Imports github.com/bwmarrin/snowflake github.com/gogf/gf/v2/text/gstr github.com/hashicorp/go-uuid github.com/spf13/cast gorm.io/gorm/schema Standard library imports crypto/md5 crypto/sha256 encoding/hex errors fmt io io/ioutil math/rand/v2 mime/multipart net os os/exec path/filepath reflect strconv strings time