caldav: Add vtimezone repository to date timezone with timezone-id

crates/caldav/src/calendar/resource.rs

@@ -15,7 +15,6 @@ use rustical_store::Calendar;
 use rustical_store::auth::Principal;
 use rustical_xml::{EnumVariants, PropName};
 use rustical_xml::{XmlDeserialize, XmlSerialize};
-use std::str::FromStr;
 
 #[derive(XmlDeserialize, XmlSerialize, PartialEq, Clone, EnumVariants, PropName)]
 #[xml(unit_variants_ident = "CalendarPropName")]
@@ -199,11 +198,15 @@ impl Resource for CalendarResource {
                 CalendarProp::TimezoneServiceSet(_) => Err(rustical_dav::Error::PropReadOnly),
                 CalendarProp::CalendarTimezoneId(timezone_id) => {
                     if let Some(tzid) = &timezone_id {
-                        // Validate timezone id
-                        chrono_tz::Tz::from_str(tzid).map_err(|_| {
-                            rustical_dav::Error::BadRequest(format!("Invalid timezone-id: {tzid}"))
-                        })?;
-                        // TODO: Ensure that timezone is also updated (For now hope that clients play nice)
+                        // Validate timezone id and set timezone accordingly
+                        self.cal.timezone = Some(
+                            vzic_rs::VTIMEZONES
+                                .get(tzid)
+                                .ok_or(rustical_dav::Error::BadRequest(format!(
+                                    "Invalid timezone-id: {tzid}"
+                                )))?
+                                .to_string(),
+                        );
                     }
                     self.cal.timezone_id = timezone_id;
                     Ok(())
@@ -305,3 +308,12 @@ impl Resource for CalendarResource {
         ))
     }
 }
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn test_tzdb_version() {
+        // Ensure that both chrono_tz and vzic_rs use the same tzdb version
+        assert_eq!(chrono_tz::IANA_TZDB_VERSION, vzic_rs::IANA_TZDB_VERSION);
+    }
+}