/*
 * This is the source code of Telegram for Android v. 3.x.x.
 * It is licensed under GNU GPL v. 2 or later.
 * You should have received a copy of the license in this archive (see LICENSE).
 *
 * Copyright Nikolai Kudashov, 2013-2017.
 */

package org.telegram.ui;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;

import org.telegram.PhoneFormat.PhoneFormat;
import org.telegram.messenger.LocaleController;
import org.telegram.messenger.support.widget.LinearLayoutManager;
import org.telegram.messenger.support.widget.RecyclerView;
import org.telegram.tgnet.TLRPC;
import org.telegram.messenger.MessagesController;
import org.telegram.messenger.NotificationCenter;
import org.telegram.messenger.R;
import org.telegram.ui.ActionBar.AlertDialog;
import org.telegram.ui.ActionBar.Theme;
import org.telegram.ui.ActionBar.ThemeDescription;
import org.telegram.ui.Cells.TextInfoCell;
import org.telegram.ui.Cells.UserCell;
import org.telegram.ui.ActionBar.ActionBar;
import org.telegram.ui.ActionBar.ActionBarMenu;
import org.telegram.ui.ActionBar.BaseFragment;
import org.telegram.ui.Components.EmptyTextProgressView;
import org.telegram.ui.Components.LayoutHelper;
import org.telegram.ui.Components.RecyclerListView;

public class BlockedUsersActivity extends BaseFragment implements NotificationCenter.NotificationCenterDelegate, ContactsActivity.ContactsActivityDelegate {

    private RecyclerListView listView;
    private ListAdapter listViewAdapter;
    private EmptyTextProgressView emptyView;
    private int selectedUserId;

    private final static int block_user = 1;

    @Override
    public boolean onFragmentCreate() {
        super.onFragmentCreate();
        NotificationCenter.getInstance(currentAccount).addObserver(this, NotificationCenter.updateInterfaces);
        NotificationCenter.getInstance(currentAccount).addObserver(this, NotificationCenter.blockedUsersDidLoaded);
        MessagesController.getInstance(currentAccount).getBlockedUsers(false);
        return true;
    }

    @Override
    public void onFragmentDestroy() {
        super.onFragmentDestroy();
        NotificationCenter.getInstance(currentAccount).removeObserver(this, NotificationCenter.updateInterfaces);
        NotificationCenter.getInstance(currentAccount).removeObserver(this, NotificationCenter.blockedUsersDidLoaded);
    }

    @Override
    public View createView(Context context) {
        actionBar.setBackButtonImage(R.drawable.ic_ab_back);
        actionBar.setAllowOverlayTitle(true);
        actionBar.setTitle(LocaleController.getString("BlockedUsers", R.string.BlockedUsers));
        actionBar.setActionBarMenuOnItemClick(new ActionBar.ActionBarMenuOnItemClick() {
            @Override
            public void onItemClick(int id) {
                if (id == -1) {
                    finishFragment();
                } else if (id == block_user) {
                    Bundle args = new Bundle();
                    args.putBoolean("onlyUsers", true);
                    args.putBoolean("destroyAfterSelect", true);
                    args.putBoolean("returnAsResult", true);
                    ContactsActivity fragment = new ContactsActivity(args);
                    fragment.setDelegate(BlockedUsersActivity.this);
                    presentFragment(fragment);
                }
            }
        });

        ActionBarMenu menu = actionBar.createMenu();
        menu.addItem(block_user, R.drawable.plus);

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

        emptyView = new EmptyTextProgressView(context);
        emptyView.setText(LocaleController.getString("NoBlocked", R.string.NoBlocked));
        frameLayout.addView(emptyView, LayoutHelper.createFrame(LayoutHelper.MATCH_PARENT, LayoutHelper.MATCH_PARENT));

        listView = new RecyclerListView(context);
        listView.setEmptyView(emptyView);
        listView.setLayoutManager(new LinearLayoutManager(context, LinearLayoutManager.VERTICAL, false));
        listView.setVerticalScrollBarEnabled(false);
        listView.setAdapter(listViewAdapter = new ListAdapter(context));
        listView.setVerticalScrollbarPosition(LocaleController.isRTL ? RecyclerListView.SCROLLBAR_POSITION_LEFT : RecyclerListView.SCROLLBAR_POSITION_RIGHT);
        frameLayout.addView(listView, LayoutHelper.createFrame(LayoutHelper.MATCH_PARENT, LayoutHelper.MATCH_PARENT));

        listView.setOnItemClickListener((view, position) -> {
            if (position >= MessagesController.getInstance(currentAccount).blockedUsers.size()) {
                return;
            }
            Bundle args = new Bundle();
            args.putInt("user_id", MessagesController.getInstance(currentAccount).blockedUsers.get(position));
            presentFragment(new ProfileActivity(args));
        });

        listView.setOnItemLongClickListener((view, position) -> {
            if (position >= MessagesController.getInstance(currentAccount).blockedUsers.size() || getParentActivity() == null) {
                return true;
            }
            selectedUserId = MessagesController.getInstance(currentAccount).blockedUsers.get(position);

            AlertDialog.Builder builder = new AlertDialog.Builder(getParentActivity());
            CharSequence[] items = new CharSequence[]{LocaleController.getString("Unblock", R.string.Unblock)};
            builder.setItems(items, (dialogInterface, i) -> {
                if (i == 0) {
                    MessagesController.getInstance(currentAccount).unblockUser(selectedUserId);
                }
            });
            showDialog(builder.create());

            return true;
        });

        if (MessagesController.getInstance(currentAccount).loadingBlockedUsers) {
            emptyView.showProgress();
        } else {
            emptyView.showTextView();
        }
        return fragmentView;
    }

    @Override
    public void didReceivedNotification(int id, int account, Object... args) {
        if (id == NotificationCenter.updateInterfaces) {
            int mask = (Integer) args[0];
            if ((mask & MessagesController.UPDATE_MASK_AVATAR) != 0 || (mask & MessagesController.UPDATE_MASK_NAME) != 0) {
                updateVisibleRows(mask);
            }
        } else if (id == NotificationCenter.blockedUsersDidLoaded) {
            emptyView.showTextView();
            if (listViewAdapter != null) {
                listViewAdapter.notifyDataSetChanged();
            }
        }
    }

    private void updateVisibleRows(int mask) {
        if (listView == null) {
            return;
        }
        int count = listView.getChildCount();
        for (int a = 0; a < count; a++) {
            View child = listView.getChildAt(a);
            if (child instanceof UserCell) {
                ((UserCell) child).update(mask);
            }
        }
    }

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

    @Override
    public void didSelectContact(final TLRPC.User user, String param, ContactsActivity activity) {
        if (user == null) {
            return;
        }
        MessagesController.getInstance(currentAccount).blockUser(user.id);
    }

    private class ListAdapter extends RecyclerListView.SelectionAdapter {

        private Context mContext;

        public ListAdapter(Context context) {
            mContext = context;
        }

        @Override
        public int getItemCount() {
            if (MessagesController.getInstance(currentAccount).blockedUsers.size() == 0) {
                return 0;
            }
            return MessagesController.getInstance(currentAccount).blockedUsers.size() + 1;
        }

        @Override
        public boolean isEnabled(RecyclerView.ViewHolder holder) {
            return holder.getItemViewType() == 0;
        }

        @Override
        public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            View view;
            switch (viewType) {
                case 0:
                    view = new UserCell(mContext, 1, 0, false);
                    break;
                case 1:
                default:
                    view = new TextInfoCell(mContext);
                    ((TextInfoCell) view).setText(LocaleController.getString("UnblockText", R.string.UnblockText));
                    break;
            }
            return new RecyclerListView.Holder(view);
        }

        @Override
        public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
            if (holder.getItemViewType() == 0) {
                TLRPC.User user = MessagesController.getInstance(currentAccount).getUser(MessagesController.getInstance(currentAccount).blockedUsers.get(position));
                if (user != null) {
                    String number;
                    if (user.bot) {
                        number = LocaleController.getString("Bot", R.string.Bot).substring(0, 1).toUpperCase() + LocaleController.getString("Bot", R.string.Bot).substring(1);
                    } else if (user.phone != null && user.phone.length() != 0) {
                        number = PhoneFormat.getInstance().format("+" + user.phone);
                    } else {
                        number = LocaleController.getString("NumberUnknown", R.string.NumberUnknown);
                    }
                    ((UserCell) holder.itemView).setData(user, null, number, 0);
                }
            }
        }

        @Override
        public int getItemViewType(int i) {
            if (i == MessagesController.getInstance(currentAccount).blockedUsers.size()) {
                return 1;
            }
            return 0;
        }
    }

    @Override
    public ThemeDescription[] getThemeDescriptions() {
        ThemeDescription.ThemeDescriptionDelegate cellDelegate = () -> {
            if (listView != null) {
                int count = listView.getChildCount();
                for (int a = 0; a < count; a++) {
                    View child = listView.getChildAt(a);
                    if (child instanceof UserCell) {
                        ((UserCell) child).update(0);
                    }
                }
            }
        };

        return new ThemeDescription[]{
                new ThemeDescription(fragmentView, ThemeDescription.FLAG_BACKGROUND, null, null, null, null, Theme.key_windowBackgroundWhite),

                new ThemeDescription(actionBar, ThemeDescription.FLAG_BACKGROUND, null, null, null, null, Theme.key_actionBarDefault),
                new ThemeDescription(listView, ThemeDescription.FLAG_LISTGLOWCOLOR, null, null, null, null, Theme.key_actionBarDefault),
                new ThemeDescription(actionBar, ThemeDescription.FLAG_AB_ITEMSCOLOR, null, null, null, null, Theme.key_actionBarDefaultIcon),
                new ThemeDescription(actionBar, ThemeDescription.FLAG_AB_TITLECOLOR, null, null, null, null, Theme.key_actionBarDefaultTitle),
                new ThemeDescription(actionBar, ThemeDescription.FLAG_AB_SELECTORCOLOR, null, null, null, null, Theme.key_actionBarDefaultSelector),

                new ThemeDescription(listView, ThemeDescription.FLAG_SELECTOR, null, null, null, null, Theme.key_listSelector),

                new ThemeDescription(emptyView, ThemeDescription.FLAG_TEXTCOLOR, null, null, null, null, Theme.key_emptyListPlaceholder),
                new ThemeDescription(emptyView, ThemeDescription.FLAG_PROGRESSBAR, null, null, null, null, Theme.key_progressCircle),

                new ThemeDescription(listView, 0, new Class[]{TextInfoCell.class}, new String[]{"textView"}, null, null, null, Theme.key_windowBackgroundWhiteGrayText5),
                new ThemeDescription(listView, 0, new Class[]{UserCell.class}, new String[]{"nameTextView"}, null, null, null, Theme.key_windowBackgroundWhiteBlackText),
                new ThemeDescription(listView, 0, new Class[]{UserCell.class}, new String[]{"statusColor"}, null, null, cellDelegate, Theme.key_windowBackgroundWhiteGrayText),

                new ThemeDescription(listView, 0, new Class[]{UserCell.class}, null, new Drawable[]{Theme.avatar_photoDrawable, Theme.avatar_broadcastDrawable, Theme.avatar_savedDrawable}, null, Theme.key_avatar_text),
                new ThemeDescription(null, 0, null, null, null, cellDelegate, Theme.key_avatar_backgroundRed),
                new ThemeDescription(null, 0, null, null, null, cellDelegate, Theme.key_avatar_backgroundOrange),
                new ThemeDescription(null, 0, null, null, null, cellDelegate, Theme.key_avatar_backgroundViolet),
                new ThemeDescription(null, 0, null, null, null, cellDelegate, Theme.key_avatar_backgroundGreen),
                new ThemeDescription(null, 0, null, null, null, cellDelegate, Theme.key_avatar_backgroundCyan),
                new ThemeDescription(null, 0, null, null, null, cellDelegate, Theme.key_avatar_backgroundBlue),
                new ThemeDescription(null, 0, null, null, null, cellDelegate, Theme.key_avatar_backgroundPink),
        };
    }
}
