/
collection.go
120 lines (98 loc) · 3.2 KB
/
collection.go
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/*
* MIT License
*
* Copyright (c) 2018 SmartestEE Co., Ltd..
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/*
* Revision History:
* Initial: 2018/03/17 Tong Yuehong
*/
package article
import (
"gopkg.in/mgo.v2"
"gopkg.in/mgo.v2/bson"
"github.com/fengyfei/gu/applications/bbs/initialize"
"github.com/fengyfei/gu/libs/mongo"
"github.com/fengyfei/gu/models/bbs"
)
type collectionServiceProvider struct{}
var (
//CollectionService expose serviceProvider.
CollectionService *collectionServiceProvider
collectionSession *mongo.Connection
)
type (
// Collection represents someone's collection.
Collection struct {
Id bson.ObjectId `bson:"_id,omitempty" json:"id"`
UserID uint32 `bson:"userID" json:"userid"`
ArtID []bson.ObjectId `bson:"artID" json:"artid"`
}
)
func init() {
const (
cname = "collection"
)
initialize.S.DB(bbs.Database).C(cname).EnsureIndex(mgo.Index{
Key: []string{"userID"},
Unique: true,
Background: true,
Sparse: true,
})
collectionSession = mongo.NewConnection(initialize.S, bbs.Database, cname)
}
// Insert - collect the article.
func (sp *collectionServiceProvider) Insert(created Collection) error {
conn := collectionSession.Connect()
defer conn.Disconnect()
query := bson.M{"userID": created.UserID}
num, err := conn.Collection().Find(query).Count()
if err != nil {
return err
}
if num != 0 {
err = conn.Update(query, bson.M{"$push": bson.M{"artID": bson.M{"$each": created.ArtID}}})
if err != nil {
return err
}
} else {
err = conn.Insert(created)
}
return nil
}
// UnCollect cancel collection.
func (sp *collectionServiceProvider) UnCollect(userID uint32, artID string) error {
conn := collectionSession.Connect()
defer conn.Disconnect()
query := bson.M{"userID": userID}
return conn.Update(query, bson.M{"$pull": bson.M{"artID": bson.ObjectIdHex(artID)}})
}
// GetByUser gets someone's collection.
func (sp *collectionServiceProvider) GetByUser(userID uint32) (Collection, error) {
var (
list Collection
)
conn := collectionSession.Connect()
defer conn.Disconnect()
query := bson.M{"userID": userID}
err := conn.GetUniqueOne(query, &list)
return list, err
}