package telebot import ( "io" "os" ) // File object represents any sort of file. type File struct { FileID string `json:"file_id"` FileSize int `json:"file_size"` // file on telegram server https://core.telegram.org/bots/api#file FilePath string `json:"file_path"` // file on local file system. FileLocal string `json:"file_local"` // file on the internet FileURL string `json:"file_url"` // file backed with io.Reader FileReader io.Reader `json:"-"` } // FromDisk constructs a new local (on-disk) file object. // // Note, it returns File, not *File for a very good reason: // in telebot, File is pretty much an embeddable struct, // so upon uploading media you'll need to set embedded File // with something. NewFile() returning File makes it a one-liner. // // photo := &tb.Photo{File: tb.FromDisk("chicken.jpg")} // func FromDisk(filename string) File { return File{FileLocal: filename} } // FromURL constructs a new file on provided HTTP URL. // // Note, it returns File, not *File for a very good reason: // in telebot, File is pretty much an embeddable struct, // so upon uploading media you'll need to set embedded File // with something. NewFile() returning File makes it a one-liner. // // photo := &tb.Photo{File: tb.FromURL("https://site.com/picture.jpg")} // func FromURL(url string) File { return File{FileURL: url} } // FromReader constructs a new file from io.Reader. // // Note, it returns File, not *File for a very good reason: // in telebot, File is pretty much an embeddable struct, // so upon uploading media you'll need to set embedded File // with something. NewFile() returning File makes it a one-liner. // // photo := &tb.Photo{File: tb.FromReader(bytes.NewReader(...))} // func FromReader(reader io.Reader) File { return File{FileReader: reader} } func (f *File) stealRef(g *File) { if g.OnDisk() { f.FileLocal = g.FileLocal } if g.FileURL != "" { f.FileURL = g.FileURL } } // InCloud tells whether the file is present on Telegram servers. func (f *File) InCloud() bool { return f.FileID != "" } // OnDisk will return true if file is present on disk. func (f *File) OnDisk() bool { if _, err := os.Stat(f.FileLocal); err != nil { return false } return true }