feat: todo's, add image cache control

src/consts.rs

@@ -11,9 +11,19 @@ pub const MAX_PFP_SIZE: u64 = 8 * 1024 * 1024; // 8 MiB; TODO: might lower, high
 /// Default user image to use if users have none
 pub const DEFAULT_USER_PFP: &[u8] = include_bytes!("../assets/default-pfp.png");
 pub const DEFAULT_USER_PFP_MIME: &str = "image/png; charset=binary";
+/// Basically [`USER_CACHES_HEADER`] but much longer for the [`DEFAULT_USER_PFP`]
+pub const DEFAULT_USER_PFP_CACHES_HEADER: &str =
+    crate::utils::web::make_static_cache_header!(Duration::from_hours(2), Duration::from_days(1));
 
-/// TTL for cached user information
+/// TTL for cached user information, both in server memory and http's cache-control
 pub const USER_CACHES_TTL: Duration = Duration::from_mins(15);
+/// TTL for cached user information in CDNs, (stale-while-revalidate), only for non-urgent info
+/// (e.g. pfp's)
+pub const USER_CDN_CACHES_TTL: Duration = Duration::from_hours(1);
+/// Compile-time formatted string for the cache-control header of [`USER_CACHES_TTL`] and
+/// [`USER_CDN_CACHES_TTL`]
+pub const USER_CACHES_HEADER: &str =
+    crate::utils::web::make_static_cache_header!(USER_CACHES_TTL, USER_CDN_CACHES_TTL);
 
 /// Paths relative to a user's home to search profile pictures in
 pub const USER_PFP_PATHS: &[&str] = &[
@@ -25,3 +35,7 @@ pub const USER_PFP_PATHS: &[&str] = &[
     "logo.jpg",
     ".face",
 ];
+
+pub mod web_scopes {
+    pub const IMAGES: &str = "/image";
+}