package com.example.learnspring.controller;

import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.io.File;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;

/**
 * Created with IntelliJ IDEA.
 * Description：
 *
 * @author: zxj
 * @date: 2023-11-05
 * @time: 22:11:45
 */
@RequestMapping("/param")
@RestController
public class ParamController {
    @RequestMapping("/m1")
    public String method1(String name) {
        return "收到name: " + name;
    }

    @RequestMapping("/m2")
    public String method2(int age) {
        // 对于基本类型来说
        // 如果前端传的参数不对, 就会返回 400 -- 说明前端传的参数不对
        // 如果前端不传 age 对应的值, 就会返回 500 -- 服务报错
        // 所以, 对于基本类型来说, 最好都使用包装器 int -> Integer
        return "收到age: " + age;
    }

    @RequestMapping("/m3")
    public String method3(String name, Integer age) {
        // 接受多个参数
        return "收到name: " + name + ", age: " + age;
    }

    static class Person {
        public int age;
        public String name;

        @Override
        public String toString() {
            return "Person{" +
                    "age=" + age +
                    ", name='" + name + '\'' +
                    '}';
        }

        public int getAge() {
            return age;
        }

        public void setAge(int age) {
            this.age = age;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }
    }

    @RequestMapping("/m4")
    public String method4(Person person) {
        // 传递Person对象, Spring 会默认将得到的KV进行相应的数值填充
        // 如果k匹配就填充对应的v
        // 如果没有匹配就默认是java类型中的默认值
        return "收到person: " + person;
    }

    @RequestMapping("/m5")
    public String method5(@RequestParam(value = "name", required = false) String myName) {
        return myName;
    }

    @RequestMapping("/m6")
    public String method6(String[] strings) {
        return Arrays.toString(strings);
    }

    @RequestMapping("/m7")
    public String method7(@RequestParam List<String> listParam) {
        return listParam.toString();
    }

    @RequestMapping("/m8")
    public String method8(@RequestBody Person person) {
        // 将 body 中的 json 字符串转化为对象
        return person.toString();
    }

    @RequestMapping("/m9/{id}/{name}")
    public String method9(@PathVariable Integer id, @PathVariable String name) {
        return "解析参数 id: " + id + ", name: " + name;
    }

    @RequestMapping("/m10")
    public String getFile(@RequestPart("file") MultipartFile file) throws IOException {
        // 获取文件名
        String filename = file.getOriginalFilename();
        // 文件上传到指定的路径
        file.transferTo(new File("D:/tmp/" + file.getOriginalFilename()));
        return "接受到文件的名称: " + filename;
    }

    @RequestMapping("/m11")
    public String getCookie(HttpServletRequest request) {
        Cookie[] cookies = request.getCookies();
        if (cookies != null) {
            for (Cookie cookie : cookies) {
                System.out.println(cookie.getName() + ":" + cookie.getValue());
            }
        }
        return "success";
    }

    @RequestMapping("/getCookie")
    public String getCookie(@CookieValue("id") String id) {
        System.out.println("id: " + id);
        return "success";
    }

    @RequestMapping("/setSession")
    public String setSession(HttpServletRequest request) {
        HttpSession session = request.getSession(true);
        session.setAttribute("name", "张三");
        return "session 存储成功";
    }

    @RequestMapping("/getSession")
    public String getSession(HttpServletRequest request) {
        HttpSession session = request.getSession(false);
        String name = null;
        if (session != null && session.getAttribute("name") != null) {
            name = (String) session.getAttribute("name");
        }
        return  "获取到 name: " + name;
    }

    @RequestMapping("/getSession2")
    public String getSession2(@SessionAttribute(value = "name",required = false) String name) {
        return "获取到 name: " + name;
    }

    @RequestMapping("/getSession3")
    public String getSession3(HttpSession session) {
        String name = (String) session.getAttribute("name");
        return "获取到 name: " + name;
    }

    @RequestMapping("getHeader")
    public String getHeader(HttpServletRequest request) {
        String userAgent = request.getHeader("User-Agent");
        return userAgent;
    }

    @RequestMapping("getHeader1")
    public String getHeader1(@RequestHeader("User-Agent") String userAgent) {
        return userAgent;
    }


}