john_konstantin_007

public class MainActivity extends AppCompatActivity {


    Button btnSignIn, btnRegister;
    FirebaseAuth auth;
    FirebaseDatabase db;
    DatabaseReference users;

    RelativeLayout root;


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

        btnSignIn = findViewById(R.id.btnSignIn);
        btnRegister = findViewById(R.id.btnRegister);

        root = findViewById(R.id.root_element);

        auth = FirebaseAuth.getInstance();
        db = FirebaseDatabase.getInstance();
        users = db.getReference("users");

        btnRegister.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showRegisterWindoW();
            }
        });
        btnSignIn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showSignInWindow();
            }
        });

    }

    private void showSignInWindow() {
        AlertDialog.Builder dialog = new AlertDialog.Builder(this);
        dialog.setTitle("Войти");
        dialog.setMessage("Введите данные для входа");

        LayoutInflater inflater = LayoutInflater.from(this);
        View sign_in_window = inflater.inflate(R.layout.sign_in_window, null);
        dialog.setView(sign_in_window);

        final MaterialEditText email = sign_in_window.findViewById(R.id.emailField);
        final MaterialEditText pass = sign_in_window.findViewById(R.id.passField);

        dialog.setNegativeButton("Отменить", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int which) {
                dialogInterface.dismiss();
            }
        });
        dialog.setPositiveButton("Войти", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int which) {
                if (TextUtils.isEmpty(email.getText().toString())) {
                    Snackbar.make(root, "Введите вашу почту", Snackbar.LENGTH_SHORT).show();
                    return;
                }

                if (pass.getText().toString().length() < 5) {
                    Snackbar.make(root, "Пароль должен быть более 5 символов", Snackbar.LENGTH_SHORT).show();
                    return;
                }
                auth.signInWithEmailAndPassword(email.getText().toString(), pass.getText().toString())
                        .addOnSuccessListener(new OnSuccessListener<AuthResult>() {
                            @Override
                            public void onSuccess(AuthResult authResult) {
                                startActivity(new Intent(MainActivity.this, MapiActivity.class));
                                finish();
                            }
                        }).addOnFailureListener(new OnFailureListener() {
                    @Override
                    public void onFailure(@NonNull Exception e) {
                        Snackbar.make(root, "Ошибка авторизации" + e.getMessage(), Snackbar.LENGTH_SHORT).show();
                    }
                });

            }
        });

        dialog.show();

    }


    private void showRegisterWindoW() {
        AlertDialog.Builder dialog = new AlertDialog.Builder(this);
        dialog.setTitle("Зарегистрироваться");
        dialog.setMessage("Введите данные для регистрации");

        LayoutInflater inflater = LayoutInflater.from(this);
        View register_window = inflater.inflate(R.layout.register_window, null);
        dialog.setView(register_window);

        final MaterialEditText email = register_window.findViewById(R.id.emailField);
        final MaterialEditText pass = register_window.findViewById(R.id.passField);
        final MaterialEditText name = register_window.findViewById(R.id.nameField);
        final MaterialEditText mname = register_window.findViewById(R.id.mnameField);
        final MaterialEditText lname = register_window.findViewById(R.id.lnameField);
        final MaterialEditText klass = register_window.findViewById(R.id.klassField);

        dialog.setNegativeButton("Отменить", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int which) {
                dialogInterface.dismiss();
            }
        });
        dialog.setPositiveButton("Добавить", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int which) {
                if (TextUtils.isEmpty(email.getText().toString())) {
                    Snackbar.make(root, "Введите вашу почту", Snackbar.LENGTH_SHORT).show();
                    return;
                }

                if (pass.getText().toString().length() < 5) {
                    Snackbar.make(root, "Пароль должен быть более 5 символов", Snackbar.LENGTH_SHORT).show();
                    return;
                }

                if (TextUtils.isEmpty(name.getText().toString())) {
                    Snackbar.make(root, "Введите ваше имя", Snackbar.LENGTH_SHORT).show();
                    return;
                }

                if (TextUtils.isEmpty(mname.getText().toString())) {
                    Snackbar.make(root, "Введите вашу фамилию", Snackbar.LENGTH_SHORT).show();
                    return;
                }

                if (TextUtils.isEmpty(lname.getText().toString())) {
                    Snackbar.make(root, "Введите ваше отчество", Snackbar.LENGTH_SHORT).show();
                    return;
                }

                //регистрация пользователя
                auth.createUserWithEmailAndPassword(email.getText().toString(), pass.getText().toString())
                        .addOnSuccessListener(new OnSuccessListener<AuthResult>() {
                            @Override
                            public void onSuccess(AuthResult authResult) {
                                User user = new User();
                                user.setEmail(email.getText().toString());
                                user.setName(name.getText().toString());
                                user.setMname(mname.getText().toString());
                                user.setLname(lname.getText().toString());
                                user.setPass(pass.getText().toString());
                                user.setKlass(klass.getText().toString());

                                users.child(FirebaseAuth.getInstance().getCurrentUser().getUid())
                                        .setValue(user)
                                .addOnSuccessListener(new OnSuccessListener<Void>() {
                                    @Override
                                    public void onSuccess(Void aVoid) {
                                        Snackbar.make(root, "Пользователь добавлен", Snackbar.LENGTH_SHORT).show();
                                    }
                                });
                            }
                        }).addOnFailureListener(new OnFailureListener() {
                    @Override
                    public void onFailure(@NonNull Exception e) {
                        Snackbar.make(root, "Ошибка регистрации." + e.getMessage(),Snackbar.LENGTH_LONG).show();
                    }
                });
            }
        });

        dialog.show();
    }
}