package lt.ebp.take2ga.authentication;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.graphics.LinearGradient;
import android.graphics.Shader;
import android.graphics.Typeface;
import android.os.AsyncTask;
import android.os.Bundle;
import android.text.Spannable;
import android.text.SpannableStringBuilder;
import android.text.style.StyleSpan;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import org.json.JSONException;
import org.json.JSONObject;

import lt.ebp.take2ga.MainActivity;
import lt.ebp.take2ga.R;
import lt.ebp.take2ga.utils.JSONParser;
import lt.ebp.take2ga.utils.RequestManager;

/**
 * User login activity
 * Created by emilis on 16-04-02.
 */
public class LoginActivity extends Activity implements OnClickListener, RequestManager.ResponseListener {

    private EditText user, pass;
    private Button mSubmit, mRegister;

    // Progress Dialog
    private ProgressDialog pDialog;

    //JSON element ids from repsonse of php script:
    private static final String TAG_SUCCESS = "success";
    private static final String TAG_MESSAGE = "error";

    RequestManager requestManager = new RequestManager();

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

        //setup input fields
        user = (EditText)findViewById(R.id.email);
        pass = (EditText)findViewById(R.id.password);

        TextView memberLogin = (TextView)findViewById(R.id.memberLogin);
        TextView notMember = (TextView)findViewById(R.id.not_a_member_yet);
        Button forgot = (Button)findViewById(R.id.forgot);
        Button login = (Button)findViewById(R.id.login);
        Button watch = (Button)findViewById(R.id.register);

        Typeface geomanist = Typeface.createFromAsset(getAssets(), "fonts/geomanist-regular-webfont.ttf");
        Typeface roboto_medium = Typeface.createFromAsset(getAssets(), "fonts/Roboto-Medium.ttf");
        Typeface gadugi = Typeface.createFromAsset(getAssets(), "fonts/gadugi.ttf");
        Typeface gadugi_bold = Typeface.createFromAsset(getAssets(), "fonts/gadugib.ttf");

        final SpannableStringBuilder string_notmember = new SpannableStringBuilder(notMember.getText());
        final SpannableStringBuilder string_watch = new SpannableStringBuilder(watch.getText());

        final StyleSpan geomanist_span = new StyleSpan(geomanist.getStyle());
        final StyleSpan gadugi_span = new StyleSpan(gadugi.getStyle());
        final StyleSpan gadugi_bold_span = new StyleSpan(gadugi_bold.getStyle());

        string_notmember.setSpan(geomanist_span, 0, 6, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
        string_notmember.setSpan(gadugi_bold_span, 6, 17, Spannable.SPAN_INCLUSIVE_INCLUSIVE);

        string_watch.setSpan(gadugi_span, 0, 11, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
        string_watch.setSpan(gadugi_bold_span, 11, 15, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
        string_watch.setSpan(gadugi_span, 15, 18, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
        string_watch.setSpan(gadugi_bold_span, 18, 26, Spannable.SPAN_INCLUSIVE_INCLUSIVE);

        notMember.setText(string_notmember);
        watch.setText(string_watch);

        memberLogin.setTypeface(geomanist);

        Shader memberGradient=new LinearGradient(0, 0, 0, memberLogin.getPaint().getTextSize(),
                new int[]{Color.parseColor("#fa9338"),Color.parseColor("#ff7800")},
                new float[]{0, 1}, Shader.TileMode.CLAMP);
        memberLogin.getPaint().setShader(memberGradient);

        forgot.setTypeface(geomanist);
        notMember.setTypeface(gadugi);
        login.setTypeface(gadugi_bold);
        user.setTypeface(roboto_medium);
        pass.setTypeface(roboto_medium);

        //setup buttons
        mSubmit = (Button) findViewById(R.id.login);
        mRegister = (Button) findViewById(R.id.register);

        //register listeners
        mSubmit.setOnClickListener(this);
        mRegister.setOnClickListener(this);

    }

    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.login:
                if (JSONParser.isConnected(LoginActivity.this)) {
                    new AttemptLogin().execute();
                } else {
                    Toast.makeText(LoginActivity.this, "No internet access", Toast.LENGTH_LONG).show();
                }
                break;
            case R.id.register:
                Intent i = new Intent(this, RegisterActivity.class);
                startActivity(i);
                break;

            default:
                break;
        }
    }

    public void onResponseReceived(final JSONObject response) {
        try {
            int success = response.optInt(TAG_SUCCESS);
            if (success == 1) {
                Log.d("Login Successful!", response.toString());
                String token = response.getString("token");
                SharedPreferences sharedPreferences = getSharedPreferences("Login.loginPrefs", Context.MODE_PRIVATE);
                SharedPreferences.Editor editor = sharedPreferences.edit();
                editor.putString("loginToken", token);
                editor.commit();
                Intent i = new Intent(LoginActivity.this, MainActivity.class);
                finish();
                startActivity(i);
            } else {
                Log.d("Login Falure!", response.getString(TAG_MESSAGE));
                this.runOnUiThread(new Runnable() {
                    protected final String error = response.getString(TAG_MESSAGE);

                    public void run() {
                        Toast.makeText(LoginActivity.this, error, Toast.LENGTH_LONG).show();
                    }
                });
            }
        } catch (JSONException e) {
            Log.d("Error", e.toString());
        }

        pDialog.dismiss();
    }

    class AttemptLogin extends AsyncTask<String, String, String> {

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            pDialog = new ProgressDialog(LoginActivity.this);
            pDialog.setMessage("Attempting login..");
            pDialog.setIndeterminate(false);
            pDialog.setCancelable(true);
            pDialog.show();
        }

        @Override
        protected String doInBackground(String... args) {
            String username = user.getText().toString();
            String password = pass.getText().toString();
            requestManager.loginUser(username, password, LoginActivity.this);

            return null;
        }

        // After completing background task Dismiss the progress dialog

        protected void onPostExecute(String file_url) {
            //dismiss the dialog once product deleted
            pDialog.dismiss();
        }
    }
}