package com.unfreezeday.unfreezeday.activities;

import android.content.Context;
import android.content.Intent;
import android.graphics.Rect;
import android.media.MediaPlayer;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.TypedValue;
import android.view.KeyEvent;
import android.view.View;
import android.view.ViewTreeObserver;
import android.view.Window;
import android.view.WindowManager;
import android.widget.EditText;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.unfreezeday.unfreezeday.R;
import com.unfreezeday.unfreezeday.interfaces.OnTaskCompleted;
import com.unfreezeday.unfreezeday.utils.FontsLoader;
import com.unfreezeday.unfreezeday.utils.SharedPreference;

/**
 * Created by Arnau on 18/3/17.
 */

public class LoginActivity extends AppCompatActivity implements OnTaskCompleted {

    private RelativeLayout rlLogin, rlRegister, rlBackLogin;
    private EditText etNomUsuari, password;
    private boolean soundMuted;
    private FirebaseAuth mAuth;
    private FirebaseAuth.AuthStateListener mAuthListener;
    private Handler mHandler;
    private static final String TAG = "UFD, LoginActivity: ";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //makes the activity fullscreen
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.activity_login);

        soundMuted = SharedPreference.isSoundMuted(this);
        initComponents();
        initListeners();
        initGUI();
    }

    private Runnable decor_view_settings = new Runnable()
    {
        public void run()
        {
            getWindow().getDecorView().setSystemUiVisibility(
                    View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                            | View.SYSTEM_UI_FLAG_FULLSCREEN
                            | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
        }
    };

    private void initComponents() {
        // TextView
        rlRegister = (RelativeLayout) findViewById(R.id.rlRegister);
        rlLogin = (RelativeLayout) findViewById(R.id.rlLogin);
        rlBackLogin = (RelativeLayout) findViewById(R.id.rlBackLogin);
        mHandler = new Handler();

        // EditText
        etNomUsuari = (EditText) findViewById(R.id.uernameok);
        etNomUsuari.setTypeface(FontsLoader.getTypeface(this, FontsLoader.frosw));
        password = (EditText) findViewById(R.id.password);
        password.setTypeface(FontsLoader.getTypeface(this, FontsLoader.frosw));

        // Firebase
        mAuth = FirebaseAuth.getInstance();
    }

    private void initListeners(){
        final MediaPlayer mp = MediaPlayer.create(this, R.raw.click_sound);
        rlRegister.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (!soundMuted) mp.start();
                Intent myIntent = new Intent(LoginActivity.this, RegisterActivity.class);
                LoginActivity.this.startActivity(myIntent);
            }
        });

        ((RelativeLayout) findViewById(R.id.activity_login)).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mHandler.post(decor_view_settings);
            }
        });


        password.setOnFocusChangeListener(new View.OnFocusChangeListener() {
            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                if (hasFocus) {
                    //got focus
                } else {
                    mHandler.post(decor_view_settings);
                }
            }
        });

        rlBackLogin.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (!soundMuted) mp.start();
                LoginActivity.this.finish();
            }
        });

        rlLogin.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (!soundMuted) mp.start();
                if (etNomUsuari.getText().toString().equals("") || password.getText().toString().equals("")) {
                    Toast.makeText(LoginActivity.this, R.string.error_empty_data, Toast.LENGTH_SHORT).show();
                } else {
                    new FirebaseLogin(etNomUsuari.getText().toString(), password.getText().toString(), LoginActivity.this).execute();
                }
            }
        });

        mAuthListener = new FirebaseAuth.AuthStateListener() {
            @Override
            public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
                FirebaseUser user = firebaseAuth.getCurrentUser();
                if (user != null) {
                    // User is signed in
                    Log.d(TAG, "onAuthStateChanged: signed_in: " + user.getUid());
                } else {
                    // User is signed out
                    Log.d(TAG, "onAuthStateChanged: signed_out");
                }
            }
        };
    }

    private void initGUI() {
        // setFont
        ((TextView)findViewById(R.id.txtLogin)).setTypeface(FontsLoader.getTypeface(LoginActivity.this, FontsLoader.frosw));
        ((TextView)findViewById(R.id.txtRegister)).setTypeface(FontsLoader.getTypeface(LoginActivity.this, FontsLoader.frosw));

    }



    @Override
    protected void onStart() {
        super.onStart();
        mAuth.addAuthStateListener(mAuthListener);
    }

    @Override
    protected void onStop() {
        super.onStop();
        if (mAuthListener != null) {
            mAuth.removeAuthStateListener(mAuthListener);
        }
    }

    @Override
    public void onWindowFocusChanged(boolean hasFocus)
    {
        super.onWindowFocusChanged(hasFocus);
        if(hasFocus)
        {
            mHandler.post(decor_view_settings);
        }
    }

    @Override
    public void onTaskCompleted(boolean successful) {
        if (successful) {
            SharedPreference.setUserName(LoginActivity.this, etNomUsuari.getText().toString());
            Intent myIntent = new Intent(LoginActivity.this, ProfileActivity.class);
            LoginActivity.this.startActivity(myIntent);
            LoginActivity.this.finish();
        } else {
            Toast.makeText(LoginActivity.this, LoginActivity.this.getResources().getString(R.string.error_user_password),
                    Toast.LENGTH_SHORT).show();
        }
    }

    private class FirebaseLogin extends AsyncTask<Void, Void, Void> {

        private String userName, password;
        private OnTaskCompleted listener;

        public FirebaseLogin(String userName, String password, OnTaskCompleted listener) {
            super();
            this.userName = userName;
            this.password = password;
            this.listener = listener;
        }

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
        }

        @Override
        protected Void doInBackground(Void... params) {
            mAuth.signInWithEmailAndPassword(userName, password)
                    .addOnCompleteListener(LoginActivity.this, new OnCompleteListener<AuthResult>() {
                        @Override
                        public void onComplete(@NonNull Task<AuthResult> task) {
                            // If sign in fails, display a message to the user. If sign in succeeds
                            // the auth state listener will be notified and logic to handle the
                            // signed in user can be handled in the listener.
                            listener.onTaskCompleted(task.isSuccessful());
                        }
                    });
            return null;
        }

        @Override
        protected void onPostExecute(Void aVoid) {
            super.onPostExecute(aVoid);
        }
    }

}