feat: Add/update bank processor for HDFC

Services/BankStatementProcessor/bankStatementProcessor-HDFC.js

@@ -0,0 +1,215 @@
+/**
+ * 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,
+  };
+
+  let headerRowIndex = -1;
+  let keyMapping = {};
+  const transactions = [];
+  let voucher_number = 1;
+
+  // Bank Details Extraction
+  for (let i = 0; i < Math.min(15, rawData.length); i++) {
+    const row = rawData[i];
+    for (const key in row) {
+      if (row.hasOwnProperty(key)) {
+        const value = row[key];
+        if (typeof value === 'string') {
+          const lowerValue = value.toLowerCase();
+          if (lowerValue.includes("bank name")) {
+            const adjacentKey = Object.keys(row).find(k => k !== key && row[k] != null);
+            if (adjacentKey) {
+              bank_details.bank_name = row[adjacentKey] || null;
+            }
+          } else if (lowerValue.includes("account holder name") || lowerValue.includes("account name")) {
+            const adjacentKey = Object.keys(row).find(k => k !== key && row[k] != null);
+            if (adjacentKey) {
+              bank_details.account_holder_name = row[adjacentKey] || null;
+            }
+          } else if (lowerValue.includes("account no") || lowerValue.includes("account number")) {
+            const adjacentKey = Object.keys(row).find(k => k !== key && row[k] != null);
+            if (adjacentKey) {
+              bank_details.account_no = row[adjacentKey] || null;
+            }
+          } else if (lowerValue.includes("ifsc") || lowerValue.includes("ifs")) {
+            const adjacentKey = Object.keys(row).find(k => k !== key && row[k] != null);
+            if (adjacentKey) {
+              bank_details.ifsc = row[adjacentKey] || null;
+            } else {
+              bank_details.ifsc = value
+            }
+          } else if (lowerValue.includes("branch name")) {
+            const adjacentKey = Object.keys(row).find(k => k !== key && row[k] != null);
+            if (adjacentKey) {
+              bank_details.branch_name = row[adjacentKey] || null;
+            }
+          } else if (lowerValue.includes("branch code")) {
+            const adjacentKey = Object.keys(row).find(k => k !== key && row[k] != null);
+            if (adjacentKey) {
+              bank_details.branch_code = row[adjacentKey] || null;
+            }
+          } else if (lowerValue.includes("address")) {
+            const adjacentKey = Object.keys(row).find(k => k !== key && row[k] != null);
+             if (adjacentKey && typeof row[adjacentKey] === 'string') {
+                bank_details.address = (bank_details.address || '') + (row[adjacentKey] || '');
+             } else if (typeof value === 'string') {
+                 bank_details.address = (bank_details.address || '') + value;
+             }
+          }
+        }
+      }
+    }
+  }
+
+  // Header Row Identification & Key Mapping
+  for (let i = 0; i < rawData.length; i++) {
+    const row = rawData[i];
+    let hasDate = false;
+    let hasNarration = false;
+    let hasDebit = false;
+    let hasCredit = false;
+    let hasBalance = false;
+
+    for (const key in row) {
+      if (row.hasOwnProperty(key) && typeof row[key] === 'string') {
+        const lowerValue = row[key].toLowerCase();
+        if (lowerValue.includes("date")) {
+          keyMapping.dateKey = key;
+          hasDate = true;
+        } else if (lowerValue.includes("narration") || lowerValue.includes("description") || lowerValue.includes("details")) {
+          keyMapping.narrationKey = key;
+          hasNarration = true;
+        } else if (lowerValue.includes("debit") || lowerValue.includes("withdrawal")) {
+          keyMapping.debitKey = key;
+          hasDebit = true;
+        } else if (lowerValue.includes("credit") || lowerValue.includes("deposit")) {
+          keyMapping.creditKey = key;
+          hasCredit = true;
+        } else if (lowerValue.includes("balance") || lowerValue.includes("closing balance")) {
+          keyMapping.balanceKey = key;
+          hasBalance = true;
+        }
+      }
+    }
+
+    if (hasDate && hasNarration && (hasDebit || hasCredit) && hasBalance) {
+      headerRowIndex = i;
+      break;
+    }
+  }
+
+  // Transaction Processing
+  if (headerRowIndex !== -1) {
+    for (let i = headerRowIndex + 1; i < rawData.length; i++) {
+      const row = rawData[i];
+      if (!row || Object.keys(row).length === 0) {
+        continue; // Skip empty rows
+      }
+      let date = row[keyMapping.dateKey] || null;
+      let desc = row[keyMapping.narrationKey] ? (typeof row[keyMapping.narrationKey] === 'string' ? row[keyMapping.narrationKey].trim() : String(row[keyMapping.narrationKey])) : null;
+      let debit = row[keyMapping.debitKey] || null;
+      let credit = row[keyMapping.creditKey] || null;
+      let balance = row[keyMapping.balanceKey] || null;
+
+      if (!date && !desc && !debit && !credit && !balance) continue;
+
+      let amount = null;
+      let type = null;
+
+      if (debit && !isNaN(Number(debit))) {
+        amount = Math.abs(Number(debit.toString().replace(/[^0-9.-]+/g,"")));
+        type = "withdrawal";
+      } else if (credit && !isNaN(Number(credit))) {
+        amount = Math.abs(Number(credit.toString().replace(/[^0-9.-]+/g,"")));
+        type = "deposit";
+      }
+      if (!amount && amount !== 0) continue;
+
+      if (balance && !isNaN(Number(balance))) {
+          balance = Number(balance.toString().replace(/[^0-9.-]+/g,""));
+      } else {
+        continue
+      }
+
+      if (date) {
+          try {
+              if (typeof date === 'number') {
+                  // Excel date serial number
+                  const excelEpoch = new Date(Date.UTC(1899, 11, 31));
+                  const javascriptDate = new Date(excelEpoch.getTime() + (date * 24 * 60 * 60 * 1000));
+                  const year = javascriptDate.getFullYear();
+                  const month = String(javascriptDate.getMonth() + 1).padStart(2, '0');
+                  const day = String(javascriptDate.getDate()).padStart(2, '0');
+                  date = `${year}-${month}-${day}`;
+              } else {
+              const dateFormats = [
+                /^\d{2}[./-]\d{2}[./-]\d{4}$/,
+                /^\d{4}[./-]\d{2}[./-]\d{2}$/,
+                /^\d{2}-\w{3}-\d{4}$/i
+              ];
+
+              if (dateFormats[0].test(date)) {
+                  const parts = date.split(/[-/.]/);
+                  const day = parts[0];
+                  const month = parts[1];
+                  const year = parts[2];
+                  date = `${year}-${month}-${day}`;
+              } else if (dateFormats[1].test(date)) {
+                const parts = date.split(/[-/.]/);
+                const year = parts[0];
+                const month = parts[1];
+                const day = parts[2];
+                date = `${year}-${month}-${day}`;
+              }
+               else if (dateFormats[2].test(date)) {
+                const parts = date.split('-');
+                const day = parts[0];
+                const month = parts[1];
+                const year = parts[2];
+                const monthNumber = new Date(Date.parse(month +" 1, 2000")).getMonth() + 1
+                date = `${year}-${String(monthNumber).padStart(2,'0')}-${day}`;
+                } else {
+                  date = null
+              }
+            }
+          }
+           catch (e) {
+               date = null
+           }
+      }
+       if (!date) continue;
+      const transaction = {
+        date: date,
+        voucher_number: voucher_number++,
+        amount: amount,
+        desc: desc,
+        from: null,
+        to: null,
+        type: type,
+        balance: balance
+      };
+      transactions.push(transaction);
+    }
+  }
+
+  return {
+    bank_details: bank_details,
+    transactions: transactions
+  };
+}
+
+module.exports = processBankStatement;

src/BANK.js

@@ -1,6 +1,7 @@
 const BANK = {
     BOB: "bob",
     IOB: "iob",
+    HDFC: "hdfc",
 }
 
 module.exports = BANK;