From f73a7fc755141171b2b8e8b832fa5531734dd9cd Mon Sep 17 00:00:00 2001
From: Nishchal Gautam <cyberhck@users.noreply.github.com>
Date: Thu, 1 Oct 2020 10:40:44 +0700
Subject: [PATCH 1/3] test(ContentTypeMiddleware): add tests

---
 src/middlewares/ContentTypeMiddleware.spec.ts | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 src/middlewares/ContentTypeMiddleware.spec.ts

diff --git a/src/middlewares/ContentTypeMiddleware.spec.ts b/src/middlewares/ContentTypeMiddleware.spec.ts
new file mode 100644
index 00000000..80b67448
--- /dev/null
+++ b/src/middlewares/ContentTypeMiddleware.spec.ts
@@ -0,0 +1,21 @@
+import {ContentTypeMiddleware} from "./ContentTypeMiddleware";
+import {IFetchRequest} from "./FetchMiddleware";
+
+describe("ContentTypeMiddleware", () => {
+    it("should add a content type application/json by default", () => {
+        const spy = jest.fn((options: IFetchRequest) => {
+            const contentType = options.headers && options.headers["content-type"];
+            expect(contentType).toBe("application/json");
+        });
+        const mw = new ContentTypeMiddleware();
+        mw.process({}, spy);
+    });
+    it("should accept a content type in constructor if we want to change it", () => {
+        const spy = jest.fn((options: IFetchRequest) => {
+            const contentType = options.headers && options.headers["content-type"];
+            expect(contentType).toBe("text/plain");
+        });
+        const mw = new ContentTypeMiddleware("text/plain");
+        mw.process({}, spy);
+    });
+});

From b4848f7dfa5bc3aec0ef70da34c3c2789ae54c23 Mon Sep 17 00:00:00 2001
From: Nishchal Gautam <cyberhck@users.noreply.github.com>
Date: Thu, 1 Oct 2020 10:41:20 +0700
Subject: [PATCH 2/3] Create ContentTypeMiddleware.ts

---
 src/middlewares/ContentTypeMiddleware.ts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 src/middlewares/ContentTypeMiddleware.ts

diff --git a/src/middlewares/ContentTypeMiddleware.ts b/src/middlewares/ContentTypeMiddleware.ts
new file mode 100644
index 00000000..20b10ef4
--- /dev/null
+++ b/src/middlewares/ContentTypeMiddleware.ts
@@ -0,0 +1,15 @@
+import {IMiddleware} from "../Stack";
+import {IFetchRequest, IFetchResponse} from "./FetchMiddleware";
+
+export class ContentTypeMiddleware implements IMiddleware<IFetchRequest, Promise<IFetchResponse<any>>> {
+    constructor(private contentType: string = "application/json") {
+    }
+
+    public process(options: IFetchRequest, next: (nextOptions: IFetchRequest) => Promise<IFetchResponse<any>>): Promise<IFetchResponse<any>> {
+        if (!options.headers) {
+            options.headers = {};
+        }
+        options.headers["content-type"] = this.contentType;
+        return next(options);
+    }
+}

From c2de7e8fdc480aa76f316888bf2fd9d218f30058 Mon Sep 17 00:00:00 2001
From: Nishchal Gautam <cyberhck@users.noreply.github.com>
Date: Thu, 1 Oct 2020 10:42:10 +0700
Subject: [PATCH 3/3] feat(ContentTypeMiddleware): add middleware

---
 src/middlewares/index.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/middlewares/index.ts b/src/middlewares/index.ts
index 0c663fac..8c697c6d 100644
--- a/src/middlewares/index.ts
+++ b/src/middlewares/index.ts
@@ -7,3 +7,4 @@ export * from "./FetchMiddleware";
 export * from "./MockMiddleware";
 export * from "./CacheMiddleware";
 export * from "./IncludeCredentialsMiddleware";
+export * from "./ContentTypeMiddleware";