refactor: Rewrote in golang.

cmd/sync.go

@@ -0,0 +1,62 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/sbrow/envr/app"
+	"github.com/spf13/cobra"
+)
+
+// TODO: Detect when file paths have moved and update accordingly.
+var syncCmd = &cobra.Command{
+	Use:   "sync",
+	Short: "Update or restore your env backups",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		db, err := app.Open()
+		if err != nil {
+			return err
+		} else {
+			defer db.Close(app.Write)
+			files, err := db.List()
+
+			if err != nil {
+				return err
+			} else {
+				for _, file := range files {
+					fmt.Printf("%s\n", file.Path)
+
+					// Syncronize the filesystem with the database.
+					changed, err := file.Sync()
+
+					switch changed {
+					case app.Updated:
+						fmt.Printf("File updated - changes saved\n")
+						if err := db.Insert(file); err != nil {
+							return err
+						}
+					case app.Restored:
+						fmt.Printf("File missing - restored backup\n")
+					case app.Error:
+						if err == nil {
+							panic("err cannot be nil when Sync returns Error")
+						} else {
+							fmt.Printf("%s\n", err)
+						}
+					case app.Noop:
+						fmt.Println("Nothing to do")
+					default:
+						panic("Unknown result")
+					}
+
+					fmt.Println("")
+				}
+
+				return nil
+			}
+		}
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(syncCmd)
+}