package hr.powersoft.metus.Login;

import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.Toast;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.w3c.dom.Document;
import org.w3c.dom.Element;

import hr.powersoft.metus.MainActivity;
import hr.powersoft.metus.R;
import hr.powersoft.metus.XmlParser;
import hr.powersoft.web.ActivityConstants;
import hr.powersoft.web.AsyncRespListener;
import hr.powersoft.web.WebParams;
import hr.powersoft.web.WebRequest;


public class LoginActivity extends AppCompatActivity {

    private Button button;
    private EditText etAppKey;
    private EditText etUsername;
    private EditText etPassword;
    private String appKey = "";
    private String username = "";
    private String password = "";
    private String catalog = "";
    private String cipher = "";
    private SharedPreferences preferences;
    private SharedPreferences.Editor editor;
    private Intent intent;
    private CheckBox checkBoxRemeber;

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

        preferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
        editor = preferences.edit();
        button = (Button)findViewById(R.id.buttonLogin);
        etAppKey = (EditText)findViewById(R.id.app_key);
        etAppKey = (EditText) findViewById(R.id.app_key);
        etAppKey.setText(preferences.getString("appKey",""));
        etUsername = (EditText)findViewById(R.id.etUsername);
        etPassword = (EditText)findViewById(R.id.etPassword);
        checkBoxRemeber = (CheckBox)findViewById(R.id.checkBoxRemember);

        intent = getIntent();

        if (intent != null)
        {
            if(intent.getStringExtra("username") != null && intent.getStringExtra("password") != null)
            {
                etUsername.setText(intent.getStringExtra("username"));
                etPassword.setText(intent.getStringExtra("password"));
            }
        }

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                findViewById(R.id.avloadingIndicatorView).setVisibility(View.VISIBLE);

                appKey = etAppKey.getText().toString();
                username = etUsername.getText().toString();
                password = etPassword.getText().toString();

                if(appKey.isEmpty())
                    appKey = "";
                if(username.isEmpty())
                    username = "";
                if(password.isEmpty())
                    password = "";

                WebParams params = new WebParams();
                params.postParameters = "appkey=" + appKey + "&uname=" + username + "&pwd=" + password;
                params.listener = listener;

                new WebRequest(ActivityConstants.ActivityConst.LOGIN_ACTIVITY).execute(params);
            }
        });

    }

    AsyncRespListener listener = new AsyncRespListener() {
        @Override
        public void processFinished(String result) {
            findViewById(R.id.avloadingIndicatorView).setVisibility(View.GONE);

            if (result == null || result.isEmpty())
            {
                Toast.makeText(LoginActivity.this, "Greška pri povezivanju.", Toast.LENGTH_SHORT).show();
                return;
            }

            XmlParser xmlParser = new XmlParser();
            Document document = xmlParser.getDomElement(result);
            Element root = document.getDocumentElement();
            String resultString = root.getTextContent();

            if (resultString == "Authentication failed!") {
                Toast.makeText(LoginActivity.this, "Greška pri autentikaciji.", Toast.LENGTH_SHORT).show();
                return;
            }

            JSONArray jsonArray = null;
            JSONObject jsonObject = null;

            try
            {
                jsonArray = new JSONArray(resultString);
                if(jsonArray.length() == 0) throw new JSONException("Nema podataka");

                jsonObject = jsonArray.getJSONObject(0);
                username = jsonObject.getString("korisnickoime");
                password = jsonObject.getString("lozinka");
                catalog = jsonObject.getString("Katalog");
                cipher = jsonObject.getString("Sifra");

                if(checkBoxRemeber.isChecked())
                {
                    editor.putString("remember", username);
                }

                Intent intent = new Intent(LoginActivity.this, MainActivity.class);
                startActivity(intent);
                finish();
            }
            catch (JSONException e)
            {
                Toast.makeText(getApplicationContext(),"Greška pri autentikaciji.",Toast.LENGTH_SHORT).show();
            }
        }
    };

    @Override
    protected void onPause() {
        super.onPause();
        saveCollection();
    }

    private void saveCollection() {
        editor.clear();
        editor.putString("appKey",appKey);
        editor.putString("catalog",catalog);
        editor.putString("cipher", cipher);
        editor.putString("username", username);
        editor.putString("password", password);
        editor.commit();
    }

    @Override
    protected void onResume() {
        super.onResume();
        etAppKey = (EditText) findViewById(R.id.app_key);
        etAppKey.setText(preferences.getString("appKey",""));
    }

}