package com.malk.test;

import com.malk.server.common.McR;
import com.malk.test.dto.User;
import lombok.extern.slf4j.Slf4j;
import org.apache.poi.ss.formula.functions.T;
import org.springframework.context.annotation.Profile;
import org.springframework.web.bind.annotation.*;

import java.util.*;

/**
 * RESTFul 风格 [取值详见CatchException]
 * -
 * 1. GET       >>>     /users >>>      查询用户列表
 * 2. POST      >>>     /users >>>      创建一个用户
 * 3. GET       >>>     /users/id       查询一个用户
 * 4. PUT/PATCH >>>     /users/id       更新一个用户 [PUG全量更新, PATC增量更新]
 * 5. DELETE    >>>     /users/id       删除一个用户
 * -
 * 参数获取方式均相同, GET 没有 body, @PathVariable 获取 url 占位符, RequestParam 获取 url 参数, @RequestBody 获取 body 数据
 */
@Slf4j
@Profile({"dev", "test"})
@RestController
@RequestMapping("/test/users")
public class RESTFulTestController {

    // 创建线程安全的Map
    static Map<Long, User> users = Collections.synchronizedMap(new HashMap<>());

    // 注解参考 MCTestController
    @ModelAttribute
    void userId(User user) {
        long id1 = (long) (Math.random() * 100);
        long id2 = new Random().nextInt(1000);
        log.info("Random, {}, {}", id1, id2);
        user.setId(id1 + id2);
        user.setName(String.valueOf(id2));
        user.setAge((int) id1);
    }

    public List<User> getUserList() {
        // 处理"/users/"的GET请求，用来获取用户列表
        // 还可以通过@RequestParam从页面中传递参数来进行查询条件或者翻页信息的传递
        return new ArrayList<>(users.values());
    }

    @PostMapping
    public String postUser(@ModelAttribute User user) {
        // 处理"/users/"的POST请求，用来创建User
        // 除了@ModelAttribute绑定参数之外，还可以通过@RequestParam从页面中传递参数
        users.put(user.getId(), user);
        return "success";
    }

    @GetMapping("{id}")
    public User getUser(@PathVariable Long id) {
        // 处理"/users/{id}"的GET请求，用来获取url中id值的User信息
        // url中的id可通过@PathVariable绑定到函数的参数中
        return users.get(id);
    }

    @RequestMapping(value = "{id}", method = {RequestMethod.PUT, RequestMethod.PATCH})
    public String putUser(@PathVariable Long id, @ModelAttribute User user, @RequestParam String param, @RequestBody Map<String, String> body) {
        log.info("PUT / PATCH, {}, {}, {}", id, param, body);
        // 处理"/users/{id}"的PUT请求，用来更新User信息
        User u = users.get(id);
        u.setName(user.getName());
        u.setAge(user.getAge());
        users.put(id, u);
        return "success";
    }

    @DeleteMapping("{id}")
    public String deleteUser(@PathVariable Long id, @RequestParam String param, @RequestBody Map<String, String> body) {
        log.info("delete, {}, {}, {}", id, param, body);
        // 处理"/users/{id}"的DELETE请求，用来删除User
        users.remove(id);
        return "success";
    }

    /**
     * test
     */
    @GetMapping("test")
    McR<T> test() {
        return McR.success();
    }
}