package com.wmx.wmxredis.resultAPI;

import com.wmx.wmxredis.beans.Person;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;

/**
 * Java 设计 API 接口，实现统一格式返回数据
 *
 * @author wangMaoXiong
 * @version 1.0
 * @date 2020/9/30 16:49
 */
@RestController
public class ResultAPI {

    /**
     * http://localhost:8080/api/findPerson
     *
     * @return
     */
    @GetMapping("api/findPerson")
    public ResultData findPersons() {
        List<Person> personList = this.getData(1, 5);
        ResultData resultData = ResultData.success(personList.get(0));
        return resultData;
    }

    /**
     * http://localhost:8080/api/findPersons?page=5&size=20
     *
     * @param page ：页码
     * @param size ：每页显示的条数
     * @return
     */
    @GetMapping("api/findPersons")
    public ResultData findPersons(@RequestParam int page, @RequestParam int size) {
        List<Person> personList = this.getData(page, size);
        return ResultData.success(ResultCode.SUCCESS_LOAD, personList, 10000000, page, size);
    }

    /**
     * 模拟数据库返回数据
     *
     * @param page
     * @param size
     * @return
     */
    private List<Person> getData(int page, int size) {
        int start = (page - 1) * size + 1;
        int end = page * size;

        List<Person> personList = new ArrayList<>(4);
        for (int i = start; i <= end; i++) {
            personList.add(new Person(i, "用户" + i, new Date()));
        }
        return personList;
    }
}