// ChineseHoroscope app
// Source code file: MainActivity.java

package it372.smiths.chinesehoroscope;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;
import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

    // Create instance variables for objects needed
    // in both the onCreate and showAnimal methods.
    private Spinner spinner1;
    ArrayList<String> animals;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        spinner1 = findViewById(R.id.spinner1);

        // Set up array list.
        ArrayList<Integer> arrList = new ArrayList<Integer>( );
        for(int n = 1920; n <= 2020; n++) {
            arrList.add(n);
        }

        // Set up array adapter.
        ArrayAdapter<Integer> adapter = new ArrayAdapter<Integer>(
                this,
                android.R.layout.simple_list_item_1,
                arrList);
        spinner1.setAdapter(adapter);


        // Set up arraylist to hold Chinese Zodiac animals.
        animals = new ArrayList<>( );
        String[ ] animalsArray = {"Monkey", "Rooster", "Dog", "Pig",
                "Rat", "Ox", "Tiger", "Rabbit", "Dragon", "Snake",
                "Horse", "Goat"};
        for(String a : animalsArray) {
            animals.add(a);
        }
    }

    // showAnimal onClick event handler.
    public void showAnimal(View view) {
        int year = (int) spinner1.getSelectedItem( );
        
        // Get index of animal in animals arraylist.
        int index = year % 12;
        
        // Get animal arraylist.
        String animal = animals.get(index);
        
        // Display animal in textview.
        TextView txtAnimal = findViewById(R.id.txt_animal);
        txtAnimal.setText(animal);
    }
}