/*
 * This is the source code of Telegram for Android v. 2.0.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, 2013-2016.
 */

package org.telegram.ui;

import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.os.Build;
import android.os.Bundle;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.FrameLayout;
import android.widget.ListView;
import android.widget.TextView;

import org.telegram.PhoneFormat.PhoneFormat;
import org.telegram.messenger.AndroidUtilities;
import org.telegram.messenger.ApplicationLoader;
import org.telegram.messenger.LocaleController;
import org.telegram.messenger.MessagesController;
import org.telegram.messenger.NotificationCenter;
import org.telegram.igram3.R;
import org.telegram.tgnet.TLRPC;
import org.telegram.ui.ActionBar.ActionBar;
import org.telegram.ui.ActionBar.ActionBarMenu;
import org.telegram.ui.ActionBar.BaseFragment;
import org.telegram.ui.Adapters.BaseFragmentAdapter;
import org.telegram.ui.Cells.TextInfoCell;
import org.telegram.ui.Cells.UserCell;
import org.telegram.ui.Components.LayoutHelper;

import java.util.ArrayList;

public class PrivacyUsersActivity extends BaseFragment implements NotificationCenter.NotificationCenterDelegate {

    public interface PrivacyActivityDelegate {
        void didUpdatedUserList(ArrayList<Integer> ids, boolean added);
    }

    private ListView listView;
    private ListAdapter listViewAdapter;
    private int selectedUserId;

    private boolean isGroup;

    private ArrayList<Integer> uidArray;
    private boolean isAlwaysShare;

    private PrivacyActivityDelegate delegate;

    private final static int block_user = 1;

    public PrivacyUsersActivity(ArrayList<Integer> users, boolean group, boolean always) {
        super();
        uidArray = users;
        isAlwaysShare = always;
        isGroup = group;
    }

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

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

    @Override
    public View createView(Context context) {
        actionBar.setBackButtonImage(R.drawable.ic_ab_back);
        actionBar.setAllowOverlayTitle(true);
        if (isGroup) {
            if (isAlwaysShare) {
                actionBar.setTitle(LocaleController.getString("AlwaysAllow", R.string.AlwaysAllow));
            } else {
                actionBar.setTitle(LocaleController.getString("NeverAllow", R.string.NeverAllow));
            }
        } else {
            if (isAlwaysShare) {
                actionBar.setTitle(LocaleController.getString("AlwaysShareWithTitle", R.string.AlwaysShareWithTitle));
            } else {
                actionBar.setTitle(LocaleController.getString("NeverShareWithTitle", R.string.NeverShareWithTitle));
            }
        }

        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(isAlwaysShare ? "isAlwaysShare" : "isNeverShare", true);
                    args.putBoolean("isGroup", isGroup);
                    GroupCreateActivity fragment = new GroupCreateActivity(args);
                    fragment.setDelegate(new GroupCreateActivity.GroupCreateActivityDelegate() {
                        @Override
                        public void didSelectUsers(ArrayList<Integer> ids) {
                            for (Integer id : ids) {
                                if (uidArray.contains(id)) {
                                    continue;
                                }
                                uidArray.add(id);
                            }
                            listViewAdapter.notifyDataSetChanged();
                            if (delegate != null) {
                                delegate.didUpdatedUserList(uidArray, true);
                            }
                        }
                    });
                    presentFragment(fragment);
                }
            }
        });

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

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

        TextView emptyTextView = new TextView(context);
        emptyTextView.setTextColor(0xff808080);
        emptyTextView.setTextSize(20);
        emptyTextView.setGravity(Gravity.CENTER);
        emptyTextView.setVisibility(View.INVISIBLE);
        emptyTextView.setText(LocaleController.getString("NoContacts", R.string.NoContacts));
        frameLayout.addView(emptyTextView);
        FrameLayout.LayoutParams layoutParams = (FrameLayout.LayoutParams) emptyTextView.getLayoutParams();
        layoutParams.width = LayoutHelper.MATCH_PARENT;
        layoutParams.height = LayoutHelper.MATCH_PARENT;
        layoutParams.gravity = Gravity.TOP;
        emptyTextView.setLayoutParams(layoutParams);
        emptyTextView.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                return true;
            }
        });

        listView = new ListView(context);
        listView.setEmptyView(emptyTextView);
        listView.setVerticalScrollBarEnabled(false);
        listView.setDivider(null);
        listView.setDividerHeight(0);
        listView.setAdapter(listViewAdapter = new ListAdapter(context));
        if (Build.VERSION.SDK_INT >= 11) {
            listView.setVerticalScrollbarPosition(LocaleController.isRTL ? ListView.SCROLLBAR_POSITION_LEFT : ListView.SCROLLBAR_POSITION_RIGHT);
        }
        frameLayout.addView(listView);
        layoutParams = (FrameLayout.LayoutParams) listView.getLayoutParams();
        layoutParams.width = LayoutHelper.MATCH_PARENT;
        layoutParams.height = LayoutHelper.MATCH_PARENT;
        listView.setLayoutParams(layoutParams);

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                if (i < uidArray.size()) {
                    Bundle args = new Bundle();
                    args.putInt("user_id", uidArray.get(i));
                    presentFragment(new ProfileActivity(args));
                }
            }
        });

        listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> adapterView, View view, int i, long l) {
                if (i < 0 || i >= uidArray.size() || getParentActivity() == null) {
                    return true;
                }
                selectedUserId = uidArray.get(i);

                AlertDialog.Builder builder = new AlertDialog.Builder(getParentActivity());
                CharSequence[] items = new CharSequence[]{LocaleController.getString("Delete", R.string.Delete)};
                builder.setItems(items, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int i) {
                        if (i == 0) {
                            uidArray.remove((Integer) selectedUserId);
                            listViewAdapter.notifyDataSetChanged();
                            if (delegate != null) {
                                delegate.didUpdatedUserList(uidArray, false);
                            }
                        }
                    }
                });
                showDialog(builder.create());
                return true;
            }
        });

        return fragmentView;
    }

    @Override
    public void didReceivedNotification(int id, 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);
            }
        }
    }

    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);
            }
        }
    }

    public void setDelegate(PrivacyActivityDelegate privacyActivityDelegate) {
        delegate = privacyActivityDelegate;
    }

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

    private class ListAdapter extends BaseFragmentAdapter {
        private Context mContext;

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

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

        @Override
        public boolean isEnabled(int i) {
            return i != uidArray.size();
        }

        @Override
        public int getCount() {
            if (uidArray.isEmpty()) {
                return 0;
            }
            return uidArray.size() + 1;
        }

        @Override
        public Object getItem(int i) {
            return null;
        }

        @Override
        public long getItemId(int i) {
            return i;
        }

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

        @Override
        public View getView(int i, View view, ViewGroup viewGroup) {
            int type = getItemViewType(i);
            SharedPreferences themePrefs = ApplicationLoader.applicationContext.getSharedPreferences(AndroidUtilities.THEME_PREFS, AndroidUtilities.THEME_PREFS_MODE);
            if (type == 0) {
                if (view == null) {
                    view = new UserCell(mContext, 1, 0, false);
                }
                TLRPC.User user = MessagesController.getInstance().getUser(uidArray.get(i));
                ((UserCell)view).setData(user, null, user.phone != null && user.phone.length() != 0 ? PhoneFormat.getInstance().format("+" + user.phone) : LocaleController.getString("NumberUnknown", R.string.NumberUnknown), 0);
            } else if (type == 1) {
                if (view == null) {
                    view = new TextInfoCell(mContext);
                    ((TextInfoCell) view).setText(LocaleController.getString("RemoveFromListText", R.string.RemoveFromListText));
                    view.setBackgroundColor(themePrefs.getInt("prefBGColor", 0xffffffff));
                }
            }
            return view;
        }

        @Override
        public int getItemViewType(int i) {
            if(i == uidArray.size()) {
                return 1;
            }
            return 0;
        }

        @Override
        public int getViewTypeCount() {
            return 2;
        }

        @Override
        public boolean isEmpty() {
            return uidArray.isEmpty();
        }
    }
}
