Handle interrupted pairing, artwork retries and revoked access reliably

MusicBridge/BridgeClient.swift

@@ -86,14 +86,18 @@ final class BridgeClient {
         let (bytes, response) = try await session.bytes(for: request)
         guard let response = response as? HTTPURLResponse else { throw BridgeError.message("Нет ответа от ПК.") }
         if response.statusCode == 401 { throw BridgeError.unauthorized }
-        guard (200...299).contains(response.statusCode) else {
-            throw BridgeError.message("ПК отклонил запрос (HTTP \(response.statusCode)). Проверьте код и состояние агента.")
-        }
+        let success = (200...299).contains(response.statusCode)
+        let bodyLimit = success ? limit : min(limit, 16 * 1024)
         var result = Data()
         for try await byte in bytes {
-            guard result.count < limit else { throw BridgeError.message("Ответ ПК слишком большой.") }
+            guard result.count < bodyLimit else { throw BridgeError.message("Ответ ПК слишком большой.") }
             result.append(byte)
         }
+        guard success else {
+            struct Failure: Decodable { let code: String? }
+            let code = (try? JSONDecoder().decode(Failure.self, from: result))?.code
+            throw BridgeError.http(status: response.statusCode, code: code)
+        }
         return result
     }
 
@@ -101,7 +105,7 @@ final class BridgeClient {
         let body = try JSONSerialization.data(withJSONObject: ["code": code, "deviceName": "MusicBridge iPhone"])
         let response = try JSONDecoder().decode(PairResponse.self, from: await data(request("v1/pair", body: body, authenticated: false)))
         guard response.success, let token = response.token, Connection.isFingerprint(token) else {
-            throw BridgeError.message("Сопряжение отклонено: \(response.code)")
+            throw BridgeError.http(status: 403, code: response.code)
         }
         return token
     }