package main

import (
	"encoding/json"
	"errors"
	"fmt"
	"os"

	"github.com/fd0/khepri"
	"github.com/fd0/khepri/backend"
)

func list_keys(be backend.Server, key *khepri.Key) error {
	tab := NewTable()
	tab.Header = fmt.Sprintf("%-10s  %-10s  %-10s  %s", "ID", "User", "Host", "Created")
	tab.RowFormat = "%-10s  %-10s  %-10s  %s"

	plen, err := backend.PrefixLength(be, backend.Key)
	if err != nil {
		return err
	}

	backend.Each(be, backend.Key, func(id backend.ID, data []byte, err error) {
		k := khepri.Key{}
		err = json.Unmarshal(data, &k)
		if err != nil {
			return
		}

		tab.Rows = append(tab.Rows, []interface{}{id[:plen],
			k.Username, k.Hostname, k.Created.Format(TimeFormat)})
	})

	tab.Print(os.Stdout)

	return nil
}

func commandKey(be backend.Server, key *khepri.Key, args []string) error {
	if len(args) < 1 {
		return errors.New("usage: key [list]")
	}

	switch args[0] {
	case "list":
		return list_keys(be, key)
	}

	return nil
}