1 files changed, 23 insertions, 0 deletions
diff --git a/backend/src/utils.js b/backend/src/utils.js
new file mode 100644
index 0000000..35587db
--- /dev/null
+++ b/backend/src/utils.js
@@ -0,0 +1,23 @@
+const jwt = require('jsonwebtoken');
+
+function getUserId(ctx) {
+  const Authorization = ctx.request.get('Authorization');
+  if (Authorization) {
+    const token = Authorization.replace('Bearer ', '');
+    const { userId } = jwt.verify(token, process.env.APP_SECRET);
+    return userId;
+  }
+
+  throw new AuthError();
+}
+
+class AuthError extends Error {
+  constructor() {
+    super('Not authorized');
+  }
+}
+
+module.exports = {
+  getUserId,
+  AuthError,
+};