feat: oidc client create command (#672)

* feat: add oidc client create command

* refactor: use own utility for creating random strings (more flexible
than stdlib)

* feat: validate client name to avoid config errors

* refactor: limit to only alphanumeric characters and hyphens

* refactor: remove the need of the logger in the create oidc client cmd

cmd/tinyauth/create_user.go

@@ -0,0 +1,95 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+
+	"github.com/charmbracelet/huh"
+	"github.com/steveiliop56/tinyauth/internal/utils/tlog"
+	"github.com/traefik/paerser/cli"
+	"golang.org/x/crypto/bcrypt"
+)
+
+type CreateUserConfig struct {
+	Interactive bool   `description:"Create a user interactively."`
+	Docker      bool   `description:"Format output for docker."`
+	Username    string `description:"Username."`
+	Password    string `description:"Password."`
+}
+
+func NewCreateUserConfig() *CreateUserConfig {
+	return &CreateUserConfig{
+		Interactive: false,
+		Docker:      false,
+		Username:    "",
+		Password:    "",
+	}
+}
+
+func createUserCmd() *cli.Command {
+	tCfg := NewCreateUserConfig()
+
+	loaders := []cli.ResourceLoader{
+		&cli.FlagLoader{},
+	}
+
+	return &cli.Command{
+		Name:          "create",
+		Description:   "Create a user",
+		Configuration: tCfg,
+		Resources:     loaders,
+		Run: func(_ []string) error {
+			tlog.NewSimpleLogger().Init()
+
+			if tCfg.Interactive {
+				form := huh.NewForm(
+					huh.NewGroup(
+						huh.NewInput().Title("Username").Value(&tCfg.Username).Validate((func(s string) error {
+							if s == "" {
+								return errors.New("username cannot be empty")
+							}
+							return nil
+						})),
+						huh.NewInput().Title("Password").Value(&tCfg.Password).Validate((func(s string) error {
+							if s == "" {
+								return errors.New("password cannot be empty")
+							}
+							return nil
+						})),
+						huh.NewSelect[bool]().Title("Format the output for Docker?").Options(huh.NewOption("Yes", true), huh.NewOption("No", false)).Value(&tCfg.Docker),
+					),
+				)
+
+				var baseTheme *huh.Theme = huh.ThemeBase()
+
+				err := form.WithTheme(baseTheme).Run()
+
+				if err != nil {
+					return fmt.Errorf("failed to run interactive prompt: %w", err)
+				}
+			}
+
+			if tCfg.Username == "" || tCfg.Password == "" {
+				return errors.New("username and password cannot be empty")
+			}
+
+			tlog.App.Info().Str("username", tCfg.Username).Msg("Creating user")
+
+			passwd, err := bcrypt.GenerateFromPassword([]byte(tCfg.Password), bcrypt.DefaultCost)
+			if err != nil {
+				return fmt.Errorf("failed to hash password: %w", err)
+			}
+
+			// If docker format is enabled, escape the dollar sign
+			passwdStr := string(passwd)
+			if tCfg.Docker {
+				passwdStr = strings.ReplaceAll(passwdStr, "$", "$$")
+			}
+
+			tlog.App.Info().Str("user", fmt.Sprintf("%s:%s", tCfg.Username, passwdStr)).Msg("User created")
+
+			return nil
+		},
+	}
+}