feat: added change tpin route

src/controllers/auth.controller.js

@@ -169,6 +169,27 @@ async function setTpin(req, res) {
   }
 }
 
+async function changeTpin(req, res) {
+  const customerNo = req.user;
+  try {
+    const user = await authService.findUserByCustomerNo(customerNo);
+    if (!user) return res.status(404).json({ error: 'USER_NOT_FOUND' });
+    if (!user.tpin)
+      return res.status(400).json({ error: 'USER_DOESNT_HAVE_A_TPIN' });
+    const { oldTpin, newTpin } = req.body;
+    if(oldTpin !== user.tpin)
+      return res.status(400).json({ error: 'TPIN_DOESNT_MATCH' });
+
+    if (!/^\d{6}$/.test(newTpin))
+      return res.status(400).json({ error: 'INVALID_TPIN_FORMAT' });
+    authService.setTpin(customerNo, tpin);
+    return res.json({ message: 'TPIN_SET' });
+  } catch (error) {
+    logger.error(error);
+    return res.status(500).json({ error: 'SOMETHING_WENT_WRONG' });
+  }
+}
+
 async function setLoginPassword(req, res) {
   const customerNo = req.user;
   try {
@@ -325,6 +346,7 @@ module.exports = {
   login,
   tpin,
   setTpin,
+  changeTpin,
   setLoginPassword,
   setTransactionPassword,
   fetchUserDetails,