From 769e06554b5f537e8b2de53d2fb878c2ca650075 Mon Sep 17 00:00:00 2001
From: fiatjaf <fiatjaf@gmail.com>
Date: Wed, 13 Sep 2023 21:41:22 -0300
Subject: [PATCH] make instant view happen when there is video or image and the
 note is big enough.

---
 render.go                            | 9 ++++++---
 templates/telegram_instant_view.html | 6 ++++++
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/render.go b/render.go
index b4c0a66..ccfc783 100644
--- a/render.go
+++ b/render.go
@@ -224,11 +224,14 @@ func render(w http.ResponseWriter, r *http.Request) {
 	}
 
 	useTextImage := (event.Kind == 1 || event.Kind == 30023) &&
-		image == "" && video == "" && len(event.Content) > 120
+		image == "" && video == "" && len(event.Content) > 133
 
 	if style == "telegram" {
-		if event.Kind == 30023 ||
-			(event.Kind == 1 && len(event.Content) > 650) {
+		// do telegram instant preview (only works on telegram mobile apps, not desktop)
+		if event.Kind == 30023 || // do it for longform articles
+			(event.Kind == 1 && len(event.Content) > 650) || // or very long notes
+			// or shorter notes that should be using text-to-image stuff but are not because they have video or images
+			(event.Kind == 1 && len(event.Content) > 133 && !useTextImage) {
 			typ = "telegram_instant_view"
 			useTextImage = false
 		}
diff --git a/templates/telegram_instant_view.html b/templates/telegram_instant_view.html
index 0ed0e1d..d80f27b 100644
--- a/templates/telegram_instant_view.html
+++ b/templates/telegram_instant_view.html
@@ -14,6 +14,12 @@
 {{ if .image }}
 <meta property="og:image" content="{{.image | escapeString}}" />
 {{ end }}
+<!---->
+{{ if .video }}
+<meta property="og:video" content="{{.video | escapeString}}" />
+<meta property="og:video:secure_url" content="{{.video | escapeString}}" />
+<meta property="og:video:type" content="video/{{.videoType | escapeString}}" />
+{{ end }}
 
 <!-- stuff that affects the content inside the preview window -->
 <meta name="author" content="{{.metadata.Name}}" />