package course.labs.activitylab;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class ActivityOne extends Activity {

    private static final String RESTART_KEY = "restart";
    private static final String RESUME_KEY = "resume";
    private static final String START_KEY = "start";
    private static final String CREATE_KEY = "create";

    // String for LogCat documentation
    private final static String TAG = "Lab-ActivityOne";

    // Lifecycle counters

    private int mCreate;
    private int mStart;
    private int mResume;
    private int mRestart;

    private TextView mTvCreate;
    private TextView mTvStart;
    private TextView mTvResume;
    private TextView mTvRestart;

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

        mTvCreate = (TextView) findViewById(R.id.create);
        mTvStart = (TextView) findViewById(R.id.start);
        mTvResume = (TextView) findViewById(R.id.resume);
        mTvRestart = (TextView) findViewById(R.id.restart);

        Button launchActivityTwoButton = (Button) findViewById(R.id.bLaunchActivityTwo);
        launchActivityTwoButton.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Intent intent = new Intent(ActivityOne.this, ActivityTwo.class);
                startActivity(intent);
            }
        });

        // Check for previously saved state
        if (savedInstanceState != null) {
            Log.i(TAG, "restore savedInstanceState");
            mCreate = (Integer) savedInstanceState.getSerializable("mCreate");
            mStart = (Integer) savedInstanceState.getSerializable("mStart");
            mResume = (Integer) savedInstanceState.getSerializable("mResume");
            mRestart = (Integer) savedInstanceState.getSerializable("mRestart");
        }

        Log.i(TAG, "onCreate()");
        mCreate += 1;
        displayCounts();
    }

    // Lifecycle callback overrides

    @Override
    public void onStart() {
        super.onStart();
        Log.i(TAG, "onStart()");
        mStart += 1;
        displayCounts();
    }

    @Override
    public void onResume() {
        super.onResume();
        Log.i(TAG, "onResume()");
        mResume += 1;
        displayCounts();
    }

    @Override
    public void onPause() {
        super.onPause();
        Log.i(TAG, "onPause()");
    }

    @Override
    public void onStop() {
        super.onStop();
        Log.i(TAG, "onStop()");
    }

    @Override
    public void onRestart() {
        super.onRestart();
        Log.i(TAG, "onRestart()");
        mRestart += 1;
        displayCounts();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        Log.i(TAG, "onDestroy()");
    }

    @Override
    public void onSaveInstanceState(Bundle savedInstanceState) {
        Log.i(TAG, "onSaveInstanceState()");
        savedInstanceState.putSerializable("mCreate", mCreate);
        savedInstanceState.putSerializable("mStart", mStart);
        savedInstanceState.putSerializable("mResume", mResume);
        savedInstanceState.putSerializable("mRestart", mRestart);
    }

    // Updates the displayed counters
    public void displayCounts() {
        mTvCreate.setText("onCreate() calls: " + mCreate);
        mTvStart.setText("onStart() calls: " + mStart);
        mTvResume.setText("onResume() calls: " + mResume);
        mTvRestart.setText("onRestart() calls: " + mRestart);
    }
}