init, dotenv, mongo, working

public/js/service/FetchService.js

@@ -0,0 +1,62 @@
+export default class FetchService {
+    constructor() {
+
+    }
+
+    async performGetHttpRequest(fetchLink, headers, query=null) {
+        if(!fetchLink || !headers) {
+            throw new Error("One or more GET request parameters was not passed.");
+        }
+        try {
+            const rawResponse = await fetch(fetchLink, {
+                method: "GET",
+                headers: headers,
+                query: (query != null) ? query : ""
+            });
+            const content = await rawResponse.json();
+            return content;
+        }
+        catch(err) {
+            console.error(`Error at fetch GET: ${err}`);
+            throw err;
+        }
+    }
+
+    async performPostHttpRequest(fetchLink, headers, body) {
+        if(!fetchLink || !headers || !body) {
+            throw new Error("One or more POST request parameters was not passed.");
+        }
+        try {
+            const rawResponse = await fetch(fetchLink, {
+                method: "POST",
+                headers: headers,
+                body: JSON.stringify(body)
+            });
+            const content = await rawResponse.json();
+            return content;
+        }
+        catch(err) {
+            console.error(`Error at fetch POST: ${err}`);
+            throw err;
+        }
+    }
+
+    async performPutHttpRequest(fetchLink, headers, body) {
+        if(!fetchLink || !headers || !body) {
+            throw new Error("One or more POST request parameters was not passed.");
+        }
+        try {
+            const rawResponse = await fetch(fetchLink, {
+                method: "PUT",
+                headers: headers,
+                body: JSON.stringify(body)
+            });
+            const content = await rawResponse.json();
+            return content;
+        }
+        catch(err) {
+            console.error(`Error at fetch PUT: ${err}`);
+            throw err;
+        }
+    }
+}