Use FormData and multipart/form-data instead of application/urlencoded for requests

lib/fetch.js

@@ -1,34 +1,43 @@
-import https from 'https';
-import qs from 'qs';
+import FormData from 'form-data';
+
+export default function fetch(path, data = {}) {
+  const form = new FormData();
+  const keys = Object.keys(data);
+
+  for (let key of keys) {
+    console.log(key, data[key]);
+    form.append(key, data[key]);
+  }
 
-export default function fetch(path, data) {
-  const post = qs.stringify(data);
 
   return new Promise((resolve, reject) => {
-    const req = https.request({
-      hostname: 'api.telegram.org',
-      method: data ? 'POST' : 'GET',
-      path: '/bot' + path,
-      headers: {
-        'Content-Type': 'application/x-www-form-urlencoded'
+    form.getLength((err, length) => {
+      if (err) {
+        return reject(err);
       }
-    }, response => {
-      return getBody(response).then(res => {
-        try {
-          let json = JSON.parse(res);
-          resolve(json);
-        } catch(e) {
-          reject(e);
-        }
-      }).catch(reject);
-    });
 
-    if (post) {
-      req.write(post);
-    }
-    req.end();
-  }).catch(err => {
-    console.error('Error sending request', err);
+      form.submit({
+        protocol: 'https:',
+        host: 'api.telegram.org',
+        path: '/bot' + path,
+        headers: {
+          'Content-Length': length
+        }
+      }, (error, response) => {
+        if (error) {
+          return reject(error);
+        }
+
+        return getBody(response).then(body => {
+          try {
+            let json = JSON.parse(body);
+            resolve(json);
+          } catch(e) {
+            reject(e);
+          }
+        }).catch(reject);
+      });
+    });
   });
 }