package com.example.mojblog;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
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;

public class MainActivity extends AppCompatActivity {
    private FirebaseAuth mAuth;
    private FirebaseAuth.AuthStateListener mAuthListener;
    private FirebaseUser mUser;
    private Button loginButton;
    private Button createAccountButton;
    private EditText emailField;
    private EditText passwordField;



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        loginButton = findViewById(R.id.loginButton);
        createAccountButton = findViewById(R.id.createAccountButton);
        emailField = findViewById(R.id.emailEditText);
        passwordField = findViewById(R.id.passwordEditText);

        mAuth = FirebaseAuth.getInstance();
        mAuthListener = new FirebaseAuth.AuthStateListener() {
            @Override
            public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
                mUser = firebaseAuth.getCurrentUser();
                if (mUser != null) {
                    Toast.makeText(MainActivity.this,
                            "Zalogowano", Toast.LENGTH_LONG).show();
                } else {
                    Toast.makeText(MainActivity.this,
                            "Nie jesteś zalogowany", Toast.LENGTH_LONG).show();
                }
            }
        };

        loginButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (!TextUtils.isEmpty(emailField.getText().toString()) &&
                !TextUtils.isEmpty(passwordField.getText().toString())) {
                    String email = emailField.getText().toString();
                    String password = passwordField.getText().toString();

                    login(email, password);
                } else {

                }
            }
        });
    }

    private void login(String email, String password) {
        mAuth.signInWithEmailAndPassword(email, password)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (task.isSuccessful()) {
                            Toast.makeText(MainActivity.this,
                                    "Dobre dane - zalogowano", Toast.LENGTH_LONG).show();
                        } else {
                            Toast.makeText(MainActivity.this,
                                    "Zły email lub hasło", Toast.LENGTH_LONG).show();
                        }
                    }
                });
    }

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

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