cmd/explain: start interactive mode if no args provided

cmd/explain.go

@@ -2,11 +2,11 @@ package cmd
 
 import (
 	"os"
-	"path"
 	"runtime"
 	"strings"
 
 	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/huh"
 	"github.com/getsavvyinc/savvy-cli/client"
 	"github.com/getsavvyinc/savvy-cli/cmd/component/viewport"
 	"github.com/getsavvyinc/savvy-cli/display"
@@ -17,8 +17,8 @@ import (
 var explainCmd = &cobra.Command{
 	Use:   "explain",
 	Short: "Explain explains shell commands and functions",
-	Args:  cobra.MinimumNArgs(1),
 	Example: `
+  savvy explain # interactive mode
   savvy explain 'openssl x509 -text -in ./ca.crt -noout | grep --color=auto -C 2 "Valid"'
   savvy explain cat "file.txt | sort | uniq -c | sort -nr | head -n 10"
   `,
@@ -40,28 +40,33 @@ var explainCmd = &cobra.Command{
 			cl = client.NewGuest()
 		}
 
+		var code string
+		if len(args) == 0 {
+			// interactive mode
+			text := huh.NewText().Title("Enter the shell command savvy should explain").Value(&code)
+			form := huh.NewForm(huh.NewGroup(text))
+			if err := form.Run(); err != nil {
+				display.ErrorWithSupportCTA(err)
+				os.Exit(1)
+			}
+		}
+
 		// be defensive: users can pass questions as one string or multiple strings
-		code := strings.Join(args[:], " ")
+		if len(args) > 0 && len(code) == 0 {
+			code = strings.Join(args[:], " ")
+		}
 
 		// get info about the os from os pkg: mac/darwin, linux, windows
 		goos := runtime.GOOS
 		if goos == "darwin" {
 			goos = "macos, darwin, osx"
 		}
 
-		fileData, err := fileData(filePath)
-		if err != nil {
-			display.Error(err)
-			os.Exit(1)
-		}
-
 		ci := client.CodeInfo{
 			Code: code,
 			Tags: map[string]string{
 				"os": goos,
 			},
-			FileData: fileData,
-			FileName: path.Base(filePath),
 		}
 
 		explainCh, err := cl.Explain(ctx, ci)