Initial commit

393ded65 · Adrien Dorsaz · 393ded65 · 393ded65 · 393ded65
Commit 393ded65 authored Oct 27, 2021 by Adrien Dorsaz
--- a/package-lock.json
+++ b/package-lock.json
--- a/package.json
+++ b/package.json
+{
+  "description": "a dumb example to get access token and refresh it from LinuxFr.org",
+  "private": "false",
+  "license": "MIT",
+  "type": "module",
+  "dependencies": {
+    "koa": "^2.13.4",
+    "koa2-router": "^2.0.1",
+    "node-fetch": "^3.0.0"
+  }
+}
--- a/src/app.js
+++ b/src/app.js
+import Koa from 'koa';
+import Router from 'koa2-router';
+import fetch from 'node-fetch';
+
+const app = new Koa();
+
+process.env.OAUTH2_AUTHORIZATION_SERVER = 'https://linuxfr.org/api/oauth';
+process.env.OAUTH2_CLIENT_ID = 'your-client-id';
+process.env.OAUTH2_CLIENT_SECRET = 'your-secret-id';
+process.env.OAUTH2_REDIRECT_URI = 'https://localhost:3000/';
+
+// Basic logger
+app.use(async (ctx, next) => {
+  await next();
+  const responseTime = ctx.get('X-Response-Time');
+  console.log(`${ctx.method} ${ctx.url} ${ctx.request.body || '-'} - ${responseTime}`);
+});
+
+// Record Response Time
+app.use(async (ctx, next) => {
+  const startTimestamp = Date.now();
+  await next();
+  const ms = Date.now() - startTimestamp;
+  ctx.set('X-Response-Time', `${ms}ms`);
+});
+
+// Index and redirect URI
+
+const indexRouter = new Router();
+app.use(indexRouter);
+
+indexRouter.get('/', async (ctx) => {
+  if (ctx.request.query.code) {
+    console.log('code found: ', ctx.request.query.code);
+    const oauthAccessTokenParams = new URLSearchParams();
+    oauthAccessTokenParams.append('client_id', process.env.OAUTH2_CLIENT_ID);
+    oauthAccessTokenParams.append('client_secret', process.env.OAUTH2_CLIENT_SECRET);
+    oauthAccessTokenParams.append('redirect_uri', process.env.OAUTH2_REDIRECT_URI);
+    oauthAccessTokenParams.append('grant_type', 'authorization_code');
+    oauthAccessTokenParams.append('code', ctx.request.query.code);
+    const oauthAccessTokenResponse = await fetch(
+      `${process.env.OAUTH2_AUTHORIZATION_SERVER}/token`,
+      {
+        method: 'POST',
+        body: oauthAccessTokenParams,
+    });
+    const accessTokenResponseBody = await oauthAccessTokenResponse.json();
+    console.log(`Access token response (status: ${oauthAccessTokenResponse.status}): `, accessTokenResponseBody);
+
+    const oauthRefreshTokenParams = new URLSearchParams();
+    oauthRefreshTokenParams.append('client_id', process.env.OAUTH2_CLIENT_ID);
+    oauthRefreshTokenParams.append('client_secret', process.env.OAUTH2_CLIENT_SECRET);
+    oauthRefreshTokenParams.append('redirect_uri', process.env.OAUTH2_REDIRECT_URI);
+    oauthRefreshTokenParams.append('grant_type', 'refresh_token');
+    oauthRefreshTokenParams.append('refresh_token', accessTokenResponseBody.refresh_token);
+    const oauthRefreshTokenResponse = await fetch(
+      `${process.env.OAUTH2_AUTHORIZATION_SERVER}/token`,
+      {
+        method: 'POST',
+        body: oauthRefreshTokenParams,
+    });
+    const body = await oauthRefreshTokenResponse.json();
+    console.log(`Refresh token response (status: ${oauthRefreshTokenResponse.status}): `, body);
+  }
+  ctx.body=`
+    <html>
+      <body>
+        <a href='${process.env.OAUTH2_AUTHORIZATION_SERVER}/authorize?client_id=${process.env.OAUTH2_CLIENT_ID}&response_type=code&redirect_uri=${process.env.OAUTH2_REDIRECT_URI}'>Login on Linuxfr.org</a>
+      </body>
+    </html>`;
+});
+
+app.listen(3001);