ticker-serve: fix ics linebreaks, PRODID, DTSTAMP

ticker-serve/src/export.rs

@@ -47,13 +47,15 @@ where
         // .into_iter().collect::<Vec<Event>>();
     let (template, content_type) = f(es);
     match template.render() {
-        Ok(rendered) =>
+        Ok(rendered) => {
+            let ics = rendered.replace('\n', "\r\n");
             (
                 [(HeaderName::from_static("content-type"), HeaderValue::from_static(content_type))]
                     .iter().cloned()
                     .collect::<HeaderMap>(),
-                rendered
-            ).into_response(),
+                ics
+            ).into_response()
+        }
         Err(e) => (
             StatusCode::INTERNAL_SERVER_ERROR,
             format!("Failed to render template. Error: {}", e),

ticker-serve/templates/export.ics

@@ -1,11 +1,13 @@
 BEGIN:VCALENDAR
 VERSION:2.0
+PRODID:-//astro/ticker//NONSGML v1.0//DE
 METHOD:PUBLISH
 X-WR-TIMEZONE;VALUE=TEXT:Europe/Berlin
 
 {% for e in events -%}
 BEGIN:VEVENT
 SUMMARY:{{ e.summary }}
+DTSTAMP:{{ e.dtstart.format("%Y%m%dT%H%M%S").to_string() }}
 DTSTART:{{ e.dtstart.format("%Y%m%dT%H%M%S").to_string() }}
 {% if let Some(dtend) = e.dtend -%}
 DTEND:{{ dtend.format("%Y%m%dT%H%M%S") }}