package com.example.doksara.firebasesampleproject;

import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.widget.Button;
import android.widget.EditText;
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 butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.OnClick;

public class MainActivity extends AppCompatActivity {
    @BindView(R.id.uiEmailInput) EditText uiEmailInput;
    @BindView(R.id.uiPasswordInput) EditText uiPasswordInput;
    @BindView(R.id.uiLogin) Button loginButton;
    @BindView(R.id.uiRegisterUser) Button registerButton;
    private FirebaseAuth mAuth;

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

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

    @Override
    public void onStart() {
        super.onStart();
        FirebaseUser currentUser = mAuth.getCurrentUser();
       // updateUI(currentUser);
    }

    private void signIn(String email, String password) {
        if (!validateForm()) {
            return;
        }

        // [START sign_in_with_email]
        mAuth.signInWithEmailAndPassword(email, password)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (task.isSuccessful()) {
                            // Sign in success, update UI with the signed-in user's information
                            FirebaseUser user = mAuth.getCurrentUser();
                            Toast.makeText(MainActivity.this, "Authentication success.",
                                    Toast.LENGTH_SHORT).show();
                        } else {
                            // If sign in fails, display a message to the user.
                            Toast.makeText(MainActivity.this, "Authentication failed!",
                                    Toast.LENGTH_SHORT).show();
                        }
                    }
                });
        // [END sign_in_with_email]
    }

    private void createAccount(String email, String password) {
        if (!validateForm()) {
            return;
        }

        // [START create_user_with_email]
        mAuth.createUserWithEmailAndPassword(email, password)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (task.isSuccessful()) {
                            // Sign in success, update UI with the signed-in user's information
                            FirebaseUser user = mAuth.getCurrentUser();
                            Toast.makeText(MainActivity.this, "Authentication success.",
                                    Toast.LENGTH_SHORT).show();
                        } else {
                            Toast.makeText(MainActivity.this, "Authentication failed.",
                                    Toast.LENGTH_SHORT).show();
                        }
                    }
                });
        // [END create_user_with_email]
    }

    private boolean validateForm() {
        boolean valid = true;

        String email = uiEmailInput.getText().toString();
        if (TextUtils.isEmpty(email)) {
            uiEmailInput.setError("Required.");
            valid = false;
        } else {
            uiEmailInput.setError(null);
        }

        String password = uiPasswordInput.getText().toString();
        if (TextUtils.isEmpty(password)) {
            uiPasswordInput.setError("Required.");
            valid = false;
        } else {
            uiPasswordInput.setError(null);
        }

        return valid;
    }

    @OnClick(R.id.uiLogin)
    public void Login() {
        signIn(uiEmailInput.getText().toString(), uiPasswordInput.getText().toString());
    }

    @OnClick(R.id.uiRegisterUser)
    public void Register() {
        createAccount(uiEmailInput.getText().toString(), uiPasswordInput.getText().toString());
    }

    private void signOut() {
        mAuth.signOut();
    }
}