improvement: utilize TaskGroup when retrieving assets

Sources/OpenAlpha/Internal/Models/Media.swift

@@ -1,6 +1,6 @@
 //
 // Media.swift
-// 
+//
 //
 // Created by Cole Roberts on 12/28/22.
 //
@@ -42,17 +42,26 @@ public final class Media: FetchableSize {
  }
 
  func fetch(sizes: [Size]) async throws {
- for size in sizes {
- switch size {
- case .thumbnail:
- try await thumbnail?.fetch()
- case .small:
- try await small?.fetch()
- case .large:
- try await large?.fetch()
- case .original:
- try await original?.fetch()
+ let thumbnail: Asset? = self.thumbnail
+ let small: Asset? = self.small
+ let large: Asset? = self.large
+ let original: Asset? = self.original
+
+ try await withThrowingTaskGroup(of: Void.self) { group in
+ for size in sizes {
+ switch size {
+ case .thumbnail:
+ group.addTask { try await thumbnail?.fetch() }
+ case .small:
+ group.addTask { try await small?.fetch() }
+ case .large:
+ group.addTask { try await large?.fetch() }
+ case .original:
+ group.addTask { try await original?.fetch() }
+ }
  }
+
+ try await group.waitForAll()
  }
  }
 }

Sources/OpenAlpha/Internal/Providers/MediaProvider.swift

@@ -47,15 +47,23 @@ final class MediaProvider: MediaProviding {
  let result = try await ResultXMLParser(data: response).parse()
  let items = try await ItemXMLParser(result).parse()
  let media = items.compactMap(Media.init)
-
- for item in media {
- try await item.fetch(sizes: sizes)
- }
-
+ try await fetch(media, with: sizes)
  _ = try await DLNA.EndAction(ip: ip).request(with: session)
  return media
  } catch {
  throw error
  }
  }
+
+ // MARK: - `Private Methods` -
+
+ private func fetch(_ media: [Media], with sizes: [Media.Size]) async throws {
+ return try await withThrowingTaskGroup(of: Void.self) { group in
+ for medium in media {
+ group.addTask { try await medium.fetch(sizes: sizes) }
+ }
+
+ return try await group.waitForAll()
+ }
+ }
 }