package controller;

import com.alibaba.fastjson.JSON;
import org.apache.commons.io.FilenameUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.ModelAndView;
import pojo.Dish;
import pojo.Pager;
import pojo.dish.Dishes;
import service.dish.DishService;
import tools.BillCodeUtil;
import tools.PagerTools;
import tools.RedisUtil;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

@Controller
public class DishController {
    @Autowired
    private DishService dishService;
    @Resource(name = "redisUtil")
    private RedisUtil redisUtil;

    @ResponseBody
    @RequestMapping(value = "/addDish.do", produces = "application/json;charset=utf-8")
    public Object addDish(Dish dish, @RequestParam(required = false) MultipartFile file,
                          HttpServletRequest request) {
        boolean addFlag = false;//添加标记
        String fifleFlag = null;//文件上传状态标记
        System.out.println("addDish~~~~~~~~~~~~~~~~~~~~~~~");
        System.out.println("~~~~~~~~~~~~~~~~~~~dishName:" + dish.getDishName());
        if (!file.isEmpty()) {
            String path = request.getSession().getServletContext().getRealPath("assets" + File.separator + "img");//获取/statics/upload的地址
            System.out.println("存储地址：" + path);
            String oldFileName = file.getOriginalFilename();//获取原文件名
            System.out.println("原文件名：" + oldFileName);
            String newFileName = BillCodeUtil.getBillCode() + "_"+oldFileName;//新文件名
            String prefix = FilenameUtils.getExtension(oldFileName);//获取文件后缀，对后缀进行判断，过滤不符合条件的文件
            System.out.println("~~~文件类型:" + prefix + "~~~");
            System.out.println("~~~文件大小：" + file.getSize() + "~~~");
            if ("jpg".equals(prefix) || "JPG".equals(prefix)) {
                System.out.println("~~~文件类型验证通过~~~");
                if (file.getSize() < PagerTools.maxFileSize) {
                    System.out.println("~~~~~~~~~文件大小验证通过~~~~~~~~~~~");
                    try {
                        file.transferTo(new File(path + File.separator +newFileName));
                        System.out.println("上传成功");
                        dish.setFileName(newFileName);//将新文件名保存在对象中
                        addFlag = dishService.addDish(dish);//添加至数据库
                        System.out.println("菜品" + dish.getDishName() + "添加成功");
                    } catch (IllegalStateException e) {
                        e.printStackTrace();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                } else {
                    fifleFlag = "图片不能大于500KB";
                }
            } else {
                fifleFlag = "请上传JPG格式图片";
            }
        }
        if (addFlag) {//添加成功时
            //刷新缓存
            redisUtil.del("allDishes");
            return JSON.toJSONString("OK");
        } else {
            return "{'fifleFlag':'" + fifleFlag + "'}";
        }
    }

    //ajax验证菜品名是否存在
    @ResponseBody
    @RequestMapping("/dishNameIsExist.do")
    public Object dishNameIsExist(@RequestParam(required = false) String dishName) {
        boolean existFlag = false;
        if (dishName != "" && dishName != null) {
            existFlag = dishService.isExist(dishName);
        }
        if (existFlag) {
            return JSON.toJSONString("0");//存在该菜品
        }
        return JSON.toJSONString("1");//不存在该菜品
    }


    //加载菜品列表
    @ResponseBody
    @RequestMapping("/dishList.do")
    public ModelAndView dishList(Pager pager, ModelAndView modelAndView,
                                 @RequestParam(required = false) String dishName) {
        if (dishName == null || "".equals(dishName)) {//如果没有输入查询名字则当作opr=allDish
            pager.setOpr("allDish");
        }
        modelAndView.setViewName("/daily/dish/dishList");
        Dishes dishes = Dishes.getDishes();
        pager.setPageSize(PagerTools.delDishListPagerSize);
        if (dishes.getAllDishCount() == 0) {
            if(redisUtil.getList("allDishes")==null){
                redisUtil.addList("allDishes",dishService.getDish());
            }
            dishes.setAllDish(redisUtil.getList("allDishes"));
        }
        pager.setTotalCount(dishes.getAllDishCount());
        if ("serchDish".equals(pager.getOpr())) {//优先查询
            pager.setPageSize(dishes.getAllDishCount());//搜索时把所有菜品全部查出
            System.out.println("~~~~~~~~~~~~~~~~~~~~~~" + dishName);
        }
        pager.count();
        List<Dish> list = dishes.getAllDish(pager);
        if ("serchDish".equals(pager.getOpr())) {//优先查询
            List<Dish> serchList = new ArrayList<Dish>();
            if (dishName != null && !"".equals(dishName)) {
                System.out.println("~~~~~~~~查找相同菜品的数据~~~~~~~~~~");
                for (Dish dish : list) {
                    if(dish.getDishName().contains(dishName)){
                        System.out.println("~~~~~~~~~~~找到与"+dishName+"相似的菜品~~~~~~~~~~~");
                        serchList.add(dish);
                    }
                }
                pager.setList(serchList);
            }
        } else {
            pager.setList(list);
        }
        modelAndView.addObject("pager", pager);
        return modelAndView;
    }

    //ajax删除菜品
    @ResponseBody
    @RequestMapping("/delDishFromMenu.do")
    public Object delDish(@RequestParam(required = false)String id){
        System.out.println("~~~~~~~~~~~~~~开始删除Dish~~~~~~~~~~~~~~~");
        boolean delFlag=false;
        System.out.println("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~id="+id);
        if(id!=null && !"".equals(id)){
            System.out.println("~~~~~~~~~~~~~~~进入删除~~~~~~~~~~~~~~~~");
            delFlag=dishService.delDishById(id);
        }
        if(delFlag){//删除成功
            System.out.println("~~~~~~~~~~~~~~删除Dish成功~~~~~~~~~~~~~~~");
            redisUtil.del("allDishes");//刷新redis
            Dishes.getDishes().setAllDish(null);//刷新单例
            return JSON.toJSONString(0);//删除成功
        }
        return JSON.toJSONString(1);//删除失败
    }

}