feat: js fetch

lib/codegen/js/fetch.dart

@@ -0,0 +1,95 @@
+import 'package:apidash/consts.dart';
+import 'package:jinja/jinja.dart' as jj;
+import 'package:apidash/utils/utils.dart'
+    show requestModelToHARJsonRequest, padMultilineString;
+import 'package:apidash/models/models.dart' show RequestModel;
+
+// ignore: camel_case_types
+class FetchCodeGen {
+  FetchCodeGen({this.isNodeJs = false});
+
+  final bool isNodeJs;
+
+  String kStringImportNode = """import fetch from 'node-fetch';
+
+""";
+
+  String kTemplateStart = """let url = '{{url}}';
+
+let options = {
+  method: '{{method}}'
+""";
+
+  String kTemplateHeader = """,
+  headers: {{headers}}
+""";
+
+  String kTemplateBody = """,
+  body: 
+{{body}}
+""";
+
+  String kStringRequest = """
+
+};
+
+let status;
+fetch(url, options)
+    .then(res => {
+        status = res.status;
+        return res.json()
+    })
+    .then(body => {
+        console.log(status);
+        console.log(body);
+    })
+    .catch(err => {
+        console.log(status);
+        console.error('error:' + err);
+    });
+""";
+
+  String? getCode(
+    RequestModel requestModel,
+    String defaultUriScheme,
+  ) {
+    try {
+      String result = isNodeJs ? kStringImportNode : "";
+
+      String url = requestModel.url;
+      if (!url.contains("://") && url.isNotEmpty) {
+        url = "$defaultUriScheme://$url";
+      }
+      var rM = requestModel.copyWith(url: url);
+
+      var harJson = requestModelToHARJsonRequest(rM);
+
+      var templateStart = jj.Template(kTemplateStart);
+      result += templateStart.render({
+        "url": harJson["url"],
+        "method": harJson["method"],
+      });
+
+      var headers = harJson["headers"];
+      if (headers.isNotEmpty) {
+        var templateHeader = jj.Template(kTemplateHeader);
+        var m = {};
+        for (var i in headers) {
+          m[i["name"]] = i["value"];
+        }
+        result += templateHeader
+            .render({"headers": padMultilineString(kEncoder.convert(m), 2)});
+      }
+
+      if (harJson["postData"]?["text"] != null) {
+        var templateBody = jj.Template(kTemplateBody);
+        result += templateBody
+            .render({"body": kEncoder.convert(harJson["postData"]["text"])});
+      }
+      result += kStringRequest;
+      return result;
+    } catch (e) {
+      return null;
+    }
+  }
+}