Passport/pkg/services/notifications.go

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package services
import (
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"context"
"firebase.google.com/go/messaging"
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"git.solsynth.dev/hydrogen/passport/pkg/database"
"git.solsynth.dev/hydrogen/passport/pkg/models"
"github.com/rs/zerolog/log"
"github.com/sideshow/apns2"
payload2 "github.com/sideshow/apns2/payload"
"reflect"
)
func AddNotifySubscriber(user models.Account, provider, id, tk, ua string) (models.NotificationSubscriber, error) {
var prev models.NotificationSubscriber
var subscriber models.NotificationSubscriber
if err := database.C.Where(&models.NotificationSubscriber{
DeviceID: id,
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AccountID: user.ID,
}); err != nil {
subscriber = models.NotificationSubscriber{
UserAgent: ua,
Provider: provider,
DeviceID: id,
DeviceToken: tk,
AccountID: user.ID,
}
} else {
prev = subscriber
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}
subscriber.UserAgent = ua
subscriber.Provider = provider
subscriber.DeviceToken = tk
var err error
if !reflect.DeepEqual(subscriber, prev) {
err = database.C.Save(&subscriber).Error
}
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return subscriber, err
}
func NewNotification(notification models.Notification) error {
if err := database.C.Save(&notification).Error; err != nil {
return err
}
go func() {
err := PushNotification(notification)
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if err != nil {
log.Error().Err(err).Msg("Unexpected error occurred during the notification.")
}
}()
return nil
}
func PushNotification(notification models.Notification) error {
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frontendAvailable := false
for conn := range wsConn[notification.RecipientID] {
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frontendAvailable = true
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_ = conn.WriteMessage(1, models.UnifiedCommand{
Action: "notifications.new",
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Payload: notification,
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}.Marshal())
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}
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// Skip push notification when frontend notify is available
if frontendAvailable {
return nil
}
var subscribers []models.NotificationSubscriber
if err := database.C.Where(&models.NotificationSubscriber{
AccountID: notification.RecipientID,
}).Find(&subscribers).Error; err != nil {
return err
}
for _, subscriber := range subscribers {
switch subscriber.Provider {
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case models.NotifySubscriberFirebase:
if ExtFire != nil {
ctx := context.Background()
client, err := ExtFire.Messaging(ctx)
if err != nil {
log.Warn().Err(err).Msg("An error occurred when creating FCM client...")
break
}
message := &messaging.Message{
Notification: &messaging.Notification{
Title: notification.Subject,
Body: notification.Content,
},
Token: subscriber.DeviceToken,
}
if response, err := client.Send(ctx, message); err != nil {
log.Warn().Err(err).Msg("An error occurred when notify subscriber via FCM...")
} else {
log.Debug().
Str("response", response).
Int("subscriber", int(subscriber.ID)).
Msg("Notified subscriber via FCM.")
}
}
case models.NotifySubscriberAPNs:
if ExtAPNS != nil {
data, err := payload2.
NewPayload().
AlertTitle(notification.Subject).
AlertBody(notification.Content).
MarshalJSON()
if err != nil {
log.Warn().Err(err).Msg("An error occurred when preparing to notify subscriber via APNs...")
}
payload := &apns2.Notification{
DeviceToken: subscriber.DeviceToken,
Topic: "dev.solsynth.solian.UniversalNotification",
Payload: data,
}
_, err = ExtAPNS.Push(payload)
if err != nil {
log.Warn().Err(err).Msg("An error occurred when notify subscriber via APNs...")
}
}
}
}
return nil
}