api/models/posts/remove.go

package posts

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

// Remove removes a post, moving all subsequent post up one position
func Remove(post models.Post) (models.Post, error) {
	mutex.Lock()
	defer mutex.Unlock()

	err := collection.RemoveId(post.ID)
	if err != nil {
		return models.Post{}, err
	}

	_, err = collection.UpdateAll(bson.M{"logId": post.LogID, "position": bson.M{"$gt": post.Position}}, bson.M{"$inc": bson.M{"position": -1}})
	if err != nil {
		return models.Post{}, err
	}

	counter.NextMany("next_post_id", post.LogID, -1)

	return post, nil
}

// RemoveAllInLog removes all posts for the given log.
func RemoveAllInLog(log models.Log) error {
	_, err := collection.RemoveAll(bson.M{"logId": log.ShortID})
	return err
}