package services

import (
	"encoding/json"
	"io"
	"net/http"
	"strconv"

	"ems.agt/lib/global"
)

// 读取json请求结构团体
func ShouldBindJSON(r *http.Request, args any) error {
	body, err := io.ReadAll(io.LimitReader(r.Body, global.RequestBodyMaxLen))
	if err != nil {
		return err
	}
	err = json.Unmarshal(body, args)
	return err
}

// Get 查詢分頁值
func GetPageNumSize(r *http.Request) (int, int) {
	pageNumStr := r.URL.Query().Get("pageNum")
	num := 1
	if v, err := strconv.Atoi(pageNumStr); err == nil && v > 0 {
		if v >= 100 {
			num = 100
		} else {
			num = v
		}
	}

	pageSizeStr := r.URL.Query().Get("pageSize")
	size := 0
	if v, err := strconv.Atoi(pageSizeStr); err == nil && v > 0 {
		if v >= 60 {
			size = 60
		} else {
			size = v
		}
	}

	return num, size
}