"""
Configuración de plantilla CSV para Trailers / Cajas (EstructuraCatTrailers.xls).
Mapeo: NUMERO TRAILER → trailer_number, CLAVE ACE → ace_trailer_number, etc.
"""

from typing import Dict, List, Any

from ..common.cell_value import cell_to_str
from ..common.csv_hint_inject import inject_max_char_hints_into_columns
from ..common.inject_csv_labels_en import inject_en_labels_into_template_columns
from ..common.template_locale import merge_download_header_into_lookup, merge_labels_into_lookup
from .csv_max_chars_for_headers import TRAILERS_CSV_MAX_CHARS

TEMPLATE_COLUMNS: Dict[str, List[Dict[str, Any]]] = {
    "trailers": [
        {"canonical": "NUMERO TRAILER", "aliases": ["CLAVE TRAILER", "TRAILER NUMBER", "TRAILER", "NUMERO"]},
        {"canonical": "CLAVE ACE", "aliases": ["ACE", "NUMERO ACE", "ACE TRAILER"]},
        {"canonical": "TIPO TRAILER", "aliases": ["TIPO", "TRAILER TYPE", "TIPO CAJA"]},
        {"canonical": "PRECINTO", "aliases": ["SEAL"]},
        {"canonical": "CODIGO ENTIDAD", "aliases": ["ENTIDAD", "ENTITY CODE", "CODIGO DE ENTIDAD"]},
        {"canonical": "PLACAS", "aliases": ["PLACA", "PLATE NUMBER", "PLATE"]},
        {"canonical": "ESTADO", "aliases": ["STATE"]},
        {"canonical": "PAIS", "aliases": ["COUNTRY", "Pais"]},
        {"canonical": "CLAVE CONTENEDOR", "aliases": ["CONTAINER", "CONTAINER KEY", "CONTENEDOR"]},
        {"canonical": "COL_EXTRA", "aliases": ["COLUMNA I", "COL I", "COL 9"]},
    ],
}

inject_en_labels_into_template_columns(TEMPLATE_COLUMNS)

inject_max_char_hints_into_columns(TEMPLATE_COLUMNS.get("trailers"), TRAILERS_CSV_MAX_CHARS)


def build_normalized_lookup(normalize_header_fn) -> Dict[str, str]:
    cols = TEMPLATE_COLUMNS.get("trailers")
    if not cols:
        return {}
    lookup: Dict[str, str] = {}
    for item in cols:
        canonical = item["canonical"]
        lookup[normalize_header_fn(canonical)] = canonical
        for alias in item.get("aliases") or []:
            lookup[normalize_header_fn(alias)] = canonical
        merge_labels_into_lookup(item, canonical, normalize_header_fn, lookup)
        merge_download_header_into_lookup(item, canonical, normalize_header_fn, lookup)
    return lookup


def row_from_template(row: Dict[str, Any], normalize_header_fn) -> Dict[str, Any]:
    lookup = build_normalized_lookup(normalize_header_fn)
    if not lookup:
        return {normalize_header_fn(k): cell_to_str(v) for k, v in row.items()}
    out: Dict[str, Any] = {}
    for csv_header, value in row.items():
        key_norm = normalize_header_fn(csv_header)
        if key_norm in lookup:
            out[lookup[key_norm]] = cell_to_str(value)
    return out
