test

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package servlets;
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import java.io.IOException;
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import java.io.PrintWriter;
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import javax.servlet.RequestDispatcher;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import com.bittercode.constant.BookStoreConstants;
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import com.bittercode.constant.ResponseCode;
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import com.bittercode.constant.db.BooksDBConstants;
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import com.bittercode.model.Book;
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import com.bittercode.model.UserRole;
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import com.bittercode.service.BookService;
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import com.bittercode.service.impl.BookServiceImpl;
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import com.bittercode.util.StoreUtil;
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public class UpdateBookServlet extends HttpServlet {
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    BookService bookService = new BookServiceImpl();
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    public void service(HttpServletRequest req, HttpServletResponse res) throws IOException, ServletException {
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        PrintWriter pw = res.getWriter();
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        res.setContentType(BookStoreConstants.CONTENT_TYPE_TEXT_HTML);
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        if (!StoreUtil.isLoggedIn(UserRole.SELLER, req.getSession())) {
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            RequestDispatcher rd = req.getRequestDispatcher("SellerLogin.html");
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            rd.include(req, res);
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            pw.println("<table class=\"tab\"><tr><td>Please Login First to Continue!!</td></tr></table>");
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            return;
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        }
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        RequestDispatcher rd = req.getRequestDispatcher("SellerHome.html");
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        rd.include(req, res);
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        StoreUtil.setActiveTab(pw, "storebooks");
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        pw.println("<div class='container my-2'>");
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        try {
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            if (req.getParameter("updateFormSubmitted") != null) {
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                String bName = req.getParameter(BooksDBConstants.COLUMN_NAME);
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                String bCode = req.getParameter(BooksDBConstants.COLUMN_BARCODE);
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                String bAuthor = req.getParameter(BooksDBConstants.COLUMN_AUTHOR);
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                double bPrice = Double.parseDouble(req.getParameter(BooksDBConstants.COLUMN_PRICE));
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                int bQty = Integer.parseInt(req.getParameter(BooksDBConstants.COLUMN_QUANTITY));
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                Book book = new Book(bCode, bName, bAuthor, bPrice, bQty);
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                String message = bookService.updateBook(book);
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                if (ResponseCode.SUCCESS.name().equalsIgnoreCase(message)) {
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                    pw.println(
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                            "<table class=\"tab\"><tr><td>Book Detail Updated Successfully!</td></tr></table>");
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                } else {
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                    pw.println("<table class=\"tab\"><tr><td>Failed to Update Book!!</td></tr></table>");
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                    // rd.include(req, res);
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                }
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                return;
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            }
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            String bookId = req.getParameter("bookId");
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            if (bookId != null) {
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                Book book = bookService.getBookById(bookId);
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                showUpdateBookForm(pw, book);
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            }
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        } catch (Exception e) {
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            e.printStackTrace();
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            pw.println("<table class=\"tab\"><tr><td>Failed to Load Book data!!</td></tr></table>");
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        }
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    }
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    private static void showUpdateBookForm(PrintWriter pw, Book book) {
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        String form = "<table class=\"tab my-5\" style=\"width:40%;\">\r\n"
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                + "        <tr>\r\n"
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                + "            <td>\r\n"
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                + "                <form action=\"updatebook\" method=\"post\">\r\n"
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                + "                    <label for=\"bookCode\">Book Code : </label><input type=\"text\" name=\"barcode\" id=\"bookCode\" placeholder=\"Enter Book Code\" value='"
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                + book.getBarcode() + "' readonly><br/>"
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                + "                    <label for=\"bookName\">Book Name : </label> <input type=\"text\" name=\"name\" id=\"bookName\" placeholder=\"Enter Book's name\" value='"
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                + book.getName() + "' required><br/>\r\n"
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                + "                    <label for=\"bookAuthor\">Book Author : </label><input type=\"text\" name=\"author\" id=\"bookAuthor\" placeholder=\"Enter Author's Name\" value='"
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                + book.getAuthor() + "' required><br/>\r\n"
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                + "                    <label for=\"bookPrice\">Book Price : </label><input type=\"number\" name=\"price\" placeholder=\"Enter the Price\" value='"
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                + book.getPrice() + "' required><br/>\r\n"
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                + "                    <label for=\"bookQuantity\">Book Qnty : </label><input type=\"number\" name=\"quantity\" id=\"bookQuantity\" placeholder=\"Enter the quantity\" value='"
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                + book.getQuantity() + "' required><br/>\r\n"
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                + "                    <input class=\"btn btn-success my-2\" type=\"submit\" name='updateFormSubmitted' value=\" Update Book \">\r\n"
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                + "                </form>\r\n"
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                + "            </td>\r\n"
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                + "        </tr>  \r\n"
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                + "    </table>";
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        pw.println(form);
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    }
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}
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