api/models/logs/edit.go

package logs

import (
	"git.aiterp.net/rpdata/api/models"
	"github.com/globalsign/mgo/bson"
)

// Edit sets a log's meta-data.
func Edit(log models.Log, title *string, event *string, description *string, open *bool) (models.Log, error) {
	changes := bson.M{}

	if title != nil && *title != log.Title {
		changes["title"] = *title
		log.Title = *title
	}
	if event != nil && *event != log.EventName {
		changes["event"] = *event
		log.EventName = *event
	}
	if description != nil && *description != log.Description {
		changes["description"] = *description
		log.Description = *description
	}
	if open != nil && *open != log.Open {
		changes["open"] = *open
		log.Open = *open
	}

	if len(changes) == 0 {
		return log, nil
	}

	err := collection.UpdateId(log.ID, bson.M{"$set": changes})
	if err != nil {
		return models.Log{}, err
	}

	// There can be only one open log. TODO: Transaction
	if changes["open"] != nil && *open {
		query := bson.M{
			"_id":     bson.M{"$ne": log.ID},
			"open":    true,
			"channel": log.ChannelName,
		}

		go collection.UpdateAll(query, bson.M{"$set": bson.M{"open": false}})
	}

	return log, nil
}