package image

import (
	"crypto/md5"
	"fmt"
	"icloudapp.cn/tools/util"
	fileObj "icloudapp.cn/tools/util/file"
	"os"
	"strings"
)

type Cache struct {
	Path string
}

func NewCache(path string) *Cache {
	return &Cache{Path: path}
}

// SetCache 设置缓存目录
func (c *Cache) SetCache(path string) {
	c.Path = path
}

// CacheFile Cache 获取缓存文件名
func (c *Cache) CacheFile(file string, format string) string {
	if !fileObj.IsDir(c.Path) {
		if err := os.Mkdir(c.Path, 0755); err != nil {
			panic(err.Error())
		}
	}
	if file == "" {
		file = util.RandomStr(10)
	}
	destName := fmt.Sprintf("%x", md5.Sum([]byte(file)))
	destFile := fmt.Sprintf("%s/%s.%s", c.Path, destName, strings.ToLower(format))
	return destFile
}