package com.example.lab2;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.text.Editable;
import android.text.Layout;
import android.text.TextWatcher;
import android.util.Log;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.EditText;
import android.widget.ExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.LinearLayout;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;

public class MainActivity extends AppCompatActivity {

    ExpandableListView expandableListView;
    List<String> parents;
    Map<String, List<String>> children;
    ExpandableListAdapter listAdapter;
    String topText;
    Context context;
    int temp;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);


        final TextView childText = (TextView) findViewById(R.id.textChild);
        final EditText edittext = (EditText) findViewById(R.id.editText2);
        expandableListView = (ExpandableListView) findViewById(R.id.simpleExpandableListView);
        topText = "/";
        fillData();

        listAdapter = new MyExpandableListAdapter(this, parents, children);

        expandableListView.setAdapter(listAdapter);



        expandableListView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
            @Override
            public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {
                if(!parent.isGroupExpanded(groupPosition)){
                    parent.expandGroup(groupPosition);
                    edittext.setText("/" + parents.get(groupPosition));
                } else if(parent.isGroupExpanded(groupPosition)){
                    parent.collapseGroup(groupPosition);
                    edittext.setText("/");
                }
                return false;
            }
        });


        expandableListView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
            @Override
            public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {
                topText = ("/" + parents.get(groupPosition) + "/" + children.get(parents.get(groupPosition)).get(childPosition));
                edittext.setText(topText);


                return false;
            }
        });


        edittext.setOnKeyListener(new View.OnKeyListener() {
            @Override
            public boolean onKey(View v, int keyCode, KeyEvent event) {


                String abc = edittext.getText().toString();
                StringTokenizer st = new StringTokenizer(abc, "/");
                LinkedList<String> names = new LinkedList<>();
                int counter = 0;

                while (counter < 2 && st.hasMoreTokens()) {
                    names.add(st.nextToken());
                    counter++;
                }

                boolean con = true;

                for (int i = 0; con && i < parents.size(); i++) {
                    if (names.size() > 0 && parents.get(i).startsWith(names.get(0)) || names.size() == 0 && abc.equals("/")) {
                        con = false;

                        edittext.setBackgroundColor(Color.WHITE);
                        expandableListView.expandGroup(i);
                        boolean com = true;
                        for (int j = 0; com && j < 3; j++) {
                            if (names.size() > 1 && children.get(parents.get(i)).get(j).startsWith(names.get(1)) || names.size() == 1 && abc.equals(parents.get(i) + "/")) {

                                com = false;

                                expandableListView.getChildAt(temp).setBackgroundColor(Color.WHITE);
                                int index = expandableListView.getFlatListPosition(ExpandableListView.getPackedPositionForChild(i, j));
                                expandableListView.getChildAt(index).setBackgroundColor(Color.GRAY);
                                temp = index;
                            }

                        }
                        if (com && names.size() > 1) {
                            edittext.setBackgroundColor(Color.RED);
                        }
                    } else {
                        edittext.setBackgroundColor(Color.RED);

                    }

                }
                return false;
            }

        });

    }
    public void fillData() {

        parents = new ArrayList<>();
        children = new HashMap<>();

        parents.add("Brands");
        parents.add("Models");
        parents.add("Colors");

        List<String> Brands = new ArrayList<>();
        List<String> Models = new ArrayList<>();
        List<String> Colors = new ArrayList<>();

        Brands.add("Gucci");
        Brands.add("Prada");
        Brands.add("Tommy Hilfiger");


        Models.add("Round");
        Models.add("Squared");
        Models.add("Cat");

        Colors.add("Red");
        Colors.add("Black");
        Colors.add("Blue");

        children.put(parents.get(0), Brands);
        children.put(parents.get(1), Models);
        children.put(parents.get(2), Colors);

    }
}