package org.springframework.web.portlet.sample;

import java.text.SimpleDateFormat;
import java.util.Date;

import javax.portlet.ActionRequest;
import javax.portlet.ActionResponse;
import javax.portlet.PortletRequest;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;

import org.springframework.beans.propertyeditors.CustomDateEditor;
import org.springframework.validation.BindException;
import org.springframework.validation.Errors;
import org.springframework.web.portlet.bind.PortletRequestDataBinder;
import org.springframework.web.portlet.mvc.AbstractWizardFormController;
import org.springframework.web.portlet.ModelAndView;

class BookAddController extends AbstractWizardFormController {

    private BookService bookService;
   
    public void afterPropertiesSet() throws Exception {
        if (this.bookService == null)
            throw new IllegalArgumentException("A BookService is required");
    }

    protected void processFinish(
            ActionRequest request, ActionResponse response,
            Object command, BindException errors)
            throws Exception {
        bookService.addBook((Book)command);
        response.setRenderParameter("action","books");
    }

    protected void processCancel(
            ActionRequest request, ActionResponse response,
            Object command, BindException errors)
            throws Exception {
        response.setRenderParameter("action","books");
    }

    protected void validatePage(
            Object command, Errors errors, int page, boolean finish) {
        if (finish) {
            this.getValidator().validate(command, errors);
            return;
        }
        Book book = (Book)command;
        BookValidator bookValidator = (BookValidator)getValidator();
        //errors.setNestedPath("book");
        switch (page) {
            case 0: bookValidator.validateAuthor(book, errors);    break;
            case 1: bookValidator.validateTitle(book, errors); break;
            case 2: bookValidator.validateDescription(book, errors); break;
            case 3: bookValidator.validateAvailability(book, errors); break;
            case 4: bookValidator.validateCount(book, errors); break;
        }
        //errors.setNestedPath("");
    }

    protected void initBinder(PortletRequest request, PortletRequestDataBinder binder)
            throws Exception {
        SimpleDateFormat dateFormat = new SimpleDateFormat("MM/dd/yyyy");
        binder.registerCustomEditor(Date.class, null, new    CustomDateEditor(dateFormat, true));
        binder.setAllowedFields(new String[] {"author","title","description","availability","count"});
    }

    protected ModelAndView renderInvalidSubmit(RenderRequest request, RenderResponse response)
            throws Exception {
        return null;
    }

    protected void handleInvalidSubmit(ActionRequest request, ActionResponse response)
            throws Exception {
        response.setRenderParameter("action","books");
    }

    public void setBookService(BookService bookService) {
        this.bookService = bookService;
    }

}