cmd/mbf: display metadata

For viewing package metadata before the website is ready.

Signed-off-by: Ophestra <cat@gensokyo.uk>

cmd/mbf/main.go

@@ -11,6 +11,7 @@ import (
 	"path/filepath"
 	"runtime"
 	"strconv"
+	"strings"
 	"syscall"
 	"time"
 	"unique"
@@ -130,6 +131,37 @@ func main() {
 		)
 	}
 
+	c.NewCommand(
+		"info",
+		"Display out-of-band metadata of an artifact",
+		func(args []string) error {
+			if len(args) != 1 {
+				return errors.New("info requires 1 argument")
+			}
+			if p, ok := rosa.ResolveName(args[0]); !ok {
+				return fmt.Errorf("unknown artifact %q", args[0])
+			} else {
+				segments := make([]string, 0, 3)
+
+				if version := rosa.Std.Version(p); version != rosa.Unversioned {
+					segments = append(segments, "version:\n\t"+version)
+				}
+
+				meta := rosa.GetMetadata(p)
+				segments = append(segments, "description:\n\t"+meta.Description)
+				if meta.Website != "" {
+
+					segments = append(segments,
+						"website:\n\t"+strings.TrimSuffix(meta.Website, "/"),
+					)
+				}
+
+				fmt.Println(strings.Join(segments, "\n\n"))
+				return nil
+			}
+		},
+	)
+
 	c.NewCommand("updates", command.UsageInternal, func([]string) error {
 		var n int
 		for i := range rosa.PresetEnd {