package com.qrsx.exam.struts.action;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import com.qrsx.exam.dao.DAOFactory;
import com.qrsx.exam.dao.TestPaperDAO;
import com.qrsx.exam.dao.YesNoQuestionDAO;
import com.qrsx.exam.model.TestPaper;
import com.qrsx.exam.model.YesNoQuestion;
import com.qrsx.exam.struts.form.YesnoQuestionForm;
import com.qrsx.exam.util.BeanUtils;

/**
 * The Action about test Question
 * 
 * @struts.action name="yesnoQuestionForm" path="/exam/yesnoquestion"
 *                scope="request" input="/exam/question_list.jsp"
 *                validate="false" parameter="p"
 * 
 * @struts.action-forward name="add" path="/exam/yesnoquestion_add.jsp"
 * 
 * @struts.action-forward name="update" path="/exam/yesnoquestion_update.jsp"
 * 
 */
public class YesNoQuestionAction extends QuestionAction {
    /**
     * 判斷題保存功能的實現
     */
    public ActionForward add(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws IOException, ServletException {
        // 得到用戶提交的參數
        YesNoQuestion yesno = BeanUtils.copyProperties(new YesNoQuestion(),
                form);

        // 得到試卷對象
        String paperid = request.getParameter("paperid");
        TestPaperDAO paperdao = DAOFactory.getDao(TestPaperDAO.class);
        TestPaper paper = paperdao.findById(paperid, false);

        // 保存判斷題信息
        yesno.setTestpaper(paper);
        paper.getYesnoquestions().add(yesno);

        addMessage(request, "yesnoQuestion.add.success");

        // 清空Form中的數據
        YesnoQuestionForm yesnoForm = (YesnoQuestionForm) form;
        yesnoForm.setTitle(null);
        yesnoForm.setAnswer(null);
        yesnoForm.setScore(null);

        // 返回判斷題錄入頁面
        return addin(mapping, form, request, response);
    }

    /**
     * 進入判斷題修改頁面
     */
    public ActionForward updatein(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws IOException, ServletException {
        // 得到用戶提交的參數
        YesnoQuestionForm yesnoform = (YesnoQuestionForm) form;

        // 取得判斷題的信息
        YesNoQuestionDAO dao = DAOFactory.getDao(YesNoQuestionDAO.class);
        YesNoQuestion question = dao.findById(yesnoform.getId(), false);
        request.setAttribute("question", question);
        request.setAttribute("paper", question.getTestpaper());

        // 跳轉到判斷題的修改頁面
        return mapping.findForward("update");
    }

    /**
     * 判斷題的保存功能
     */
    public ActionForward save(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws IOException, ServletException {
        // 得到用戶提交的參數
        YesnoQuestionForm yesnoform = (YesnoQuestionForm) form;

        // 得到持久態的判斷題對象
        YesNoQuestionDAO dao = DAOFactory.getDao(YesNoQuestionDAO.class);
        YesNoQuestion question = dao.findById(yesnoform.getId(), false);

        // 保存用戶提交的參數
        question = BeanUtils.copyProperties(question, form);

        addMessage(request, "yesnoQuestion.update.success");

        // 返回試題列表頁面
        return list(question.getTestpaper().getId(), mapping, request);
    }

    /**
     * 判斷題刪除功能
     */
    public ActionForward delete(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws IOException, ServletException {
        // 得到用戶提交的參數
        YesnoQuestionForm yesnoform = (YesnoQuestionForm) form;

        // 刪除判斷題對象
        YesNoQuestionDAO dao = DAOFactory.getDao(YesNoQuestionDAO.class);
        YesNoQuestion question = dao.findById(yesnoform.getId(), false);
        TestPaper paper = question.getTestpaper();
        paper.getYesnoquestions().remove(question);
        dao.makeTransient(question);

        addMessage(request, "yesnoQuestion.delete.success");

        // 返回判斷題列表頁面
        return list(paper.getId(), mapping, request);
    }
}