feat : admin feature

src/services/admin.auth.service.js

@@ -0,0 +1,40 @@
+const db = require('../config/db');
+const { comparePassword, hashPassword } = require('../util/hash');
+const axios = require('axios');
+
+async function findAdminByUserName(customerNo) {
+  const result = await db.query('SELECT * FROM admin WHERE username = $1', [
+    customerNo,
+  ]);
+  return result.rows[0];
+}
+
+async function validateAdmin(customerNo, password) {
+  const user = await findAdminByUserName(customerNo);
+  if (!user) return null;
+  const isMatch = await comparePassword(password, user.password);
+  return isMatch ? user : null;
+}
+
+async function getCustomerDetails(customerNo) {
+  try {
+    const response = await axios.get(
+      'http://localhost:8686/kccb/cbs/custInfo/details',
+      { params: { stcustno: customerNo } }
+    );
+    const details = response.data;
+    const processedDetails = details.map((acc) => ({
+      ...acc,
+      activeAccounts: details.length,
+      cifNumber: customerNo,
+    }));
+    return processedDetails;
+  } catch (error) {
+    logger.error('while fetching customer details', error);
+    throw new Error(
+      'API call failed: ' + (error.response?.data?.message || error.message)
+    );
+  }
+}
+
+module.exports = { validateAdmin, findAdminByUserName,getCustomerDetails };