package com.javaniu.controller;

import java.io.IOException;
import java.util.List;

import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.commons.CommonsMultipartFile;
import org.springframework.web.servlet.ModelAndView;

import com.javaniu.dao.FileDao;
import com.javaniu.dao.UserDao;
import com.javaniu.module.File;
import com.javaniu.module.User;

@Controller
@RequestMapping({ "/file" })
public class FileController {

	Logger logger = Logger.getLogger(FileController.class);

	@Autowired
	public HttpSession session;
	@Autowired
	public UserDao userDao;
	@Autowired
	public FileDao fileDao;
	private @Value("${deploy.path}")
	String deployPath;

	@RequestMapping(value = { "" }, method = { RequestMethod.GET })
	public ModelAndView index(
			@RequestParam(value = "p", required = false, defaultValue = "1") int p) {
		ModelAndView modelAndView = new ModelAndView("file/index");
		int ps = 2;
		List<File> files = fileDao.loadAll(p, ps);
		modelAndView.addObject("files", files);
		int total = fileDao.countAll();
		int pageTotal = (total / ps) + (total % ps > 0 ? 1 : 0);
		modelAndView.addObject("pageTotal", pageTotal);
		modelAndView.addObject("p", p);
		return modelAndView;
	}

	@RequestMapping(value = { "create" }, method = { RequestMethod.GET })
	public ModelAndView create(HttpServletResponse response) throws IOException {
		ModelAndView modelAndView = new ModelAndView("file/create");
		User user = (User) session.getAttribute("sessionUser");
		if (user == null) {
			response.sendRedirect("/user/login.action");
			return null;
		}
		File file = new File();
		modelAndView.addObject("file", file);
		return modelAndView;
	}

	@RequestMapping(value = { "create" }, method = { RequestMethod.POST })
	public void create(@ModelAttribute("file") File file,
			HttpServletResponse response) throws Exception {
		User user = (User) session.getAttribute("sessionUser");
		if (user == null) {
			response.sendRedirect("/user/login.action");
			return;
		}
		CommonsMultipartFile commonFile = file.getFile();
		java.io.File deployDir = new java.io.File(deployPath);
		if (!deployDir.exists()) {
			deployDir.mkdirs();
		}
		file.setFileName(commonFile.getOriginalFilename());
		file.setUser(user);
		file.setFileSize(commonFile.getSize());
		String dst = deployPath + commonFile.getOriginalFilename();
		commonFile.transferTo(new java.io.File(dst));
		fileDao.save(file);
		response.sendRedirect("/file.action");
	}

	@RequestMapping(value = { "{id}" }, method = { RequestMethod.GET })
	public ModelAndView file(@PathVariable("id") Long id,
			HttpServletResponse response) throws IOException {
		ModelAndView modelAndView = new ModelAndView("file/file");
		File file = fileDao.findById(id);
		modelAndView.addObject("file", file);
		return modelAndView;
	}
}