Added code generator for curl-rust

Author: apoorvdwi

lib/codegen/codegen.dart

@@ -1,3 +1,4 @@
+import 'package:apidash/codegen/rust/curl-rust.dart';
 import 'package:apidash/models/models.dart' show RequestModel;
 import 'package:apidash/consts.dart';
 import 'dart/http.dart';
@@ -42,6 +43,8 @@ class Codegen {
             .getCode(requestModel, defaultUriScheme);
       case CodegenLanguage.pythonRequests:
         return PythonRequestsCodeGen().getCode(requestModel, defaultUriScheme);
+      case CodegenLanguage.rustCurl:
+        return RustCurlCodeGen().getCode(requestModel, defaultUriScheme);
     }
   }
 }

lib/codegen/rust/curl-rust.dart

@@ -0,0 +1,113 @@
+import 'dart:convert';
+import 'package:jinja/jinja.dart' as jj;
+import 'package:apidash/utils/utils.dart'
+    show getNewUuid, getValidRequestUri, padMultilineString;
+import 'package:apidash/models/models.dart' show RequestModel;
+import 'package:apidash/consts.dart';
+
+class RustCurlCodeGen {
+  final String kTemplateStart = """use curl::easy::Easy;
+use serde_json::json;
+
+fn main() {
+""";
+
+  String kTemplateUrl = """
+    let mut easy = Easy::new();
+    easy.url("{{url}}").unwrap();
+    """;
+
+  String kTemplateMethod = """easy.{{method}}(true).unwrap();
+  """;
+
+  String kTemplateRawBody =
+      """easy.post_field_copy({{body}}.as_bytes()).unwrap();
+      """;
+
+  String kTemplateJsonBody =
+      """easy.post_fields_copy(json!({{body}}).to_string().as_bytes()).unwrap();
+      """;
+
+  String kTemplateFormData = """
+    let mut form = curl::easy::Form::new();
+    {% for field in fields %}
+    form.part("{{field.name}}")
+        {% if field.type == "file" %}.file("{{field.value}}"){% else %}.contents(b"{{field.value}}"){% endif %}
+        .add();
+    {% endfor %}
+    easy.httppost(form);
+    """;
+
+  String kTemplateHeader = """easy.header("{{header}}", "{{value}}");
+  """;
+
+  final String kTemplateEnd = """easy.perform().unwrap();
+}
+""";
+
+  String? getCode(
+    RequestModel requestModel,
+    String defaultUriScheme,
+  ) {
+    try {
+      String result = "";
+
+      String url = requestModel.url;
+      if (!url.contains("://") && url.isNotEmpty) {
+        url = "$defaultUriScheme://$url";
+      }
+
+      result += kTemplateStart;
+
+      var rec = getValidRequestUri(
+        url,
+        requestModel.enabledRequestParams,
+      );
+
+      Uri? uri = rec.$1;
+
+      if (uri != null) {
+        var templateUrl = jj.Template(kTemplateUrl);
+        result += templateUrl.render({"url": uri.toString()});
+
+        var method = requestModel.method;
+        var templateMethod = jj.Template(kTemplateMethod);
+        result += templateMethod.render({"method": method.name.toLowerCase()});
+
+        var requestBody = requestModel.requestBody;
+        if (kMethodsWithBody.contains(method) && requestBody != null) {
+          if (requestModel.requestBodyContentType == ContentType.text) {
+            var templateRawBody = jj.Template(kTemplateRawBody);
+            result += templateRawBody.render({"body": requestBody});
+          } else if (requestModel.requestBodyContentType == ContentType.json) {
+            var templateJsonBody = jj.Template(kTemplateJsonBody);
+            result += templateJsonBody.render({"body": requestBody});
+          } else if (requestModel.isFormDataRequest) {
+            var templateFormData = jj.Template(kTemplateFormData);
+            result += templateFormData.render({
+              "fields": requestModel.formDataMapList,
+            });
+          }
+        }
+
+        var headersList = requestModel.enabledRequestHeaders;
+        if (headersList != null) {
+          var headers = requestModel.enabledHeadersMap;
+          for (var header in headers.keys) {
+            var templateHeader = jj.Template(kTemplateHeader);
+            result += templateHeader.render({
+              "header": header,
+              "value": headers[header],
+            });
+          }
+        }
+
+        result += kTemplateEnd;
+      }
+
+      return result;
+    } catch (e) {
+      return null;
+    }
+  }
+}

lib/consts.dart

@@ -271,7 +271,9 @@ enum CodegenLanguage {
   nodejsFetch("node.js (fetch)", "javascript", "js"),
   kotlinOkHttp("Kotlin (okhttp3)", "java", "kt"),
   pythonHttpClient("Python (http.client)", "python", "py"),
-  pythonRequests("Python (requests)", "python", "py");
+  pythonRequests("Python (requests)", "python", "py"),
+  rustCurl("Rust (curl-rust)", "rust", "rs");
+
 
   const CodegenLanguage(this.label, this.codeHighlightLang, this.ext);
   final String label;