135 lines
3.2 KiB
Go
135 lines
3.2 KiB
Go
package entity
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import (
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"fmt"
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"time"
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"github.com/jinzhu/gorm"
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"github.com/photoprism/photoprism/pkg/react"
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)
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// Reaction represents a human response to content such as photos and albums.
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type Reaction struct {
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UID string `gorm:"type:VARBINARY(42);primary_key;auto_increment:false" json:"UID,omitempty" yaml:"UID,omitempty"`
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UserUID string `gorm:"type:VARBINARY(42);primary_key;auto_increment:false" json:"UserUID,omitempty" yaml:"UserUID,omitempty"`
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Reaction string `gorm:"type:VARBINARY(64);primary_key;auto_increment:false" json:"Reaction,omitempty" yaml:"Reaction,omitempty"`
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Reacted int `json:"Reacted,omitempty" yaml:"Reacted,omitempty"`
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ReactedAt *time.Time `sql:"index" json:"ReactedAt,omitempty" yaml:"ReactedAt,omitempty"`
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}
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// TableName returns the entity table name.
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func (Reaction) TableName() string {
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return "reactions"
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}
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// NewReaction creates a new Reaction struct.
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func NewReaction(uid, userUid string) *Reaction {
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return &Reaction{
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UID: uid,
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UserUID: userUid,
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}
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}
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// FindReaction returns the matching Reaction record or nil if it was not found.
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func FindReaction(uid, userUid string) (m *Reaction) {
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if uid == "" || userUid == "" {
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return nil
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}
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m = &Reaction{}
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if Db().First(m, "uid = ? AND user_uid = ?", uid, userUid).Error != nil {
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return nil
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}
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return m
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}
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// React adds a react.Emoji reaction.
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func (m *Reaction) React(emo react.Emoji) *Reaction {
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m.Reaction = emo.String()
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m.Reacted += 1
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return m
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}
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// Emoji returns the reaction Emoji.
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func (m *Reaction) Emoji() react.Emoji {
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return react.Emoji(m.Reaction)
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}
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// String returns the user reaction as string.
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func (m *Reaction) String() string {
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return m.Reaction
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}
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// InvalidUID checks if the entity or user uid are missing or incorrect.
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func (m *Reaction) InvalidUID() bool {
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return m.UID == "" || m.UserUID == ""
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}
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// Unknown checks if the reaction data is missing or incorrect.
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func (m *Reaction) Unknown() bool {
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if m.InvalidUID() {
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return true
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}
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return len(m.Reaction) == 0
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}
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// Save updates the record in the database or inserts a new record if it does not already exist.
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func (m *Reaction) Save() (err error) {
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if m.Unknown() {
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return fmt.Errorf("unknown reaction")
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}
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if m.ReactedAt == nil {
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return m.Create()
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}
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reactedAt := TimePointer()
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values := Values{"reaction": m.Reaction, "reacted": gorm.Expr("reacted + 1"), "reacted_at": reactedAt}
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if err = Db().Model(Reaction{}).
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Where("uid = ? AND user_uid = ?", m.UID, m.UserUID).
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UpdateColumns(values).Error; err == nil {
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m.Reacted += 1
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m.ReactedAt = reactedAt
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}
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return err
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}
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// Create inserts a new Reaction.
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func (m *Reaction) Create() (err error) {
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if m.Unknown() {
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return fmt.Errorf("reaction invalid")
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}
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r := &Reaction{UID: m.UID, UserUID: m.UserUID, Reaction: m.Reaction, Reacted: m.Reacted, ReactedAt: TimePointer()}
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if err = Db().Create(r).Error; err == nil {
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m.ReactedAt = r.ReactedAt
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}
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return err
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}
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// Delete deletes the Reaction.
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func (m *Reaction) Delete() error {
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if m.InvalidUID() {
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return fmt.Errorf("reaction invalid")
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}
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// Delete record.
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err := Db().Delete(m, "uid = ? AND user_uid = ?", m.UID, m.UserUID).Error
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// Ok?
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if err == nil {
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m.ReactedAt = nil
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}
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return err
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}
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