script to generate csharp httpclient code

lib/codegen/csharp/http_client.dart

@@ -0,0 +1,138 @@
+import 'package:apidash/consts.dart';
+import 'package:jinja/jinja.dart' as jj;
+import 'package:apidash/models/models.dart' show RequestModel;
+import 'package:apidash/utils/http_utils.dart';
+
+class CSharpHttpClientCodeGen {
+  final String kTemplateNamespaces = r'''
+using System;
+using System.Net.Http;
+{%- if formdata == 'multipart' %}
+using System.IO;
+{%- elif formdata == 'urlencoded' %}
+using System.Collections.Generic;
+{%- endif %}
+
+''';
+
+  final String kTemplateUri = '''
+string uri = "{{ uri }}";
+
+''';
+
+  final String kTemplateHttpClientAndRequest = '''
+using (var client = new HttpClient())
+using (var request = new HttpRequestMessage(HttpMethod.{{ method | capitalize }}, uri))
+{
+''';
+
+  final String kTemplateHeaders = r'''
+    {% for name, value in headers -%}
+    request.Headers.Add("{{ name }}", "{{ value}}");
+    {% endfor %}
+''';
+
+  final String kTemplateFormUrlEncodedContent = '''
+    var payload = new Dictionary<string, string>
+    {
+    {%- for data in formdata %}
+        { "{{ data.name }}", "{{ data.value }}" },
+    {%- endfor %}
+    };
+    var content = new FormUrlEncodedContent(payload);
+''';
+
+  final String kTemplateMultipartFormDataContent = r'''
+    var content = new MultipartFormDataContent
+    {
+{%- for data in formdata %}
+{%- if data.type == "text" %}
+        { new StringContent("{{ data.value }}"), "{{ data.name }}" },
+{%- else %}
+        {
+            new StreamContent(File.OpenRead("{{ data.value }}")), 
+            "{{ data.name }}", 
+            "{{ data.value }}"
+        },
+{%- endif %}
+{%- endfor %}
+    }
+''';
+
+  final String kTemplateRawBody = '''
+    var payload = """
+{{ body }}
+""";
+    var content = new StringContent(payload, null, "{{ mediaType }}");
+''';
+
+  final String kStringContentSetup = '''
+    request.Content = content;
+''';
+
+  final kStringEnd = '''
+    HttpResponseMessage response = await client.SendAsync(request);
+
+    Console.WriteLine(response.StatusCode);
+    Console.WriteLine(await response.Content.ReadAsStringAsync());
+}
+''';
+
+  String? getCode(RequestModel requestModel, {String? boundary}) {
+    try {
+      StringBuffer result = StringBuffer();
+
+      // Include necessary C# namespace
+      String formdataImport = requestModel.hasFormData //
+          ? (requestModel.hasFileInFormData ? "multipart" : "urlencoded")
+          : "nodata";
+      result.writeln(jj.Template(kTemplateNamespaces).render({"formdata": formdataImport}));
+
+      // Set request URL
+      var (uri, _) = getValidRequestUri(requestModel.url, requestModel.enabledRequestParams);
+      if (uri != null) {
+        result.writeln(jj.Template(kTemplateUri).render({"uri": uri}));
+      }
+
+      // Initialize HttpClient and create HttpRequestMessage
+      result.writeln(jj.Template(kTemplateHttpClientAndRequest).render({
+        "method": requestModel.method.name,
+      }));
+
+      // Set request headers
+      var headers = requestModel.enabledHeadersMap;
+      if (headers.isNotEmpty) {
+        result.writeln(jj.Template(kTemplateHeaders).render({"headers": headers}));
+      }
+
+      // Set request body if exists
+      if (kMethodsWithBody.contains(requestModel.method) && requestModel.hasBody) {
+        var requestBody = requestModel.requestBody;
+
+        if (!requestModel.hasFormData && requestBody != null && requestBody.isNotEmpty) {
+          // if the request body is not formdata then render raw text body
+          result.writeln(jj.Template(kTemplateRawBody).render({
+            "body": requestBody,
+            "mediaType": requestModel.requestBodyContentType.header,
+          }));
+        } else if (requestModel.hasFormData) {
+          final String renderingTemplate = requestModel.hasFileInFormData
+              ? kTemplateMultipartFormDataContent //
+              : kTemplateFormUrlEncodedContent;
+
+          result.writeln(jj.Template(renderingTemplate).render({
+            "formdata": requestModel.formDataMapList,
+          }));
+        }
+
+        result.writeln(kStringContentSetup);
+      }
+
+      // Send request and get response
+      result.write(kStringEnd);
+      return result.toString();
+    } catch (e) {
+      return null;
+    }
+  }
+}