Feat/codegen url session (#1)

* ✨ (wip): codegen `URLSession` configs

* 📝 (chore): docs update and deps install

* ✨ (feat): `URLSession` codegen

* ✅ (test): `test/codegen/swift_urlsession_test.dart` --wip

lib/codegen/codegen.dart

@@ -1,13 +1,23 @@
-import 'package:apidash/models/models.dart';
 import 'package:apidash/consts.dart';
+import 'package:apidash/models/models.dart';
 import 'package:apidash/utils/utils.dart' show getNewUuid;
+
 import 'c/curl.dart';
 import 'csharp/http_client.dart';
 import 'csharp/rest_sharp.dart';
-import 'dart/http.dart';
 import 'dart/dio.dart';
+import 'dart/http.dart';
 import 'go/http.dart';
+import 'java/async_http_client.dart';
+import 'java/httpclient.dart';
+import 'java/okhttp.dart';
+import 'java/unirest.dart';
+import 'js/axios.dart';
+import 'js/fetch.dart';
+import 'julia/http.dart';
 import 'kotlin/okhttp.dart';
+import 'others/curl.dart';
+import 'others/har.dart';
 import 'php/curl.dart';
 import 'php/guzzle.dart';
 import 'php/http_plug.dart';
@@ -19,15 +29,7 @@ import 'rust/actix.dart';
 import 'rust/curl_rust.dart';
 import 'rust/reqwest.dart';
 import 'rust/ureq.dart';
-import 'js/axios.dart';
-import 'js/fetch.dart';
-import 'others/har.dart';
-import 'others/curl.dart';
-import 'julia/http.dart';
-import 'java/unirest.dart';
-import 'java/okhttp.dart';
-import 'java/async_http_client.dart';
-import 'java/httpclient.dart';
+import 'swift/urlsession.dart';
 
 class Codegen {
   String? getCode(
@@ -98,6 +100,8 @@ class Codegen {
         return RustReqwestCodeGen().getCode(rM);
       case CodegenLanguage.rustUreq:
         return RustUreqCodeGen().getCode(rM, boundary: boundary);
+      case CodegenLanguage.swiftUrlsession:
+        return SwiftURLSessionCodeGen().getCode(rM);
       case CodegenLanguage.phpGuzzle:
         return PhpGuzzleCodeGen().getCode(rM);
       case CodegenLanguage.phpCurl:

lib/codegen/swift/urlsession.dart

@@ -0,0 +1,94 @@
+import 'package:apidash/consts.dart';
+import 'package:apidash/models/models.dart';
+import 'package:apidash/utils/utils.dart' show getValidRequestUri;
+import 'package:jinja/jinja.dart' as jj;
+
+class SwiftURLSessionCodeGen {
+  final String kTemplateStart = """
+import Foundation
+
+""";
+
+  final String kTemplateParameters = '''
+let parameters = "{{parameters}}"
+let postData = parameters.data(using: .utf8)
+
+''';
+
+  final String kTemplateRequest = """
+var request = URLRequest(url: URL(string: "{{url}}")!,timeoutInterval: Double.infinity)
+request.httpMethod = "{{method}}"
+
+""";
+
+  final String kTemplateHeaders = """
+{% for header, value in headers %}
+request.addValue("{{value}}", forHTTPHeaderField: "{{header}}")
+{% endfor %}
+
+""";
+
+  final String kTemplateBody = """
+request.httpBody = postData
+
+""";
+
+  final String kTemplateEnd = """
+let task = URLSession.shared.dataTask(with: request) { data, response, error in 
+  guard let data = data else {
+    print(String(describing: error))
+    return
+  }
+  print(String(data: data, encoding: .utf8)!)
+}
+task.resume()
+""";
+
+  String? getCode(HttpRequestModel requestModel) {
+    try {
+      String result = kTemplateStart;
+
+      var rec =
+          getValidRequestUri(requestModel.url, requestModel.enabledParams);
+      Uri? uri = rec.$1;
+
+      // if (uri == null) {
+      //   throw Exception("Invalid URL");
+      // }
+
+      if (requestModel.hasJsonData || requestModel.hasTextData) {
+        var templateParameters = jj.Template(kTemplateParameters);
+        result += templateParameters.render({
+          "parameters":
+              requestModel.body!.replaceAll('"', '\\"').replaceAll('\n', '\\n')
+        });
+      }
+
+      var templateRequest = jj.Template(kTemplateRequest);
+      result += templateRequest.render({
+        "url": uri.toString(),
+        "method": requestModel.method.name.toUpperCase()
+      });
+
+      var headers = requestModel.enabledHeadersMap;
+      if (requestModel.hasJsonData || requestModel.hasTextData) {
+        headers.putIfAbsent(
+            kHeaderContentType, () => requestModel.bodyContentType.header);
+      }
+      if (headers.isNotEmpty) {
+        var templateHeader = jj.Template(kTemplateHeaders);
+        result += templateHeader.render({"headers": headers});
+      }
+
+      if (requestModel.hasTextData || requestModel.hasJsonData) {
+        result += kTemplateBody;
+      }
+
+      result += kTemplateEnd;
+
+      return result;
+    } catch (e) {
+      return null;
+    }
+  }
+}