R2 impl (#466)

* Add Cloudflare R2 impl

* Bump actix version

* Fix sec issues

src/file_hosting/mock.rs

@@ -21,7 +21,7 @@ impl FileHost for MockHost {
         file_bytes: Bytes,
     ) -> Result<UploadFileData, FileHostingError> {
         let path =
-            std::path::Path::new(&dotenv::var("MOCK_FILE_PATH").unwrap())
+            std::path::Path::new(&dotenvy::var("MOCK_FILE_PATH").unwrap())
                 .join(file_name.replace("../", ""));
         std::fs::create_dir_all(
             path.parent().ok_or(FileHostingError::InvalidFilename)?,
@@ -49,7 +49,7 @@ impl FileHost for MockHost {
         file_name: &str,
     ) -> Result<DeleteFileData, FileHostingError> {
         let path =
-            std::path::Path::new(&dotenv::var("MOCK_FILE_PATH").unwrap())
+            std::path::Path::new(&dotenvy::var("MOCK_FILE_PATH").unwrap())
                 .join(file_name.replace("../", ""));
         std::fs::remove_file(path)?;
 

src/file_hosting/s3_host.rs

@@ -23,9 +23,15 @@ impl S3Host {
     ) -> Result<S3Host, FileHostingError> {
         let mut bucket = Bucket::new(
             bucket_name,
-            Region::Custom {
-                region: bucket_region.to_string(),
-                endpoint: url.to_string(),
+            if bucket_region == "r2" {
+                Region::R2 {
+                    account_id: url.to_string(),
+                }
+            } else {
+                Region::Custom {
+                    region: bucket_region.to_string(),
+                    endpoint: url.to_string(),
+                }
             },
             Credentials::new(
                 Some(access_token),