Outbound live stream notifications (#1663)

* First pass at browser, discord, twilio notifications * Commit updated Javascript packages * Remove twilio notification support * Email notifications/smtp support * Fix Firefox notification support, remove chrome checks * WIP more email work * Add support for twitter notifications * Add stream title to discord and twitter notifications * Update notification registration modal * Fix hide/show email section * Commit updated API documentation * Commit updated Javascript packages * Fix post-rebase missing var * Remove unused var * Handle unsubscribe errors for browser push * Standardize email config prop names * Allow overriding go live email template * Some notifications cleanup * Commit updated Javascript packages * Remove email/smtp/mailjet support * Remove more references to email notifications Co-authored-by: Owncast <owncast@owncast.online>
2022-03-18 13:33:23 -07:00
parent 4e415f7257
commit 4a17f30da8
39 changed files with 2209 additions and 3313 deletions
--- a/notifications/browser/browser.go
+++ b/notifications/browser/browser.go
@@ -0,0 +1,83 @@
+package browser
+
+import (
+	"encoding/json"
+
+	"github.com/SherClockHolmes/webpush-go"
+	"github.com/owncast/owncast/core/data"
+	"github.com/pkg/errors"
+)
+
+// Browser is an instance of the Browser service.
+type Browser struct {
+	datastore  *data.Datastore
+	privateKey string
+	publicKey  string
+}
+
+// New will create a new instance of the Browser service.
+func New(datastore *data.Datastore, publicKey, privateKey string) (*Browser, error) {
+	return &Browser{
+		datastore:  datastore,
+		privateKey: privateKey,
+		publicKey:  publicKey,
+	}, nil
+}
+
+// GenerateBrowserPushKeys will create the VAPID keys required for web push notifications.
+func GenerateBrowserPushKeys() (string, string, error) {
+	privateKey, publicKey, err := webpush.GenerateVAPIDKeys()
+	if err != nil {
+		return "", "", errors.Wrap(err, "error generating web push keys")
+	}
+
+	return privateKey, publicKey, nil
+}
+
+// Send will send a browser push notification to the given subscription.
+func (b *Browser) Send(
+	subscription string,
+	title string,
+	body string,
+) (bool, error) {
+	type message struct {
+		Title string `json:"title"`
+		Body  string `json:"body"`
+		Icon  string `json:"icon"`
+	}
+
+	m := message{
+		Title: title,
+		Body:  body,
+		Icon:  "/logo/external",
+	}
+
+	d, err := json.Marshal(m)
+	if err != nil {
+		return false, errors.Wrap(err, "error marshalling web push message")
+	}
+
+	// Decode subscription
+	s := &webpush.Subscription{}
+	if err := json.Unmarshal([]byte(subscription), s); err != nil {
+		return false, errors.Wrap(err, "error decoding destination subscription")
+	}
+
+	// Send Notification
+	resp, err := webpush.SendNotification(d, s, &webpush.Options{
+		VAPIDPublicKey:  b.publicKey,
+		VAPIDPrivateKey: b.privateKey,
+		Topic:           "owncast-go-live",
+		TTL:             10,
+		// Not really the subscriber, but a contact point for the sender.
+		Subscriber: "owncast@owncast.online",
+	})
+	if resp.StatusCode == 410 {
+		return true, nil
+	} else if err != nil {
+		return false, errors.Wrap(err, "error sending browser push notification")
+	}
+	defer resp.Body.Close()
+
+	return false, err
+}