Add interactive prompt as the root command

sp/commands/root.go

@@ -2,7 +2,11 @@ package commands
 
 import (
 	"context"
+	"fmt"
+	"os"
+	"strings"
 
+	"github.com/c-bata/go-prompt"
 	"github.com/spf13/cobra"
 
 	credrepos "github.com/mitchell/selfpass/services/credentials/repositories"
@@ -15,6 +19,7 @@ import (
 func Execute() {
 	rootCmd := &cobra.Command{
 		Use:   "sp",
+		Run:   run,
 		Short: "This is the CLI client for Selfpass.",
 		Long: `This is the CLI client for Selfpass, the self-hosted password manager. With this tool you
 can interact with the entire Selfpass API.`,
@@ -42,6 +47,50 @@ can interact with the entire Selfpass API.`,
 	check(rootCmd.Execute())
 }
 
+func run(cmd *cobra.Command, _ []string) {
+	ss := []prompt.Suggest{
+		{Text: "exit", Description: "Exit selfpass prompt"},
+	}
+
+	for _, subcmd := range cmd.Commands() {
+		ss = append(ss, prompt.Suggest{
+			Text:        subcmd.Name(),
+			Description: subcmd.Short,
+		})
+	}
+
+	completer := func(d prompt.Document) []prompt.Suggest {
+		return prompt.FilterHasPrefix(ss, d.TextBeforeCursor(), true)
+	}
+
+	executor := func(argstr string) {
+		args := strings.Split(argstr, " ")
+
+		if len(args) > 0 && args[0] == "exit" {
+			fmt.Print("Goodbye!\n\n")
+			os.Exit(0)
+		}
+
+		cmd.SetArgs(args)
+		err := cmd.Execute()
+		if err != nil {
+			fmt.Println(err)
+		}
+		fmt.Println()
+	}
+
+	p := prompt.New(
+		executor,
+		completer,
+		prompt.OptionPrefix("selfpass-> "),
+		prompt.OptionPrefixTextColor(prompt.White),
+		prompt.OptionSuggestionBGColor(prompt.DarkBlue),
+		prompt.OptionDescriptionBGColor(prompt.Blue),
+	)
+
+	p.Run()
+}
+
 func makeInitClient(repo types.ConfigRepo, initClient credtypes.CredentialsClientInit) credentialsClientInit {
 	return func(ctx context.Context) credtypes.CredentialsClient {
 		_, cfg, err := repo.OpenConfig()