package arrange import ( "fmt" "io" "os" "path/filepath" "time" ) // Media is the high-level filetype that can be arranged. type Media struct { Path string Hash string Extension string Time time.Time } // Move is called to push Media into its final destination, by content address // and by date. func (m Media) Move(root string) error { f, err := os.Open(m.Path) if err != nil { return fmt.Errorf("problem opening file %q: %v", m.Path, err) } defer f.Close() content := filepath.Join(root, "content", m.Hash[:2], m.Hash[2:]+m.Extension) if _, err := os.Stat(content); !os.IsNotExist(err) { return Dup{content} } out, err := os.Create(content) if err != nil { return fmt.Errorf("could not create output file: %v", err) } defer out.Close() if _, err := io.Copy(out, f); err != nil { return fmt.Errorf("trouble copying file: %v", err) } year := fmt.Sprintf("%04d", m.Time.Year()) month := fmt.Sprintf("%02d", m.Time.Month()) ts := fmt.Sprintf("%d", m.Time.UnixNano()) if err := os.MkdirAll(filepath.Join(root, "date", year, month), 0755); err != nil { return fmt.Errorf("problem creating date directory: %v", err) } date := filepath.Join(root, "date", year, month, ts) name := date + m.Extension for i := 0; i < 10000; i++ { if _, err := os.Stat(name); os.IsNotExist(err) { break } name = fmt.Sprintf("%s_%04d%s", date, i, m.Extension) } // TODO: or maybe symlinking? (issue #2) // rel := filepath.Join("..", "..", "..", "content", j.hash[:2], j.hash[2:]+m.Extension) // return os.Symlink(rel, name) return os.Link(content, name) }