feat: Add/update bank processor for HDFC

Services/BankStatementProcessor/HDFC.js/bankStatementProcessor-HDFC.js

@@ -0,0 +1,230 @@
+/**
+ * Generated by Gemini AI - Attempt 1
+ * 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
+  const formatDate = (dateString) => {
+    if (!dateString) return null;
+
+    // Attempt to parse different date formats
+    let date = new Date(dateString);
+
+    if (isNaN(date.getTime())) {
+      // Try parsing as DD/MM/YYYY
+      const parts = dateString.split('/');
+      if (parts.length === 3) {
+        date = new Date(`${parts[2]}-${parts[1]}-${parts[0]}`);
+      }
+    }
+
+     if (isNaN(date.getTime())) {
+      // Try parsing as DD-MM-YYYY
+      const parts = dateString.split('-');
+      if (parts.length === 3) {
+        date = new Date(`${parts[2]}-${parts[1]}-${parts[0]}`);
+      }
+    }
+
+    if (isNaN(date.getTime())) {
+        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}`;
+  };
+
+  // Extract bank details and find the header row
+  for (let i = 0; i < rawData.length; i++) {
+    const row = rawData[i];
+    for (const key in row) {
+      if (typeof row[key] === 'string') {
+          const lowerCaseValue = row[key].toLowerCase();
+          if (lowerCaseValue.includes('ifsc') || lowerCaseValue.includes('ifs code') || lowerCaseValue.includes('ifsc code')) {
+            const ifscValue = row[key].split(':').pop().trim() || "";
+                bank_details.ifsc = ifscValue;
+          } else if (lowerCaseValue.includes('account no') || lowerCaseValue.includes('account number') || lowerCaseValue.includes('accountnumber')) {
+              const accountValue = row[key].split(':').pop().trim() || "";
+              bank_details.account_no = accountValue;
+          }
+
+
+      }
+      if (row[key] === "Date" || row[key] === "Narration" || row[key] === "Narration or Details" || row[key] === "Withdrawal Amt." || row[key] === "Withdrawal Amt. or Debit" || row[key] === "Deposit Amt." || row[key] === "Deposit Amt. or Credit" || row[key] === "Closing Balance" || row[key] === "Closing Balance or Balance") {
+        headerRowIndex = i;
+        break;
+      }
+    }
+
+    if (headerRowIndex !== -1) {
+      break; // Header row found, exit the loop
+    }
+  }
+
+    //Extract Bank Details
+    for (let i = 0; i < headerRowIndex; i++){
+        const row = rawData[i];
+        for(const key in row){
+            const value = row[key];
+            if(typeof value === 'string'){
+                if(!bank_details.bank_name && value.toLowerCase().includes('bank')){
+                    bank_details.bank_name = value.split(' ')[0];
+                }
+
+                if(!bank_details.account_holder_name && value.toLowerCase().includes('mr') || value.toLowerCase().includes('mrs')|| value.toLowerCase().includes('ms')){
+                    bank_details.account_holder_name = value
+                }
+
+                if(!bank_details.address && value.toLowerCase().includes('address')){
+                    bank_details.address = row["__EMPTY_3"]
+                    bank_details.city = rawData[i+2]["__EMPTY_3"]
+
+                }
+            }
+            if(bank_details.ifsc == null){
+                const row = rawData[i];
+                for(const key in row){
+                    const value = row[key];
+                    if(typeof value == 'string'){
+                         if(value.toLowerCase().includes('ifsc') || value.toLowerCase().includes('rtgs/neft ifsc')|| value.toLowerCase().includes('ifs code') || value.toLowerCase().includes('ifsc code')){
+                            const ifscValue = value.split(':').pop().trim() || "";
+                            bank_details.ifsc = ifscValue.split(' ')[0]
+                             break;
+                         }
+
+                    }
+
+
+                }
+
+            }
+
+            if(bank_details.ifsc == null){
+                const row = rawData[i];
+                for(const key in row){
+
+                    if(typeof row["__EMPTY_3"] == 'string'){
+                        const value = row["__EMPTY_3"]
+                         if(value.toLowerCase().includes('ifsc') || value.toLowerCase().includes('rtgs/neft ifsc')|| value.toLowerCase().includes('ifs code') || value.toLowerCase().includes('ifsc code')){
+                            const ifscValue = value.split(':').pop().trim() || "";
+                            bank_details.ifsc = ifscValue.split(' ')[0]
+                            break;
+                         }
+                    }
+                }
+
+            }
+        }
+
+    }
+
+  if (headerRowIndex !== -1) {
+    const headerRow = rawData[headerRowIndex];
+    for (const key in headerRow) {
+        const headerValue = headerRow[key];
+
+        if (typeof headerValue === 'string') {
+            const lowerCaseHeader = headerValue.toLowerCase();
+
+            if (lowerCaseHeader === "date") {
+                headerKeys.date = key;
+            } else if (lowerCaseHeader === "narration" || lowerCaseHeader === "narration or details") {
+                headerKeys.desc = key;
+            } else if (lowerCaseHeader.includes("withdrawal")) {
+                headerKeys.withdrawal = key;
+            } else if (lowerCaseHeader.includes("deposit")) {
+                headerKeys.deposit = key;
+            } else if (lowerCaseHeader.includes("balance")) {
+                headerKeys.balance = key;
+            } else if(lowerCaseHeader === "chq./ref.no."){
+                headerKeys.ref = key;
+            }
+
+        }
+    }
+  }
+
+  // Process transactions
+  for (let i = headerRowIndex + 1; i < rawData.length; i++) {
+    const row = rawData[i];
+    if (!row) continue;
+
+    let date = null;
+    if(headerKeys.date){
+        date = formatDate(row[headerKeys.date]);
+    }
+
+    if (!date) continue; // Skip if date is missing or invalid
+
+    const desc = row[headerKeys.desc] || null;
+    let type = null;
+    let amount = null;
+
+    if (headerKeys.withdrawal && row[headerKeys.withdrawal] !== null && row[headerKeys.withdrawal] !== undefined) {
+      type = "withdrawal";
+      amount = Number(row[headerKeys.withdrawal]) || null;
+
+    } else if (headerKeys.deposit && row[headerKeys.deposit] !== null &&  row[headerKeys.deposit] !== undefined) {
+      type = "deposit";
+      amount = Number(row[headerKeys.deposit]) || null;
+    }
+
+    if (amount === null || isNaN(amount)) {
+      // If amount is not valid, attempt to extract it from the narration
+        if(desc){
+           const amountRegex = /(\d{1,3}(,\d{3})*(\.\d+)?|\.\d+)/;
+           const amountMatch = desc.match(amountRegex);
+            if (amountMatch) {
+                amount = Number(amountMatch[0].replace(/,/g, '')); // Remove commas and convert to number
+            }
+        }
+
+       if (amount === null || isNaN(amount)) continue; //Skip row for invalid amount
+    }
+
+    let balance = null;
+    if (headerKeys.balance && row[headerKeys.balance] !== null  &&  row[headerKeys.balance] !== undefined ) {
+      balance = Number(row[headerKeys.balance]) || null;
+      if(isNaN(balance)) {
+        balance = null
+      }
+    }
+
+    const transaction = {
+      date,
+      voucher_number,
+      amount,
+      desc,
+      from: null,
+      to: null,
+      type,
+      balance
+    };
+    transactions.push(transaction);
+    voucher_number++;
+  }
+
+  return { bank_details, transactions };
+}
+
+module.exports = processBankStatement;