {
            final FragmentManager manager;
            try {
                manager = host.getChildFragmentManager();
            } catch (IllegalStateException e) {
                Log.d(TAG, "Fail to show dialog: " + e.getMessage());
                return;
            }
            Lifecycle.State currentState = host.getLifecycle().getCurrentState();
            if (!currentState.isAtLeast(Lifecycle.State.STARTED)) {
                Log.d(TAG, "Fail to show dialog with state: " + currentState);
                return;
            }
            AlertDialog dialog = AudioSharingDialogHelper.getDialogIfShowing(manager, TAG);
            if (dialog != null) {
                int newGroupId = BluetoothUtils.getGroupId(newDevice);
                if (sCachedDevice != null
                        && newGroupId == BluetoothUtils.getGroupId(sCachedDevice)) {
                    Log.d(
                            TAG,
                            String.format(
                                    Locale.US,
                                    "Dialog is showing for the same device group %d, return.",
                                    newGroupId));
                    sListener = listener;
                    sCachedDevice = newDevice;
                    sEventData = eventData;
                    return;
                } else {
                    Log.d(
                            TAG,
                            String.format(
                                    Locale.US,
                                    "Dialog is showing for new device group %d, "
                                            + "dismiss current dialog.",
                                    newGroupId));
                    dialog.dismiss();
                    logDialogAutoDismiss(dialog);
                }
            }
            sListener = listener;
            sCachedDevice = newDevice;
            sEventData = eventData;
            Log.d(TAG, "Show up the dialog.");
            final Bundle bundle = new Bundle();
            bundle.putParcelableList(BUNDLE_KEY_DEVICE_TO_DISCONNECT_ITEMS, deviceItems);
            bundle.putString(BUNDLE_KEY_NEW_DEVICE_NAME, newDevice.getName());
            AudioSharingStopDialogFragment dialogFrag = new AudioSharingStopDialogFragment();
            dialogFrag.setArguments(bundle);
            dialogFrag.show(manager, TAG);
        }
    }

    /** Return the tag of {@link AudioSharingStopDialogFragment} dialog. */
    public static @NonNull String tag() {
        return TAG;
    }

    /** Get the latest connected device which triggers the dialog. */
    public @Nullable CachedBluetoothDevice getDevice() {
        return sCachedDevice;
    }

    /** Test only: get the {@link DialogEventListener} passed to the dialog. */
    @VisibleForTesting
    @Nullable
    DialogEventListener getListener() {
        return sListener;
    }

    /** Test only: get the event data passed to the dialog. */
    @VisibleForTesting
    @NonNull
    Pair<Integer, Object>[] getEventData() {
        return sEventData;
    }

    @Override
    @NonNull
    public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
        Bundle arguments = requireArguments();
        List<AudioSharingDeviceItem> deviceItems =
                arguments.getParcelable(BUNDLE_KEY_DEVICE_TO_DISCONNECT_ITEMS, List.class);
        String newDeviceName = arguments.getString(BUNDLE_KEY_NEW_DEVICE_NAME);
        String customMessage = "";
        if (deviceItems != null) {
            customMessage =
                    deviceItems.size() == 1
                            ? getString(
                                    R.string.audio_sharing_stop_dialog_content,
                                    Iterables.getOnlyElement(deviceItems).getName())
                            : (deviceItems.size() == 2
                                    ? getString(
                                            R.string.audio_sharing_stop_dialog_with_two_content,
                                            deviceItems.get(0).getName(),
                                            deviceItems.get(1).getName())
                                    : getString(
                                            R.string.audio_sharing_stop_dialog_with_more_content));
        }
        AlertDialog dialog =
                AudioSharingDialogFactory.newBuilder(getActivity())
                        .setTitle(
                                getString(R.string.audio_sharing_stop_dialog_title, newDeviceName))
                        .setTitleIcon(com.android.settings.R.drawable.ic_warning_24dp)
                        .setIsCustomBodyEnabled(true)
                        .setCustomMessage(customMessage)
                        .setPositiveButton(
                                R.string.audio_sharing_connect_button_label,
                                (dlg, which) -> {
                                    if (sListener != null) {
                                        sListener.onStopSharingClick();
                                        mMetricsFeatureProvider.action(
                                                getContext(),
                                                SettingsEnums
                                                .ACTION_AUDIO_SHARING_DIALOG_POSITIVE_BTN_CLICKED,
                                                sEventData);
                                    }
                                })
                        .setNegativeButton(
                                com.android.settings.R.string.cancel,
                                (dlg, which) ->
                                        mMetricsFeatureProvider.action(
                                                getContext(),
                                                SettingsEnums
                                                .ACTION_AUDIO_SHARING_DIALOG_NEGATIVE_BTN_CLICKED,
                                                sEventData))
                        .build();
        dialog.show();
        AudioSharingDialogHelper.updateMessageStyle(dialog);
        return dialog;
    }

    private static void logDialogAutoDismiss(AlertDialog dialog) {
        var unused =
                ThreadUtils.postOnBackgroundThread(
                        () -> FeatureFactory.getFeatureFactory()
                                .getMetricsFeatureProvider()
                                .action(
                                        dialog.getContext(),
                                        SettingsEnums
                                                .ACTION_AUDIO_SHARING_DIALOG_AUTO_DISMISS,
                                        SettingsEnums.DIALOG_STOP_AUDIO_SHARING));
    }
}
