package org.telegram.ui;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.content.Context;
import android.content.DialogInterface;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.VelocityTracker;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.animation.Interpolator;
import android.widget.EditText;
import android.widget.FrameLayout;
import android.widget.TextView;

import org.telegram.messenger.AndroidUtilities;
import org.telegram.messenger.ContactsController;
import org.telegram.messenger.LocaleController;
import org.telegram.messenger.MessagesController;
import org.telegram.messenger.R;
import org.telegram.tgnet.TLRPC;
import org.telegram.ui.ActionBar.ActionBar;
import org.telegram.ui.ActionBar.ActionBarMenu;
import org.telegram.ui.ActionBar.ActionBarMenuItem;
import org.telegram.ui.ActionBar.AlertDialog;
import org.telegram.ui.ActionBar.BaseFragment;
import org.telegram.ui.ActionBar.Theme;
import org.telegram.ui.ActionBar.ThemeDescription;
import org.telegram.ui.Components.AlertsCreator;
import org.telegram.ui.Components.LayoutHelper;
import org.telegram.ui.Components.RecyclerListView;
import org.telegram.ui.Components.ScrollSlidingTextTabStrip;

import java.util.ArrayList;
import java.util.Collections;

import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

public class DialogOrContactPickerActivity extends BaseFragment {

    private static class ViewPage extends FrameLayout {
        private BaseFragment parentFragment;
        private FrameLayout fragmentView;
        private ActionBar actionBar;
        private RecyclerListView listView;
        private RecyclerListView listView2;
        private View emptyView;
        private int selectedType;

        public ViewPage(Context context) {
            super(context);
        }
    }

    private DialogsActivity dialogsActivity;
    private ContactsActivity contactsActivity;
    private ActionBarMenuItem searchItem;

    private final static int search_button = 0;

    private Paint backgroundPaint = new Paint();
    private ScrollSlidingTextTabStrip scrollSlidingTextTabStrip;
    private ViewPage[] viewPages = new ViewPage[2];
    private AnimatorSet tabsAnimation;
    private boolean tabsAnimationInProgress;
    private boolean animatingForward;
    private boolean backAnimation;
    private int maximumVelocity;
    private static final Interpolator interpolator = t -> {
        --t;
        return t * t * t * t * t + 1.0F;
    };

    private boolean swipeBackEnabled = true;

    public DialogOrContactPickerActivity() {
        super();

        Bundle args = new Bundle();
        args.putBoolean("onlySelect", true);
        args.putBoolean("checkCanWrite", false);
        args.putBoolean("resetDelegate", false);
        args.putInt("dialogsType", 4);
        dialogsActivity = new DialogsActivity(args);
        dialogsActivity.setDelegate((fragment, dids, message, param) -> {
            if (dids.isEmpty()) {
                return;
            }
            long did = dids.get(0);
            int lowerId = (int) did;
            if (did <= 0) {
                return;
            }
            TLRPC.User user = getMessagesController().getUser(lowerId);
            showBlockAlert(user);
        });
        dialogsActivity.onFragmentCreate();

        args = new Bundle();
        args.putBoolean("onlyUsers", true);
        args.putBoolean("destroyAfterSelect", true);
        args.putBoolean("returnAsResult", true);
        args.putBoolean("disableSections", true);
        args.putBoolean("needFinishFragment", false);
        args.putBoolean("resetDelegate", false);
        args.putBoolean("allowSelf", false);
        contactsActivity = new ContactsActivity(args);
        contactsActivity.setDelegate((user, param, activity) -> showBlockAlert(user));
        contactsActivity.onFragmentCreate();
    }

    @Override
    public View createView(Context context) {
        actionBar.setBackButtonImage(R.drawable.ic_ab_back);
        actionBar.setTitle(LocaleController.getString("BlockUserMultiTitle", R.string.BlockUserMultiTitle));
        if (AndroidUtilities.isTablet()) {
            actionBar.setOccupyStatusBar(false);
        }
        actionBar.setExtraHeight(AndroidUtilities.dp(44));
        actionBar.setAllowOverlayTitle(false);
        actionBar.setAddToContainer(false);
        actionBar.setClipContent(true);
        actionBar.setActionBarMenuOnItemClick(new ActionBar.ActionBarMenuOnItemClick() {
            @Override
            public void onItemClick(int id) {
                if (id == -1) {
                    finishFragment();
                }
            }
        });
        hasOwnBackground = true;

        ActionBarMenu menu = actionBar.createMenu();
        searchItem = menu.addItem(search_button, R.drawable.ic_ab_search).setIsSearchField(true).setActionBarMenuItemSearchListener(new ActionBarMenuItem.ActionBarMenuItemSearchListener() {
            @Override
            public void onSearchExpand() {
                dialogsActivity.getActionBar().openSearchField("", false);
                contactsActivity.getActionBar().openSearchField("", false);
                searchItem.getSearchField().requestFocus();

            }

            @Override
            public void onSearchCollapse() {
                dialogsActivity.getActionBar().closeSearchField(false);
                contactsActivity.getActionBar().closeSearchField(false);
            }

            @Override
            public void onTextChanged(EditText editText) {
                dialogsActivity.getActionBar().setSearchFieldText(editText.getText().toString());
                contactsActivity.getActionBar().setSearchFieldText(editText.getText().toString());
            }
        });

        scrollSlidingTextTabStrip = new ScrollSlidingTextTabStrip(context);
        scrollSlidingTextTabStrip.setUseSameWidth(true);
        actionBar.addView(scrollSlidingTextTabStrip, LayoutHelper.createFrame(LayoutHelper.MATCH_PARENT, 44, Gravity.LEFT | Gravity.BOTTOM));
        scrollSlidingTextTabStrip.setDelegate(new ScrollSlidingTextTabStrip.ScrollSlidingTabStripDelegate() {
            @Override
            public void onPageSelected(int id, boolean forward) {
                if (viewPages[0].selectedType == id) {
                    return;
                }
                swipeBackEnabled = id == scrollSlidingTextTabStrip.getFirstTabId();
                viewPages[1].selectedType = id;
                viewPages[1].setVisibility(View.VISIBLE);
                switchToCurrentSelectedMode(true);
                animatingForward = forward;
            }

            @Override
            public void onPageScrolled(float progress) {
                if (progress == 1 && viewPages[1].getVisibility() != View.VISIBLE) {
                    return;
                }
                if (animatingForward) {
                    viewPages[0].setTranslationX(-progress * viewPages[0].getMeasuredWidth());
                    viewPages[1].setTranslationX(viewPages[0].getMeasuredWidth() - progress * viewPages[0].getMeasuredWidth());
                } else {
                    viewPages[0].setTranslationX(progress * viewPages[0].getMeasuredWidth());
                    viewPages[1].setTranslationX(progress * viewPages[0].getMeasuredWidth() - viewPages[0].getMeasuredWidth());
                }
                if (progress == 1) {
                    ViewPage tempPage = viewPages[0];
                    viewPages[0] = viewPages[1];
                    viewPages[1] = tempPage;
                    viewPages[1].setVisibility(View.GONE);
                }
            }
        });

        ViewConfiguration configuration = ViewConfiguration.get(context);
        maximumVelocity = configuration.getScaledMaximumFlingVelocity();

        FrameLayout frameLayout;
        fragmentView = frameLayout = new FrameLayout(context) {

            private int startedTrackingPointerId;
            private boolean startedTracking;
            private boolean maybeStartTracking;
            private int startedTrackingX;
            private int startedTrackingY;
            private VelocityTracker velocityTracker;
            private boolean globalIgnoreLayout;

            private boolean prepareForMoving(MotionEvent ev, boolean forward) {
                int id = scrollSlidingTextTabStrip.getNextPageId(forward);
                if (id < 0) {
                    return false;
                }
                getParent().requestDisallowInterceptTouchEvent(true);
                maybeStartTracking = false;
                startedTracking = true;
                startedTrackingX = (int) ev.getX();
                actionBar.setEnabled(false);
                scrollSlidingTextTabStrip.setEnabled(false);
                viewPages[1].selectedType = id;
                viewPages[1].setVisibility(View.VISIBLE);
                animatingForward = forward;
                switchToCurrentSelectedMode(true);
                if (forward) {
                    viewPages[1].setTranslationX(viewPages[0].getMeasuredWidth());
                } else {
                    viewPages[1].setTranslationX(-viewPages[0].getMeasuredWidth());
                }
                return true;
            }

            @Override
            public void forceHasOverlappingRendering(boolean hasOverlappingRendering) {
                super.forceHasOverlappingRendering(hasOverlappingRendering);
            }

            @Override
            protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
                int widthSize = MeasureSpec.getSize(widthMeasureSpec);
                int heightSize = MeasureSpec.getSize(heightMeasureSpec);

                setMeasuredDimension(widthSize, heightSize);

                measureChildWithMargins(actionBar, widthMeasureSpec, 0, heightMeasureSpec, 0);
                int actionBarHeight = actionBar.getMeasuredHeight();
                globalIgnoreLayout = true;
                for (int a = 0; a < viewPages.length; a++) {
                    if (viewPages[a] == null) {
                        continue;
                    }
                    if (viewPages[a].listView != null) {
                        viewPages[a].listView.setPadding(0, actionBarHeight, 0, 0);
                    }
                    if (viewPages[a].listView2 != null) {
                        viewPages[a].listView2.setPadding(0, actionBarHeight, 0, 0);
                    }
                    if (viewPages[a].emptyView != null) {
                        viewPages[a].emptyView.setPadding(0, actionBarHeight, 0, 0);
                    }
                }
                globalIgnoreLayout = false;

                int childCount = getChildCount();
                for (int i = 0; i < childCount; i++) {
                    View child = getChildAt(i);
                    if (child == null || child.getVisibility() == GONE || child == actionBar) {
                        continue;
                    }
                    measureChildWithMargins(child, widthMeasureSpec, 0, heightMeasureSpec, 0);
                }
            }

            @Override
            protected void dispatchDraw(Canvas canvas) {
                super.dispatchDraw(canvas);
                if (parentLayout != null) {
                    parentLayout.drawHeaderShadow(canvas, actionBar.getMeasuredHeight() + (int) actionBar.getTranslationY());
                }
            }

            @Override
            public void requestLayout() {
                if (globalIgnoreLayout) {
                    return;
                }
                super.requestLayout();
            }

            public boolean checkTabsAnimationInProgress() {
                if (tabsAnimationInProgress) {
                    boolean cancel = false;
                    if (backAnimation) {
                        if (Math.abs(viewPages[0].getTranslationX()) < 1) {
                            viewPages[0].setTranslationX(0);
                            viewPages[1].setTranslationX(viewPages[0].getMeasuredWidth() * (animatingForward ? 1 : -1));
                            cancel = true;
                        }
                    } else if (Math.abs(viewPages[1].getTranslationX()) < 1) {
                        viewPages[0].setTranslationX(viewPages[0].getMeasuredWidth() * (animatingForward ? -1 : 1));
                        viewPages[1].setTranslationX(0);
                        cancel = true;
                    }
                    if (cancel) {
                        if (tabsAnimation != null) {
                            tabsAnimation.cancel();
                            tabsAnimation = null;
                        }
                        tabsAnimationInProgress = false;
                    }
                    return tabsAnimationInProgress;
                }
                return false;
            }

            @Override
            public boolean onInterceptTouchEvent(MotionEvent ev) {
                return checkTabsAnimationInProgress() || scrollSlidingTextTabStrip.isAnimatingIndicator() || onTouchEvent(ev);
            }

            @Override
            protected void onDraw(Canvas canvas) {
                backgroundPaint.setColor(Theme.getColor(Theme.key_windowBackgroundWhite));
                canvas.drawRect(0, actionBar.getMeasuredHeight() + actionBar.getTranslationY(), getMeasuredWidth(), getMeasuredHeight(), backgroundPaint);
            }

            @Override
            public boolean onTouchEvent(MotionEvent ev) {
                if (!parentLayout.checkTransitionAnimation() && !checkTabsAnimationInProgress()) {
                    if (ev != null) {
                        if (velocityTracker == null) {
                            velocityTracker = VelocityTracker.obtain();
                        }
                        velocityTracker.addMovement(ev);
                    }
                    if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN && !startedTracking && !maybeStartTracking) {
                        startedTrackingPointerId = ev.getPointerId(0);
                        maybeStartTracking = true;
                        startedTrackingX = (int) ev.getX();
                        startedTrackingY = (int) ev.getY();
                        velocityTracker.clear();
                    } else if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && ev.getPointerId(0) == startedTrackingPointerId) {
                        int dx = (int) (ev.getX() - startedTrackingX);
                        int dy = Math.abs((int) ev.getY() - startedTrackingY);
                        if (startedTracking && (animatingForward && dx > 0 || !animatingForward && dx < 0)) {
                            if (!prepareForMoving(ev, dx < 0)) {
                                maybeStartTracking = true;
                                startedTracking = false;
                                viewPages[0].setTranslationX(0);
                                viewPages[1].setTranslationX(animatingForward ? viewPages[0].getMeasuredWidth() : -viewPages[0].getMeasuredWidth());
                                scrollSlidingTextTabStrip.selectTabWithId(viewPages[1].selectedType, 0);
                            }
                        }
                        if (maybeStartTracking && !startedTracking) {
                            float touchSlop = AndroidUtilities.getPixelsInCM(0.3f, true);
                            if (Math.abs(dx) >= touchSlop && Math.abs(dx) > dy) {
                                prepareForMoving(ev, dx < 0);
                            }
                        } else if (startedTracking) {
                            viewPages[0].setTranslationX(dx);
                            if (animatingForward) {
                                viewPages[1].setTranslationX(viewPages[0].getMeasuredWidth() + dx);
                            } else {
                                viewPages[1].setTranslationX(dx - viewPages[0].getMeasuredWidth());
                            }
                            float scrollProgress = Math.abs(dx) / (float) viewPages[0].getMeasuredWidth();
                            scrollSlidingTextTabStrip.selectTabWithId(viewPages[1].selectedType, scrollProgress);
                        }
                    } else if (ev == null || ev.getPointerId(0) == startedTrackingPointerId && (ev.getAction() == MotionEvent.ACTION_CANCEL || ev.getAction() == MotionEvent.ACTION_UP || ev.getAction() == MotionEvent.ACTION_POINTER_UP)) {
                        velocityTracker.computeCurrentVelocity(1000, maximumVelocity);
                        float velX;
                        float velY;
                        if (ev != null && ev.getAction() != MotionEvent.ACTION_CANCEL) {
                            velX = velocityTracker.getXVelocity();
                            velY = velocityTracker.getYVelocity();
                            if (!startedTracking) {
                                if (Math.abs(velX) >= 3000 && Math.abs(velX) > Math.abs(velY)) {
                                    prepareForMoving(ev, velX < 0);
                                }
                            }
                        } else {
                            velX = 0;
                            velY = 0;
                        }
                        if (startedTracking) {
                            float x = viewPages[0].getX();
                            tabsAnimation = new AnimatorSet();
                            backAnimation = Math.abs(x) < viewPages[0].getMeasuredWidth() / 3.0f && (Math.abs(velX) < 3500 || Math.abs(velX) < Math.abs(velY));
                            float distToMove;
                            float dx;
                            if (backAnimation) {
                                dx = Math.abs(x);
                                if (animatingForward) {
                                    tabsAnimation.playTogether(
                                            ObjectAnimator.ofFloat(viewPages[0], View.TRANSLATION_X, 0),
                                            ObjectAnimator.ofFloat(viewPages[1], View.TRANSLATION_X, viewPages[1].getMeasuredWidth())
                                    );
                                } else {
                                    tabsAnimation.playTogether(
                                            ObjectAnimator.ofFloat(viewPages[0], View.TRANSLATION_X, 0),
                                            ObjectAnimator.ofFloat(viewPages[1], View.TRANSLATION_X, -viewPages[1].getMeasuredWidth())
                                    );
                                }
                            } else {
                                dx = viewPages[0].getMeasuredWidth() - Math.abs(x);
                                if (animatingForward) {
                                    tabsAnimation.playTogether(
                                            ObjectAnimator.ofFloat(viewPages[0], View.TRANSLATION_X, -viewPages[0].getMeasuredWidth()),
                                            ObjectAnimator.ofFloat(viewPages[1], View.TRANSLATION_X, 0)
                                    );
                                } else {
                                    tabsAnimation.playTogether(
                                            ObjectAnimator.ofFloat(viewPages[0], View.TRANSLATION_X, viewPages[0].getMeasuredWidth()),
                                            ObjectAnimator.ofFloat(viewPages[1], View.TRANSLATION_X, 0)
                                    );
                                }
                            }
                            tabsAnimation.setInterpolator(interpolator);

                            int width = getMeasuredWidth();
                            int halfWidth = width / 2;
                            float distanceRatio = Math.min(1.0f, 1.0f * dx / (float) width);
                            float distance = (float) halfWidth + (float) halfWidth * AndroidUtilities.distanceInfluenceForSnapDuration(distanceRatio);
                            velX = Math.abs(velX);
                            int duration;
                            if (velX > 0) {
                                duration = 4 * Math.round(1000.0f * Math.abs(distance / velX));
                            } else {
                                float pageDelta = dx / getMeasuredWidth();
                                duration = (int) ((pageDelta + 1.0f) * 100.0f);
                            }
                            duration = Math.max(150, Math.min(duration, 600));

                            tabsAnimation.setDuration(duration);
                            tabsAnimation.addListener(new AnimatorListenerAdapter() {
                                @Override
                                public void onAnimationEnd(Animator animator) {
                                    tabsAnimation = null;
                                    if (backAnimation) {
                                        viewPages[1].setVisibility(View.GONE);
                                    } else {
                                        ViewPage tempPage = viewPages[0];
                                        viewPages[0] = viewPages[1];
                                        viewPages[1] = tempPage;
                                        viewPages[1].setVisibility(View.GONE);
                                        swipeBackEnabled = viewPages[0].selectedType == scrollSlidingTextTabStrip.getFirstTabId();
                                        scrollSlidingTextTabStrip.selectTabWithId(viewPages[0].selectedType, 1.0f);
                                    }
                                    tabsAnimationInProgress = false;
                                    maybeStartTracking = false;
                                    startedTracking = false;
                                    actionBar.setEnabled(true);
                                    scrollSlidingTextTabStrip.setEnabled(true);
                                }
                            });
                            tabsAnimation.start();
                            tabsAnimationInProgress = true;
                            startedTracking = false;
                        } else {
                            maybeStartTracking = false;
                            actionBar.setEnabled(true);
                            scrollSlidingTextTabStrip.setEnabled(true);
                        }
                        if (velocityTracker != null) {
                            velocityTracker.recycle();
                            velocityTracker = null;
                        }
                    }
                    return startedTracking;
                }
                return false;
            }
        };
        frameLayout.setWillNotDraw(false);

        dialogsActivity.setParentFragment(this);
        contactsActivity.setParentFragment(this);


        for (int a = 0; a < viewPages.length; a++) {
            viewPages[a] = new ViewPage(context) {
                @Override
                public void setTranslationX(float translationX) {
                    super.setTranslationX(translationX);
                    if (tabsAnimationInProgress) {
                        if (viewPages[0] == this) {
                            float scrollProgress = Math.abs(viewPages[0].getTranslationX()) / (float) viewPages[0].getMeasuredWidth();
                            scrollSlidingTextTabStrip.selectTabWithId(viewPages[1].selectedType, scrollProgress);
                        }
                    }
                }
            };
            frameLayout.addView(viewPages[a], LayoutHelper.createFrame(LayoutHelper.MATCH_PARENT, LayoutHelper.MATCH_PARENT));
            if (a == 0) {
                viewPages[a].parentFragment = dialogsActivity;
                viewPages[a].listView = dialogsActivity.getListView();
                viewPages[a].listView2 = dialogsActivity.getSearchListView();
                viewPages[a].emptyView = dialogsActivity.getEmptyView();
            } else if (a == 1) {
                viewPages[a].parentFragment = contactsActivity;
                viewPages[a].listView = contactsActivity.getListView();
                viewPages[a].setVisibility(View.GONE);
            }
            viewPages[a].listView.setScrollingTouchSlop(RecyclerView.TOUCH_SLOP_PAGING);
            viewPages[a].fragmentView = (FrameLayout) viewPages[a].parentFragment.getFragmentView();
            viewPages[a].actionBar = viewPages[a].parentFragment.getActionBar();
            viewPages[a].addView(viewPages[a].fragmentView, LayoutHelper.createFrame(LayoutHelper.MATCH_PARENT, LayoutHelper.MATCH_PARENT));
            viewPages[a].addView(viewPages[a].actionBar, LayoutHelper.createFrame(LayoutHelper.MATCH_PARENT, LayoutHelper.WRAP_CONTENT));
            viewPages[a].actionBar.setVisibility(View.GONE);

            for (int i = 0; i < 2; i++) {
                RecyclerListView listView = i == 0 ? viewPages[a].listView : viewPages[a].listView2;
                if (listView == null) {
                    continue;
                }
                listView.setClipToPadding(false);
                RecyclerView.OnScrollListener onScrollListener = listView.getOnScrollListener();
                listView.setOnScrollListener(new RecyclerView.OnScrollListener() {
                    @Override
                    public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
                        onScrollListener.onScrollStateChanged(recyclerView, newState);
                        if (newState != RecyclerView.SCROLL_STATE_DRAGGING) {
                            int scrollY = (int) -actionBar.getTranslationY();
                            int actionBarHeight = ActionBar.getCurrentActionBarHeight();
                            if (scrollY != 0 && scrollY != actionBarHeight) {
                                if (scrollY < actionBarHeight / 2) {
                                    viewPages[0].listView.smoothScrollBy(0, -scrollY);
                                    if (viewPages[0].listView2 != null) {
                                        viewPages[0].listView2.smoothScrollBy(0, -scrollY);
                                    }
                                } else {
                                    viewPages[0].listView.smoothScrollBy(0, actionBarHeight - scrollY);
                                    if (viewPages[0].listView2 != null) {
                                        viewPages[0].listView2.smoothScrollBy(0, actionBarHeight - scrollY);
                                    }
                                }
                            }
                        }
                    }

                    @Override
                    public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                        onScrollListener.onScrolled(recyclerView, dx, dy);
                        if (recyclerView == viewPages[0].listView || recyclerView == viewPages[0].listView2) {
                            float currentTranslation = actionBar.getTranslationY();
                            float newTranslation = currentTranslation - dy;
                            if (newTranslation < -ActionBar.getCurrentActionBarHeight()) {
                                newTranslation = -ActionBar.getCurrentActionBarHeight();
                            } else if (newTranslation > 0) {
                                newTranslation = 0;
                            }
                            if (newTranslation != currentTranslation) {
                                setScrollY(newTranslation);
                            }
                        }
                    }
                });
            }
        }

        frameLayout.addView(actionBar, LayoutHelper.createFrame(LayoutHelper.MATCH_PARENT, LayoutHelper.WRAP_CONTENT));

        updateTabs();
        switchToCurrentSelectedMode(false);
        swipeBackEnabled = scrollSlidingTextTabStrip.getCurrentTabId() == scrollSlidingTextTabStrip.getFirstTabId();

        return fragmentView;
    }

    @Override
    public void onResume() {
        super.onResume();
        if (dialogsActivity != null) {
            dialogsActivity.onResume();
        }
        if (contactsActivity != null) {
            contactsActivity.onResume();
        }
    }

    @Override
    public void onPause() {
        super.onPause();
        if (dialogsActivity != null) {
            dialogsActivity.onPause();
        }
        if (contactsActivity != null) {
            contactsActivity.onPause();
        }
    }

    @Override
    public boolean isSwipeBackEnabled(MotionEvent event) {
        return swipeBackEnabled;
    }

    @Override
    public void onFragmentDestroy() {
        if (dialogsActivity != null) {
            dialogsActivity.onFragmentDestroy();
        }
        if (contactsActivity != null) {
            contactsActivity.onFragmentDestroy();
        }
        super.onFragmentDestroy();
    }

    private void setScrollY(float value) {
        actionBar.setTranslationY(value);
        for (int a = 0; a < viewPages.length; a++) {
            viewPages[a].listView.setPinnedSectionOffsetY((int) value);
            if (viewPages[a].listView2 != null) {
                viewPages[a].listView2.setPinnedSectionOffsetY((int) value);
            }
        }
        fragmentView.invalidate();
    }

    private void showBlockAlert(TLRPC.User user) {
        if (user == null) {
            return;
        }
        AlertDialog.Builder builder = new AlertDialog.Builder(getParentActivity());
        builder.setTitle(LocaleController.getString("BlockUser", R.string.BlockUser));
        builder.setMessage(AndroidUtilities.replaceTags(LocaleController.formatString("AreYouSureBlockContact2", R.string.AreYouSureBlockContact2, ContactsController.formatName(user.first_name, user.last_name))));
        builder.setPositiveButton(LocaleController.getString("BlockContact", R.string.BlockContact), (dialogInterface, i) -> {
            if (MessagesController.isSupportUser(user)) {
                AlertsCreator.showSimpleToast(DialogOrContactPickerActivity.this, LocaleController.getString("ErrorOccurred", R.string.ErrorOccurred));
            } else {
                MessagesController.getInstance(currentAccount).blockUser(user.id);
                AlertsCreator.showSimpleToast(DialogOrContactPickerActivity.this, LocaleController.getString("UserBlocked", R.string.UserBlocked));
            }
            finishFragment();
        });
        builder.setNegativeButton(LocaleController.getString("Cancel", R.string.Cancel), null);
        AlertDialog dialog = builder.create();
        showDialog(dialog);
        TextView button = (TextView) dialog.getButton(DialogInterface.BUTTON_POSITIVE);
        if (button != null) {
            button.setTextColor(Theme.getColor(Theme.key_dialogTextRed2));
        }
    }

    private void updateTabs() {
        if (scrollSlidingTextTabStrip == null) {
            return;
        }
        scrollSlidingTextTabStrip.addTextTab(0, LocaleController.getString("BlockUserChatsTitle", R.string.BlockUserChatsTitle));
        scrollSlidingTextTabStrip.addTextTab(1, LocaleController.getString("BlockUserContactsTitle", R.string.BlockUserContactsTitle));
        scrollSlidingTextTabStrip.setVisibility(View.VISIBLE);
        actionBar.setExtraHeight(AndroidUtilities.dp(44));
        int id = scrollSlidingTextTabStrip.getCurrentTabId();
        if (id >= 0) {
            viewPages[0].selectedType = id;
        }
        scrollSlidingTextTabStrip.finishAddingTabs();
    }

    private void switchToCurrentSelectedMode(boolean animated) {
        for (int a = 0; a < viewPages.length; a++) {
            viewPages[a].listView.stopScroll();
            if (viewPages[a].listView2 != null) {
                viewPages[a].listView2.stopScroll();
            }
        }
        int a = animated ? 1 : 0;
        for (int i = 0; i < 2; i++) {
            RecyclerListView listView = i == 0 ? viewPages[a].listView : viewPages[a].listView2;
            if (listView == null) {
                continue;
            }
            RecyclerView.Adapter currentAdapter = listView.getAdapter();
            listView.setPinnedHeaderShadowDrawable(null);
            if (actionBar.getTranslationY() != 0) {
                LinearLayoutManager layoutManager = (LinearLayoutManager) listView.getLayoutManager();
                layoutManager.scrollToPositionWithOffset(0, (int) actionBar.getTranslationY());
            }
        }
    }

    @Override
    public ThemeDescription[] getThemeDescriptions() {
        ArrayList<ThemeDescription> arrayList = new ArrayList<>();

        arrayList.add(new ThemeDescription(fragmentView, 0, null, null, null, null, Theme.key_windowBackgroundWhite));
        arrayList.add(new ThemeDescription(actionBar, ThemeDescription.FLAG_BACKGROUND, null, null, null, null, Theme.key_actionBarDefault));
        arrayList.add(new ThemeDescription(actionBar, ThemeDescription.FLAG_AB_ITEMSCOLOR, null, null, null, null, Theme.key_actionBarDefaultIcon));
        arrayList.add(new ThemeDescription(actionBar, ThemeDescription.FLAG_AB_TITLECOLOR, null, null, null, null, Theme.key_actionBarDefaultTitle));
        arrayList.add(new ThemeDescription(actionBar, ThemeDescription.FLAG_AB_SELECTORCOLOR, null, null, null, null, Theme.key_actionBarDefaultSelector));

        arrayList.add(new ThemeDescription(scrollSlidingTextTabStrip.getTabsContainer(), ThemeDescription.FLAG_TEXTCOLOR | ThemeDescription.FLAG_CHECKTAG, new Class[]{TextView.class}, null, null, null, Theme.key_actionBarTabActiveText));
        arrayList.add(new ThemeDescription(scrollSlidingTextTabStrip.getTabsContainer(), ThemeDescription.FLAG_TEXTCOLOR | ThemeDescription.FLAG_CHECKTAG, new Class[]{TextView.class}, null, null, null, Theme.key_actionBarTabUnactiveText));
        arrayList.add(new ThemeDescription(scrollSlidingTextTabStrip.getTabsContainer(), ThemeDescription.FLAG_BACKGROUNDFILTER | ThemeDescription.FLAG_DRAWABLESELECTEDSTATE, new Class[]{TextView.class}, null, null, null, Theme.key_actionBarTabLine));
        arrayList.add(new ThemeDescription(null, 0, null, null, new Drawable[]{scrollSlidingTextTabStrip.getSelectorDrawable()}, null, Theme.key_actionBarTabSelector));

        Collections.addAll(arrayList, dialogsActivity.getThemeDescriptions());
        Collections.addAll(arrayList, contactsActivity.getThemeDescriptions());

        return arrayList.toArray(new ThemeDescription[0]);
    }
}