java class of the login interface.

app/src/main/java/com/example/salonappnew/login.java

+package com.example.salonappnew;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.app.ProgressDialog;
+import android.content.Intent;
+import android.content.SharedPreferences;
+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.example.salonappnew.models.UserType;
+import com.google.android.gms.tasks.OnCompleteListener;
+import com.google.android.gms.tasks.OnFailureListener;
+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.ChildEventListener;
+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.Query;
+import com.google.firebase.database.ValueEventListener;
+import com.google.firebase.firestore.DocumentReference;
+import com.google.firebase.firestore.DocumentSnapshot;
+import com.google.firebase.firestore.FirebaseFirestore;
+import com.google.firebase.firestore.QuerySnapshot;
+import com.google.firebase.firestore.Source;
+
+public class login extends AppCompatActivity {
+    private Button logBtn,btn_tmp;
+    EditText emailId,password;
+    FirebaseAuth mFirebaseAuth;
+    private DatabaseReference mFDb;
+    private FirebaseDatabase mFirebaseInstant;
+    FirebaseFirestore db = FirebaseFirestore.getInstance();
+    TextView adminLogin;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_login);
+        emailId = findViewById(R.id.editTextEmail);
+        password = findViewById(R.id.editTextPass);
+
+
+
+        mFirebaseAuth = FirebaseAuth.getInstance();
+
+//        DocumentReference docRef = db.collection("users").document("sam");
+//        Source source = Source.SERVER;
+//
+//        docRef.get(source).addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {
+//            @Override
+//            public void onComplete(@NonNull Task<DocumentSnapshot> task) {
+//                if (task.isSuccessful()) {
+//                    // Document found in the offline cache
+//                    DocumentSnapshot document = task.getResult();
+//                    Log.d("chata", "Cached document data: " + document.getData());
+//                } else {
+//                    Log.d("chata", "Cached get failed: ", task.getException());
+//                }
+//            }
+//        });
+
+
+//        FirebaseUser currentUser = mFirebaseAuth.getCurrentUser();
+
+        if(mFirebaseAuth.getCurrentUser() == null ){
+            Toast.makeText(login.this,"current user not found", Toast.LENGTH_LONG).show();
+
+        }else {
+            openNewDashboard();
+        }
+
+        logBtn = (Button) findViewById(R.id.btn_login);
+//        btn_tmp = (Button) findViewById(R.id.btn_tmp);
+
+
+
+
+        logBtn.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                fLogin();
+            }
+        });
+
+//        btn_tmp.setOnClickListener(new View.OnClickListener() {
+//            @Override
+//            public void onClick(View view) {
+//                register();
+//            }
+//        });
+
+
+
+    }
+
+    private void register() {
+        if(validatePassAndEmail()){
+            String email = emailId.getText().toString();
+            String pass = password.getText().toString();
+            Log.d("chata","email and password is okay");
+            mFirebaseAuth.createUserWithEmailAndPassword(email,pass).addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
+                @Override
+                public void onComplete(@NonNull Task<AuthResult> task) {
+                    if (task.isSuccessful()) {
+                        // Sign in success, update UI with the signed-in user's information
+                        Log.d("chata", "createUserWithEmail:success");
+                        FirebaseUser user = mFirebaseAuth.getCurrentUser();
+//                        updateUI(user);
+                    } else {
+                        // If sign in fails, display a message to the user.
+                        Log.w("chata", "createUserWithEmail:failure", task.getException());
+                        Toast.makeText(login.this, "Authentication failed.",
+                                Toast.LENGTH_SHORT).show();
+//                        updateUI(null);
+                    }
+                }
+            });
+        }
+    }
+
+
+    public boolean validatePassAndEmail(){
+        String email = emailId.getText().toString();
+        String pass = password.getText().toString();
+
+        if(email.isEmpty()){
+            emailId.setError("Please provide a email id");
+            emailId.requestFocus();
+            return false;
+        }else if(pass.isEmpty()){
+            password.setError("Please enter a password");
+            password.requestFocus();
+            return false;
+        }else{
+            return true;
+        }
+    }
+
+//    public void openAdminLogin(){
+//        Intent intent = new Intent(this, loginAdmin.class);
+//        startActivity(intent);
+//    }
+
+
+    public void fLogin(){
+
+        String email = emailId.getText().toString();
+        String pass = password.getText().toString();
+//        openNewDashboard();
+        if(validatePassAndEmail()){
+            mFirebaseAuth.signInWithEmailAndPassword(email, pass)
+                .addOnCompleteListener(new OnCompleteListener<AuthResult>() {
+                    @Override
+                    public void onComplete(@NonNull Task<AuthResult> task) {
+                        if (task.isSuccessful()) {
+                            Toast.makeText(getApplicationContext(), "Login successful!", Toast.LENGTH_LONG).show();
+//                            progressBar.setVisibility(View.GONE);
+
+//                            TODO uncomment me after
+//                            openNewDashboard();
+                            Log.d("chata","fLogin success");
+
+                            checkUserAvailability(email,pass);
+
+                        }
+                        else {
+                            Toast.makeText(getApplicationContext(), "Login failed! Please try again later", Toast.LENGTH_LONG).show();
+//                            progressBar.setVisibility(View.GONE);
+                        }
+                    }
+                });
+        }
+
+
+    }
+
+
+    public void openNewDashboard(){
+        Intent intent = new Intent(this, ADHDHome.class);
+        startActivity(intent);
+    }
+
+    public void checkUserAvailability(String email,String password){
+        Log.d("chata","in checkUserAvailability");
+        FirebaseUser user = mFirebaseAuth.getCurrentUser();
+        Log.d("chata","user id is "+user.getUid());
+
+        //check user availabiliy with firestore
+        db.collection("users").whereEqualTo("uid",user.getUid()).get()
+                .addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
+                    @Override
+                    public void onComplete(@NonNull Task<QuerySnapshot> task) {
+                        Log.d("chata","fire search done");
+                        openNewDashboard();
+                    }
+                })
+                .addOnFailureListener(new OnFailureListener() {
+                    @Override
+                    public void onFailure(@NonNull Exception e) {
+                        Log.d("chata","fire search failed");
+                    }
+                });
+
+        //if user available redirect to dashboard
+//        final ProgressDialog progressDialog = new ProgressDialog(this);
+//        progressDialog.setTitle("Checking User Availability...");
+//        progressDialog.show();
+//        Log.d("Data","Current user"+mFirebaseAuth.getCurrentUser().getEmail());
+//        Query data = mFDb.child("userType").orderByChild("email").startAt(mFirebaseAuth.getCurrentUser().getEmail().toString())
+//                .endAt(mFirebaseAuth.getCurrentUser().getEmail()+"\uf8ff");
+
+//        data.addListenerForSingleValueEvent(new ValueEventListener() {
+//            @Override
+//            public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
+//                if(dataSnapshot.exists()){
+//                    //bus number exists in Databas
+//                    Log.d("Data","Data ->"+dataSnapshot.getValue().toString());
+//
+//                    UserType userType = dataSnapshot.getValue(UserType.class);
+////
+//                    Log.d("Data","User type found -> key "+dataSnapshot.getKey());
+//                    progressDialog.dismiss();
+//                    kill_activity();
+//                    searchFireStore(mFirebaseAuth.getCurrentUser().getEmail());
+//                    Log.d("Data","Data  found");
+//                    SharedPreferences pref =getSharedPreferences("prefs",MODE_PRIVATE);
+//                    final SharedPreferences.Editor editor = pref.edit();
+//                    editor.putBoolean("loggedin",true);
+//                    editor.apply();
+//
+//                } else {
+//                    //bus number doesn't exists.
+//                    Toast.makeText(getApplicationContext(), "Login failed! Please try again later", Toast.LENGTH_LONG).show();
+////
+//                    progressDialog.dismiss();
+//                    Log.d("Data","Data not  found");
+//
+//                }
+//            }
+//
+//            @Override
+//            public void onCancelled(@NonNull DatabaseError databaseError) {
+//
+//            }
+//        });
+    }
+
+    public void openDashBoard(String type){
+//        Intent intent = new Intent(this, Dashboard.class);
+//        intent.putExtra("type", type);
+//        startActivity(intent);
+    }
+
+    public void kill_activity()
+    {
+        finish();
+    }
+
+
+    private void searchFireStore( String queryText){
+        Query data = mFDb.child("userType").orderByChild("email").startAt(queryText)
+                .endAt(queryText+"\uf8ff");
+
+
+
+        data.addChildEventListener(new ChildEventListener() {
+            @Override
+            public void onChildAdded(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {
+                System.out.println(dataSnapshot.getKey());
+
+                Log.d("Data","Data ->"+dataSnapshot.getKey());
+                Log.d("Data","Data ->"+dataSnapshot.getValue().toString());
+
+                UserType userType = dataSnapshot.getValue(UserType.class);
+
+                Log.d("Data","Data ->"+userType.getType());
+                openDashBoard(userType.getType());
+            }
+
+            @Override
+            public void onChildChanged(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {
+
+            }
+
+            @Override
+            public void onChildRemoved(@NonNull DataSnapshot dataSnapshot) {
+
+            }
+
+            @Override
+            public void onChildMoved(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {
+
+            }
+
+            @Override
+            public void onCancelled(@NonNull DatabaseError databaseError) {
+
+            }
+        });
+    }
+}
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