integrated acct statement with date range filter

src/controllers/transactions.controller.js

@@ -21,5 +21,27 @@ async function getLastTen(accountNumber) {
     );
   }
 }
-
-module.exports = { getLastTen };
+async function getFiltered(accountNumber, fromDate, toDate) {
+  try {
+    const response = await axios.get(
+      `http://localhost:8688/kccb/cbs/montlyacctstmt/details`,
+      {
+        params: { stacctno: accountNumber, fromdate: fromDate, todate: toDate },
+      }
+    );
+    const transactions = response.data;
+    const processedTransactions = transactions.map((tx) => ({
+      id: tx.stTransactionNumber,
+      name: tx.stTransactionDesc,
+      date: tx.stTransactionDate,
+      amount: tx.stTransactionAmount.slice(0, -3),
+      type: tx.stTransactionAmount.slice(-2),
+    }));
+    return processedTransactions;
+  } catch (error) {
+    throw new Error(
+      'API call failde: ' + (error.response?.data?.message || error.message)
+    );
+  }
+}
+module.exports = { getLastTen, getFiltered };

src/routes/transactions.route.js

@@ -3,15 +3,44 @@ const { logger } = require('../util/logger');
 
 const transactionsRoute = async (req, res) => {
   const accountNo = req.params.accountNo;
+  const { fromDate, toDate } = req.query;
+  let data;
   try {
-    const data = await transactionsController.getLastTen(accountNo);
+    if (fromDate && toDate) {
+      if (!isValidDDMMYYYY(fromDate) || !isValidDDMMYYYY(toDate)) {
+        return res.status(400).json({ error: 'INVALID_DATE_FORMAT' });
+      }
+      data = await transactionsController.getFiltered(
+        accountNo,
+        fromDate,
+        toDate
+      );
+    } else {
+      data = await transactionsController.getLastTen(accountNo);
+    }
     return res.json(data);
   } catch (error) {
-    logger.error('error retriving last 10 txns', error);
+    logger.error('error retriving transaction history', error);
     return res
       .status(500)
       .json({ message: 'error occured while fetching transactions' });
   }
 };
 
+function isValidDDMMYYYY(dateStr) {
+  if (!/^\d{8}$/.test(dateStr)) return false;
+
+  const day = parseInt(dateStr.slice(0, 2), 10);
+  const month = parseInt(dateStr.slice(2, 4), 10);
+  const year = parseInt(dateStr.slice(4), 10);
+
+  const date = new Date(year, month - 1, day);
+
+  return (
+    date.getFullYear() === year &&
+    date.getMonth() === month - 1 &&
+    date.getDate() === day
+  );
+}
+
 module.exports = transactionsRoute;