ClsUser
-------------
/**
 * Created by ayalfarhat on 3/14/18.
 */

public class ClsUser {

    String _id,password,role;

    public ClsUser() {
    }

    public ClsUser(String _id, String password) {
        this._id = _id;
        this.password = password;
    }
}
DonateActivity(login)
------------
package com.example.ayalfarhat.mytestibmapp2;

import android.annotation.SuppressLint;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.cloudant.client.api.ClientBuilder;
import com.cloudant.client.api.CloudantClient;
import com.cloudant.client.api.Database;

import java.util.List;


public class DonateActivity extends AppCompatActivity {

    //calling user table with correct info
    final String TEXT_API_KEY = "illednensadstublantoompa";

    final String TEXT_API_SECRET = "be61a9e14653f5deb88affac3dc255094e5a90ae";

    final String DB_USER_NAME = "4345d22e-d754-4ad3-8e8a-cf5f0a18158b-bluemix";

    Button btn_login, btnRegDon;
    final String DB_NAME_TEXT = "users";

    EditText input_email, input_password;
    Context context;

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

        setPointer();
    }

    private void setPointer() {

        this.context = this;

        input_email = findViewById(R.id.input_email);
        input_password = findViewById(R.id.input_password);

        btn_login = findViewById(R.id.btn_login);
        btn_login.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String uName = input_email.getText().toString();
                String uPass = input_password.getText().toString();

                Log.e("onClick Login", "Check user");
                checkUser(uName, uPass);
            }
        });

        btnRegDon = findViewById(R.id.btnRegDon);
        btnRegDon.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                openRegDonateActivity();
            }
        });

    }

    @SuppressLint("StaticFieldLeak")
    private void checkUser(final String uName, final String uPass) {
        final ProgressDialog pd = new ProgressDialog(context);
        pd.setTitle("מאמת נתונים....");
        pd.show();

        Log.e("going to async", "now");

        new AsyncTask<Void, Void, Boolean>() {
            @Override
            protected Boolean doInBackground(Void... voids) {

                CloudantClient client = ClientBuilder.account(DB_USER_NAME)
                        .username(TEXT_API_KEY)
                        .password(TEXT_API_SECRET)
                        .build();

                Database db = client.database(DB_NAME_TEXT, false);

                Log.e("in asynctask", "creating json string");

                String myJson = "{\n" +
                        "   \"selector\": {\n" +
                        "      \"_id\": \"" + uName + "\",\n" +
                        "      \"password\": \"" + uPass + "\"\n" +
                        "   }\n" +
                        "}";

                List<UserCls> test = db.findByIndex(myJson, UserCls.class);

                Log.e("data sent", "now we wait");

                //we check the username and userpass exist and match
                if (test.isEmpty()) {
                    return false;
                }

                /*
                //we start a new activity which depends on the "role" field
                String role = test.get(0).role;
                Log.e("not empty", "starting new activity, role is " + role);

                if (role.equals("donor")) {
                    Log.e("start  the role", "role is " + role);
                    Intent myIntent = new Intent(context, DonateActivity.class);
                    startActivity(myIntent);
                } else if (role.equals("runner")) {
                    //todo: create runner activity somewhere and start it here
                    // in the meantime we just use toast

                    Log.e("connection", "connect runner, role is " + role);
                } else if (role.equals("clerk")) {

                    Log.e("connection", "connect clerk, role is " + role);
                }

                */
                return true;

            }

            @Override
            protected void onPostExecute(Boolean aBoolean) {
                pd.dismiss();
                if (!aBoolean) //if the doInBackground returned false, that is if the List was empty (because there is no username with that password)
                {
                    Log.e("test is empty", "no match");
                    Toast.makeText(context, "Username or password incorrect", Toast.LENGTH_SHORT).show();
                }
                Intent intent = new Intent(context,DonorActivity1.class);
                startActivity(intent);
            }

            //return null;
        }.execute();
    }


    private void openRegDonateActivity() {

        Intent intentAbout = new Intent(this, RegDonate.class);
        startActivity(intentAbout);
    }
}
DonorCls
-----------
/**
 * Created by ayalfarhat on 3/14/18.
 */

public class DonorCls {
    String _id, password, role;
    String uAddress, uMail, uMobile;

    public DonorCls(String _id, String password, String uAddress, String uMail, String uMobile) {
        this._id = _id;
        this.password = password;
        this.uAddress = uAddress;
        this.uMail = uMail;
        this.uMobile = uMobile;
        this.role = "donor";
    }
}
RegDonate (Regster)
------------
package com.example.ayalfarhat.mytestibmapp2;


import android.annotation.SuppressLint;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.cloudant.client.api.ClientBuilder;
import com.cloudant.client.api.CloudantClient;
import com.cloudant.client.api.Database;

import java.util.List;


public class RegDonate extends AppCompatActivity {

    //final for getting access to users table.
    final String TEXT_API_KEY = "illednensadstublantoompa";
    final String TEXT_API_SECRET = "be61a9e14653f5deb88affac3dc255094e5a90ae";
    final String DB_USER_NAME = "4345d22e-d754-4ad3-8e8a-cf5f0a18158b-bluemix";
    final String DB_NAME_TEXT = "users";

    EditText userName, input_address, input_email, input_mobile, userPass1, userPass2;
    Button btnRegister, btnLoginBack;
    Context context;

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

    private void setPointer() {
        this.context = this;
        userName = findViewById(R.id.userName);
        input_address = findViewById(R.id.input_address);
        input_email = findViewById(R.id.input_email);
        input_mobile = findViewById(R.id.input_mobile);
        userPass1 = findViewById(R.id.userPass1);
        userPass2 = findViewById(R.id.userPass2);

        btnLoginBack = findViewById(R.id.btnLoginBack);
        btnLoginBack.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                goBack();

            }
        });

        btnRegister = findViewById(R.id.btnRegister);
        btnRegister.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                checkPass();
            }
        });
    }

    private void checkPass() {
        //if passwords do not match
        if (!userPass1.getText().toString().equals(userPass2.getText().toString())) {
            Toast.makeText(context, "Passwords do not match", Toast.LENGTH_LONG).show();
            userPass1.setText("");
            userPass2.setText("");
        }

        //then we check if username is unique; if it is, this function will register him/her
        Log.e("onclickRegister", "find if username exists");
        userNameExists(userName.getText().toString());
    }


    private void goBack() {
        Intent backIntent = new Intent(this, DonateActivity.class);
        startActivity(backIntent);
    }

    //todo if does not work - change void to boolean
    @SuppressLint("StaticFieldLeak")
    private boolean userNameExists(final String s) { //s = userName


        Log.e("in userNameExists", "check in database");

        new AsyncTask<Void, Void, Boolean>() {

            @Override
            protected Boolean doInBackground(Void... voids) {
                CloudantClient client = ClientBuilder.account(DB_USER_NAME)
                        .username(TEXT_API_KEY)
                        .password(TEXT_API_SECRET)
                        .build();

                Database db = client.database(DB_NAME_TEXT, false);

                if (db.contains(s))  { //s = userName
                    return true;
                }

                return false;

            }

            @Override
            protected void onPostExecute(Boolean aVoid) { //if true = username exists, toast a message.
                if (aVoid) {
                    Toast.makeText(context, "Username is taken, try another one", Toast.LENGTH_LONG).show();
                } else {
                    //register user, and start a new intent
                    Toast.makeText(context, "You are now registered", Toast.LENGTH_LONG).show();
                    registerUser(s, userPass1.getText().toString(), input_address.getText().toString(),
                            input_email.getText().toString(),
                            input_mobile.getText().toString());
                }
            }
        }.execute();
        return true;
    }

    @SuppressLint("StaticFieldLeak")
    private void registerUser(final String uName, final String uPass, final String uAddress, final String uMail, final String uMobile) {

        new AsyncTask<Void, Void, Void>() {

            @Override
            protected Void doInBackground(Void... voids) {
                CloudantClient client = ClientBuilder.account(DB_USER_NAME)
                        .username(TEXT_API_KEY)
                        .password(TEXT_API_SECRET)
                        .build();

                //return database.toString();
                Database db = client.database(DB_NAME_TEXT, false);

                //a java type that can be serialized to json
                DonorCls newDonor = new DonorCls(uName, uPass, uAddress, uMail, uMobile);
                db.save(newDonor);
                Log.e("newDonorRegisterUser", "doInBackGround: new donor was saved in database");

                //todo:check if this is the right place to put that line, if not then in onPostExecute
                registerDonor(uName, uPass, uAddress, uMail, uMobile);


                return null;
            }

            @Override
            protected void onPostExecute(Void aVoid) {
                Toast.makeText(context, "You were registered", Toast.LENGTH_SHORT).show();
                Intent intent = new Intent(context, DonorActivity1.class);
                startActivity(intent);
            }
        }.execute();
    }


    //now save details in "donor" database
    @SuppressLint("StaticFieldLeak")
    private void registerDonor(final String uName, final String uPass, final String uAddress, final String uMail, final String uMobile) {
        final String TEXT_API_KEY = "heyetonithorefurestureds";
        final String TEXT_API_SECRET = "a9ae36badadeede43ad0defda75f545801013ab9";
        final String DB_USER_NAME = "4345d22e-d754-4ad3-8e8a-cf5f0a18158b-bluemix";
        final String DB_NAME_TEXT = "donor";

        new AsyncTask<Void, Void, Void>() {
            @Override
            protected Void doInBackground(Void... voids) {

                CloudantClient client = ClientBuilder.account(DB_USER_NAME)
                        .username(TEXT_API_KEY)
                        .password(TEXT_API_SECRET)
                        .build();

                //return database.toString();
                Database db = client.database(DB_NAME_TEXT, false);

                // A Java type that can be serialized to JSON
                DonorCls newDonor = new DonorCls(uName, uPass, uAddress, uMail, uMobile);
                db.save(newDonor);
                Log.e("newRegisterDonor", "doInBackground: cloudant data was saves..");


                return null;
            }
        }.execute();
    }
}





   /* @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_reg_donate);

    }
}
*/

/*
    EditText userName, userPass1, userPass2,input_address,input_email,input_mobile;
    Button btnRegister;
    Context context;



    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_reg_donate);
        setPointer();
    }

    private void setPointer() {
        this.context=this;

        userName = findViewById(R.id.userName1);
        userPass1 = findViewById(R.id.userPass1);
        userPass2 = findViewById(R.id.userPass2);
        btnRegister = findViewById(R.id.btnRegister);
        input_address = findViewById(R.id.input_address);
        input_email = findViewById(R.id.input_email);
        input_mobile = findViewById(R.id.input_mobile);

        btnRegister.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (!userPass1.getText().toString().equals(userPass2.getText().toString())) {
                    //if passwords dont match
                    Toast.makeText(context, "Passwords don't match", Toast.LENGTH_SHORT).show();
                    userPass1.setText("");
                    userPass2.setText("");
                }
                else
                {
                    //then we check if the username is unique and if it is this function will register him
                    Log.e("onclickregister","going to find username");
                    userNameExists(userName.getText().toString());
                }



            }
        });
    }

    @SuppressLint("StaticFieldLeak")
    private boolean userNameExists(final String s) {

        final String TEXT_API_KEY = "heyetonithorefurestureds";
        final String TEXT_API_SECRET = "a9ae36badadeede43ad0defda75f545801013ab9";
        final String DB_USER_NAME = "4345d22e-d754-4ad3-8e8a-cf5f0a18158b-bluemix";
        final String DB_NAME_TEXT = "donor";

        Log.e("in userNAmeexist","going to database");

        new AsyncTask<Void, Void, Boolean>() {

            @Override
            protected Boolean doInBackground(Void... voids) {
                CloudantClient client = ClientBuilder.account(DB_USER_NAME)
                        .username(TEXT_API_KEY)
                        .password(TEXT_API_SECRET)
                        .build();

                Database db = client.database(DB_NAME_TEXT, false);


                if(db.contains(s))
                    return true;

                return false;



            }

            @Override
            protected void onPostExecute(Boolean aVoid) {
                if (aVoid)
                {
                    Toast.makeText(context, "Username already taken, try something else", Toast.LENGTH_SHORT).show();
                }
                else
                {
                    //register user and start new intent
                    Toast.makeText(context, "congrats!", Toast.LENGTH_SHORT).show();

                    registerUser(s,userPass1.getText().toString(),s,userPass2.getText().toString(),);
                }


            }
        }.execute();

        return true;

    }

    @SuppressLint("StaticFieldLeak")
    public void registerUser(final String uName, final String uPass, final String address, final String email, final String phone)
    {
        final String TEXT_API_KEY = "heyetonithorefurestureds";
        final String TEXT_API_SECRET = "a9ae36badadeede43ad0defda75f545801013ab9";
        final String DB_USER_NAME = "4345d22e-d754-4ad3-8e8a-cf5f0a18158b-bluemix";
        final String DB_NAME_TEXT = "donor";
        new AsyncTask<Void, Void, Void>() {

            @Override
            protected Void doInBackground(Void... voids) {
                CloudantClient client = ClientBuilder.account(DB_USER_NAME)
                        .username(TEXT_API_KEY)
                        .password(TEXT_API_SECRET)
                        .build();

                //return databases.toString();
                Database db = client.database(DB_NAME_TEXT, false);
                // A Java type that can be serialized to JSON

                RegDonate newDonor = new RegDonate(uName,uPass, address, email, phone);
                db.save(newDonor);
                Log.e("TAG", "doInBackground: cloudant data was saved.... " );
                return null;
            }

            @Override
            protected void onPostExecute(Void aVoid) {
                Toast.makeText(context, "You were registered", Toast.LENGTH_SHORT).show();
                //now starting the new activity
                Intent myIntent = new Intent(context,DonorActivity1.class);
                startActivity(myIntent);

            }
        }.execute();


    }
}
*/