package com.android.udl.miniact6_firebase;

import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GoogleApiAvailability;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.OnSuccessListener;
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.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import com.google.firebase.iid.FirebaseInstanceId;
import com.google.firebase.messaging.FirebaseMessaging;

public class MainActivity extends AppCompatActivity {

    private FirebaseAuth firebaseAuth;
    private FirebaseAuth.AuthStateListener authStateListener;
    //private MyFirebaseMessagingService messagingService;

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

        IsPlayServicesAvailable();

        final Button button = (Button) findViewById(R.id.button2);
        final EditText editText = (EditText) findViewById(R.id.editText);
        final TextView textView = (TextView) findViewById(R.id.textview);
        final Button buttonReg = (Button) findViewById(R.id.btn_reg);
        final Button buttonIn = (Button) findViewById(R.id.btn_login);
        final Button buttonOut = (Button) findViewById(R.id.btn_logout);
        final EditText editTextMail = (EditText) findViewById(R.id.editTextMail);
        final EditText editTextPass = (EditText) findViewById(R.id.editTextPass);
        final TextView textView_user = (TextView) findViewById(R.id.textview_user);
        final Button buttonRegisterTopic = (Button) findViewById(R.id.buttonRegisterTopic);
        final Button buttonUnregisterTopic = (Button) findViewById(R.id.buttonUnregisterTopic);

        final Button button_token = (Button) findViewById(R.id.btn_idtoken);

        firebaseAuth = FirebaseAuth.getInstance();
        //messagingService = new MyFirebaseMessagingService();
        FirebaseDatabase db = FirebaseDatabase.getInstance();
        final DatabaseReference reference = db.getReference("message");


        authStateListener = new FirebaseAuth.AuthStateListener() {
            @Override
            public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
                FirebaseUser user = firebaseAuth.getCurrentUser();
                if (user != null) {
                    // User is signed in
                    Log.d("Auth", "onAuthStateChanged:signed_in:" + user.getUid());
                    button.setEnabled(true);
                    buttonIn.setEnabled(false);
                    buttonOut.setEnabled(true);
                    buttonReg.setEnabled(false);
                    textView_user.setText("Signed in as "+user.getEmail());

                    reference.addValueEventListener(new ValueEventListener() {
                        @Override
                        public void onDataChange(DataSnapshot dataSnapshot) {
                            String message = dataSnapshot.getValue(String.class);
                            textView.setText(message);
                        }

                        @Override
                        public void onCancelled(DatabaseError databaseError) {
                            Toast.makeText(getApplicationContext(), "Database error: No logged user",
                                    Toast.LENGTH_SHORT).show();
                        }
                    });

                } else {
                    // User is signed out
                    Log.d("Auth", "onAuthStateChanged:signed_out");
                    button.setEnabled(false);
                    buttonIn.setEnabled(true);
                    buttonOut.setEnabled(false);
                    buttonReg.setEnabled(true);
                    textView.setText("Please login");
                    textView_user.setText("No logged user");
                }
            }
        };




        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                reference.setValue(editText.getText().toString());
            }
        });

        buttonReg.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (!editTextMail.getText().toString().equals("") &&
                        editTextPass.getText().toString().length() > 5) {
                    firebaseAuth.createUserWithEmailAndPassword(editTextMail.getText().toString(),
                            editTextPass.getText().toString())
                            .addOnCompleteListener(new OnCompleteListener<AuthResult>() {
                                @Override
                                public void onComplete(@NonNull Task<AuthResult> task) {
                                    if (!task.isSuccessful()) {
                                        Toast.makeText(getApplicationContext(), "Register failed",
                                                Toast.LENGTH_SHORT).show();
                                    } else {
                                        Toast.makeText(getApplicationContext(), "Register succesful",
                                                Toast.LENGTH_SHORT).show();
                                        editTextMail.setText("");
                                        editTextPass.setText("");
                                    }
                                }
                            });
                } else {
                    Toast.makeText(getApplicationContext(), "Mail is blank or pass is shorter than 6 characters",
                            Toast.LENGTH_SHORT).show();
                }
            }
        });

        buttonIn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (!editTextMail.getText().toString().equals("") &&
                        !editTextPass.getText().toString().equals("")) {
                    firebaseAuth.signInWithEmailAndPassword(editTextMail.getText().toString(),
                            editTextPass.getText().toString())
                            .addOnCompleteListener(new OnCompleteListener<AuthResult>() {
                                @Override
                                public void onComplete(@NonNull Task<AuthResult> task) {
                                    if (!task.isSuccessful()) {
                                        Toast.makeText(getApplicationContext(), "Login failed",
                                                Toast.LENGTH_SHORT).show();
                                    }
                                    editTextMail.setText("");
                                    editTextPass.setText("");
                                }
                            });
                } else {
                    Toast.makeText(getApplicationContext(), "Mail and pass cannot be empty",
                            Toast.LENGTH_SHORT).show();
                }
            }
        });

        buttonOut.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                firebaseAuth.signOut();
            }
        });


        button_token.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String token = FirebaseInstanceId.getInstance().getToken();

                String msg = "Your token is: " + token;

                Log.d("ID Token", msg);
                Toast.makeText(getApplicationContext(), msg, Toast.LENGTH_SHORT).show();

                DatabaseReference fcmRef = FirebaseDatabase.getInstance().getReference("fcmTokens");
                fcmRef.child(token).setValue(true).addOnSuccessListener(new OnSuccessListener<Void>() {
                    @Override
                    public void onSuccess(Void aVoid) {
                        Log.d("aa", "Token updated");
                    }
                });

            }
        });


        buttonRegisterTopic.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //messagingService.subscribeToTopic("news");
                FirebaseMessaging.getInstance().subscribeToTopic("news");
                Toast.makeText(getApplicationContext(),"subscribed to topic news",Toast.LENGTH_SHORT).show();
                Log.i("FIREBASEMESAGINGSERV: ","subscribed to topic news");
            }
        });

        buttonUnregisterTopic.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //messagingService.unsubscribeFromTopic("news");
                FirebaseMessaging.getInstance().unsubscribeFromTopic("news");
                Toast.makeText(getApplicationContext(),"unsubscribed from topic news",Toast.LENGTH_SHORT).show();
                Log.i("FIREBASEMESAGINGSERV: ","unsubscribed from topic news");
            }
        });


    }

    @Override
    public void onStart() {
        super.onStart();
        firebaseAuth.addAuthStateListener(authStateListener);
    }

    @Override
    public void onStop() {
        super.onStop();
        if (authStateListener != null) {
            firebaseAuth.removeAuthStateListener(authStateListener);
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
        IsPlayServicesAvailable();
    }

    protected void IsPlayServicesAvailable() {
        int resultCode = GoogleApiAvailability.getInstance().isGooglePlayServicesAvailable(this);
        if (resultCode == ConnectionResult.SUCCESS){
            Toast.makeText(getApplicationContext(), "isGooglePlayServicesAvailable SUCCESS",
                    Toast.LENGTH_SHORT).show();
        } else {
            GoogleApiAvailability.getInstance().getErrorDialog(this, resultCode, 1).show();
        }
    }


}