Revert "Use alt CDN URL when request header is passed (#4921)" (#4923)

This reverts commit 609e3896eb.

apps/labrinth/src/file_hosting/cdn.rs

@@ -1,79 +0,0 @@
-use std::{convert::Infallible, sync::Arc};
-
-use actix_http::header::HeaderName;
-use actix_utils::future::{Ready, ready};
-use actix_web::FromRequest;
-use eyre::Result;
-
-use crate::util::env::env_var;
-
-#[derive(Debug, Clone, Copy)]
-pub struct UseAltCdn(pub bool);
-
-const HEADER_NAME: HeaderName = HeaderName::from_static("labrinth-alt-cdn");
-
-impl FromRequest for UseAltCdn {
-    type Error = Infallible;
-    type Future = Ready<Result<Self, Self::Error>>;
-
-    fn from_request(
-        req: &actix_web::HttpRequest,
-        _payload: &mut actix_http::Payload,
-    ) -> Self::Future {
-        ready(Ok(Self(use_alt_cdn(req))))
-    }
-}
-
-fn use_alt_cdn(req: &actix_web::HttpRequest) -> bool {
-    let Some(use_alt_cdn) = req.headers().get(HEADER_NAME) else {
-        return false;
-    };
-    use_alt_cdn.as_bytes() == b"true"
-}
-
-#[derive(Debug, Clone)]
-pub enum CdnChoice {
-    Default,
-    Alt {
-        base_url: Arc<str>,
-        alt_url: Arc<str>,
-    },
-}
-
-impl CdnChoice {
-    pub fn transform_file_url(&self, file_url: impl Into<String>) -> String {
-        let file_url = file_url.into();
-        match self {
-            Self::Default => file_url,
-            Self::Alt { base_url, alt_url } => {
-                file_url.replace(&**base_url, alt_url)
-            }
-        }
-    }
-}
-
-#[derive(Debug, Clone)]
-pub struct CdnConfig {
-    pub url: Arc<str>,
-    pub alt_url: Arc<str>,
-}
-
-impl CdnConfig {
-    pub fn from_env() -> Result<Self> {
-        Ok(Self {
-            url: Arc::from(env_var("CDN_URL")?),
-            alt_url: Arc::from(env_var("CDN_ALT_URL")?),
-        })
-    }
-
-    pub fn make_choice(&self, use_alt_cdn: bool) -> CdnChoice {
-        if use_alt_cdn {
-            CdnChoice::Alt {
-                base_url: self.url.clone(),
-                alt_url: self.alt_url.clone(),
-            }
-        } else {
-            CdnChoice::Default
-        }
-    }
-}

apps/labrinth/src/file_hosting/mod.rs

@@ -1,12 +1,10 @@
 use async_trait::async_trait;
 use thiserror::Error;
 
-mod cdn;
 mod mock;
 mod s3_host;
 
 use bytes::Bytes;
-pub use cdn::*;
 pub use mock::MockHost;
 pub use s3_host::{S3BucketConfig, S3Host};