package cmd

import (
	"errors"
	"fmt"
	"os"
	"text/tabwriter"

	"github.com/filebrowser/filebrowser/v2/settings"
	"github.com/filebrowser/filebrowser/v2/users"
	"github.com/spf13/cobra"
	"github.com/spf13/pflag"
)

func init() {
	rootCmd.AddCommand(usersCmd)
}

var usersCmd = &cobra.Command{
	Use:   "users",
	Short: "Users management utility",
	Long:  `Users management utility.`,
	Args:  cobra.NoArgs,
	Run: func(cmd *cobra.Command, args []string) {
		cmd.Help()
		os.Exit(0)
	},
}

func printUsers(users []*users.User) {
	w := tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0)
	fmt.Fprintln(w, "ID\tUsername\tScope\tLocale\tV. Mode\tAdmin\tExecute\tCreate\tRename\tModify\tDelete\tShare\tDownload\tPwd Lock")

	for _, user := range users {
		fmt.Fprintf(w, "%d\t%s\t%s\t%s\t%s\t%t\t%t\t%t\t%t\t%t\t%t\t%t\t%t\t%t\t\n",
			user.ID,
			user.Username,
			user.Scope,
			user.Locale,
			user.ViewMode,
			user.Perm.Admin,
			user.Perm.Execute,
			user.Perm.Create,
			user.Perm.Rename,
			user.Perm.Modify,
			user.Perm.Delete,
			user.Perm.Share,
			user.Perm.Download,
			user.LockPassword,
		)
	}

	w.Flush()
}

func usernameOrIDRequired(cmd *cobra.Command, args []string) error {
	username, _ := cmd.Flags().GetString("username")
	id, _ := cmd.Flags().GetUint("id")

	if username == "" && id == 0 {
		return errors.New("'username' of 'id' flag required")
	}

	return nil
}

func addUserFlags(cmd *cobra.Command, prepend string) {
	cmd.Flags().Bool(prepend+"perm.admin", false, "admin perm for users")
	cmd.Flags().Bool(prepend+"perm.execute", true, "execute perm for users")
	cmd.Flags().Bool(prepend+"perm.create", true, "create perm for users")
	cmd.Flags().Bool(prepend+"perm.rename", true, "rename perm for users")
	cmd.Flags().Bool(prepend+"perm.modify", true, "modify perm for users")
	cmd.Flags().Bool(prepend+"perm.delete", true, "delete perm for users")
	cmd.Flags().Bool(prepend+"perm.share", true, "share perm for users")
	cmd.Flags().Bool(prepend+"perm.download", true, "download perm for users")
	cmd.Flags().String(prepend+"sorting.by", "name", "sorting mode (name, size or modified)")
	cmd.Flags().Bool(prepend+"sorting.asc", false, "sorting by ascending order")
	cmd.Flags().Bool(prepend+"lockPassword", false, "lock password")
	cmd.Flags().StringSlice(prepend+"commands", nil, "a list of the commands a user can execute")
	cmd.Flags().String(prepend+"scope", "", "scope for users")
	cmd.Flags().String(prepend+"locale", "en", "locale for users")
	cmd.Flags().String(prepend+"viewMode", string(users.ListViewMode), "view mode for users")
}

func getViewMode(cmd *cobra.Command) users.ViewMode {
	viewMode := users.ViewMode(mustGetString(cmd, "viewMode"))
	if viewMode != users.ListViewMode && viewMode != users.MosaicViewMode {
		checkErr(errors.New("view mode must be \"" + string(users.ListViewMode) + "\" or \"" + string(users.MosaicViewMode) + "\""))
	}
	return viewMode
}

func getUserDefaults(cmd *cobra.Command, defaults *settings.UserDefaults, prepend string, all bool) {
	visit := func(flag *pflag.Flag) {
		switch flag.Name {
		case prepend+"scope":
			defaults.Scope = mustGetString(cmd, flag.Name)
		case prepend+"locale":
			defaults.Locale = mustGetString(cmd, flag.Name)
		case prepend+"viewMode":
			defaults.ViewMode = getViewMode(cmd)
		case prepend+"perm.admin":
			defaults.Perm.Admin = mustGetBool(cmd, flag.Name)
		case prepend+"perm.execute":
			defaults.Perm.Execute = mustGetBool(cmd, flag.Name)
		case prepend+"perm.create":
			defaults.Perm.Create = mustGetBool(cmd, flag.Name)
		case prepend+"perm.rename":
			defaults.Perm.Rename = mustGetBool(cmd, flag.Name)
		case prepend+"perm.modify":
			defaults.Perm.Modify = mustGetBool(cmd, flag.Name)
		case prepend+"perm.delete":
			defaults.Perm.Delete = mustGetBool(cmd, flag.Name)
		case prepend+"perm.share":
			defaults.Perm.Share = mustGetBool(cmd, flag.Name)
		case prepend+"perm.download":
			defaults.Perm.Download = mustGetBool(cmd, flag.Name)
		case prepend+"commands":
			commands, err := cmd.Flags().GetStringSlice(flag.Name)
			checkErr(err)
			defaults.Commands = commands
		case prepend+"sorting.by":
			defaults.Sorting.By = mustGetString(cmd, flag.Name)
		case prepend+"sorting.asc":
			defaults.Sorting.Asc = mustGetBool(cmd, flag.Name)
		}
	}

	if all {
		cmd.Flags().VisitAll(visit)
	} else {
		cmd.Flags().Visit(visit)
	}
}