feat: Add/update bank processor for HDFC

BANK.js

@@ -0,0 +1,7 @@
+const BANK = {
+    BOB: "bob",
+    IOB: "iob",
+    HDFC: "hdfc",
+}
+
+module.exports = BANK;

Services/BankStatementProcessor/bankStatementProcessor-HDFC.js

@@ -0,0 +1,198 @@
+/**
+ * Generated by Gemini AI - Attempt 3
+ * Processes bank statement data from Excel
+ * @param {Array} rawData - Array of objects from bank statement Excel
+ * @returns {Object} Processed bank statement data
+ */
+function processBankStatement(rawData) {
+  const bank_details = {
+    bank_name: null,
+    opening_balance: 0,
+    ifsc: null,
+    address: null,
+    city: null,
+    account_no: null,
+    account_holder_name: null,
+    branch_name: null,
+    branch_code: null
+  };
+  const transactions = [];
+  let headerRowIndex = -1;
+  let headerKeys = {};
+  let voucher_number = 1;
+
+  // Helper function to format dates to 'YYYY-MM-DD'
+  function formatDate(dateString) {
+    try {
+      if (!dateString) return null;
+
+      let date;
+
+      // Attempt to parse various date formats
+      if (typeof dateString === 'number') {
+          date = new Date((dateString - 25569) * 86400 * 1000); // Excel serial date
+      }
+      else if (typeof dateString === 'string') {
+          date = new Date(dateString);  // Attempt standard parsing
+          if(isNaN(date)){ // if standard parsing fails.
+             const dateParts = dateString.split(/[-/]/);
+             if (dateParts.length === 3) {
+                const day = parseInt(dateParts[0], 10);
+                const month = parseInt(dateParts[1], 10) - 1;
+                const year = parseInt(dateParts[2], 10);
+                date = new Date(year, month, day);
+              }
+          }
+      } else {
+          return null;
+      }
+
+
+      if (isNaN(date)) return null;
+
+      const year = date.getFullYear();
+      const month = String(date.getMonth() + 1).padStart(2, '0');
+      const day = String(date.getDate()).padStart(2, '0');
+      return `${year}-${month}-${day}`;
+    } catch (e) {
+      console.error("Error formatting date:", dateString, e);
+      return null;
+    }
+  }
+
+  // Helper function to convert to number, handling null/undefined/string values.
+    function convertToNumber(value) {
+        if (value === null || value === undefined) {
+            return 0;
+        }
+        const num = Number(value);
+        return isNaN(num) ? 0 : num;
+    }
+
+
+  // 1. Extract Bank Details
+  for (let i = 0; i < Math.min(15, rawData.length); i++) { // Check first 15 rows
+    const row = rawData[i];
+    for (const key in row) {
+      const value = row[key];
+      if (typeof value === 'string') {
+        if (!bank_details.bank_name && value.includes('BANK')) {
+          bank_details.bank_name = value.split('BANK')[0].trim() + " BANK";
+        }
+        if (!bank_details.account_holder_name && value.toUpperCase().includes('MR') || value.toUpperCase().includes('MS')) {
+          bank_details.account_holder_name = value;
+        }
+
+        if (!bank_details.address && (value.toUpperCase().includes('ADDRESS') || value.toUpperCase().includes('ADDR')))
+        {
+             bank_details.address=value;
+        }
+        if(!bank_details.city && value.toUpperCase().includes('CITY'))
+        {
+            bank_details.city=value;
+        }
+           if (!bank_details.branch_name && value.toUpperCase().includes('ACCOUNT BRANCH')) {
+              bank_details.branch_name = value;
+           }
+      }
+      if (!bank_details.ifsc) {
+           const ifscKeywords = ['IFSC', 'ifsc', 'IFSC Code', 'ifsc Code','RTGS/NEFT IFSC'];
+           if(key.toLowerCase().includes('ifsc') || ifscKeywords.some(keyword => row[key] === keyword || (typeof row[key] === 'string' && row[key]?.toUpperCase().includes(keyword.toUpperCase())))) {
+              if(typeof value === 'string' && value.length > 0){
+                 bank_details.ifsc = value;
+              }else if (typeof value === 'string' && value.length==0 && typeof row[key] === 'string'){
+                 bank_details.ifsc = row[key];
+              } else if(typeof row[key] === 'string'){
+                 bank_details.ifsc = row[key];
+              }
+           }
+
+      }
+      if(!bank_details.account_no && (key.toLowerCase().includes('account no') || key.toLowerCase().includes('account number')))
+      {
+            if(typeof value === 'string' || typeof value === 'number'){
+              bank_details.account_no = value
+            }
+      }
+    }
+  }
+
+  // 2. Identify Header Row and Keys
+  for (let i = 0; i < rawData.length; i++) {
+    const row = rawData[i];
+    const headerValues = Object.values(row).filter(value => typeof value === 'string');
+    if (
+      headerValues.includes("Date") &&
+      (headerValues.includes("Narration") || headerValues.includes("Narration or Details") || headerValues.includes("Narration/Description")) &&
+      (headerValues.includes("Withdrawal Amt.") || headerValues.includes("Withdrawal Amt. or Debit") ||headerValues.includes("Withdrawal")) &&
+      (headerValues.includes("Deposit Amt.") || headerValues.includes("Deposit Amt. or Credit")|| headerValues.includes("Deposit")) &&
+      (headerValues.includes("Closing Balance") || headerValues.includes("Closing Balance or Balance") || headerValues.includes("Balance"))
+    ) {
+      headerRowIndex = i;
+      headerKeys = row;
+      break;
+    }
+  }
+
+  if (headerRowIndex === -1) {
+    console.warn("Could not find header row.");
+    return { bank_details, transactions }; // Return empty results if header not found
+  }
+
+  const dateKey = Object.keys(headerKeys).find(key => headerKeys[key] === "Date");
+  const narrationKey = Object.keys(headerKeys).find(key => headerKeys[key] === "Narration" || headerKeys[key] === "Narration or Details" || headerKeys[key] === "Narration/Description");
+  const withdrawalKey = Object.keys(headerKeys).find(key => headerKeys[key] === "Withdrawal Amt." || headerKeys[key] === "Withdrawal Amt. or Debit" || headerKeys[key] === "Withdrawal");
+  const depositKey = Object.keys(headerKeys).find(key => headerKeys[key] === "Deposit Amt." || headerKeys[key] === "Deposit Amt. or Credit" || headerKeys[key] === "Deposit");
+  const balanceKey = Object.keys(headerKeys).find(key => headerKeys[key] === "Closing Balance" || headerKeys[key] === "Closing Balance or Balance" || headerKeys[key] === "Balance");
+
+  // 3. Process Transactions
+  for (let i = headerRowIndex + 1; i < rawData.length; i++) {
+    const row = rawData[i];
+    if (!row) continue; // Skip empty rows
+
+    const dateValue = row[dateKey];
+    const desc = row[narrationKey] || "";
+    let amount = 0;
+    let type = null;
+
+    const withdrawalAmount = convertToNumber(row[withdrawalKey]);
+    const depositAmount = convertToNumber(row[depositKey]);
+
+    if (withdrawalAmount) {
+      type = "withdrawal";
+      amount = withdrawalAmount;
+    } else if (depositAmount) {
+      type = "deposit";
+      amount = depositAmount;
+    }
+
+    const balance = convertToNumber(row[balanceKey]);
+
+    const transaction = {
+      date: formatDate(dateValue),
+      voucher_number: voucher_number++,
+      amount: amount,
+      desc: desc,
+      from: null,
+      to: null,
+      type: type,
+      balance: balance
+    };
+
+    transactions.push(transaction);
+  }
+
+    const openingBalanceRow = rawData.find(row => Object.values(row).some(val => typeof val === 'string' && val.toLowerCase().includes("opening balance")));
+
+    if(openingBalanceRow){
+        for (const key in openingBalanceRow){
+            if(typeof openingBalanceRow[key] === 'number'){
+                bank_details.opening_balance = openingBalanceRow[key];
+                break;
+            }
+        }
+    }
+  return { bank_details, transactions };
+}
+
+module.exports = processBankStatement;