/*
 * Copyright (C) 2020 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.statusbar.notification.row;

import static android.app.NotificationManager.BUBBLE_PREFERENCE_ALL;
import static android.app.NotificationManager.BUBBLE_PREFERENCE_NONE;
import static android.app.NotificationManager.BUBBLE_PREFERENCE_SELECTED;
import static android.app.NotificationManager.IMPORTANCE_DEFAULT;
import static android.app.NotificationManager.IMPORTANCE_LOW;
import static android.app.NotificationManager.IMPORTANCE_UNSPECIFIED;
import static android.app.NotificationManager.Policy.CONVERSATION_SENDERS_ANYONE;
import static android.app.NotificationManager.Policy.CONVERSATION_SENDERS_IMPORTANT;

import static com.android.systemui.animation.Interpolators.FAST_OUT_SLOW_IN;

import static java.lang.annotation.RetentionPolicy.SOURCE;

import android.annotation.IntDef;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.app.INotificationManager;
import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationChannelGroup;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.ShortcutInfo;
import android.content.pm.ShortcutManager;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Handler;
import android.os.RemoteException;
import android.os.UserHandle;
import android.os.UserManager;
import android.service.notification.StatusBarNotification;
import android.text.TextUtils;
import android.transition.ChangeBounds;
import android.transition.Fade;
import android.transition.TransitionManager;
import android.transition.TransitionSet;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.view.accessibility.AccessibilityEvent;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.android.internal.annotations.VisibleForTesting;
import com.android.settingslib.notification.ConversationIconFactory;
import com.android.systemui.R;
import com.android.systemui.dagger.qualifiers.Background;
import com.android.systemui.dagger.qualifiers.Main;
import com.android.systemui.people.widget.PeopleSpaceWidgetManager;
import com.android.systemui.shade.ShadeController;
import com.android.systemui.statusbar.notification.NotificationChannelHelper;
import com.android.systemui.statusbar.notification.collection.NotificationEntry;
import com.android.systemui.statusbar.notification.stack.StackStateAnimator;
import com.android.systemui.wmshell.BubblesManager;

import java.lang.annotation.Retention;
import java.util.Optional;

/**
 * The guts of a conversation notification revealed when performing a long press.
 */
public class NotificationConversationInfo extends LinearLayout implements
        NotificationGuts.GutsContent {
    private static final String TAG = "ConversationGuts";

    private INotificationManager mINotificationManager;
    private ShortcutManager mShortcutManager;
    private PackageManager mPm;
    private PeopleSpaceWidgetManager mPeopleSpaceWidgetManager;
    private ConversationIconFactory mIconFactory;
    private OnUserInteractionCallback mOnUserInteractionCallback;
    private Handler mMainHandler;
    private Handler mBgHandler;
    private Optional<BubblesManager> mBubblesManagerOptional;
    private ShadeController mShadeController;
    private String mPackageName;
    private String mAppName;
    private int mAppUid;
    private String mDelegatePkg;
    private NotificationChannel mNotificationChannel;
    private ShortcutInfo mShortcutInfo;
    private NotificationEntry mEntry;
    private StatusBarNotification mSbn;
    @Nullable private Notification.BubbleMetadata mBubbleMetadata;
    private Context mUserContext;
    private boolean mIsDeviceProvisioned;
    private int mAppBubble;

    private TextView mPriorityDescriptionView;
    private TextView mDefaultDescriptionView;
    private TextView mSilentDescriptionView;

    private @Action int mSelectedAction = -1;
    private boolean mPressedApply;

    private OnSettingsClickListener mOnSettingsClickListener;
    private NotificationGuts mGutsContainer;
    private OnConversationSettingsClickListener mOnConversationSettingsClickListener;

    private UserManager mUm;

    @VisibleForTesting
    boolean mSkipPost = false;
    private int mActualHeight;

    @Retention(SOURCE)
    @IntDef({ACTION_DEFAULT, ACTION_HOME, ACTION_FAVORITE, ACTION_SNOOZE, ACTION_MUTE,
            ACTION_SETTINGS})
    private @interface Action {}
    static final int ACTION_DEFAULT = 0;
    static final int ACTION_HOME = 1;
    static final int ACTION_FAVORITE = 2;
    static final int ACTION_SNOOZE = 3;
    static final int ACTION_MUTE = 4;
    static final int ACTION_SETTINGS = 5;

    private OnClickListener mOnFavoriteClick = v -> {
        setSelectedAction(ACTION_FAVORITE);
        updateToggleActions(mSelectedAction, true);
    };

    private OnClickListener mOnDefaultClick = v -> {
        setSelectedAction(ACTION_DEFAULT);
        updateToggleActions(mSelectedAction, true);
    };

    private OnClickListener mOnMuteClick = v -> {
        setSelectedAction(ACTION_MUTE);
        updateToggleActions(mSelectedAction, true);
    };

    private OnClickListener mOnDone = v -> {
        mPressedApply = true;

        // If the user selected Priority and the previous selection was not priority, show a
        // People Tile add request.
        if (mSelectedAction == ACTION_FAVORITE && getPriority() != mSelectedAction) {
            mShadeController.animateCollapseShade();
            if (mUm.isSameProfileGroup(UserHandle.USER_SYSTEM, mSbn.getNormalizedUserId())) {
                mPeopleSpaceWidgetManager.requestPinAppWidget(mShortcutInfo, new Bundle());
            }
        }
        mGutsContainer.closeControls(v, /* save= */ true);
    };

    public NotificationConversationInfo(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public interface OnSettingsClickListener {
        void onClick(View v, NotificationChannel channel, int appUid);
    }

    public interface OnConversationSettingsClickListener {
        void onClick();
    }

    public interface OnAppSettingsClickListener {
        void onClick(View v, Intent intent);
    }

    @VisibleForTesting
    void setSelectedAction(int selectedAction) {
        if (mSelectedAction == selectedAction) {
            return;
        }

        mSelectedAction = selectedAction;
    }

    public void bindNotification(
            ShortcutManager shortcutManager,
            PackageManager pm,
            UserManager um,
            PeopleSpaceWidgetManager peopleSpaceWidgetManager,
            INotificationManager iNotificationManager,
            OnUserInteractionCallback onUserInteractionCallback,
            String pkg,
            NotificationChannel notificationChannel,
            NotificationEntry entry,
            Notification.BubbleMetadata bubbleMetadata,
            OnSettingsClickListener onSettingsClick,
            ConversationIconFactory conversationIconFactory,
            Context userContext,
            boolean isDeviceProvisioned,
            @Main Handler mainHandler,
            @Background Handler bgHandler,
            OnConversationSettingsClickListener onConversationSettingsClickListener,
            Optional<BubblesManager> bubblesManagerOptional,
            ShadeController shadeController) {
        mINotificationManager = iNotificationManager;
        mPeopleSpaceWidgetManager = peopleSpaceWidgetManager;
        mOnUserInteractionCallback = onUserInteractionCallback;
        mPackageName = pkg;
        mEntry = entry;
        mSbn = entry.getSbn();
        mPm = pm;
        mUm = um;
        mAppName = mPackageName;
        mOnSettingsClickListener = onSettingsClick;
        mNotificationChannel = notificationChannel;
        mAppUid = mSbn.getUid();
        mDelegatePkg = mSbn.getOpPkg();
        mIsDeviceProvisioned = isDeviceProvisioned;
        mOnConversationSettingsClickListener = onConversationSettingsClickListener;
        mIconFactory = conversationIconFactory;
        mUserContext = userContext;
        mBubbleMetadata = bubbleMetadata;
        mBubblesManagerOptional = bubblesManagerOptional;
        mShadeController = shadeController;
        mMainHandler = mainHandler;
        mBgHandler = bgHandler;
        mShortcutManager = shortcutManager;
        mShortcutInfo = entry.getRanking().getConversationShortcutInfo();
        if (mShortcutInfo == null) {
            throw new IllegalArgumentException("Does not have required information");
        }

        mNotificationChannel = NotificationChannelHelper.createConversationChannelIfNeeded(
                getContext(), mINotificationManager, entry, mNotificationChannel);

        try {
            mAppBubble = mINotificationManager.getBubblePreferenceForPackage(mPackageName, mAppUid);
        } catch (RemoteException e) {
            Log.e(TAG, "can't reach OS", e);
            mAppBubble = BUBBLE_PREFERENCE_SELECTED;
        }

        bindHeader();
        bindActions();

        View done = findViewById(R.id.done);
        done.setOnClickListener(mOnDone);
        done.setAccessibilityDelegate(mGutsContainer.getAccessibilityDelegate());
    }

    private void bindActions() {

        // TODO: b/152050825
        /*
        Button home = findViewById(R.id.home);
        home.setOnClickListener(mOnHomeClick);
        home.setVisibility(mShortcutInfo != null
                && mShortcutManager.isRequestPinShortcutSupported()
                ? VISIBLE : GONE);

        Button snooze = findViewById(R.id.snooze);
        snooze.setOnClickListener(mOnSnoozeClick);
        */

        TextView defaultSummaryTextView = findViewById(R.id.default_summary);
        if (mAppBubble == BUBBLE_PREFERENCE_ALL
                && BubblesManager.areBubblesEnabled(mContext, mSbn.getUser())) {
            defaultSummaryTextView.setText(getResources().getString(
                    R.string.notification_channel_summary_default_with_bubbles, mAppName));
        } else {
            defaultSummaryTextView.setText(getResources().getString(
                    R.string.notification_channel_summary_default));
        }

        findViewById(R.id.priority).setOnClickListener(mOnFavoriteClick);
        findViewById(R.id.default_behavior).setOnClickListener(mOnDefaultClick);
        findViewById(R.id.silence).setOnClickListener(mOnMuteClick);

        final View settingsButton = findViewById(R.id.info);
        settingsButton.setOnClickListener(getSettingsOnClickListener());
        settingsButton.setVisibility(settingsButton.hasOnClickListeners() ? VISIBLE : GONE);

        updateToggleActions(mSelectedAction == -1 ? getPriority() : mSelectedAction,
                false);
    }

    private void bindHeader() {
        bindConversationDetails();

        // Delegate
        bindDelegate();
    }

    private OnClickListener getSettingsOnClickListener() {
        if (mAppUid >= 0 && mOnSettingsClickListener != null && mIsDeviceProvisioned) {
            final int appUidF = mAppUid;
            return ((View view) -> {
                mOnSettingsClickListener.onClick(view, mNotificationChannel, appUidF);
            });
        }
        return null;
    }

    private void bindConversationDetails() {
        final TextView channelName = findViewById(R.id.parent_channel_name);
        channelName.setText(mNotificationChannel.getName());

        bindGroup();
        // TODO: bring back when channel name does not include name
        // bindName();
        bindPackage();
        bindIcon(mNotificationChannel.isImportantConversation());

        mPriorityDescriptionView = findViewById(R.id.priority_summary);
        if (willShowAsBubble() && willBypassDnd()) {
            mPriorityDescriptionView.setText(R.string.notification_channel_summary_priority_all);
        } else if (willShowAsBubble()) {
            mPriorityDescriptionView.setText(R.string.notification_channel_summary_priority_bubble);
        } else if (willBypassDnd()) {
            mPriorityDescriptionView.setText(R.string.notification_channel_summary_priority_dnd);
        } else {
            mPriorityDescriptionView.setText(
                    R.string.notification_channel_summary_priority_baseline);
        }
    }

    private void bindIcon(boolean important) {
        Drawable person =  mIconFactory.getBaseIconDrawable(mShortcutInfo);
        if (person == null) {
            person = mContext.getDrawable(R.drawable.ic_person).mutate();
            TypedArray ta = mContext.obtainStyledAttributes(new int[]{android.R.attr.colorAccent});
            int colorAccent = ta.getColor(0, 0);
            ta.recycle();
            person.setTint(colorAccent);
        }
        ImageView image = findViewById(R.id.conversation_icon);
        image.setImageDrawable(person);

        ImageView app = findViewById(R.id.conversation_icon_badge_icon);
        app.setImageDrawable(mIconFactory.getAppBadge(
                        mPackageName, UserHandle.getUserId(mSbn.getUid())));

        findViewById(R.id.conversation_icon_badge_ring).setVisibility(important ? VISIBLE : GONE);
    }

    private void bindPackage() {
        ApplicationInfo info;
        try {
            info = mPm.getApplicationInfo(
                    mPackageName,
                    PackageManager.MATCH_UNINSTALLED_PACKAGES
                            | PackageManager.MATCH_DISABLED_COMPONENTS
                            | PackageManager.MATCH_DIRECT_BOOT_UNAWARE
                            | PackageManager.MATCH_DIRECT_BOOT_AWARE);
            if (info != null) {
                mAppName = String.valueOf(mPm.getApplicationLabel(info));
            }
        } catch (PackageManager.NameNotFoundException e) {
        }
        ((TextView) findViewById(R.id.pkg_name)).setText(mAppName);
    }

    private void bindDelegate() {
        TextView delegateView = findViewById(R.id.delegate_name);

        if (!TextUtils.equals(mPackageName, mDelegatePkg)) {
            // this notification was posted by a delegate!
            delegateView.setVisibility(View.VISIBLE);
        } else {
            delegateView.setVisibility(View.GONE);
        }
    }

    private void bindGroup() {
        // Set group information if this channel has an associated group.
        CharSequence groupName = null;
        if (mNotificationChannel != null && mNotificationChannel.getGroup() != null) {
            try {
                final NotificationChannelGroup notificationChannelGroup =
                        mINotificationManager.getNotificationChannelGroupForPackage(
                                mNotificationChannel.getGroup(), mPackageName, mAppUid);
                if (notificationChannelGroup != null) {
                    groupName = notificationChannelGroup.getName();
                }
            } catch (RemoteException e) {
            }
        }
        TextView groupNameView = findViewById(R.id.group_name);
        if (groupName != null) {
            groupNameView.setText(groupName);
            groupNameView.setVisibility(VISIBLE);
        } else {
            groupNameView.setVisibility(GONE);
        }
    }

    @Override
    public boolean post(Runnable action) {
        if (mSkipPost) {
            action.run();
            return true;
        } else {
            return super.post(action);
        }
    }

    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();

        mDefaultDescriptionView = findViewById(R.id.default_summary);
        mSilentDescriptionView = findViewById(R.id.silence_summary);
    }

    @Override
    public void onFinishedClosing() { }

    @Override
    public boolean needsFalsingProtection() {
        return true;
    }

    @Override
    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
        super.onInitializeAccessibilityEvent(event);
        if (mGutsContainer != null &&
                event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED) {
            if (mGutsContainer.isExposed()) {
                event.getText().add(mContext.getString(
                        R.string.notification_channel_controls_opened_accessibility, mAppName));
            } else {
                event.getText().add(mContext.getString(
                        R.string.notification_channel_controls_closed_accessibility, mAppName));
            }
        }
    }

    private void updateToggleActions(int selectedAction, boolean userTriggered) {
        if (userTriggered) {
            TransitionSet transition = new TransitionSet();
            transition.setOrdering(TransitionSet.ORDERING_TOGETHER);
            transition.addTransition(new Fade(Fade.OUT))
                    .addTransition(new ChangeBounds())
                    .addTransition(
                            new Fade(Fade.IN)
                                    .setStartDelay(150)
                                    .setDuration(200)
                                    .setInterpolator(FAST_OUT_SLOW_IN));
            transition.setDuration(350);
            transition.setInterpolator(FAST_OUT_SLOW_IN);
            TransitionManager.beginDelayedTransition(this, transition);
        }

        View priority = findViewById(R.id.priority);
        View defaultBehavior = findViewById(R.id.default_behavior);
        View silence = findViewById(R.id.silence);

        switch (selectedAction) {
            case ACTION_FAVORITE:
                mPriorityDescriptionView.setVisibility(VISIBLE);
                mDefaultDescriptionView.setVisibility(GONE);
                mSilentDescriptionView.setVisibility(GONE);
                post(() -> {
                    priority.setSelected(true);
                    defaultBehavior.setSelected(false);
                    silence.setSelected(false);
                });
                break;

            case ACTION_MUTE:
                mSilentDescriptionView.setVisibility(VISIBLE);
                mDefaultDescriptionView.setVisibility(GONE);
                mPriorityDescriptionView.setVisibility(GONE);
                post(() -> {
                    priority.setSelected(false);
                    defaultBehavior.setSelected(false);
                    silence.setSelected(true);
                });
                break;

            case ACTION_DEFAULT:
                mDefaultDescriptionView.setVisibility(VISIBLE);
                mSilentDescriptionView.setVisibility(GONE);
                mPriorityDescriptionView.setVisibility(GONE);
                post(() -> {
                    priority.setSelected(false);
                    defaultBehavior.setSelected(true);
                    silence.setSelected(false);
                });
                break;

            default:
                throw new IllegalArgumentException("Unrecognized behavior: " + mSelectedAction);
        }

        boolean isAChange = getPriority() != selectedAction;
        TextView done = findViewById(R.id.done);
        done.setText(isAChange
                ? R.string.inline_ok_button
                : R.string.inline_done_button);

        // update icon in case importance has changed
        bindIcon(selectedAction == ACTION_FAVORITE);
    }

    int getSelectedAction() {
        return mSelectedAction;
    }

    private int getPriority() {
        if (mNotificationChannel.getImportance() <= IMPORTANCE_LOW
                && mNotificationChannel.getImportance() > IMPORTANCE_UNSPECIFIED) {
            return ACTION_MUTE;
        } else {
            if (mNotificationChannel.isImportantConversation()) {
                return ACTION_FAVORITE;
            }
        }
        return ACTION_DEFAULT;
    }

    private void updateChannel() {
        mBgHandler.post(
                new UpdateChannelRunnable(mINotificationManager, mPackageName,
                        mAppUid, mSelectedAction, mNotificationChannel));
        mEntry.markForUserTriggeredMovement(true);
        mMainHandler.postDelayed(
                () -> mOnUserInteractionCallback.onImportanceChanged(mEntry),
                StackStateAnimator.ANIMATION_DURATION_STANDARD);
    }

    private boolean willBypassDnd() {
        boolean bypassesDnd = false;
        try {
            int allowedSenders = mINotificationManager
                    .getConsolidatedNotificationPolicy().priorityConversationSenders;
            bypassesDnd =  allowedSenders == CONVERSATION_SENDERS_IMPORTANT
                    || allowedSenders == CONVERSATION_SENDERS_ANYONE;
        } catch (RemoteException e) {
            Log.e(TAG, "Could not check conversation senders", e);
        }
        return bypassesDnd;
    }

    private boolean willShowAsBubble() {
        return mBubbleMetadata != null
                && BubblesManager.areBubblesEnabled(mContext, mSbn.getUser());
    }

    @Override
    public void setGutsParent(NotificationGuts guts) {
        mGutsContainer = guts;
    }

    @Override
    public boolean willBeRemoved() {
        return false;
    }

    @Override
    public boolean shouldBeSavedOnClose() {
        return mPressedApply;
    }

    @Override
    public View getContentView() {
        return this;
    }

    @Override
    public boolean handleCloseControls(boolean save, boolean force) {
        if (save && mSelectedAction > -1) {
            updateChannel();
        }

        // Clear the selected importance when closing, so when when we open again,
        // we starts from a clean state.
        mSelectedAction = -1;
        mPressedApply = false;

        return false;
    }

    @Override
    public int getActualHeight() {
        // Because we're animating the bounds, getHeight will return the small height at the
        // beginning of the animation. Instead we'd want it to already return the end value
        return mActualHeight;
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        super.onLayout(changed, l, t, r, b);
        mActualHeight = getHeight();
    }

    @VisibleForTesting
    public boolean isAnimating() {
        return false;
    }

    class UpdateChannelRunnable implements Runnable {

        private final INotificationManager mINotificationManager;
        private final String mAppPkg;
        private final int mAppUid;
        private  NotificationChannel mChannelToUpdate;
        private final @Action int mAction;

        public UpdateChannelRunnable(INotificationManager notificationManager,
                String packageName, int appUid, @Action int action,
                @NonNull NotificationChannel channelToUpdate) {
            mINotificationManager = notificationManager;
            mAppPkg = packageName;
            mAppUid = appUid;
            mChannelToUpdate = channelToUpdate;
            mAction = action;
        }

        @Override
        public void run() {
            try {
                switch (mAction) {
                    case ACTION_FAVORITE:
                        mChannelToUpdate.setImportantConversation(true);
                        if (mChannelToUpdate.isImportantConversation()) {
                            mChannelToUpdate.setAllowBubbles(true);
                            if (mAppBubble == BUBBLE_PREFERENCE_NONE) {
                                mINotificationManager.setBubblesAllowed(mAppPkg, mAppUid,
                                        BUBBLE_PREFERENCE_SELECTED);
                            }
                            if (mBubblesManagerOptional.isPresent()) {
                                post(() -> mBubblesManagerOptional.get()
                                        .onUserSetImportantConversation(mEntry));
                            }
                        }
                        mChannelToUpdate.setImportance(Math.max(
                                mChannelToUpdate.getOriginalImportance(), IMPORTANCE_DEFAULT));
                        break;
                    case ACTION_DEFAULT:
                        mChannelToUpdate.setImportance(Math.max(
                                mChannelToUpdate.getOriginalImportance(), IMPORTANCE_DEFAULT));
                        if (mChannelToUpdate.isImportantConversation()) {
                            mChannelToUpdate.setImportantConversation(false);
                            mChannelToUpdate.setAllowBubbles(false);
                        }
                        break;
                    case ACTION_MUTE:
                        if (mChannelToUpdate.getImportance() == IMPORTANCE_UNSPECIFIED
                                || mChannelToUpdate.getImportance() >= IMPORTANCE_DEFAULT) {
                            mChannelToUpdate.setImportance(IMPORTANCE_LOW);
                        }
                        if (mChannelToUpdate.isImportantConversation()) {
                            mChannelToUpdate.setImportantConversation(false);
                            mChannelToUpdate.setAllowBubbles(false);
                        }
                        break;
                }

                mINotificationManager.updateNotificationChannelForPackage(
                            mAppPkg, mAppUid, mChannelToUpdate);
            } catch (RemoteException e) {
                Log.e(TAG, "Unable to update notification channel", e);
            }
        }
    }
}