add firebase configuration and helper

android/app/google-services.json

+{
+  "project_info": {
+    "project_number": "413062091488",
+    "firebase_url": "https://chatman-a99e6.firebaseio.com",
+    "project_id": "chatman-a99e6",
+    "storage_bucket": "chatman-a99e6.appspot.com"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:413062091488:android:71042f72808d827c",
+        "android_client_info": {
+          "package_name": "com.chatman"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "413062091488-sdfrjk51lo494mel9bbfj38rqlm7b6vj.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyBaahgA_2CnppVu0QVd21aNX_C7HVAccE0"
+        }
+      ],
+      "services": {
+        "analytics_service": {
+          "status": 1
+        },
+        "appinvite_service": {
+          "status": 1,
+          "other_platform_oauth_client": []
+        },
+        "ads_service": {
+          "status": 2
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}
\ No newline at end of file

android/app/src/main/java/com/chatman/AuthActivity.java

+package com.etsi;
+
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.support.annotation.NonNull;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.support.v7.widget.CardView;
+import android.transition.TransitionManager;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import com.etsi.helper.FirebaseHelper;
+import com.etsi.helper.PreferencesHelper;
+import com.etsi.model.Kreator;
+import com.etsi.model.Sobat;
+import com.google.firebase.database.DataSnapshot;
+import com.google.firebase.database.DatabaseError;
+import com.google.firebase.database.ValueEventListener;
+
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+public class AuthActivity extends AppCompatActivity {
+
+    // view component
+    private LinearLayout authContainer;
+    private CardView nameContainer;
+    private CardView confirmContainer;
+    private EditText emailEditText;
+    private EditText passwordEditText;
+    private EditText confirmEditText;
+    private EditText nameEditText;
+    private Button loginButton;
+    private Button registerButton;
+    private TextView switchTextView;
+
+
+    // activity state
+    private boolean isLoginView = true;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_auth);
+        bindView();
+        switchToLogin();
+    }
+
+    // bind all component view with it's xml
+    private void bindView() {
+        authContainer = findViewById(R.id.auth_container);
+        emailEditText = findViewById(R.id.auth_email);
+        passwordEditText = findViewById(R.id.auth_password);
+        confirmEditText = findViewById(R.id.auth_confirm);
+        nameEditText = findViewById(R.id.auth_name);
+        loginButton = findViewById(R.id.auth_login);
+        registerButton = findViewById(R.id.auth_register);
+        switchTextView = findViewById(R.id.auth_switch);
+    }
+
+    // do login
+    public void login(View view) {
+        final String email = emailEditText.getText().toString().trim();
+        final String password = passwordEditText.getText().toString().trim();
+
+        if (email.endsWith("@etsi.com")) {
+            FirebaseHelper.dbKreator.addListenerForSingleValueEvent(new ValueEventListener() {
+                @Override
+                public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
+                    if (!loginAsKreator(dataSnapshot, email, password)) {
+                        Toast.makeText(AuthActivity.this, "Email dan password tidak benar", Toast.LENGTH_SHORT).show();
+                    } else {
+
+                    }
+                }
+
+                @Override
+                public void onCancelled(@NonNull DatabaseError databaseError) {
+
+                }
+            });
+        } else {
+            FirebaseHelper.dbSobat.addListenerForSingleValueEvent(new ValueEventListener() {
+                @Override
+                public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
+                    if (!loginAsSobat(dataSnapshot, email, password)) {
+                        Toast.makeText(AuthActivity.this, "Email dan password tidak benar", Toast.LENGTH_SHORT).show();
+                    }
+                }
+
+                @Override
+                public void onCancelled(@NonNull DatabaseError databaseError) {
+
+                }
+            });
+        }
+    }
+
+    private boolean loginAsKreator(DataSnapshot dataSnapshot, String email, String password) {
+        for (DataSnapshot ds : dataSnapshot.getChildren()) {
+            Kreator kreator = ds.getValue(Kreator.class);
+            if (kreator.getEmail().equals(email) && kreator.getPassword().equals(md5(password))) {
+                PreferencesHelper.setUserFirebaseKey(this, ds.getKey());
+                PreferencesHelper.setCurrentKreatorKey(ds.getKey());
+                PreferencesHelper.setUserRole(this, PreferencesHelper.USER_ROLE_KREATOR);
+                startActivity(new Intent(this, MainActivity.class));
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private boolean loginAsSobat(DataSnapshot dataSnapshot, String email, String password) {
+        for (DataSnapshot ds : dataSnapshot.getChildren()) {
+            Sobat sobat = ds.getValue(Sobat.class);
+            if (sobat.getEmail().equals(email) && sobat.getPassword().equals(md5(password))) {
+                PreferencesHelper.setUserFirebaseKey(this, ds.getKey());
+                PreferencesHelper.setUserRole(this, PreferencesHelper.USER_ROLE_SOBAT);
+                startActivity(new Intent(this, MainActivity.class));
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private String md5(final String s) {
+        final String MD5 = "MD5";
+        try {
+            // Create MD5 Hash
+            MessageDigest digest = java.security.MessageDigest.getInstance(MD5);
+            digest.update(s.getBytes());
+            byte messageDigest[] = digest.digest();
+
+            // Create Hex String
+            StringBuilder hexString = new StringBuilder();
+            for (byte aMessageDigest : messageDigest) {
+                String h = Integer.toHexString(0xFF & aMessageDigest);
+                while (h.length() < 2)
+                    h = "0" + h;
+                hexString.append(h);
+            }
+            return hexString.toString();
+
+        } catch (NoSuchAlgorithmException e) {
+            e.printStackTrace();
+        }
+        return "";
+    }
+
+    // do register
+    public void register(View view) {
+        String name = nameEditText.getText().toString().trim();
+        String email = emailEditText.getText().toString().trim();
+        String password = passwordEditText.getText().toString().trim();
+        String confirm = confirmEditText.getText().toString().trim();
+
+        if (!password.equals(confirm)) {
+            Toast.makeText(this, "Konfirmasi password tidak cocok", Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        if (email.endsWith("@etsi.com")) {
+            String key = FirebaseHelper.dbKreator.push().getKey();
+            Kreator kreator = new Kreator(key, name, email, md5(password));
+            kreator.setKey(key);
+            PreferencesHelper.setUserRole(this, PreferencesHelper.USER_ROLE_KREATOR);
+            PreferencesHelper.setUserFirebaseKey(this, key);
+            FirebaseHelper.dbKreator.child(key).setValue(kreator);
+        } else {
+            String key = FirebaseHelper.dbSobat.push().getKey();
+            Sobat sobat = new Sobat(key, name, email, md5(password));
+            sobat.setKey(key);
+            PreferencesHelper.setUserRole(this, PreferencesHelper.USER_ROLE_SOBAT);
+            PreferencesHelper.setUserFirebaseKey(this, key);
+            FirebaseHelper.dbSobat.child(key).setValue(sobat);
+        }
+        startActivity(new Intent(this, MainActivity.class));
+    }
+
+    // switch between login and register
+    public void switchAction(View view) {
+        isLoginView = !isLoginView;
+        if (isLoginView) {
+            switchToLogin();
+        } else {
+            switchToRegister();
+        }
+    }
+
+    private void switchToLogin() {
+        TransitionManager.beginDelayedTransition(authContainer);
+        nameEditText.setVisibility(View.GONE);
+        confirmEditText.setVisibility(View.GONE);
+        loginButton.setVisibility(View.VISIBLE);
+        registerButton.setVisibility(View.GONE);
+        switchTextView.setText(getString(R.string.register));
+    }
+
+    private void switchToRegister() {
+        TransitionManager.beginDelayedTransition(authContainer);
+        nameEditText.setVisibility(View.VISIBLE);
+        confirmEditText.setVisibility(View.VISIBLE);
+        loginButton.setVisibility(View.GONE);
+        registerButton.setVisibility(View.VISIBLE);
+        switchTextView.setText(getString(R.string.login));
+    }
+}
\ No newline at end of file

android/app/src/main/java/com/chatman/helper/FirebaseHelper.java

+package com.chatman.helper;
+
+import com.google.firebase.database.DatabaseReference;
+import com.google.firebase.database.FirebaseDatabase;
+
+public class FirebaseHelper {
+
+    private static final String DB_USER = "user";
+
+    public static String USER_KEY, USER_EMAIL, USER_NAMA, USER_PASSWORD;
+    private static DatabaseReference reference = FirebaseDatabase.getInstance().getReference();
+    public static final DatabaseReference dbUser = reference.child(DB_USER);
+}

android/app/src/main/java/com/chatman/helper/PreferencesHelper.java

+package com.etsi.helper;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.preference.PreferenceManager;
+
+public class PreferencesHelper {
+
+    private static final String USER_ROLE_KEY = "user_role_key";
+    public static final boolean USER_ROLE_KREATOR = true;
+    public static final boolean USER_ROLE_SOBAT = false;
+    public static final String USER_FIREBASE_KEY = "user_firebase_key";
+    public static final String KREATOR1_TIER_KEY = "kreator1_tier_key";
+    public static final String KREATOR2_TIER_KEY = "kreator2_tier_key";
+    public static String CURRENT_KREATOR_KEY;
+
+    private static void setBooleanPreferences(Context context, String key, boolean value) {
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
+        SharedPreferences.Editor editor = preferences.edit();
+        editor.putBoolean(key, value);
+        editor.apply();
+    }
+
+    private static boolean getBooleanPreferences(Context context, String key) {
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
+        return preferences.getBoolean(key, false);
+    }
+
+    private static void setStringPreferences(Context context, String key, String value) {
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
+        SharedPreferences.Editor editor = preferences.edit();
+        editor.putString(key, value);
+        editor.apply();
+    }
+
+    private static String getStringPreferences(Context context, String key) {
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
+        return preferences.getString(key, "");
+    }
+
+    private static void setIntPreferences(Context context, String key, int value) {
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
+        SharedPreferences.Editor editor = preferences.edit();
+        editor.putInt(key, value);
+        editor.apply();
+    }
+
+    private static int getIntPreferences(Context context, String key) {
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
+        return preferences.getInt(key, 0);
+    }
+
+    public static void setUserRole(Context context, boolean value) {
+        setBooleanPreferences(context, USER_ROLE_KEY, value);
+    }
+
+    public static boolean getUserRole(Context context) {
+        return getBooleanPreferences(context, USER_ROLE_KEY);
+    }
+
+    public static void setUserFirebaseKey(Context context, String value) {
+        setStringPreferences(context, USER_FIREBASE_KEY, value);
+    }
+
+    public static String getUserFirebaseKey(Context context) {
+        return getStringPreferences(context, USER_FIREBASE_KEY);
+    }
+
+    public static void setKreator1TierKey(Context context, int value){
+        setIntPreferences(context, KREATOR1_TIER_KEY, value);
+    }
+
+    public static int getKreator1TierKey(Context context){
+        return getIntPreferences(context, KREATOR1_TIER_KEY);
+    }
+
+    public static void setKreator2TierKey(Context context, int value){
+        setIntPreferences(context, KREATOR2_TIER_KEY, value);
+    }
+
+    public static int getKreator2TierKey(Context context){
+        return getIntPreferences(context, KREATOR2_TIER_KEY);
+    }
+
+
+    public static String getCurrentKreatorKey() {
+        return CURRENT_KREATOR_KEY;
+    }
+
+    public static void setCurrentKreatorKey(String value) {
+       CURRENT_KREATOR_KEY = value;
+    }
+}

android/app/src/main/java/com/chatman/model/User.java

+package com.chatman.model;
+
+public class User {
+}

android/app/src/main/res/drawable/ic_arrow_back_black_24dp.xml

+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M20,11H7.83l5.59,-5.59L12,4l-8,8 8,8 1.41,-1.41L7.83,13H20v-2z"/>
+</vector>