28f259cd05
Major fixes to OCR store profiles for Romanian receipt extraction: - Fix ProfileRegistry module path resolution (was loading 0 profiles) - Add multiline TVA extraction for Brick, Electrobering, Gama Ink - Add "CARTE CREDIT" payment detection for OMV/SOCAR gas stations - Handle OCR artifacts: TVA→TUA, "-"→"4", I→L in CUI markers - Add client CUI patterns for Brick receipts - Add profile selection logging to ocr_extractor.py - Create test script for all 29 PDFs (test_all_profiles.py) Test results: 13/29 passing (improved from 9/29) Remaining failures are primarily OCR quality issues. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
525 lines
20 KiB
Python
525 lines
20 KiB
Python
"""
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Base class for store-specific OCR extraction profiles.
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Each store can have different receipt formats (TVA layout, total position, etc.).
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Store profiles allow customizing extraction logic per-store for better accuracy.
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Usage:
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from .base import BaseStoreProfile
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from . import ProfileRegistry
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@ProfileRegistry.register
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class LidlProfile(BaseStoreProfile):
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CUI_LIST = ["22891860"]
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NAME_PATTERNS = ["LIDL", "LDL"]
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def extract_tva_entries(self, text: str) -> List[dict]:
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# Custom Lidl TVA extraction logic
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...
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"""
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import re
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from abc import ABC
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from decimal import Decimal, InvalidOperation
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from typing import List, Optional, Tuple, Dict, Any
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from datetime import date
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class BaseStoreProfile(ABC):
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"""
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Abstract base class for store-specific extraction profiles.
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Each profile defines:
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- CUI_LIST: CUI codes that identify this store (without RO prefix)
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- NAME_PATTERNS: OCR-tolerant name patterns for fallback matching
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- Custom extraction methods for TVA, total, date, etc.
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The ProfileRegistry uses CUI_LIST to lookup profiles during extraction.
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"""
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# -------------------------------------------------------------------------
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# Class attributes - override in subclasses
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# -------------------------------------------------------------------------
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# List of CUI codes (without RO prefix) that identify this store
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CUI_LIST: List[str] = []
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# OCR-tolerant name patterns for fallback matching
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NAME_PATTERNS: List[str] = []
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# Store display name
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STORE_NAME: str = "Unknown Store"
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# -------------------------------------------------------------------------
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# Generic patterns - can be overridden in subclasses
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# -------------------------------------------------------------------------
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# Total amount patterns (confidence-weighted)
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TOTAL_PATTERNS = [
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(r'T[O0]TAL[.\s]+L[E3][I1!]\s*:?\s*([\d\s.,]+)', 0.98),
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(r'TOTAL\s+LEI\s*([\d\s.,]+)', 0.98),
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(r'[OT]?OTAL\s+LEI\s*([\d\s.,]+)', 0.95),
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(r'TOTAL\s*:?\s*([\d\s.,]+)\s*(?:RON|LEI)?', 0.95),
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(r'TOTAL\s+(?:RON|LEI)\s*([\d\s.,]+)', 0.95),
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(r'SUBTOTAL\s*([\d\s.,]+)', 0.90),
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(r'DE\s+PLATA\s*:?\s*([\d\s.,]+)', 0.90),
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(r'SUMA\s*:?\s*([\d\s.,]+)', 0.85),
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]
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# Date patterns (confidence-weighted)
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DATE_PATTERNS = [
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(r'D[AR]TA\s*:?\s*(\d{2}[-./]\d{2}[-./]\d{4})', 0.98),
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(r'DATA\s*:?\s*(\d{2}[-./]\d{2}[-./]\d{4})', 0.98),
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(r'(\d{2}[-./]\d{2}[-./]\d{4})\s+[O0]RA\s*:?\s*\d{2}:\d{2}', 0.95),
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(r'(\d{2}[-./]\d{2}[-./]\d{4})\s+\d{2}:\d{2}', 0.90),
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(r'(\d{2}[-./]\d{2}[-./]\d{4})', 0.80),
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(r'(\d{4}[-./]\d{2}[-./]\d{2})', 0.75),
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]
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# Date patterns with OCR-introduced spaces (separate because format is different)
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DATE_PATTERNS_OCR_SPACES = [
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(r'(\d{4})[.,]\s*(\d{2})[.,]\s*(\d{2})\s+\d{2}:\d{2}', 0.92, 'ymd'),
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(r'(\d{4})[.,]\s*(\d{2})[.,]\s*(\d{2})', 0.85, 'ymd'),
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(r'(\d{2})[.,]\s*(\d{2})[.,]\s*(\d{4})\s+\d{2}:\d{2}', 0.92, 'dmy'),
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(r'(\d{2})[.,]\s*(\d{2})[.,]\s*(\d{4})', 0.85, 'dmy'),
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]
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# Receipt number patterns (confidence-weighted)
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NUMBER_PATTERNS = [
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(r'NDS\s*:?\s*(\d+)', 0.98),
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(r'C3POS[-A-Z0-9]*[N:](\d{6,7})', 0.98),
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(r'C3POS.*?(\d{6,7})\b', 0.95),
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(r'BF\s*:\s*(\d{4,})', 0.96),
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(r'BF\s+(\d{4,})', 0.93),
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(r'NIVS\s*:?\s*(\d+)', 0.95),
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(r'NR\.?\s*BON\s*:?\s*(\d+)', 0.95),
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(r'BON\s+(?:FISCAL\s+)?NR\.?\s*:?\s*(\d+)', 0.95),
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(r'CHITANTA\s+NR\.?\s*:?\s*(\d+)', 0.95),
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(r'NR\.?\s+DOCUMENT\s*:?\s*(\d+)', 0.90),
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(r'ID\s*BF\s*:?\s*(\d+)', 0.90),
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]
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# Payment method patterns (pattern, method_type, confidence)
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PAYMENT_PATTERNS = [
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(r'CARTE\s+CREDIT\s*:?\s*([\d\s.,]+)', 'CARD', 0.98),
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(r'CARTE\s+CREDIT\s*:?\s*\n\s*([\d\s.,]+)', 'CARD', 0.97),
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(r'(?:PLATA\s+)?CARD\s*[:\sA-Z]?\s*([\d\s.,]+)', 'CARD', 0.95),
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(r'NUMERAR\s*:?\s*([\d\s.,]+)', 'NUMERAR', 0.95),
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(r'CASH\s*:?\s*([\d\s.,]+)', 'NUMERAR', 0.90),
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(r'(?:^|\n|\s)RD\s*:?\s*(\d{1,6}[.,]\d{2})\b', 'CARD', 0.70),
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(r'(?:^|\n|\s)ARD\s*:?\s*(\d{1,6}[.,]\d{2})\b', 'CARD', 0.75),
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(r'(?:^|\n|\s)MERAR\s*:?\s*(\d{1,6}[.,]\d{2})\b', 'NUMERAR', 0.70),
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]
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# Client section markers (for B2B receipts) - More flexible patterns
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CLIENT_MARKERS = [
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r'C\.?\s*[I1]\.?\s*F\.?\s+CLIENT', # "CIF CLIENT" (with or without colon)
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r'C\.?\s*U\.?\s*[I1]\.?\s+CLIENT', # "CUI CLIENT"
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r'CLIENT\s+C\.?\s*[UI1]\.?\s*[IF1]', # "CLIENT CIF" / "CLIENT CUI"
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r'CLIENT\s*:', # "CLIENT:"
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r'CUMPARATOR\s*:', # "CUMPARATOR:"
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r'BENEFICIAR\s*:', # "BENEFICIAR:"
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r'CUMP[AĂ]R[AĂ]TOR', # "CUMPARATOR" without colon
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r'COD\s+FISCAL\s+CLIENT', # "COD FISCAL CLIENT"
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]
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# Client CUI patterns (pattern, confidence) - More flexible
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CLIENT_CUI_PATTERNS = [
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# "CIF CLIENT:XXXXXXX" or "CIF CLIENT: ROXXXXXXX" - most common format
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(r'C\.?[I1]\.?F\.?\s+CLIENT\s*:?\s*(R?[O0]?\s*\d{6,10})', 0.99),
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# "CLIENT CIF: XXXXXXX"
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(r'CLIENT\s+C\.?[I1]\.?F\.?\s*:?\s*(R?[O0]?\s*\d{6,10})', 0.98),
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# "CUI CLIENT: XXXXXXX"
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(r'C\.?U\.?[I1]\.?\s+CLIENT\s*:?\s*(R?[O0]?\s*\d{6,10})', 0.98),
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# "ROXXXXXXX" followed by CLIENT marker
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(r'(R[O0]\d{6,10})\s*\n\s*CLIENT', 0.97),
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# "C.I.F. CLIENT: XXXXXXX"
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(r'C\.?\s*I\.?\s*F\.?\s+CLIENT\s*:?\s*(R?[O0]?\s*\d{6,10})', 0.96),
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# "CLIENT: ROXXXXXXX" or "CLIENT: XXXXXXX"
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(r'CLIENT\s*:?\s*(R?[O0]?\s*\d{6,10})', 0.90),
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# "COD FISCAL CLIENT: XXXXXXX"
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(r'COD\s+FISCAL\s+CLIENT\s*:?\s*(R?[O0]?\s*\d{6,10})', 0.95),
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]
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# Company type indicators (for identifying company names)
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COMPANY_INDICATORS = [
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r'\bS\.?\s*R\.?\s*L\.?\b', # S.R.L. or S. R. L.
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r'\bS\.?\s*A\.?\b', # S.A. or S. A.
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r'\bS\.?\s*N\.?\s*C\.?\b', # S.N.C. or S. N. C.
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r'\bS\.?\s*C\.?\s*S\.?\b', # S.C.S. or S. C. S.
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r'\bI\.?\s*I\.?\b', # I.I. or I. I.
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r'\bP\.?\s*F\.?\s*A\.?\b', # P.F.A. or P. F. A.
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r'\bS\.?\s*C\.?\s+[A-Z]', # S.C. followed by company name
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r'HOLDING',
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r'COMPANY',
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r'GROUP',
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]
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# Maximum reasonable payment amount (to filter OCR errors)
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MAX_PAYMENT = Decimal('100000')
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# -------------------------------------------------------------------------
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# Extraction methods - override in subclasses as needed
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# -------------------------------------------------------------------------
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def extract_tva_entries(self, text: str) -> List[dict]:
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"""
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Extract TVA entries from receipt text.
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Override this method in subclasses to handle store-specific TVA formats.
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Args:
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text: Raw OCR text from receipt
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Returns:
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List of dicts with keys: code, percent, amount
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"""
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return []
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def extract_total(self, text: str) -> Tuple[Optional[Decimal], float]:
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"""
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Extract total amount from receipt text.
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Args:
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text: Raw OCR text from receipt
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Returns:
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Tuple of (amount, confidence) or (None, 0.0)
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"""
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text_upper = text.upper()
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for pattern, confidence in self.TOTAL_PATTERNS:
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match = re.search(pattern, text_upper)
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if match:
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amount = self._parse_decimal(match.group(1))
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if amount and amount > 0 and amount < self.MAX_PAYMENT:
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return (amount, confidence)
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return (None, 0.0)
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def extract_date(self, text: str) -> Tuple[Optional[date], float]:
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"""
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Extract receipt date from text.
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Args:
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text: Raw OCR text from receipt
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Returns:
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Tuple of (date, confidence) or (None, 0.0)
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"""
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text_upper = text.upper()
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# Try standard patterns first
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for pattern, confidence in self.DATE_PATTERNS:
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match = re.search(pattern, text_upper)
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if match:
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parsed = self._parse_date(match.group(1))
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if parsed:
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return (parsed, confidence)
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# Try OCR-corrupted patterns with spaces
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for pattern, confidence, fmt in self.DATE_PATTERNS_OCR_SPACES:
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match = re.search(pattern, text_upper)
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if match:
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try:
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if fmt == 'ymd':
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year, month, day = int(match.group(1)), int(match.group(2)), int(match.group(3))
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else: # dmy
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day, month, year = int(match.group(1)), int(match.group(2)), int(match.group(3))
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if 1 <= day <= 31 and 1 <= month <= 12 and 2000 <= year <= 2100:
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return (date(year, month, day), confidence)
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except (ValueError, TypeError):
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continue
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return (None, 0.0)
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def extract_receipt_number(self, text: str) -> Tuple[Optional[str], float]:
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"""
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Extract receipt number from text.
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Args:
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text: Raw OCR text from receipt
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Returns:
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Tuple of (number, confidence) or (None, 0.0)
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"""
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text_upper = text.upper()
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for pattern, confidence in self.NUMBER_PATTERNS:
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match = re.search(pattern, text_upper)
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if match:
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number = match.group(1).strip()
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if number and len(number) >= 3:
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return (number, confidence)
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return (None, 0.0)
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def extract_payment_methods(self, text: str) -> List[dict]:
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"""
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Extract payment methods (CARD/NUMERAR) from receipt.
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Supports multiple payments of the same type (e.g., 2x CARD for split payments).
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Each payment is returned as a separate entry with its amount.
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Args:
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text: Raw OCR text from receipt
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Returns:
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List of dicts: [{'method': 'CARD'/'NUMERAR', 'amount': Decimal, 'confidence': float}]
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Multiple entries of same method type are allowed for split payments.
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"""
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text_upper = text.upper()
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methods = []
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# Track (method, amount) pairs to avoid exact duplicates from overlapping patterns
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seen_entries = set()
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for pattern, method, confidence in self.PAYMENT_PATTERNS:
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for match in re.finditer(pattern, text_upper):
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try:
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amount = self._parse_decimal(match.group(1))
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if amount and amount > 0 and amount < self.MAX_PAYMENT:
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# Deduplicate by (method, amount) to avoid same entry from multiple patterns
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# But allow different amounts for same method (split payments)
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entry_key = (method, amount)
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if entry_key not in seen_entries:
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methods.append({
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'method': method,
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'amount': amount,
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'confidence': confidence
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})
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seen_entries.add(entry_key)
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except (ValueError, InvalidOperation):
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continue
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return methods
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def extract_client_cui(self, text: str) -> Tuple[Optional[str], float]:
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"""
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Extract client CUI from B2B receipts.
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Args:
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text: Raw OCR text from receipt
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Returns:
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Tuple of (cui, confidence) or (None, 0.0)
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"""
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text_upper = text.upper()
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# First check if there's a CLIENT section
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has_client_section = any(
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re.search(marker, text_upper, re.IGNORECASE)
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for marker in self.CLIENT_MARKERS
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)
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if not has_client_section:
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return (None, 0.0)
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# Try to extract CUI
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for pattern, confidence in self.CLIENT_CUI_PATTERNS:
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match = re.search(pattern, text_upper, re.IGNORECASE | re.MULTILINE)
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if match:
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cui = match.group(1)
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# Normalize: remove RO prefix for storage
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cui_digits = re.sub(r'[^0-9]', '', cui)
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if 6 <= len(cui_digits) <= 10:
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return (cui_digits, confidence)
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return (None, 0.0)
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def extract_client_name(self, text: str) -> Tuple[Optional[str], float]:
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"""
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Extract client/buyer company name from B2B receipts.
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Args:
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text: Raw OCR text from receipt
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Returns:
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Tuple of (client_name, confidence) or (None, 0.0)
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"""
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text_upper = text.upper()
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lines = text.split('\n')
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# First check if there's a CLIENT section
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client_section_idx = None
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for i, line in enumerate(lines):
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line_upper = line.upper().strip()
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if any(re.search(marker, line_upper, re.IGNORECASE) for marker in self.CLIENT_MARKERS):
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client_section_idx = i
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break
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if client_section_idx is None:
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return (None, 0.0)
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# Look for company name in CLIENT section
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line = lines[client_section_idx].strip()
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line_upper = line.upper()
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# Strategy 1: Check if name is on same line after ":"
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if ':' in line:
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name_part = line.split(':', 1)[1].strip()
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if name_part and len(name_part) >= 3:
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# Skip if it looks like a CUI (RO followed by digits)
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if re.match(r'^R[O0]?\d{6,10}$', name_part.upper()):
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pass # This is CUI, not name - continue to next strategy
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else:
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# Check for company indicators
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name_upper = name_part.upper()
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if any(re.search(ind, name_upper) for ind in self.COMPANY_INDICATORS):
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return (self._clean_company_name(name_part), 0.95)
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elif len(name_part) >= 5 and not name_part.isdigit():
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return (self._clean_company_name(name_part), 0.80)
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# Strategy 2: Check next line for company name
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if client_section_idx + 1 < len(lines):
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next_line = lines[client_section_idx + 1].strip()
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next_upper = next_line.upper()
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# Skip if it's a CUI/CIF line or looks like CUI
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if not re.search(r'C\.?\s*[UI]\.?\s*[IF]\.?', next_upper):
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if not re.match(r'^R[O0]?\d{6,10}$', next_upper):
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if any(re.search(ind, next_upper) for ind in self.COMPANY_INDICATORS):
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return (self._clean_company_name(next_line), 0.90)
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elif len(next_line) >= 5 and not next_line.isdigit():
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# Check it's not CUI/CIF/COD keywords
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if not any(kw in next_upper for kw in ['CUI', 'CIF', 'COD', 'FISCAL']):
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return (self._clean_company_name(next_line), 0.75)
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# Strategy 3: Look for any line with company indicators in CLIENT section region
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search_end = min(client_section_idx + 5, len(lines))
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for i in range(client_section_idx + 1, search_end):
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line = lines[i].strip()
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line_upper = line.upper()
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# Skip CUI/CIF lines
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if re.search(r'C\.?\s*[UI]\.?\s*[IF]\.?', line_upper):
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continue
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if re.match(r'^R[O0]?\d{6,10}$', line_upper):
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continue
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if any(re.search(ind, line_upper) for ind in self.COMPANY_INDICATORS):
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return (self._clean_company_name(line), 0.85)
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return (None, 0.0)
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@staticmethod
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def _clean_company_name(name: str) -> str:
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"""Clean company name for storage."""
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if not name:
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return ""
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# Remove extra whitespace
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name = re.sub(r'\s+', ' ', name).strip()
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# Remove trailing punctuation except periods in S.R.L., S.A., etc.
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name = re.sub(r'[,;:]+$', '', name).strip()
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return name
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# -------------------------------------------------------------------------
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# Validation hints - override to customize validation behavior
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# -------------------------------------------------------------------------
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def get_validation_hints(self) -> Dict[str, Any]:
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"""
|
|
Return validation hints for this store.
|
|
|
|
Returns:
|
|
Dict with validation hints. Common keys:
|
|
- has_multi_rate_tva: bool - Store uses multiple TVA rates
|
|
- card_equals_total: bool - CARD payment equals total
|
|
- has_client_cui: bool - Receipt includes client CUI
|
|
- has_efactura: bool - Store uses e-factura format
|
|
- is_non_vat_payer: bool - Store is not a VAT payer
|
|
"""
|
|
return {}
|
|
|
|
# -------------------------------------------------------------------------
|
|
# Helper methods - available to all subclasses
|
|
# -------------------------------------------------------------------------
|
|
|
|
@staticmethod
|
|
def _normalize_number(text: str) -> str:
|
|
"""
|
|
Normalize a number string for Decimal conversion.
|
|
|
|
Handles Romanian formats: "1.234,56" -> "1234.56"
|
|
"""
|
|
if not text:
|
|
return "0"
|
|
|
|
# Remove spaces
|
|
text = text.replace(" ", "")
|
|
|
|
# Determine decimal separator
|
|
last_comma = text.rfind(",")
|
|
last_dot = text.rfind(".")
|
|
|
|
if last_comma > last_dot:
|
|
text = text.replace(".", "").replace(",", ".")
|
|
elif last_dot > last_comma:
|
|
text = text.replace(",", "")
|
|
else:
|
|
text = text.replace(",", ".")
|
|
|
|
return text
|
|
|
|
@staticmethod
|
|
def _parse_decimal(text: str) -> Optional[Decimal]:
|
|
"""Parse a string to Decimal, handling various formats."""
|
|
try:
|
|
normalized = BaseStoreProfile._normalize_number(text)
|
|
return Decimal(normalized)
|
|
except (InvalidOperation, ValueError, TypeError):
|
|
return None
|
|
|
|
@staticmethod
|
|
def _parse_date(text: str) -> Optional[date]:
|
|
"""
|
|
Parse date string in various formats.
|
|
|
|
Supports: DD-MM-YYYY, DD/MM/YYYY, DD.MM.YYYY, YYYY-MM-DD
|
|
"""
|
|
if not text:
|
|
return None
|
|
|
|
# Normalize separators
|
|
text = text.replace('/', '-').replace('.', '-')
|
|
|
|
try:
|
|
parts = text.split('-')
|
|
if len(parts) != 3:
|
|
return None
|
|
|
|
# Determine format based on first part length
|
|
if len(parts[0]) == 4:
|
|
# YYYY-MM-DD
|
|
year, month, day = int(parts[0]), int(parts[1]), int(parts[2])
|
|
else:
|
|
# DD-MM-YYYY
|
|
day, month, year = int(parts[0]), int(parts[1]), int(parts[2])
|
|
|
|
# Validate ranges
|
|
if 1 <= day <= 31 and 1 <= month <= 12 and 2000 <= year <= 2100:
|
|
return date(year, month, day)
|
|
except (ValueError, TypeError, IndexError):
|
|
pass
|
|
|
|
return None
|
|
|
|
@staticmethod
|
|
def _clean_text(text: str) -> str:
|
|
"""Clean OCR text for pattern matching."""
|
|
if not text:
|
|
return ""
|
|
text = re.sub(r'\s+', ' ', text)
|
|
text = re.sub(r'[\x00-\x09\x0b\x0c\x0e-\x1f\x7f]', '', text)
|
|
return text.strip()
|
|
|
|
# -------------------------------------------------------------------------
|
|
# Magic methods
|
|
# -------------------------------------------------------------------------
|
|
|
|
def __repr__(self) -> str:
|
|
return f"<{self.__class__.__name__} CUI={self.CUI_LIST}>"
|
|
|
|
def __str__(self) -> str:
|
|
return f"{self.STORE_NAME} ({', '.join(self.CUI_LIST)})"
|