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package com.example.weighttracker;

import androidx.appcompat.app.AppCompatActivity;

import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.Toast;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;

public class MainActivity extends AppCompatActivity {

    private EditText weightEditText;
    private Button addButton;
    private ListView weightListView;
    private SQLiteDatabase database;
    private SimpleCursorAdapter adapter;

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

        weightEditText = findViewById(R.id.weightEditText);
        addButton = findViewById(R.id.addButton);
        weightListView = findViewById(R.id.weightListView);

        // Veritabanı oluşturma ve açma
        database = openOrCreateDatabase("WeightDB", MODE_PRIVATE, null);
        database.execSQL("CREATE TABLE IF NOT EXISTS weights (_id INTEGER PRIMARY KEY AUTOINCREMENT, weight REAL NOT NULL, date TEXT NOT NULL)");

        // Kaydedilen ağırlıkları tarih sırasına göre listeleme
        Cursor cursor = database.rawQuery("SELECT * FROM weights WHERE active = 1 ORDER BY date DESC", null);
        String[] columns = {"weight", "date"};
        int[] views = {R.id.weightTextView, R.id.dateTextView};
        adapter = new SimpleCursorAdapter(this, R.layout.weight_item, cursor, columns, views, 0);
        weightListView.setAdapter(adapter);

        addButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // Kilo verisini al
                String weightString = weightEditText.getText().toString().trim();
                if (weightString.isEmpty()) {
                    Toast.makeText(MainActivity.this, "Lütfen bir ağırlık girin", Toast.LENGTH_SHORT).show();
                    return;
                }
                double weight = Double.parseDouble(weightString);

                // Tarih bilgisini oluştur
                DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss", Locale.getDefault());
                String date = dateFormat.format(Calendar.getInstance().getTime());

                // Veritabanına kaydet
                database.execSQL("INSERT INTO weights (weight, date, active) VALUES (?, ?, 1)", new Object[] {weight, date});

                // ListView'i güncelle
                Cursor cursor = database.rawQuery("SELECT * FROM weights WHERE active = 1 ORDER BY date DESC", null);
                adapter.changeCursor(cursor);
                adapter.notifyDataSetChanged();

                // Giriş alanını temizle
                weightEditText.setText("");
            }
        });
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        // Veritabanı bağlantısını kapat
        database.close();
    }
}