"""
SOCAR Petroleum store profile for OCR extraction.

SOCAR receipts are similar to OMV - gas station with client CUI support.
Date format may use YYYY. MM. DD with spaces.
"""

import re
from datetime import date
from decimal import Decimal, InvalidOperation
from typing import List, Dict, Any, Tuple, Optional

from .base import BaseStoreProfile
from . import ProfileRegistry


@ProfileRegistry.register
class SocarProfile(BaseStoreProfile):
    """
    SOCAR PETROLEUM S.A. - standard TVA with client CUI.

    Key characteristics:
    - Standard TVA format (usually single rate)
    - Includes client CUI on receipt (for business purchases)
    - Similar format to OMV/Petrom
    - Date format may use YYYY. MM. DD (with spaces)
    """

    CUI_LIST = ["12546600"]
    NAME_PATTERNS = ["SOCAR", "S0CAR", "SOCAR PETROLEUM"]  # OCR variants
    STORE_NAME = "SOCAR PETROLEUM S.A."

    # Standard TVA patterns for gas stations
    TVA_PATTERNS = [
        # Table format: "A-19,00% 285,66 49,58"
        r'([A-D])\s*[-:]\s*(\d{1,2})[.,]\d{2}\s*%\s+([\d.,]+)\s+([\d.,]+)',
        # Simple format: "TVA 19% 49,58"
        r'TVA\s+(\d{1,2})\s*%\s*([\d.,]+)',
    ]

    # Gas stations may use YYYY. MM. DD format
    DATE_PATTERNS_OCR_SPACES = [
        (r'(\d{4})[.,]\s*(\d{2})[.,]\s*(\d{2})\s+\d{2}:\d{2}', 0.98, 'ymd'),
        (r'(\d{4})[.,]\s*(\d{2})[.,]\s*(\d{2})', 0.95, 'ymd'),
        (r'(\d{2})[.,]\s*(\d{2})[.,]\s*(\d{4})\s+\d{2}:\d{2}', 0.92, 'dmy'),
        (r'(\d{2})[.,]\s*(\d{2})[.,]\s*(\d{4})', 0.85, 'dmy'),
    ]

    def extract_tva_entries(self, text: str) -> List[dict]:
        """
        Extract SOCAR-specific TVA entries.

        Args:
            text: Raw OCR text from receipt

        Returns:
            List of TVA entries with code, percent, and amount
        """
        entries = []
        seen = set()

        # Try table format first
        table_pattern = self.TVA_PATTERNS[0]
        for match in re.finditer(table_pattern, text, re.IGNORECASE):
            try:
                code = match.group(1).upper()
                percent = int(match.group(2))
                tva_amount = self._parse_decimal(match.group(4))

                if tva_amount and tva_amount > 0:
                    entry_key = (code, percent)
                    if entry_key not in seen:
                        entries.append({
                            'code': code,
                            'percent': percent,
                            'amount': tva_amount
                        })
                        seen.add(entry_key)
            except (ValueError, InvalidOperation):
                continue

        # Fallback to simple format if no table entries found
        if not entries:
            simple_pattern = self.TVA_PATTERNS[1]
            for match in re.finditer(simple_pattern, text, re.IGNORECASE):
                try:
                    percent = int(match.group(1))
                    amount = self._parse_decimal(match.group(2))

                    if amount and amount > 0:
                        # Default to code 'A' for simple format
                        entries.append({
                            'code': 'A',
                            'percent': percent,
                            'amount': amount
                        })
                        break  # Only take first match for simple format
                except (ValueError, InvalidOperation):
                    continue

        return entries

    def get_validation_hints(self) -> Dict[str, Any]:
        """Return SOCAR-specific validation hints."""
        return {
            "has_multi_rate_tva": False,
            "card_equals_total": False,
            "has_client_cui": True,
            "has_efactura": False,
            "is_non_vat_payer": False,
        }