api/models/channels/ensure.go

package channels

import (
	"strings"

	"github.com/globalsign/mgo"

	"git.aiterp.net/rpdata/api/models"
)

// Ensure adds a channel if it doesn't exist. If logged is set and the found channel isn't logged,
// that is changed.
func Ensure(name string, logged bool) (*models.Channel, error) {
	if len(name) < 3 && !strings.HasPrefix(name, "#") {
		return nil, ErrInvalidName
	}

	channel, err := FindName(name)
	if err == mgo.ErrNotFound {
		return Add(name, logged, false, "", "")
	} else if err != nil {
		return nil, err
	}

	if logged && !channel.Logged {
		channel, err = Edit(*channel, &logged, nil, nil, nil)
		if err != nil {
			return nil, err
		}
	}

	return channel, nil
}