Fix Indian Bank extraction and add shared multi-format dates for all banks

app/modules/bank_statement_analyzer/parsers/indusind.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 import re, pandas as pd
 from pathlib import Path
 from .base import *
-from .common import find
+from .common import DATE_TOKEN_PATTERN, date_iso, find
 
 class IndusIndParser(BaseParser):
     bank_name='IndusInd Bank'; parser_name='IndusIndParser'
@@ -13,13 +13,13 @@ class IndusIndParser(BaseParser):
         meta.account_number=find(r'Account Number\s*:\s*([0-9X*]+)',text)
         meta.customer_id=find(r'Cust\.Reln\.No\s*:\s*([0-9X*]+)',text)
         meta.ifsc=find(r'IFSC Code\s*:\s*([A-Z0-9]+)',text)
-        m=re.search(r'Period\s*:\s*(\d{2}[/-][A-Za-z0-9]{2,3}[/-]\d{2,4})\s*(?:to|TO|-)\s*(\d{2}[/-][A-Za-z0-9]{2,3}[/-]\d{2,4})',text,re.I)
+        m=re.search(rf'Period\s*:\s*({DATE_TOKEN_PATTERN})\s*(?:to|-)\s*({DATE_TOKEN_PATTERN})', text, re.I)
         if m:
-            meta.period_from=pd.to_datetime(m.group(1),dayfirst=True).strftime('%Y-%m-%d'); meta.period_to=pd.to_datetime(m.group(2),dayfirst=True).strftime('%Y-%m-%d')
+            meta.period_from=date_iso(m.group(1)); meta.period_to=date_iso(m.group(2))
         meta.total_debit=amount(find(r'Total Withdrawal Amount\s*:\s*([\d,]+\.\d{2})',text))
         meta.total_credit=amount(find(r'Total Deposit Amount\s*:\s*([\d,]+\.\d{2})',text))
         # rows start with date and often end with amount Dr/Cr and balance Cr
-        date_re=re.compile(r'^\s*(\d{2}[-/]?[A-Za-z]{3}[-/]?\d{2,4}|\d{2}-\d{2}-\d{4})\s+(.*)$')
+        date_re=re.compile(rf'^\s*({DATE_TOKEN_PATTERN})\s+(.*)$', re.I)
         rows=[]; cur=None; page=1
         for line in text.splitlines():
             if '\f' in line: page+=line.count('\f')