Merge pull request #818 from WannaCry016/patch-5

Fix Issue #630 Unable to override Content-Type header charset

packages/apidash_core/lib/extensions/map_extensions.dart

@@ -23,4 +23,10 @@ extension MapExtension on Map {
   String? getValueContentType() {
     return this[getKeyContentType()];
   }
+
+  Map removeKeyContentType() {
+    removeWhere(
+        (key, value) => key.toLowerCase() == HttpHeaders.contentTypeHeader);
+    return this;
+  }
 }

packages/apidash_core/lib/services/http_service.dart

@@ -4,6 +4,7 @@ import 'dart:io';
 import 'package:http/http.dart' as http;
 import 'package:seed/seed.dart';
 import '../consts.dart';
+import '../extensions/extensions.dart';
 import '../models/models.dart';
 import '../utils/utils.dart';
 import 'http_client_manager.dart';
@@ -33,6 +34,7 @@ Future<(HttpResponse?, Duration?, String?)> sendHttpRequest(
   if (uriRec.$1 != null) {
     Uri requestUrl = uriRec.$1!;
     Map<String, String> headers = requestModel.enabledHeadersMap;
+    bool overrideContentType = false;
     HttpResponse? response;
     String? body;
     try {
@@ -43,16 +45,15 @@ Future<(HttpResponse?, Duration?, String?)> sendHttpRequest(
 
         if (kMethodsWithBody.contains(requestModel.method)) {
           var requestBody = requestModel.body;
-          if (requestBody != null && !isMultiPartRequest) {
+          if (requestBody != null &&
-            var contentLength = utf8.encode(requestBody).length;
+              !isMultiPartRequest &&
-            if (contentLength > 0) {
+              requestBody.isNotEmpty) {
-              body = requestBody;
+            body = requestBody;
-              headers[HttpHeaders.contentLengthHeader] =
+            if (requestModel.hasContentTypeHeader) {
-                  contentLength.toString();
+              overrideContentType = true;
-              if (!requestModel.hasContentTypeHeader) {
+            } else {
-                headers[HttpHeaders.contentTypeHeader] =
+              headers[HttpHeaders.contentTypeHeader] =
-                    requestModel.bodyContentType.header;
+                  requestModel.bodyContentType.header;
-              }
             }
           }
           if (isMultiPartRequest) {
@@ -82,18 +83,28 @@ Future<(HttpResponse?, Duration?, String?)> sendHttpRequest(
             return (convertedMultiPartResponse, stopwatch.elapsed, null);
           }
         }
-        response = switch (requestModel.method) {
+        switch (requestModel.method) {
-          HTTPVerb.get => await client.get(requestUrl, headers: headers),
+          case HTTPVerb.get:
-          HTTPVerb.head => await client.head(requestUrl, headers: headers),
+            response = await client.get(requestUrl, headers: headers);
-          HTTPVerb.post =>
+            break;
-            await client.post(requestUrl, headers: headers, body: body),
+          case HTTPVerb.head:
-          HTTPVerb.put =>
+            response = await client.head(requestUrl, headers: headers);
-            await client.put(requestUrl, headers: headers, body: body),
+            break;
-          HTTPVerb.patch =>
+          case HTTPVerb.post:
-            await client.patch(requestUrl, headers: headers, body: body),
+          case HTTPVerb.put:
-          HTTPVerb.delete =>
+          case HTTPVerb.patch:
-            await client.delete(requestUrl, headers: headers, body: body),
+          case HTTPVerb.delete:
-        };
+            final request = prepareHttpRequest(
+              url: requestUrl,
+              method: requestModel.method.name.toUpperCase(),
+              headers: headers,
+              body: body,
+              overrideContentType: overrideContentType,
+            );
+            final streamed = await client.send(request);
+            response = await http.Response.fromStream(streamed);
+            break;
+        }
       }
       if (apiType == APIType.graphql) {
         var requestBody = getGraphQLBody(requestModel);
@@ -131,3 +142,27 @@ Future<(HttpResponse?, Duration?, String?)> sendHttpRequest(
 void cancelHttpRequest(String? requestId) {
   httpClientManager.cancelRequest(requestId);
 }
+
+http.Request prepareHttpRequest({
+  required Uri url,
+  required String method,
+  required Map<String, String> headers,
+  required String? body,
+  bool overrideContentType = false,
+}) {
+  var request = http.Request(method, url);
+  if (headers.getValueContentType() != null) {
+    request.headers[HttpHeaders.contentTypeHeader] =
+        headers.getValueContentType()!;
+    if (!overrideContentType) {
+      headers.removeKeyContentType();
+    }
+  }
+  if (body != null) {
+    request.body = body;
+    headers[HttpHeaders.contentLengthHeader] =
+        request.bodyBytes.length.toString();
+  }
+  request.headers.addAll(headers);
+  return request;
+}

test/models/http_request_models.dart

@@ -441,3 +441,28 @@ const httpRequestModelPost11 = HttpRequestModel(
 "text": "I LOVE Flutter"
 }""",
 );
+
+/// POST request model with default (utf-8) content type charset
+const httpRequestModelPost12 = HttpRequestModel(
+  method: HTTPVerb.post,
+  url: 'https://api.apidash.dev/case/lower',
+  bodyContentType: ContentType.json,
+  body: r"""{
+"text": "I LOVE Flutter"
+}""",
+);
+
+/// POST request model with charset override (latin1)
+const httpRequestModelPost13 = HttpRequestModel(
+  method: HTTPVerb.post,
+  url: 'https://api.apidash.dev/case/lower',
+  headers: [
+    NameValueModel(
+        name: 'Content-Type', value: 'application/json; charset=latin1'),
+  ],
+  isHeaderEnabledList: [true],
+  bodyContentType: ContentType.json,
+  body: r"""{
+"text": "I LOVE Flutter"
+}""",
+);

test/models/request_models.dart

@@ -233,8 +233,23 @@ const requestModelGetBadSSL = RequestModel(
   httpRequestModel: httpRequestModelGetBadSSL,
 );
 
+/// POST request model with content type override having no charset
 const requestModelPost11 = RequestModel(
   id: 'post11',
   apiType: APIType.rest,
   httpRequestModel: httpRequestModelPost11,
 );
+
+/// POST request model with default (utf-8) content type charset
+const requestModelPost12 = RequestModel(
+  id: 'post12',
+  apiType: APIType.rest,
+  httpRequestModel: httpRequestModelPost12,
+);
+
+/// POST request model with charset override (latin1)
+const requestModelPost13 = RequestModel(
+  id: 'post13',
+  apiType: APIType.rest,
+  httpRequestModel: httpRequestModelPost13,
+);

test/models/response_model_test.dart

@@ -58,10 +58,36 @@ void main() {
     final responseData = responseModel.fromResponse(response: responseRec.$1!);
     expect(responseData.statusCode, 200);
     expect(responseData.body, '{"data":"i love flutter"}');
-    expect(responseData.contentType, 'application/json; charset=utf-8');
+    expect(responseData.contentType, 'application/json');
     expect(responseData.requestHeaders?['content-type'], 'application/json');
   });
 
+  test('Testing default contentType charset added by dart', () async {
+    var responseRec = await sendHttpRequest(
+      requestModelPost12.id,
+      requestModelPost12.apiType,
+      requestModelPost12.httpRequestModel!,
+    );
+
+    final responseData = responseModel.fromResponse(response: responseRec.$1!);
+    expect(responseData.statusCode, 200);
+    expect(responseData.requestHeaders?['content-type'],
+        'application/json; charset=utf-8');
+  });
+
+  test('Testing latin1 charset added by user', () async {
+    var responseRec = await sendHttpRequest(
+      requestModelPost13.id,
+      requestModelPost13.apiType,
+      requestModelPost13.httpRequestModel!,
+    );
+
+    final responseData = responseModel.fromResponse(response: responseRec.$1!);
+    expect(responseData.statusCode, 200);
+    expect(responseData.requestHeaders?['content-type'],
+        'application/json; charset=latin1');
+  });
+
   test('Testing fromResponse for Bad SSL with certificate check', () async {
     var responseRec = await sendHttpRequest(
       requestModelGetBadSSL.id,