import android.content.Intent;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.text.TextUtils;
import android.util.Log;
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.FirebaseAuthException;

public class LoginActivity extends AppCompatActivity {

    private Toolbar jLoginToolbar;

    private EditText jLoginEmail;
    private EditText jLoginPassword;

    private Button jLoginBtn;
    private Button jAdminLoginBtn;
    private FirebaseAuth mAuth;

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

        mAuth = FirebaseAuth.getInstance();

        jLoginToolbar = (Toolbar) findViewById(R.id.loginToolbar);
        setSupportActionBar(jLoginToolbar);
        getSupportActionBar().setTitle("Account Login");
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        jLoginEmail = (EditText) findViewById(R.id.loginEmail);
        jLoginPassword = (EditText) findViewById(R.id.loginPassword);
        jLoginBtn = (Button) findViewById(R.id.loginBtn);
        jAdminLoginBtn = (Button) findViewById(R.id.loginAdminBtn);

        jAdminLoginBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                    Intent intentAdmin = new Intent(LoginActivity.this, AdminLoginActivity.class);
                    startActivity(intentAdmin);
            }
        });

        jLoginBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String userLoginEmail = jLoginEmail.getText().toString();
                String userLoginPassword = jLoginPassword.getText().toString();

                if(!TextUtils.isEmpty(userLoginEmail)&& !TextUtils.isEmpty(userLoginPassword)) {
                    loginUser(userLoginEmail, userLoginPassword);
                }else{
                    Toast.makeText(LoginActivity.this, "Failed Login: Empty Inputs are not allowed", Toast.LENGTH_SHORT).show();
                }
            }
        });

    }

    private void loginUser(final String userLoginEmail, final String userLoginPassword) {
        mAuth.signInWithEmailAndPassword(userLoginEmail, userLoginPassword)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (task.isSuccessful()) {
                            Intent intentMain = new Intent(LoginActivity.this, MainActivity.class);
                            intentMain.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
                            startActivity(intentMain);
                            finish();
                        }else{
                            FirebaseAuthException e = (FirebaseAuthException )task.getException();
                            Toast.makeText(LoginActivity.this, "Failed Login: "+e.getMessage(), Toast.LENGTH_SHORT).show();
                            return;
                        }
                    }
                });
    }
}