package tags

import (
	"sort"
	"strings"

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

// List lists all tags
func List() ([]models.Tag, error) {
	tags := make([]models.Tag, 0, 64)
	err := storyCollection.Find(bson.M{"listed": true, "tags": bson.M{"$ne": nil}}).Distinct("tags", &tags)

	sort.Slice(tags, func(i, j int) bool {
		kindCmp := strings.Compare(string(tags[i].Kind), string(tags[j].Kind))
		if kindCmp != 0 {
			return kindCmp < 0
		}

		return strings.Compare(tags[i].Name, tags[j].Name) < 0
	})

	return tags, err
}