"""Espressioni regolari del dominio appalti. Solo costanti (pattern compilati).

I gruppi nominati (`num`, `code`, `cap`) isolano il valore da estrarre quando
il match contiene un'etichetta di contesto (es. "CIG: XXXX").
"""

from __future__ import annotations

import re

I = re.IGNORECASE
U = re.UNICODE

# --- Identificativi fiscali/societari ---
CODICE_FISCALE = re.compile(r"\b[A-Z]{6}\d{2}[A-Z]\d{2}[A-Z]\d{3}[A-Z]\b", I)
# Il prefisso "partita iva" e' opzionale; il validatore Luhn filtra i numeri
# di 11 cifre non validi (riduce i falsi positivi).
PARTITA_IVA = re.compile(
    r"(?:(?:partita\s+iva|p\.?\s?iva|piva)[\s:.]*)?\b(?P<num>\d{11})\b", I)

NUMERO_REA = re.compile(r"\bREA[\s:.n°]*([A-Z]{2}[\s-]?\d{5,7})\b", I)
CCIAA = re.compile(r"\b(?:iscriz\w*\s+)?C\.?C\.?I\.?A\.?A\.?[\s:.n°]*\d{4,7}\b", I)

# --- Codici gara/appalti ---
CIG = re.compile(r"\bCIG[\s:.n°]*(?P<code>[0-9A-Z]{10})\b", I)
CUP = re.compile(r"\bCUP[\s:.n°]*(?P<code>[0-9A-Z]{15})\b", I)
NUMERO_GARA = re.compile(
    r"\b(?:numero\s+gara|n\.?\s?gara|gara\s+n\.?)[\s:.n°]*(?P<code>[0-9]{5,9})\b", I)
LOTTO = re.compile(r"\blotto[\s:.n°]*(?P<code>[0-9]{1,4}|[IVXLCDM]+)\b", I)
PROTOCOLLO = re.compile(
    r"\b(?:prot\w*|protocollo)[\s.:n°]*(?P<code>\d{1,7}[/\-]?\d{0,4})\b", I)
ATTO_AMMINISTRATIVO = re.compile(
    r"\b(?:determina(?:zione)?|delibera(?:zione)?|decreto)\s+"
    r"(?:dirigenziale\s+)?n\.?\s*(?P<code>\d{1,6}[/\-]?\d{0,4})\b", I)

# --- Codici di classificazione ---
# CPV: 8 cifre + '-' + cifra di controllo
CPV = re.compile(r"\b(?:CPV[\s:.n°]*)?(?P<code>\d{8}-\d)\b", I)
# NUTS: IT seguito da 1-3 caratteri alfanumerici
NUTS = re.compile(r"\b(?P<code>IT[A-Z0-9]{1,3})\b")
ATECO = re.compile(
    r"\b(?:ATECO[\s:.n°]*)?(?P<code>\d{2}\.\d{2}(?:\.\d{1,2})?)\b", I)

# --- Dati finanziari/bancari ---
IBAN = re.compile(r"\b[A-Z]{2}\d{2}[A-Z0-9]{11,30}\b")
BIC = re.compile(r"\b[A-Z]{6}[A-Z0-9]{2}(?:[A-Z0-9]{3})?\b")
CARTA_CREDITO = re.compile(r"\b(?:\d[ -]?){13,19}\b")
IMPORTO = re.compile(
    r"(?:€|EUR|euro)\s?\d{1,3}(?:[.\s]\d{3})*(?:,\d{2})?"
    r"|\b\d{1,3}(?:[.\s]\d{3})*(?:,\d{2})\s?(?:€|EUR|euro)", I)
RIBASSO = re.compile(
    r"\b(?:ribasso|sconto)[\s\w']*?(?P<num>\d{1,3}(?:,\d{1,3})?)\s?%", I)

# --- Contatti e rete ---
EMAIL = re.compile(r"\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}\b")
PEC = re.compile(
    r"\b[A-Za-z0-9._%+-]+@(?:pec\.|pec[a-z0-9-]*\.|[a-z0-9-]+\.pec\.)"
    r"[A-Za-z0-9.-]+\.[A-Za-z]{2,}\b", I)
TELEFONO = re.compile(
    r"(?:(?:tel|telefono|cell|fax|mobile)[\s.:]*)?"
    r"(?:\+39\s?)?(?:0\d{1,3}[\s./-]?\d{5,8}|3\d{2}[\s./-]?\d{6,7})\b", I)
CAP = re.compile(r"\b(?P<cap>\d{5})\b")
IP = re.compile(
    r"\b(?:(?:25[0-5]|2[0-4]\d|1?\d?\d)\.){3}(?:25[0-5]|2[0-4]\d|1?\d?\d)\b")
MAC = re.compile(r"\b(?:[0-9A-Fa-f]{2}[:-]){5}[0-9A-Fa-f]{2}\b")

# --- Previdenziali/assicurativi ---
POLIZZA = re.compile(
    r"\bpolizza[\s\w]*?n\.?[\s:]*(?P<code>[0-9A-Z./-]{5,20})\b", I)
MATRICOLA_INPS = re.compile(
    r"\bmatricola[\s\w]*?[\s:]*(?P<code>\d{6,12})\b", I)

# --- Veicoli/documenti ---
TARGA = re.compile(r"\b[A-Z]{2}\s?\d{3}\s?[A-Z]{2}\b")