/*
 * 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 static com.android.settingslib.bluetooth.LocalBluetoothLeBroadcast.EXTRA_BT_DEVICE_TO_AUTO_ADD_SOURCE;

import android.app.Activity;
import android.app.settings.SettingsEnums;
import android.bluetooth.BluetoothDevice;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.provider.Settings;
import android.util.Log;

import androidx.annotation.Nullable;
import androidx.annotation.VisibleForTesting;

import com.android.settings.R;
import com.android.settings.SettingsActivity;
import com.android.settings.connecteddevice.audiosharing.audiostreams.AudioStreamsCategoryController;
import com.android.settings.dashboard.DashboardFragment;
import com.android.settings.widget.SettingsMainSwitchBar;
import com.android.settingslib.bluetooth.BluetoothUtils;
import com.android.settingslib.utils.ThreadUtils;

public class AudioSharingDashboardFragment extends DashboardFragment
        implements AudioSharingSwitchBarController.OnAudioSharingStateChangedListener {
    private static final String TAG = "AudioSharingDashboardFrag";

    public static final int SHARE_THEN_PAIR_REQUEST_CODE = 1002;

    public static final String IS_SHOWING_AUDIO_SHARING_DASHBOARD_KEY =
            "is_showing_audio_sharing_dashboard";
    public static final int SHOWING_AUDIO_SHARING_DASHBOARD = 1;
    public static final int NOT_SHOWING_AUDIO_SHARING_DASHBOARD = 0;

    SettingsMainSwitchBar mMainSwitchBar;
    private Context mContext;
    private AudioSharingDeviceVolumeGroupController mAudioSharingDeviceVolumeGroupController;
    private AudioSharingCallAudioPreferenceController mAudioSharingCallAudioPreferenceController;
    private AudioSharingPlaySoundPreferenceController mAudioSharingPlaySoundPreferenceController;
    private AudioStreamsCategoryController mAudioStreamsCategoryController;
    private AudioSharingSwitchBarController mAudioSharingSwitchBarController;

    public AudioSharingDashboardFragment() {
        super();
    }

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

    @Override
    protected String getLogTag() {
        return TAG;
    }

    @Override
    public int getHelpResource() {
        return R.string.help_url_audio_sharing;
    }

    @Override
    protected int getPreferenceScreenResId() {
        return R.xml.bluetooth_le_audio_sharing;
    }

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        mContext = context;
        mAudioSharingDeviceVolumeGroupController =
                use(AudioSharingDeviceVolumeGroupController.class);
        mAudioSharingDeviceVolumeGroupController.init(this);
        mAudioSharingCallAudioPreferenceController =
                use(AudioSharingCallAudioPreferenceController.class);
        mAudioSharingCallAudioPreferenceController.init(this);
        mAudioSharingPlaySoundPreferenceController =
                use(AudioSharingPlaySoundPreferenceController.class);
        mAudioStreamsCategoryController = use(AudioStreamsCategoryController.class);
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        // Assume we are in a SettingsActivity. This is only safe because we currently use
        // SettingsActivity as base for all preference fragments.
        final SettingsActivity activity = (SettingsActivity) getActivity();
        mMainSwitchBar = activity.getSwitchBar();
        mMainSwitchBar.setTitle(getText(R.string.audio_sharing_switch_title));
        mAudioSharingSwitchBarController =
                new AudioSharingSwitchBarController(activity, mMainSwitchBar, this);
        mAudioSharingSwitchBarController.init(this);
        getSettingsLifecycle().addObserver(mAudioSharingSwitchBarController);
        mMainSwitchBar.show();
    }

    @Override
    public void onResume() {
        super.onResume();
        // TODO(b/395058868): Remove this if it's decided this is not needed.
        setAudioSharingDashboardSettingsGlobal(true);
    }

    @Override
    public void onPause() {
        super.onPause();
        // TODO(b/395058868): Remove this if it's decided this is not needed.
        setAudioSharingDashboardSettingsGlobal(false);
    }

    private void setAudioSharingDashboardSettingsGlobal(Boolean isShowingAudioSharingDashboard) {
        var unused =
                ThreadUtils.postOnBackgroundThread(
                        () -> {
                            int value =
                                    isShowingAudioSharingDashboard
                                            ? SHOWING_AUDIO_SHARING_DASHBOARD
                                            : NOT_SHOWING_AUDIO_SHARING_DASHBOARD;
                            Settings.Global.putInt(
                                    mContext.getContentResolver(),
                                    IS_SHOWING_AUDIO_SHARING_DASHBOARD_KEY,
                                    value);
                        });
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (BluetoothUtils.isAudioSharingUIAvailable(mContext)) {
            // In share then pair flow, after users be routed to pair new device page and
            // successfully pair and connect an LEA headset, the pair fragment will be finished with
            // RESULT_OK and EXTRA_BT_DEVICE_TO_AUTO_ADD_SOURCE, pass the BT device to switch bar
            // controller, which is responsible for adding source to the device with loading
            // indicator.
            if (requestCode == SHARE_THEN_PAIR_REQUEST_CODE) {
                if (resultCode == Activity.RESULT_OK) {
                    BluetoothDevice btDevice =
                            data != null
                                    ? data.getParcelableExtra(EXTRA_BT_DEVICE_TO_AUTO_ADD_SOURCE,
                                    BluetoothDevice.class)
                                    : null;
                    Log.d(TAG, "onActivityResult: RESULT_OK with device = " + btDevice);
                    if (btDevice != null) {
                        var unused = ThreadUtils.postOnBackgroundThread(
                                () -> mAudioSharingSwitchBarController.handleAutoAddSourceAfterPair(
                                        btDevice));
                    }
                }
            }
        }
    }

    @Override
    public void onAudioSharingStateChanged() {
        updateVisibilityForAttachedPreferences();
    }

    @Override
    public void onAudioSharingProfilesConnected() {
        onProfilesConnectedForAttachedPreferences();
    }

    /** Test only: set mock controllers for the {@link AudioSharingDashboardFragment} */
    @VisibleForTesting
    void setControllers(
            AudioSharingDeviceVolumeGroupController volumeGroupController,
            AudioSharingCallAudioPreferenceController callAudioController,
            AudioSharingPlaySoundPreferenceController playSoundController,
            AudioStreamsCategoryController streamsCategoryController,
            AudioSharingSwitchBarController switchBarController) {
        mAudioSharingDeviceVolumeGroupController = volumeGroupController;
        mAudioSharingCallAudioPreferenceController = callAudioController;
        mAudioSharingPlaySoundPreferenceController = playSoundController;
        mAudioStreamsCategoryController = streamsCategoryController;
        mAudioSharingSwitchBarController = switchBarController;
    }

    private void updateVisibilityForAttachedPreferences() {
        mAudioSharingDeviceVolumeGroupController.updateVisibility();
        mAudioSharingCallAudioPreferenceController.updateVisibility();
        mAudioSharingPlaySoundPreferenceController.updateVisibility();
        mAudioStreamsCategoryController.updateVisibility();
    }

    private void onProfilesConnectedForAttachedPreferences() {
        mAudioSharingDeviceVolumeGroupController.onAudioSharingProfilesConnected();
    }
}