Курсач технологии программированияV2

listView.setOnItemClickListener((parent, view, position, id) -> { CartItem cartItem = cartItems.get(position); cartItem.setSelected(!cartItem.isSelected()); cartAdapter.notifyDataSetChanged();

}); try {

SQL_Controller sql_con = new SQL_Controller(); Connection connection = sql_con.connectionClass();

String sqlStatement = "SELECT m.NAME, m.PRICE, c.QUANTITY FROM dbo.cart_table c JOIN dbo.menu_table m ON c.POSITION_ID = m.ID WHERE c.USER_ID = ?";

PreparedStatement ps = connection.prepareStatement(sqlStatement); ps.setString(1, String.valueOf(userId));

ResultSet set = ps.executeQuery(); while (set.next()) {

String name = set.getString("NAME"); int price = set.getInt("PRICE");

int quantity = set.getInt("QUANTITY"); cartItems.add(new CartItem(name, price, quantity));

}

set.close();

ps.close();

connection.close();

cartAdapter.notifyDataSetChanged();

}catch (Exception e) { Log.e("Error: ", e.getMessage());

}

Button orderSubmit = findViewById(R.id.orderButton); orderSubmit.setOnClickListener(view -> {

ArrayList<CartItem> selectedItems = new ArrayList<>(); for (CartItem item : cartItems) {

if (item.isSelected()) { selectedItems.add(item);

}

}

int totalPrice = 0;

for (CartItem item : selectedItems) {

totalPrice += item.getPrice() * item.getQuantity();

}

String address = "User's address"; saveOrderToServer(userId, totalPrice, address);

Intent intent = new Intent(CartActivity.this, OrderActivity.class); intent.putExtra("selectedItems", selectedItems); intent.putExtra("totalPrice", totalPrice); intent.putExtra("address", address);

startActivity(intent);

});

}

private void saveOrderToServer(int userId, int totalPrice, String address) { try {

SQL_Controller sql_con = new SQL_Controller(); Connection connection = sql_con.connectionClass();

String sqlStatement = "INSERT INTO dbo.order_table (USER_ID, ORDER_STATUS, ORDER_ADDRESS, TOTAL_PRICE, ORDER_DATE) VALUES (?, ?, ?, ?, GETDATE())";

PreparedStatement ps = connection.prepareStatement(sqlStatement); ps.setInt(1, userId);

ps.setString(2, "Pending"); // You can set the initial order status here ps.setString(3, address);

ps.setInt(4, totalPrice); ps.executeUpdate();

ps.close();

connection.close(); } catch (Exception e) {

Log.e("Error: ", e.getMessage());

}

}

}

package com.example.fooddeliveryapp1; import android.os.Bundle;

import android.support.annotation.Nullable;

import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView;

import android.widget.TextView; import java.util.ArrayList;

public class OrderActivity extends AppCompatActivity { @Override

protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_order_page);

ArrayList<CartItem> selectedItems = (ArrayList<CartItem>) getIntent().getSerializableExtra("selectedItems"); int totalPrice = getIntent().getIntExtra("totalPrice", 0);

String address = getIntent().getStringExtra("address");

TextView totalPriceTextView = findViewById(R.id.totalPriceTextView); totalPriceTextView.setText("Стоимость: " + totalPrice+" руб.");

TextView addressTextView = findViewById(R.id.addressTextView); addressTextView.setText("Адрес доставки: " + address);

RecyclerView recyclerView = findViewById(R.id.itemsRecyclerView); recyclerView.setLayoutManager(new LinearLayoutManager(this)); OrderAdapter adapter = new OrderAdapter(selectedItems); recyclerView.setAdapter(adapter);

}

}

package com.example.fooddeliveryapp1; import android.content.SharedPreferences; import android.os.Bundle;

import android.support.v7.app.AppCompatActivity; import android.util.Log;

import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.TextView; import android.widget.Toast;

import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet;

import java.sql.Statement; import java.util.ArrayList;

public class PositionInfo extends AppCompatActivity { Connection connection;

@Override

protected void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.activity_position_info);

SharedPreferences settings = getSharedPreferences(LoginActivity.PREFS_NAME, 0); int userId = settings.getInt(LoginActivity.USER_ID_KEY, -1);

TextView nameTextView = findViewById(R.id.nameText);

TextView descriptionTextView = findViewById(R.id.descriptionText); TextView priceTextView = findViewById(R.id.priceText);

Button buttonOrder = findViewById(R.id.addToOrder);

String selectedItemName = getIntent().getStringExtra("selected_item_name");

String selectedItemDescription = getIntent().getStringExtra("selected_item_description"); String selectedItemPrice = getIntent().getStringExtra("selected_item_price");

String selectedItemId = getIntent().getStringExtra("selected_item_id"); nameTextView.setText(selectedItemName); descriptionTextView.setText(selectedItemDescription); priceTextView.setText(selectedItemPrice); buttonOrder.setOnClickListener(view -> {

SQL_Controller sql_con = new SQL_Controller(); connection = sql_con.connectionClass();

try {

String sqlStatement = "Insert into [deliveryDB].[dbo].[cart_table] (POSITION_ID, USER_ID, QUANTITY) VALUES (?,?,?)";

PreparedStatement ps = connection.prepareStatement(sqlStatement); ps.setString(1, selectedItemId);

ps.setString(2, String.valueOf(userId)); ps.setString(3, "1"); ps.executeUpdate();

Toast.makeText(this, "Успешно добавлено", Toast.LENGTH_SHORT).show();

}catch (Exception e) { Log.e("Error: ", e.getMessage());

}

});

}

}

package com.example.fooddeliveryapp1; import android.os.Bundle;

import android.support.v7.app.AppCompatActivity; import android.util.Log;

import android.widget.Button; import android.widget.EditText; import android.widget.Toast; import java.sql.Connection; import java.sql.PreparedStatement;

public class AdminMainActivity extends AppCompatActivity { Connection connection;

@Override

protected void onCreate( Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_admin_main); SQL_Controller sql_con = new SQL_Controller(); connection = sql_con.connectionClass();

EditText editName = findViewById(R.id.editTextName); EditText editPrice = findViewById(R.id.editTextPrice);

EditText editDescription = findViewById(R.id.editTextDescription); Button button = findViewById(R.id.addButton); button.setOnClickListener(view -> {

if (editName.toString().isEmpty()){

Toast.makeText(AdminMainActivity.this, "Ошибка занесения в базу данных",

Toast.LENGTH_SHORT).show();

}

else {

String Price = editPrice.getText().toString(); String Name = editName.getText().toString();

String Description = editDescription.getText().toString(); try {

String sqlStatement = "Insert into [deliveryDB].[dbo].[menu_table] (NAME, PRICE, DESCRIPTION) VALUES (?,?,?)";

PreparedStatement ps = connection.prepareStatement(sqlStatement); ps.setString(1, Name);

ps.setString(2, Price); ps.setString(3, Description); ps.executeUpdate();

Toast.makeText(AdminMainActivity.this, "Успешно добавлено", Toast.LENGTH_SHORT).show(); connection.close();

}

catch (Exception e){

Log.e("Ошибка: ", e.getMessage());

}

}

});

}

}

package com.example.fooddeliveryapp1; import android.os.Bundle;

import android.support.v7.app.AppCompatActivity; import android.util.Log;

import android.widget.ListView; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet;

import java.sql.Statement; import java.util.ArrayList;

public class DeletePositionActivity extends AppCompatActivity { Connection connection;

@Override

protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_delete_pos); ListView listView = findViewById(R.id.pos_list); SQL_Controller sql_con = new SQL_Controller(); connection = sql_con.connectionClass();

try {

String sqlStatement = "Select * from [deliveryDB].[dbo].[menu_table]"; Statement smt = connection.createStatement();

ResultSet set = smt.executeQuery(sqlStatement); ArrayList<String> list = new ArrayList<>(); while (set.next()) {

String str = set.getString("NAME"); list.add(str);

}

PosAdapter adapter = new PosAdapter(DeletePositionActivity.this, list); listView.setAdapter(adapter); findViewById(R.id.deleteButton).setOnClickListener(v -> {

boolean[] checked = adapter.getChecked(); try {

String sqlDelete = "DELETE FROM [deliveryDB].[dbo].[menu_table] WHERE NAME = ?"; PreparedStatement stmt = connection.prepareStatement(sqlDelete);

for (int i = 0; i < checked.length; i++) { if (checked[i]) {

stmt.setString(1, list.get(i)); stmt.addBatch();

}

}

stmt.executeBatch();

connection.close();

finish();

}catch (Exception e) { Log.e("Error: ", e.getMessage());

}

});

}catch (Exception e) { Log.e("Error: ", e.getMessage());

}

}

}