feat(service): added host parameter for code source url

Author: StephanGerbeth

functions/index.js

@@ -6,25 +6,25 @@ const express = require('express');
 const cors = require('cors');
 const codeToSVG = require('@js-basics/code-snippet-to-svg');
 
-const githubRawUrl = 'https://raw.githubusercontent.com';
+const githubRawUrl = 'raw.githubusercontent.com';
 const app = express();
 app.use(cors({ origin: true }));
 
 function getMinMax(value = '1') {
   return value.split('-');
 }
 
-function getCodeAsSVG(path, range = '1', lang, theme) {
-  const url = githubRawUrl + path;
+function getCodeAsSVG(path, query) {
+  const url = `https://${query.host || githubRawUrl}${path}`;
   return request({ uri: url }).then((code) => {
-    const [min, max] = getMinMax(range);
-    return codeToSVG(code, min, max, lang, theme);
+    const [min, max] = getMinMax(query.range);
+    return codeToSVG(code, min, max, query);
   });
 }
 
 app.get(['/:account/:repo/*'], (req, res) => {
   const path = req.path.replace(/([\w-]*\/[\w-]*)(\/blob)/, '$1');
-  getCodeAsSVG(path, req.query.range, req.query.lang, req.query.theme).then((svg) => {
+  getCodeAsSVG(path, req.query).then((svg) => {
     res.setHeader('Content-Type', 'image/svg+xml');
     res.send(Buffer.from(svg));
   });
@@ -34,7 +34,7 @@ exports.default = functions.https.onRequest(app);
 
 exports.test = functions.https.onRequest((req, res) => {
   const path = '/GrabarzUndPartner/gp-vue-boilerplate/master/src/components/molecules/LinkList.vue';
-  getCodeAsSVG(path, req.query.range, req.query.lang, req.query.theme).then((svg) => {
+  getCodeAsSVG(path, req.query).then((svg) => {
     res.setHeader('Content-Type', 'image/svg+xml');
     res.send(Buffer.from(svg));
   });