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Merge pull request #128 from getAlby/task-expo-notifs
feat: add endpoint for registering alby go notifications
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,163 @@ | ||
| package nostr | ||
|
|
||
| import ( | ||
| "net/http" | ||
| "time" | ||
|
|
||
| expo "github.com/getAlby/exponent-server-sdk-golang/sdk" | ||
| "github.com/labstack/echo/v4" | ||
| "github.com/nbd-wtf/go-nostr" | ||
| "github.com/sirupsen/logrus" | ||
| ) | ||
|
|
||
| func (svc *Service) NIP47PushNotificationHandler(c echo.Context) error { | ||
| var requestData NIP47PushNotificationRequest | ||
| if err := c.Bind(&requestData); err != nil { | ||
| return c.JSON(http.StatusBadRequest, ErrorResponse{ | ||
| Message: "Error decoding notification request", | ||
| Error: err.Error(), | ||
| }) | ||
| } | ||
|
|
||
| if (requestData.PushToken == "") { | ||
| return c.JSON(http.StatusBadRequest, ErrorResponse{ | ||
| Message: "push token is empty", | ||
| Error: "no push token in request data", | ||
| }) | ||
| } | ||
|
|
||
| _, err := expo.NewExponentPushToken(requestData.PushToken) | ||
| if err != nil { | ||
| return c.JSON(http.StatusBadRequest, ErrorResponse{ | ||
| Message: "invalid push token", | ||
| Error: "invalid push token in request data", | ||
| }) | ||
| } | ||
|
|
||
| if (requestData.WalletPubkey == "") { | ||
| return c.JSON(http.StatusBadRequest, ErrorResponse{ | ||
| Message: "wallet pubkey is empty", | ||
| Error: "no wallet pubkey in request data", | ||
| }) | ||
| } | ||
|
|
||
| if (requestData.ConnPubkey == "") { | ||
| return c.JSON(http.StatusBadRequest, ErrorResponse{ | ||
| Message: "connection pubkey is empty", | ||
| Error: "no connection pubkey in request data", | ||
| }) | ||
| } | ||
|
|
||
| var existingSubscriptions []Subscription | ||
| if err := svc.db.Where("push_token = ? AND open = ? AND authors_json->>0 = ? AND tags_json->'p'->>0 = ?", requestData.PushToken, true, requestData.WalletPubkey, requestData.ConnPubkey).Find(&existingSubscriptions).Error; err != nil { | ||
| svc.Logger.WithError(err).WithFields(logrus.Fields{ | ||
| "push_token": requestData.PushToken, | ||
| }).Error("Failed to check existing subscriptions") | ||
| return c.JSON(http.StatusInternalServerError, ErrorResponse{ | ||
| Message: "internal server error", | ||
| Error: err.Error(), | ||
| }) | ||
| } | ||
|
|
||
| if len(existingSubscriptions) > 0 { | ||
| existingSubscription := existingSubscriptions[0] | ||
| svc.Logger.WithFields(logrus.Fields{ | ||
| "wallet_pubkey": requestData.WalletPubkey, | ||
| "relay_url": requestData.RelayUrl, | ||
| "push_token": requestData.PushToken, | ||
| }).Debug("Subscription already started") | ||
| return c.JSON(http.StatusOK, PushSubscriptionResponse{ | ||
| SubscriptionId: existingSubscription.Uuid, | ||
| PushToken: requestData.PushToken, | ||
| WalletPubkey: requestData.WalletPubkey, | ||
| AppPubkey: requestData.ConnPubkey, | ||
| }) | ||
| } | ||
|
|
||
| svc.Logger.WithFields(logrus.Fields{ | ||
| "wallet_pubkey": requestData.WalletPubkey, | ||
| "relay_url": requestData.RelayUrl, | ||
| "push_token": requestData.PushToken, | ||
| }).Debug("Subscribing to send push notifications") | ||
|
|
||
| subscription := Subscription{ | ||
| RelayUrl: requestData.RelayUrl, | ||
| PushToken: requestData.PushToken, | ||
| IsIOS: requestData.IsIOS, | ||
| Open: true, | ||
| Since: time.Now(), | ||
| Authors: &[]string{requestData.WalletPubkey}, | ||
| Kinds: &[]int{NIP_47_NOTIFICATION_KIND}, | ||
| } | ||
|
|
||
| tags := make(nostr.TagMap) | ||
| (tags)["p"] = []string{requestData.ConnPubkey} | ||
| subscription.Tags = &tags | ||
|
|
||
| err = svc.db.Create(&subscription).Error | ||
| if err != nil { | ||
| svc.Logger.WithError(err).WithFields(logrus.Fields{ | ||
| "wallet_pubkey": requestData.WalletPubkey, | ||
| "relay_url": requestData.RelayUrl, | ||
| "push_token": requestData.PushToken, | ||
| }).Error("Failed to store subscription") | ||
| return c.JSON(http.StatusBadRequest, ErrorResponse{ | ||
| Message: "Failed to store subscription", | ||
| Error: err.Error(), | ||
| }) | ||
| } | ||
|
|
||
| go svc.startSubscription(svc.Ctx, &subscription, nil, svc.handleSubscribedEventForPushNotification) | ||
|
|
||
| return c.JSON(http.StatusOK, PushSubscriptionResponse{ | ||
| SubscriptionId: subscription.Uuid, | ||
| PushToken: requestData.PushToken, | ||
| WalletPubkey: requestData.WalletPubkey, | ||
| AppPubkey: requestData.ConnPubkey, | ||
| }) | ||
| } | ||
|
|
||
| func (svc *Service) handleSubscribedEventForPushNotification(event *nostr.Event, subscription *Subscription) { | ||
| svc.Logger.WithFields(logrus.Fields{ | ||
| "event_id": event.ID, | ||
| "event_kind": event.Kind, | ||
| "subscription_id": subscription.ID, | ||
| "relay_url": subscription.RelayUrl, | ||
| }).Debug("Received subscribed push notification") | ||
|
|
||
| pushToken, _ := expo.NewExponentPushToken(subscription.PushToken) | ||
|
|
||
| pushMessage := &expo.PushMessage{ | ||
| To: []expo.ExponentPushToken{pushToken}, | ||
| Data: map[string]string{ | ||
| "content": event.Content, | ||
| "appPubkey": event.Tags.GetFirst([]string{"p", ""}).Value(), | ||
| }, | ||
| } | ||
|
|
||
| if subscription.IsIOS { | ||
| pushMessage.Title = "Received notification" | ||
| pushMessage.MutableContent = true | ||
| } | ||
|
|
||
| response, err := svc.client.Publish(pushMessage) | ||
| if err != nil { | ||
| svc.Logger.WithError(err).WithFields(logrus.Fields{ | ||
| "push_token": subscription.PushToken, | ||
| }).Error("Failed to send push notification") | ||
| return | ||
| } | ||
|
|
||
| err = response.ValidateResponse() | ||
| if err != nil { | ||
| svc.Logger.WithError(err).WithFields(logrus.Fields{ | ||
| "push_token": subscription.PushToken, | ||
| }).Error("Failed to validate expo publish response") | ||
| return | ||
| } | ||
|
|
||
| svc.Logger.WithFields(logrus.Fields{ | ||
| "event_id": event.ID, | ||
| "push_token": subscription.PushToken, | ||
| }).Debug("Push notification sent successfully") | ||
| } |
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