refactor!: setup file proxy for projects

api/src/endpoints/proxy_file.rs

@@ -0,0 +1,47 @@
+use actix_web::{HttpResponse, web};
+
+use crate::{
+    AppState,
+    error::{Error, Result},
+};
+
+#[derive(serde::Deserialize)]
+pub struct Params {
+    repo_id: String,
+    file: String,
+}
+
+pub async fn proxy_file(
+    app_state: web::Data<AppState>,
+    path: web::Path<Params>,
+) -> Result<HttpResponse> {
+    let repo = app_state
+        .user
+        .get_approved_repository(&path.repo_id)
+        .await?
+        .ok_or(Error::NotFound)?;
+    let token = app_state.user.get_access_token(&repo.owner_id).await?;
+
+    let url = format!(
+        "https://raw.githubusercontent.com/{}/HEAD/dist/{}",
+        repo.full_name, path.file
+    );
+
+    let response = app_state
+        .reqwest_client
+        .get(&url)
+        .bearer_auth(token)
+        .send()
+        .await?;
+    response.error_for_status_ref()?;
+
+    let bytes = response.bytes().await?;
+    let mime = mime_guess::from_path(&path.file)
+        .first_or_octet_stream()
+        .to_string();
+
+    Ok(HttpResponse::Ok()
+        .content_type(mime)
+        .insert_header(("Cache-Control", "public, max-age=3600"))
+        .body(bytes))
+}