/*
 * Copyright (C) 2011 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.dialer.calllog;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.res.Resources;
import android.database.Cursor;
import android.net.Uri;
import android.provider.ContactsContract;
import android.provider.ContactsContract.CommonDataKinds.Phone;
import android.support.v7.widget.RecyclerView;
import android.os.Bundle;
import android.os.Trace;
import android.preference.PreferenceActivity;
import android.preference.PreferenceManager;
import android.provider.CallLog;
import android.support.v7.widget.RecyclerView.ViewHolder;
import android.telecom.PhoneAccountHandle;
import android.telephony.PhoneNumberUtils;
import android.telephony.TelephonyManager;
import android.text.TextUtils;
import android.util.Log;
import android.view.ContextMenu;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.MenuItem.OnMenuItemClickListener;
import android.view.View;
import android.view.View.AccessibilityDelegate;
import android.view.ViewGroup;
import android.view.ViewTreeObserver;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.accessibility.AccessibilityEvent;

import com.android.contacts.common.CallUtil;
import com.android.contacts.common.ClipboardUtils;
import com.android.contacts.common.util.PermissionsUtil;
import com.android.dialer.DialtactsActivity;
import com.android.dialer.PhoneCallDetails;
import com.android.dialer.R;
import com.android.dialer.contactinfo.ContactInfoCache;
import com.android.dialer.contactinfo.ContactInfoCache.OnContactInfoChangedListener;
import com.android.dialer.util.DialerUtils;
import com.android.dialer.util.PhoneNumberUtil;
import com.android.dialer.voicemail.VoicemailPlaybackPresenter;

import com.google.common.annotations.VisibleForTesting;

import java.util.HashMap;

/**
 * Adapter class to fill in data for the Call Log.
 */
public class CallLogAdapter extends GroupingListAdapter
        implements CallLogGroupBuilder.GroupCreator,
                VoicemailPlaybackPresenter.OnVoicemailDeletedListener {

    /** Interface used to initiate a refresh of the content. */
    public interface CallFetcher {
        public void fetchCalls();
    }

    private static final int VIEW_TYPE_SHOW_CALL_HISTORY_LIST_ITEM = 10;
    private static final int NO_EXPANDED_LIST_ITEM = -1;

    private static final int VOICEMAIL_PROMO_CARD_POSITION = 0;
    /**
     * View type for voicemail promo card.  Note: Numbering starts at 20 to avoid collision
     * with {@link com.android.common.widget.GroupingListAdapter#ITEM_TYPE_IN_GROUP}, and
     * {@link CallLogAdapter#VIEW_TYPE_SHOW_CALL_HISTORY_LIST_ITEM}.
     */
    private static final int VIEW_TYPE_VOICEMAIL_PROMO_CARD = 20;

    /**
     * The key for the show voicemail promo card preference which will determine whether the promo
     * card was permanently dismissed or not.
     */
    private static final String SHOW_VOICEMAIL_PROMO_CARD = "show_voicemail_promo_card";
    private static final boolean SHOW_VOICEMAIL_PROMO_CARD_DEFAULT = true;

    protected final Context mContext;
    private final ContactInfoHelper mContactInfoHelper;
    private final VoicemailPlaybackPresenter mVoicemailPlaybackPresenter;
    private final CallFetcher mCallFetcher;

    protected ContactInfoCache mContactInfoCache;

    private boolean mIsShowingRecentsTab;

    private static final String KEY_EXPANDED_POSITION = "expanded_position";
    private static final String KEY_EXPANDED_ROW_ID = "expanded_row_id";

    // Tracks the position of the currently expanded list item.
    private int mCurrentlyExpandedPosition = RecyclerView.NO_POSITION;
    // Tracks the rowId of the currently expanded list item, so the position can be updated if there
    // are any changes to the call log entries, such as additions or removals.
    private long mCurrentlyExpandedRowId = NO_EXPANDED_LIST_ITEM;

    /**
     *  Hashmap, keyed by call Id, used to track the day group for a call.  As call log entries are
     *  put into the primary call groups in {@link com.android.dialer.calllog.CallLogGroupBuilder},
     *  they are also assigned a secondary "day group".  This hashmap tracks the day group assigned
     *  to all calls in the call log.  This information is used to trigger the display of a day
     *  group header above the call log entry at the start of a day group.
     *  Note: Multiple calls are grouped into a single primary "call group" in the call log, and
     *  the cursor used to bind rows includes all of these calls.  When determining if a day group
     *  change has occurred it is necessary to look at the last entry in the call log to determine
     *  its day group.  This hashmap provides a means of determining the previous day group without
     *  having to reverse the cursor to the start of the previous day call log entry.
     */
    private HashMap<Long,Integer> mDayGroups = new HashMap<Long, Integer>();

    private boolean mLoading = true;

    private SharedPreferences mPrefs;

    private boolean mShowPromoCard = false;

    /** Instance of helper class for managing views. */
    private final CallLogListItemHelper mCallLogListItemHelper;

    /** Cache for repeated requests to TelecomManager. */
    protected final TelecomCallLogCache mTelecomCallLogCache;

    /** Helper to group call log entries. */
    private final CallLogGroupBuilder mCallLogGroupBuilder;

    /**
     * The OnClickListener used to expand or collapse the action buttons of a call log entry.
     */
    private final View.OnClickListener mExpandCollapseListener = new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            CallLogListItemViewHolder viewHolder = (CallLogListItemViewHolder) v.getTag();
            if (viewHolder == null) {
                return;
            }

            if (mVoicemailPlaybackPresenter != null) {
                // Always reset the voicemail playback state on expand or collapse.
                mVoicemailPlaybackPresenter.resetAll();
            }

            if (viewHolder.getAdapterPosition() == mCurrentlyExpandedPosition) {
                // Hide actions, if the clicked item is the expanded item.
                viewHolder.showActions(false);

                mCurrentlyExpandedPosition = RecyclerView.NO_POSITION;
                mCurrentlyExpandedRowId = NO_EXPANDED_LIST_ITEM;
            } else {
                expandViewHolderActions(viewHolder);
            }

        }
    };

    /**
     * Click handler used to dismiss the promo card when the user taps the "ok" button.
     */
    private final View.OnClickListener mOkActionListener = new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            dismissVoicemailPromoCard();
        }
    };

    /**
     * Click handler used to send the user to the voicemail settings screen and then dismiss the
     * promo card.
     */
    private final View.OnClickListener mVoicemailSettingsActionListener =
            new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent intent = new Intent(TelephonyManager.ACTION_CONFIGURE_VOICEMAIL);
            mContext.startActivity(intent);
            dismissVoicemailPromoCard();
        }
    };

    /**
     * Listener that is triggered to populate the context menu with actions to perform on the call's
     * number, when the call log entry is long pressed.
     */
    private final View.OnCreateContextMenuListener mOnCreateContextMenuListener =
            new View.OnCreateContextMenuListener() {
                @Override
                public void onCreateContextMenu(ContextMenu menu, View v,
                        ContextMenuInfo menuInfo) {
                    final CallLogListItemViewHolder vh =
                            (CallLogListItemViewHolder) v.getTag();
                    if (TextUtils.isEmpty(vh.number)) {
                        return;
                    }

                    menu.setHeaderTitle(vh.number);

                    final MenuItem copyItem = menu.add(
                            ContextMenu.NONE,
                            R.id.context_menu_copy_to_clipboard,
                            ContextMenu.NONE,
                            R.string.copy_text);

                    copyItem.setOnMenuItemClickListener(new OnMenuItemClickListener() {
                        @Override
                        public boolean onMenuItemClick(MenuItem item) {
                            ClipboardUtils.copyText(CallLogAdapter.this.mContext, null,
                                    vh.number, true);
                            return true;
                        }
                    });

                    // The edit number before call does not show up if any of the conditions apply:
                    // 1) Number cannot be called
                    // 2) Number is the voicemail number
                    // 3) Number is a SIP address

                    if (!PhoneNumberUtil.canPlaceCallsTo(vh.number, vh.numberPresentation)
                            || mTelecomCallLogCache.isVoicemailNumber(vh.accountHandle, vh.number)
                            || PhoneNumberUtil.isSipNumber(vh.number)) {
                        return;
                    }

                    final MenuItem editItem = menu.add(
                            ContextMenu.NONE,
                            R.id.context_menu_edit_before_call,
                            ContextMenu.NONE,
                            R.string.recentCalls_editNumberBeforeCall);

                    editItem.setOnMenuItemClickListener(new OnMenuItemClickListener() {
                        @Override
                        public boolean onMenuItemClick(MenuItem item) {
                            final Intent intent = new Intent(Intent.ACTION_DIAL,
                                    CallUtil.getCallUri(vh.number));
                            intent.setClass(mContext, DialtactsActivity.class);
                            DialerUtils.startActivityWithErrorToast(mContext, intent);
                            return true;
                        }
                    });
                }
            };

    private void expandViewHolderActions(CallLogListItemViewHolder viewHolder) {
        // If another item is expanded, notify it that it has changed. Its actions will be
        // hidden when it is re-binded because we change mCurrentlyExpandedPosition below.
        if (mCurrentlyExpandedPosition != RecyclerView.NO_POSITION) {
            notifyItemChanged(mCurrentlyExpandedPosition);
        }
        // Show the actions for the clicked list item.
        viewHolder.showActions(true);
        mCurrentlyExpandedPosition = viewHolder.getAdapterPosition();
        mCurrentlyExpandedRowId = viewHolder.rowId;
    }

    /**
     * Expand the actions on a list item when focused in Talkback mode, to aid discoverability.
     */
    private AccessibilityDelegate mAccessibilityDelegate = new AccessibilityDelegate() {
        @Override
        public boolean onRequestSendAccessibilityEvent(
                ViewGroup host, View child, AccessibilityEvent event) {
            if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED) {
                // Only expand if actions are not already expanded, because triggering the expand
                // function on clicks causes the action views to lose the focus indicator.
                CallLogListItemViewHolder viewHolder = (CallLogListItemViewHolder) host.getTag();
                if (mCurrentlyExpandedPosition != viewHolder.getAdapterPosition()) {
                    expandViewHolderActions((CallLogListItemViewHolder) host.getTag());
                }
            }
            return super.onRequestSendAccessibilityEvent(host, child, event);
        }
    };

    protected final OnContactInfoChangedListener mOnContactInfoChangedListener =
            new OnContactInfoChangedListener() {
                @Override
                public void onContactInfoChanged() {
                    notifyDataSetChanged();
                }
            };

    public CallLogAdapter(
            Context context,
            CallFetcher callFetcher,
            ContactInfoHelper contactInfoHelper,
            VoicemailPlaybackPresenter voicemailPlaybackPresenter,
            boolean isShowingRecentsTab) {
        super(context);

        mContext = context;
        mCallFetcher = callFetcher;
        mContactInfoHelper = contactInfoHelper;
        mVoicemailPlaybackPresenter = voicemailPlaybackPresenter;
        if (mVoicemailPlaybackPresenter != null) {
            mVoicemailPlaybackPresenter.setOnVoicemailDeletedListener(this);
        }
        mIsShowingRecentsTab = isShowingRecentsTab;

        mContactInfoCache = new ContactInfoCache(
                mContactInfoHelper, mOnContactInfoChangedListener);
        if (!PermissionsUtil.hasContactsPermissions(context)) {
            mContactInfoCache.disableRequestProcessing();
        }

        Resources resources = mContext.getResources();
        CallTypeHelper callTypeHelper = new CallTypeHelper(resources);

        mTelecomCallLogCache = new TelecomCallLogCache(mContext);
        PhoneCallDetailsHelper phoneCallDetailsHelper =
                new PhoneCallDetailsHelper(mContext, resources, mTelecomCallLogCache);
        mCallLogListItemHelper =
                new CallLogListItemHelper(phoneCallDetailsHelper, resources, mTelecomCallLogCache);
        mCallLogGroupBuilder = new CallLogGroupBuilder(this);
        mPrefs = PreferenceManager.getDefaultSharedPreferences(context);
        maybeShowVoicemailPromoCard();
    }

    public void onSaveInstanceState(Bundle outState) {
        outState.putInt(KEY_EXPANDED_POSITION, mCurrentlyExpandedPosition);
        outState.putLong(KEY_EXPANDED_ROW_ID, mCurrentlyExpandedRowId);
    }

    public void onRestoreInstanceState(Bundle savedInstanceState) {
        if (savedInstanceState != null) {
            mCurrentlyExpandedPosition =
                    savedInstanceState.getInt(KEY_EXPANDED_POSITION, RecyclerView.NO_POSITION);
            mCurrentlyExpandedRowId =
                    savedInstanceState.getLong(KEY_EXPANDED_ROW_ID, NO_EXPANDED_LIST_ITEM);
        }
    }

    /**
     * Requery on background thread when {@link Cursor} changes.
     */
    @Override
    protected void onContentChanged() {
        mCallFetcher.fetchCalls();
    }

    public void setLoading(boolean loading) {
        mLoading = loading;
    }

    public boolean isEmpty() {
        if (mLoading) {
            // We don't want the empty state to show when loading.
            return false;
        } else {
            return getItemCount() == 0;
        }
    }

    public void invalidateCache() {
        mContactInfoCache.invalidate();
    }

    public void startCache() {
        if (PermissionsUtil.hasPermission(mContext, android.Manifest.permission.READ_CONTACTS)) {
            mContactInfoCache.start();
        }
    }

    public void pauseCache() {
        mContactInfoCache.stop();
        mTelecomCallLogCache.reset();
    }

    @Override
    protected void addGroups(Cursor cursor) {
        mCallLogGroupBuilder.addGroups(cursor);
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        if (viewType == VIEW_TYPE_SHOW_CALL_HISTORY_LIST_ITEM) {
            return ShowCallHistoryViewHolder.create(mContext, parent);
        } else if (viewType == VIEW_TYPE_VOICEMAIL_PROMO_CARD) {
            return createVoicemailPromoCardViewHolder(parent);
        }
        return createCallLogEntryViewHolder(parent);
    }

    /**
     * Creates a new call log entry {@link ViewHolder}.
     *
     * @param parent the parent view.
     * @return The {@link ViewHolder}.
     */
    private ViewHolder createCallLogEntryViewHolder(ViewGroup parent) {
        LayoutInflater inflater = LayoutInflater.from(mContext);
        View view = inflater.inflate(R.layout.call_log_list_item, parent, false);
        CallLogListItemViewHolder viewHolder = CallLogListItemViewHolder.create(
                view,
                mContext,
                mExpandCollapseListener,
                mTelecomCallLogCache,
                mCallLogListItemHelper,
                mVoicemailPlaybackPresenter);

        viewHolder.callLogEntryView.setTag(viewHolder);
        viewHolder.callLogEntryView.setAccessibilityDelegate(mAccessibilityDelegate);

        viewHolder.primaryActionView.setOnCreateContextMenuListener(mOnCreateContextMenuListener);
        viewHolder.primaryActionView.setTag(viewHolder);

        return viewHolder;
    }

    /**
     * Binds the views in the entry to the data in the call log.
     * TODO: This gets called 20-30 times when Dialer starts up for a single call log entry and
     * should not. It invokes cross-process methods and the repeat execution can get costly.
     *
     * @param ViewHolder The view corresponding to this entry.
     * @param position The position of the entry.
     */
    public void onBindViewHolder(ViewHolder viewHolder, int position) {
        Trace.beginSection("onBindViewHolder: " + position);

        switch (getItemViewType(position)) {
            case VIEW_TYPE_SHOW_CALL_HISTORY_LIST_ITEM:
                break;
            case VIEW_TYPE_VOICEMAIL_PROMO_CARD:
                bindVoicemailPromoCardViewHolder(viewHolder);
                break;
            default:
                bindCallLogListViewHolder(viewHolder, position);
                break;
        }

        Trace.endSection();
    }

    /**
     * Binds the promo card view holder.
     *
     * @param viewHolder The promo card view holder.
     */
    protected void bindVoicemailPromoCardViewHolder(ViewHolder viewHolder) {
        PromoCardViewHolder promoCardViewHolder = (PromoCardViewHolder) viewHolder;

        promoCardViewHolder.getSettingsTextView().setOnClickListener(
                mVoicemailSettingsActionListener);
        promoCardViewHolder.getOkTextView().setOnClickListener(mOkActionListener);
    }

    /**
     * Binds the view holder for the call log list item view.
     *
     * @param viewHolder The call log list item view holder.
     * @param position The position of the list item.
     */

    private void bindCallLogListViewHolder(ViewHolder viewHolder, int position) {
        Cursor c = (Cursor) getItem(position);
        if (c == null) {
            return;
        }

        int count = getGroupSize(position);

        final String number = c.getString(CallLogQuery.NUMBER);
        final int numberPresentation = c.getInt(CallLogQuery.NUMBER_PRESENTATION);
        final PhoneAccountHandle accountHandle = PhoneAccountUtils.getAccount(
                c.getString(CallLogQuery.ACCOUNT_COMPONENT_NAME),
                c.getString(CallLogQuery.ACCOUNT_ID));
        final String countryIso = c.getString(CallLogQuery.COUNTRY_ISO);
        final ContactInfo cachedContactInfo = mContactInfoHelper.getContactInfo(c);
        final boolean isVoicemailNumber =
                mTelecomCallLogCache.isVoicemailNumber(accountHandle, number);

        // Note: Binding of the action buttons is done as required in configureActionViews when the
        // user expands the actions ViewStub.

        ContactInfo info = ContactInfo.EMPTY;
        if (PhoneNumberUtil.canPlaceCallsTo(number, numberPresentation) && !isVoicemailNumber) {
            // Lookup contacts with this number
            info = mContactInfoCache.getValue(number, countryIso, cachedContactInfo);
        }
        CharSequence formattedNumber = info.formattedNumber == null
                ? null : PhoneNumberUtils.createTtsSpannable(info.formattedNumber);

        final PhoneCallDetails details = new PhoneCallDetails(
                mContext, number, numberPresentation, formattedNumber, isVoicemailNumber);
        details.accountHandle = accountHandle;
        details.callTypes = getCallTypes(c, count);
        details.countryIso = countryIso;
        details.date = c.getLong(CallLogQuery.DATE);
        details.duration = c.getLong(CallLogQuery.DURATION);
        details.features = getCallFeatures(c, count);
        details.geocode = c.getString(CallLogQuery.GEOCODED_LOCATION);
        details.transcription = c.getString(CallLogQuery.TRANSCRIPTION);
        if (details.callTypes[0] == CallLog.Calls.VOICEMAIL_TYPE) {
            details.isRead = c.getInt(CallLogQuery.IS_READ) == 1;
        }

        if (!c.isNull(CallLogQuery.DATA_USAGE)) {
            details.dataUsage = c.getLong(CallLogQuery.DATA_USAGE);
        }

        if (!TextUtils.isEmpty(info.name)) {
            details.contactUri = info.lookupUri;
            details.name = info.name;
            details.numberType = info.type;
            details.numberLabel = info.label;
            details.photoUri = info.photoUri;
            details.sourceType = info.sourceType;
            details.objectId = info.objectId;
        }

        CallLogListItemViewHolder views = (CallLogListItemViewHolder) viewHolder;
        views.info = info;
        views.rowId = c.getLong(CallLogQuery.ID);
        // Store values used when the actions ViewStub is inflated on expansion.
        views.number = number;
        views.displayNumber = details.displayNumber;
        views.numberPresentation = numberPresentation;
        views.callType = c.getInt(CallLogQuery.CALL_TYPE);
        views.accountHandle = accountHandle;
        views.voicemailUri = c.getString(CallLogQuery.VOICEMAIL_URI);
        // Stash away the Ids of the calls so that we can support deleting a row in the call log.
        views.callIds = getCallIds(c, count);
        views.isBusiness = mContactInfoHelper.isBusiness(info.sourceType);
        views.numberType = (String) Phone.getTypeLabel(mContext.getResources(), details.numberType,
                details.numberLabel);
        // Default case: an item in the call log.
        views.primaryActionView.setVisibility(View.VISIBLE);

        // Check if the day group has changed and display a header if necessary.
        int currentGroup = getDayGroupForCall(views.rowId);
        int previousGroup = getPreviousDayGroup(c);
        if (currentGroup != previousGroup) {
            views.dayGroupHeader.setVisibility(View.VISIBLE);
            views.dayGroupHeader.setText(getGroupDescription(currentGroup));
        } else {
            views.dayGroupHeader.setVisibility(View.GONE);
        }

        mCallLogListItemHelper.setPhoneCallDetails(views, details);

        if (mCurrentlyExpandedRowId == views.rowId) {
            // In case ViewHolders were added/removed, update the expanded position if the rowIds
            // match so that we can restore the correct expanded state on rebind.
            mCurrentlyExpandedPosition = position;
        }

        views.showActions(mCurrentlyExpandedPosition == position);

        String nameForDefaultImage = null;
        if (TextUtils.isEmpty(info.name)) {
            nameForDefaultImage = details.displayNumber;
        } else {
            nameForDefaultImage = info.name;
        }
        views.setPhoto(info.photoId, info.photoUri, info.lookupUri, nameForDefaultImage,
                isVoicemailNumber, views.isBusiness);

        mCallLogListItemHelper.setPhoneCallDetails(views, details);
    }

    @Override
    public int getItemCount() {
        return super.getItemCount() + ((isShowingRecentsTab() || mShowPromoCard) ? 1 : 0);
    }

    @Override
    public int getItemViewType(int position) {
        if (position == getItemCount() - 1 && isShowingRecentsTab()) {
            return VIEW_TYPE_SHOW_CALL_HISTORY_LIST_ITEM;
        } else if (position == VOICEMAIL_PROMO_CARD_POSITION && mShowPromoCard) {
            return VIEW_TYPE_VOICEMAIL_PROMO_CARD;
        }
        return super.getItemViewType(position);
    }

    /**
     * Retrieves an item at the specified position, taking into account the presence of a promo
     * card.
     *
     * @param position The position to retrieve.
     * @return The item at that position.
     */
    @Override
    public Object getItem(int position) {
        return super.getItem(position - (mShowPromoCard ? 1 : 0));
    }

    protected boolean isShowingRecentsTab() {
        return mIsShowingRecentsTab;
    }

    @Override
    public void onVoicemailDeleted(Uri uri) {
        mCurrentlyExpandedRowId = NO_EXPANDED_LIST_ITEM;
        mCurrentlyExpandedPosition = RecyclerView.NO_POSITION;
    }

    /**
     * Retrieves the day group of the previous call in the call log.  Used to determine if the day
     * group has changed and to trigger display of the day group text.
     *
     * @param cursor The call log cursor.
     * @return The previous day group, or DAY_GROUP_NONE if this is the first call.
     */
    private int getPreviousDayGroup(Cursor cursor) {
        // We want to restore the position in the cursor at the end.
        int startingPosition = cursor.getPosition();
        int dayGroup = CallLogGroupBuilder.DAY_GROUP_NONE;
        if (cursor.moveToPrevious()) {
            long previousRowId = cursor.getLong(CallLogQuery.ID);
            dayGroup = getDayGroupForCall(previousRowId);
        }
        cursor.moveToPosition(startingPosition);
        return dayGroup;
    }

    /**
     * Given a call Id, look up the day group that the call belongs to.  The day group data is
     * populated in {@link com.android.dialer.calllog.CallLogGroupBuilder}.
     *
     * @param callId The call to retrieve the day group for.
     * @return The day group for the call.
     */
    private int getDayGroupForCall(long callId) {
        if (mDayGroups.containsKey(callId)) {
            return mDayGroups.get(callId);
        }
        return CallLogGroupBuilder.DAY_GROUP_NONE;
    }

    /**
     * Returns the call types for the given number of items in the cursor.
     * <p>
     * It uses the next {@code count} rows in the cursor to extract the types.
     * <p>
     * It position in the cursor is unchanged by this function.
     */
    private int[] getCallTypes(Cursor cursor, int count) {
        int position = cursor.getPosition();
        int[] callTypes = new int[count];
        for (int index = 0; index < count; ++index) {
            callTypes[index] = cursor.getInt(CallLogQuery.CALL_TYPE);
            cursor.moveToNext();
        }
        cursor.moveToPosition(position);
        return callTypes;
    }

    /**
     * Determine the features which were enabled for any of the calls that make up a call log
     * entry.
     *
     * @param cursor The cursor.
     * @param count The number of calls for the current call log entry.
     * @return The features.
     */
    private int getCallFeatures(Cursor cursor, int count) {
        int features = 0;
        int position = cursor.getPosition();
        for (int index = 0; index < count; ++index) {
            features |= cursor.getInt(CallLogQuery.FEATURES);
            cursor.moveToNext();
        }
        cursor.moveToPosition(position);
        return features;
    }

    /**
     * Sets whether processing of requests for contact details should be enabled.
     *
     * This method should be called in tests to disable such processing of requests when not
     * needed.
     */
    @VisibleForTesting
    void disableRequestProcessingForTest() {
        // TODO: Remove this and test the cache directly.
        mContactInfoCache.disableRequestProcessing();
    }

    @VisibleForTesting
    void injectContactInfoForTest(String number, String countryIso, ContactInfo contactInfo) {
        // TODO: Remove this and test the cache directly.
        mContactInfoCache.injectContactInfoForTest(number, countryIso, contactInfo);
    }

    @Override
    public void addGroup(int cursorPosition, int size, boolean expanded) {
        super.addGroup(cursorPosition, size, expanded);
    }

    /**
     * Stores the day group associated with a call in the call log.
     *
     * @param rowId The row Id of the current call.
     * @param dayGroup The day group the call belongs in.
     */
    @Override
    public void setDayGroup(long rowId, int dayGroup) {
        if (!mDayGroups.containsKey(rowId)) {
            mDayGroups.put(rowId, dayGroup);
        }
    }

    /**
     * Clears the day group associations on re-bind of the call log.
     */
    @Override
    public void clearDayGroups() {
        mDayGroups.clear();
    }

    /**
     * Retrieves the call Ids represented by the current call log row.
     *
     * @param cursor Call log cursor to retrieve call Ids from.
     * @param groupSize Number of calls associated with the current call log row.
     * @return Array of call Ids.
     */
    private long[] getCallIds(final Cursor cursor, final int groupSize) {
        // We want to restore the position in the cursor at the end.
        int startingPosition = cursor.getPosition();
        long[] ids = new long[groupSize];
        // Copy the ids of the rows in the group.
        for (int index = 0; index < groupSize; ++index) {
            ids[index] = cursor.getLong(CallLogQuery.ID);
            cursor.moveToNext();
        }
        cursor.moveToPosition(startingPosition);
        return ids;
    }

    /**
     * Determines the description for a day group.
     *
     * @param group The day group to retrieve the description for.
     * @return The day group description.
     */
    private CharSequence getGroupDescription(int group) {
       if (group == CallLogGroupBuilder.DAY_GROUP_TODAY) {
           return mContext.getResources().getString(R.string.call_log_header_today);
       } else if (group == CallLogGroupBuilder.DAY_GROUP_YESTERDAY) {
           return mContext.getResources().getString(R.string.call_log_header_yesterday);
       } else {
           return mContext.getResources().getString(R.string.call_log_header_other);
       }
    }

    /**
     * Determines if the voicemail promo card should be shown or not.  The voicemail promo card will
     * be shown as the first item in the voicemail tab.
     */
    private void maybeShowVoicemailPromoCard() {
        boolean showPromoCard = mPrefs.getBoolean(SHOW_VOICEMAIL_PROMO_CARD,
                SHOW_VOICEMAIL_PROMO_CARD_DEFAULT);
        mShowPromoCard = (mVoicemailPlaybackPresenter != null) && showPromoCard;
    }

    /**
     * Dismisses the voicemail promo card and refreshes the call log.
     */
    private void dismissVoicemailPromoCard() {
        mPrefs.edit().putBoolean(SHOW_VOICEMAIL_PROMO_CARD, false).apply();
        mShowPromoCard = false;
        notifyItemRemoved(VOICEMAIL_PROMO_CARD_POSITION);
    }

    /**
     * Creates the view holder for the voicemail promo card.
     *
     * @param parent The parent view.
     * @return The {@link ViewHolder}.
     */
    protected ViewHolder createVoicemailPromoCardViewHolder(ViewGroup parent) {
        LayoutInflater inflater = LayoutInflater.from(mContext);
        View view = inflater.inflate(R.layout.voicemail_promo_card, parent, false);

        PromoCardViewHolder viewHolder = PromoCardViewHolder.create(view);
        return viewHolder;
    }
}