package action;

import Bean.Book;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
import org.apache.struts2.ServletActionContext;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import java.awt.*;
import java.util.ArrayList;

public class BookAction extends ActionSupport implements ModelDriven {
	private Book books = new Book();
	private ArrayList<Book> book_list;
	public String bookkey="";
	public String deleteBookId="";
	@Override
	public Object getModel() {
		// TODO Auto-generated method stub
		return books;
	}

	public String Add() {
		try {
			if (ServletActionContext.getServletContext().getAttribute("booklist") == null) {//一本书都没有的时候
				book_list = new ArrayList<Book>();
				books.setBookId(0);
				book_list.add(0, books);
				ServletActionContext.getServletContext().setAttribute("booklist", book_list);
			} else {
				book_list = (ArrayList<Book>) ServletActionContext.getServletContext().getAttribute("booklist");
				books.setBookId(book_list.size());
//				String statecode=check(books);
//				if (statecode!=null){//不合法,阻断操作
//					addActionMessage(statecode);
//
//
//					//弹回书籍信息
//					HttpServletRequest request=ServletActionContext.getRequest();
//					request.setAttribute("errbook", books);
//					return "input";
//				}

				book_list.add(book_list.size(), books);
				System.out.print("图书:"+books.getBookName()+"\n"+books.getAuthor()+"\n"+books.getImage()+"\n"+books.getPrice());
				ServletActionContext.getServletContext().setAttribute("booklist", book_list);
			}
			return SUCCESS;
		} catch (Exception exp) {
			System.out.print(exp.getCause());
			return ERROR;
		}

	}
	private String check(Book book){//检查信息并返回错误信息
		String result="";
		if (book.getBookName()==null||book.getBookName().equals(""))
			result="书名不合法";


		return result;
	}

	public String getBooklist() {
		try{
			book_list=(ArrayList<Book>) ServletActionContext.getServletContext().getAttribute("booklist");
			ServletActionContext.getRequest().setAttribute("bookdata", book_list);
		return "selected";}
		catch (Exception e){
			return "error";
		}
	}

	public void setBook_list(ArrayList<Book> book_list) {
		this.book_list = book_list;
	}

	public String Edit() {
		try {
			return SUCCESS;
		} catch (Exception exp) {
			return ERROR;
		}
	}


public String delete(){
		System.out.print("需要删除的书的信息如下"+deleteBookId);
		book_list=(ArrayList<Book>) ServletActionContext.getServletContext().getAttribute("booklist");
		ArrayList<Book> newbook_list=new ArrayList<>();
	for (Book i:book_list) {
	    if (!deleteBookId.equals(""+i.getBookId())){
	        newbook_list.add(i);
        }
		System.out.print("书名"+i.getBookName());
	}
    ServletActionContext.getServletContext().setAttribute("booklist", newbook_list);
		return "deletesuccess";
}

	public void setBookkey(String bookkey) {
		this.bookkey = bookkey;
	}

}