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import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CreateBookServlet extends HttpServlet {
    public static ArrayList<Book> books;
    public void init() throws ServletException{
        books = new ArrayList<Book>();
    }
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {
        try (PrintWriter out = response.getWriter()) {
            out.println("<!DOCTYPE html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Create Book</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet BookServlet</h1>");
            out.println("<form action=\"\" method=\"POST\">");
            out.println("<h3>Add New Book</h3>");
            out.println("<p>");
            out.println("ID : <input type=\"text\" name=\"id\">");
            out.println("</p>");
            out.println("<p>");
            out.println("TITLE : <input type=\"text\" name=\"title\">");
            out.println("</p>");
            out.println("<p>");
            out.println("PRICE : <input type=\"text\" name=\"price\">");
            out.println("</p>");
            out.println("<input type=\"submit\" value=\"ADD BOOK\">");
            out.println("</form>");
            out.println("</body>");
            out.println("</html>");
        }
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {
        int id = Integer.parseInt(request.getParameter("id"));
        String title = request.getParameter("title").toString();
        float price = Float.parseFloat(request.getParameter("price"));
        if(books.add(new Book(id,title,price))){
            try (PrintWriter out = response.getWriter()) {
                out.println("<!DOCTYPE html>");
                out.println("<html>");
                out.println("<head>");
                out.println("<title>Create Book</title>");
                out.println("</head>");
                out.println("<body>");
                out.println("<h1>Servlet BookServlet</h1>");
                out.println("<p>");
                out.println("Add Book Complete");
                out.println("</p>");
                out.println("<a href=\"./\">GO TO MENU</a>");
                out.println("</body>");
                out.println("</html>");
            }
        }else{
            try (PrintWriter out = response.getWriter()) {
                out.println("<!DOCTYPE html>");
                out.println("<html>");
                out.println("<head>");
                out.println("<title>Create Book</title>");
                out.println("</head>");
                out.println("<body>");
                out.println("<h1>Servlet BookServlet</h1>");
                out.println("<p>");
                out.println("Add Book Error");
                out.println("</p>");
                out.println("<a href=\"./\">GO TO MENU</a>");
                out.println("</body>");
                out.println("</html>");
            }
        }

    }
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}