Yattee v2 rewrite

Yattee/Services/Networking/URLSessionFactory.swift

@@ -0,0 +1,61 @@
+//
+//  URLSessionFactory.swift
+//  Yattee
+//
+//  Factory for creating URLSession instances with appropriate SSL settings.
+//
+
+import Foundation
+
+/// Factory for creating URLSession instances based on SSL validation requirements.
+final class URLSessionFactory: Sendable {
+    /// Shared instance for app-wide use.
+    static let shared = URLSessionFactory()
+
+    /// The delegate used for bypassing SSL certificate validation.
+    private let insecureDelegate = InsecureURLSessionDelegate()
+
+    /// Cached insecure URLSession instance.
+    private let insecureSession: URLSession
+
+    /// Cached low-priority URLSession for background/prefetch work.
+    private let lowPriorityURLSession: URLSession
+
+    init() {
+        let config = URLSessionConfiguration.default
+        config.timeoutIntervalForRequest = 30
+        config.timeoutIntervalForResource = 300
+
+        self.insecureSession = URLSession(
+            configuration: config,
+            delegate: insecureDelegate,
+            delegateQueue: nil
+        )
+
+        // Low-priority session for DeArrow and similar background work
+        let lowPriorityConfig = URLSessionConfiguration.default
+        lowPriorityConfig.timeoutIntervalForRequest = 30
+        lowPriorityConfig.timeoutIntervalForResource = 300
+        lowPriorityConfig.networkServiceType = .background
+        lowPriorityConfig.waitsForConnectivity = true
+
+        self.lowPriorityURLSession = URLSession(configuration: lowPriorityConfig)
+    }
+
+    /// Returns an appropriate URLSession based on SSL validation requirements.
+    /// - Parameter allowInvalidCertificates: If true, returns a session that bypasses SSL validation.
+    /// - Returns: A URLSession configured for the requested SSL mode.
+    func session(allowInvalidCertificates: Bool) -> URLSession {
+        if allowInvalidCertificates {
+            return insecureSession
+        } else {
+            return URLSession.shared
+        }
+    }
+
+    /// Returns a low-priority URLSession for background/prefetch work.
+    /// Uses `.background` network service type for OS-level bandwidth deprioritization.
+    func lowPrioritySession() -> URLSession {
+        lowPriorityURLSession
+    }
+}