notification
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Efril
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package entities
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import (
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"database/sql/driver"
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"encoding/json"
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"errors"
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"time"
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"github.com/google/uuid"
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"gorm.io/gorm"
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)
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type NotificationPriority string
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type NotificationDeliveryStatus string
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type NotificationChannel string
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type NotificationProvider string
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const (
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NotificationPriorityLow NotificationPriority = "low"
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NotificationPriorityNormal NotificationPriority = "normal"
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NotificationPriorityHigh NotificationPriority = "high"
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NotificationDeliveryStatusPending NotificationDeliveryStatus = "pending"
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NotificationDeliveryStatusSent NotificationDeliveryStatus = "sent"
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NotificationDeliveryStatusDelivered NotificationDeliveryStatus = "delivered"
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NotificationDeliveryStatusFailed NotificationDeliveryStatus = "failed"
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NotificationChannelPush NotificationChannel = "push"
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NotificationChannelWebsocket NotificationChannel = "websocket"
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NotificationChannelEmail NotificationChannel = "email"
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NotificationProviderFirebase NotificationProvider = "firebase"
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)
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// NotificationData is a JSON-serializable map for extra notification payload.
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type NotificationData map[string]interface{}
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func (d NotificationData) Value() (driver.Value, error) {
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if d == nil {
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return nil, nil
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}
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return json.Marshal(d)
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}
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func (d *NotificationData) Scan(value interface{}) error {
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if value == nil {
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*d = nil
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return nil
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}
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bytes, ok := value.([]byte)
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if !ok {
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return errors.New("type assertion to []byte failed")
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}
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return json.Unmarshal(bytes, d)
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}
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// Notification is the master notification record.
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type Notification struct {
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ID uuid.UUID `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
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Title string `gorm:"not null;size:255" json:"title"`
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Body string `gorm:"type:text" json:"body"`
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Type string `gorm:"size:100" json:"type"`
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Category string `gorm:"size:100" json:"category"`
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Priority NotificationPriority `gorm:"size:50;default:'normal'" json:"priority"`
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ImageURL string `gorm:"size:512" json:"image_url"`
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ActionURL string `gorm:"size:512" json:"action_url"`
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NotifiableType string `gorm:"size:100" json:"notifiable_type"`
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NotifiableID *uuid.UUID `gorm:"type:uuid" json:"notifiable_id"`
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Data NotificationData `gorm:"type:jsonb" json:"data"`
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ScheduledAt *time.Time `gorm:"type:timestamptz" json:"scheduled_at"`
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SentAt *time.Time `gorm:"type:timestamptz" json:"sent_at"`
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ExpiredAt *time.Time `gorm:"type:timestamptz" json:"expired_at"`
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CreatedBy *uuid.UUID `gorm:"type:uuid" json:"created_by"`
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CreatedAt time.Time `gorm:"autoCreateTime" json:"created_at"`
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UpdatedAt time.Time `gorm:"autoUpdateTime" json:"updated_at"`
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Creator *User `gorm:"foreignKey:CreatedBy" json:"creator,omitempty"`
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Receivers []*NotificationReceiver `gorm:"foreignKey:NotificationID" json:"receivers,omitempty"`
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}
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func (n *Notification) BeforeCreate(tx *gorm.DB) error {
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if n.ID == uuid.Nil {
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n.ID = uuid.New()
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}
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return nil
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}
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func (Notification) TableName() string {
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return "notifications"
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}
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// NotificationReceiver links a notification to a specific user.
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type NotificationReceiver struct {
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ID uuid.UUID `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
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NotificationID uuid.UUID `gorm:"type:uuid;not null;index" json:"notification_id"`
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UserID uuid.UUID `gorm:"type:uuid;not null;index" json:"user_id"`
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IsRead bool `gorm:"default:false" json:"is_read"`
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ReadAt *time.Time `gorm:"type:timestamptz" json:"read_at"`
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IsDeleted bool `gorm:"default:false" json:"is_deleted"`
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DeletedAt *time.Time `gorm:"type:timestamptz" json:"deleted_at"`
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CreatedAt time.Time `gorm:"autoCreateTime" json:"created_at"`
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UpdatedAt time.Time `gorm:"autoUpdateTime" json:"updated_at"`
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Notification *Notification `gorm:"foreignKey:NotificationID" json:"notification,omitempty"`
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User *User `gorm:"foreignKey:UserID" json:"user,omitempty"`
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Deliveries []*NotificationDelivery `gorm:"foreignKey:NotificationReceiverID" json:"deliveries,omitempty"`
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}
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func (n *NotificationReceiver) BeforeCreate(tx *gorm.DB) error {
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if n.ID == uuid.Nil {
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n.ID = uuid.New()
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}
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return nil
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}
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func (NotificationReceiver) TableName() string {
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return "notification_receivers"
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}
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// NotificationDelivery tracks per-device delivery attempts.
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type NotificationDelivery struct {
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ID uuid.UUID `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
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NotificationReceiverID uuid.UUID `gorm:"type:uuid;not null;index" json:"notification_receiver_id"`
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UserDeviceID uuid.UUID `gorm:"type:uuid;not null;index" json:"user_device_id"`
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Channel NotificationChannel `gorm:"size:50;default:'push'" json:"channel"`
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DeliveryStatus NotificationDeliveryStatus `gorm:"size:50;default:'pending'" json:"delivery_status"`
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Provider NotificationProvider `gorm:"size:50" json:"provider"`
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ProviderMessageID string `gorm:"size:255" json:"provider_message_id"`
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SentAt *time.Time `gorm:"type:timestamptz" json:"sent_at"`
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DeliveredAt *time.Time `gorm:"type:timestamptz" json:"delivered_at"`
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FailedAt *time.Time `gorm:"type:timestamptz" json:"failed_at"`
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FailureReason string `gorm:"type:text" json:"failure_reason"`
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RetryCount int `gorm:"default:0" json:"retry_count"`
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CreatedAt time.Time `gorm:"autoCreateTime" json:"created_at"`
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UpdatedAt time.Time `gorm:"autoUpdateTime" json:"updated_at"`
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NotificationReceiver *NotificationReceiver `gorm:"foreignKey:NotificationReceiverID" json:"notification_receiver,omitempty"`
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UserDevice *UserDevice `gorm:"foreignKey:UserDeviceID" json:"user_device,omitempty"`
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}
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func (n *NotificationDelivery) BeforeCreate(tx *gorm.DB) error {
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if n.ID == uuid.Nil {
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n.ID = uuid.New()
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}
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return nil
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}
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func (NotificationDelivery) TableName() string {
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return "notification_deliveries"
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}
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