feat: add gzip compression

Author: abelonogov-ld

Sources/Common/GraphQL/GraphQLClient.swift

@@ -1,4 +1,5 @@
 import Foundation
+import DataCompression
 
 public final class GraphQLClient {
     public let endpoint: URL
@@ -34,6 +35,15 @@ public final class GraphQLClient {
         let gqlRequest = GraphQLRequest(query: query, variables: variables, operationName: operationName)
         var request = URLRequest(url: endpoint)
         request.httpMethod = "POST"
+        
+        let rawData = try gqlRequest.httpBody()
+        if let compressedData = rawData.gzip() {
+          request.httpBody = compressedData
+          request.setValue("gzip", forHTTPHeaderField: "Content-Encoding")
+        } else {
+          request.httpBody = rawData
+        }
+
         request.httpBody = try gqlRequest.httpBody()
 
         print("🔹Sending request: \(String(data: request.httpBody!, encoding: .utf8) ?? "(no body)")")
@@ -42,6 +52,9 @@ public final class GraphQLClient {
         combinedHeaders.forEach { request.setValue($0.value, forHTTPHeaderField: $0.key) }
 
         let data = try await network.send(request)
+ 
+        
+        print("GraphQL response: \(String(data: data, encoding: .utf8) ?? "(no data)")")
 
         do {
             let envelope = try decoder.decode(GraphQLResponse<Output>.self, from: data)