package gormx

import "gorm.io/gorm"

// 计算DB的分页
func GetDbOffset(db *gorm.DB, page, size int64) *gorm.DB {
	offset := int(0)
	limit := int(0)
	if page <= 0 && size <= 0 {
		// 最大可找1000条
		limit = 1000
	} else {
		if page <= 0 {
			page = 1
		}
		if size <= 0 {
			size = 10
		}
		offset = int((page - 1) * size)
		limit = int(size)
	}

	return db.Offset(offset).Limit(limit)
}

// 分页查询
func GetOffset(page, size int) (offset int, limit int) {
	if page <= 0 {
		page = 1
	}
	offset = (page - 1) * size
	limit = size
	if limit == 0 {
		// 默认查10条
		limit = 10
	}
	return
}