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likes.go
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likes.go
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package models
//
// GangGo Application Server
// Copyright (C) 2017 Lukas Matt <lukas@zauberstuhl.de>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
import (
"time"
"github.com/revel/revel"
"git.feneas.org/ganggo/gorm"
"git.feneas.org/ganggo/federation"
)
type Like struct {
ID uint `gorm:"primary_key"`
CreatedAt time.Time
UpdatedAt time.Time
Positive bool
ShareableID uint `gorm:"size:4"`
PersonID uint `gorm:"size:4"`
// size should be max 191 with mysql innodb
// cause asumming we use utf8mb 4*191 = 764 < 767
Guid string `gorm:"size:191"`
ShareableType string `gorm:"size:60"`
Protocol federation.Protocol `gorm:"size:4"`
Signature LikeSignature
}
type Likes []Like
type LikeSignature struct {
ID uint `gorm:"primary_key"`
CreatedAt time.Time
UpdatedAt time.Time
LikeID uint
AuthorSignature string `gorm:"type:text"`
SignatureOrderID uint
AdditionalData string
SignatureOrder SignatureOrder
}
type LikeSignatures []LikeSignature
// Model Interface Type
// FetchID() uint
// FetchGuid() string
// FetchType() string
// FetchPersonID() uint
// FetchText() string
// HasPublic() bool
// IsPublic() bool
func (l Like) FetchID() uint { return l.ID }
func (l Like) FetchGuid() string { return l.Guid }
func (Like) FetchType() string { return ShareableLike }
func (l Like) FetchPersonID() uint { return l.PersonID }
func (Like) FetchText() string { return "" }
func (Like) HasPublic() bool { return false }
func (Like) IsPublic() bool { return false }
// Model Interface Type
func (l *Like) AfterSave(db *gorm.DB) (err error) {
db.Model(l).Related(&l.Signature)
if _, user, ok := l.ParentPostUser(); ok {
return user.Notify(*l)
}
return nil
}
func (signature *LikeSignature) AfterFind(db *gorm.DB) error {
db.Model(signature).Related(&signature.SignatureOrder)
return nil
}
func (l *Like) Delete() (err error) {
db, err := OpenDatabase()
if err != nil {
return
}
defer db.Close()
if l.ID == 0 {
// see http://jinzhu.me/gorm/crud.html#delete
panic("Setting ID to zero will delete all comment records")
}
return db.Delete(l).Error
}
func (l *Like) AfterDelete(db *gorm.DB) (err error) {
// aspect_visibilities
err = db.Where("shareable_id = ? and shareable_type = ?",
l.ID, ShareableLike).Delete(AspectVisibility{}).Error
if err != nil {
revel.AppLog.Error(err.Error())
return
}
// shareables
err = db.Where("shareable_id = ? and shareable_type = ?",
l.ID, ShareableLike).Delete(Shareable{}).Error
if err != nil {
revel.AppLog.Error(err.Error())
return
}
// shareable_taggings
err = db.Where("shareable_id = ? and shareable_type = ?",
l.ID, ShareableLike).Delete(ShareableTagging{}).Error
if err != nil {
revel.AppLog.Error(err.Error())
return
}
// notifications
err = db.Where("shareable_guid = ? and shareable_type = ?",
l.Guid, ShareableLike).Delete(Notification{}).Error
if err != nil {
revel.AppLog.Error(err.Error())
return
}
// like_signatures
return db.Where("like_id = ?", l.ID).Delete(LikeSignature{}).Error
}
func (l *Like) Create() error {
db, err := OpenDatabase()
if err != nil {
return err
}
defer db.Close()
return db.Create(l).Error
}
func (l *Like) ParentPostUser() (*Post, *User, bool) {
post, ok := l.ParentPost(); if !ok {
return nil, nil, ok
}
if post.Person.UserID <= 0 {
return post, nil, false
}
db, err := OpenDatabase()
if err != nil {
revel.AppLog.Error(err.Error())
return post, nil, false
}
defer db.Close()
user := &User{}
err = user.FindByID(post.Person.UserID)
return post, user, err == nil
}
func (l *Like) ParentPost() (*Post, bool) {
db, err := OpenDatabase()
if err != nil {
revel.AppLog.Error(err.Error())
return &Post{}, false
}
defer db.Close()
post := &Post{}
err = db.First(post, l.ShareableID).Error
return post, err == nil
}
func (l *Like) FindByUserAndPostID(user User, id uint) error {
db, err := OpenDatabase()
if err != nil {
return err
}
defer db.Close()
return db.Where(`shareable_id = ?
and shareable_type = ?
and person_id = ?`,
id, ShareablePost, user.Person.ID,
).First(l).Error
}
func (l *Likes) FindByPostID(id uint) error {
db, err := OpenDatabase()
if err != nil {
return err
}
defer db.Close()
return db.Where("shareable_id = ? and shareable_type = ?", id, ShareablePost).Find(l).Error
}
func (l *Like) FindByID(id uint) error { BACKEND_ONLY()
db, err := OpenDatabase()
if err != nil {
return err
}
defer db.Close()
return db.Find(l, id).Error
}
func (l *Like) FindByGuid(guid string) error { BACKEND_ONLY()
db, err := OpenDatabase()
if err != nil {
return err
}
defer db.Close()
return db.Where("guid = ?", guid).Find(l).Error
}